client/src/pages/TutorialTasks.tsx

import React, { useState, useEffect, useCallback } from 'react';
import { useNavigate } from 'react-router-dom';
import { api } from '../services/api';
import { 
  AcademicCapIcon, 
  DocumentTextIcon, 
  CheckCircleIcon,
  ClockIcon,
  ArrowRightIcon,
  PencilIcon,
  XMarkIcon,
  CheckIcon,
  PlusIcon,
  TrashIcon,
  ArrowTopRightOnSquareIcon,
  ArrowsRightLeftIcon
} from '@heroicons/react/24/outline';
import ReactDOM from 'react-dom';

interface TutorialTask {
  _id: string;
  content: string;
  weekNumber: number;
  translationBrief?: string;
  imageUrl?: string;
  imageAlt?: string;
  imageSize?: number;
  imageAlignment?: 'left' | 'center' | 'right' | 'portrait-split';
  position?: number;
}

interface TutorialWeek {
  weekNumber: number;
  translationBrief?: string;
  tasks: TutorialTask[];
}

interface UserSubmission {
  _id: string;
  transcreation: string;
  status: string;
  score: number;
  groupNumber?: number;
  isOwner?: boolean;
  userId?: {
    _id: string;
    username: string;
  };
  voteCounts: {
    '1': number;
    '2': number;
    '3': number;
  };
}

const TutorialTasks: React.FC = () => {
  const [selectedWeek, setSelectedWeek] = useState<number>(() => {
    const savedWeek = localStorage.getItem('selectedTutorialWeek');
    return savedWeek ? parseInt(savedWeek) : 1;
  });
  const [isWeekTransitioning, setIsWeekTransitioning] = useState(false);
  const [tutorialTasks, setTutorialTasks] = useState<TutorialTask[]>([]);
  const [tutorialWeek, setTutorialWeek] = useState<TutorialWeek | null>(null);
  const [userSubmissions, setUserSubmissions] = useState<{[key: string]: UserSubmission[]}>({});
  const [sourceHeights, setSourceHeights] = useState<{[key: string]: number}>({});

  // Move a task up or down by normalizing positions for the current visible list (weeks 4–6 only)
  const moveTask = async (taskId: string, direction: 'up' | 'down') => {
    try {
      const isAdmin = JSON.parse(localStorage.getItem('user') || '{}').role === 'admin';
      if (!isAdmin || selectedWeek < 4) return;
      // Build ordered list for the current week from what is rendered
      const current = tutorialTasks.filter(t => t.weekNumber === selectedWeek);
      const index = current.findIndex(t => t._id === taskId);
      if (index === -1) return;
      const targetIndex = direction === 'up' ? index - 1 : index + 1;
      if (targetIndex < 0 || targetIndex >= current.length) return;

      // Normalize positions to 0..n-1 based on current screen order
      const normalized = current.map((t, i) => ({ id: t._id, position: i }));
      // Swap the two entries (calculate new positions first)
      const posA = normalized[index].position;
      const posB = normalized[targetIndex].position;
      normalized[index].position = posB;
      normalized[targetIndex].position = posA;

      // Optimistic UI update: swap in local state immediately for smoother UX
      const prevState = tutorialTasks;
      setTutorialTasks((prev) => {
        const next = [...prev];
        // find actual indices in full list and swap their relative order by updating their position fields
        const aId = normalized[index].id;
        const bId = normalized[targetIndex].id;
        return next.map(item => {
          if (item._id === aId) return { ...item, position: posB } as any;
          if (item._id === bId) return { ...item, position: posA } as any;
          return item;
        });
      });

      // Send both updates in parallel; if either fails, revert then refetch
      await Promise.all([
        api.put(`/api/auth/admin/tutorial-tasks/${normalized[index].id}/position`, { position: posB }),
        api.put(`/api/auth/admin/tutorial-tasks/${normalized[targetIndex].id}/position`, { position: posA })
      ]);
      // Light refresh to ensure list order is consistent with server
      fetchTutorialTasks(false);
    } catch (error) {
      console.error('Reorder failed', error);
    }
  };
  const [loading, setLoading] = useState(true);
  const [submitting, setSubmitting] = useState<{[key: string]: boolean}>({});
  const [translationText, setTranslationText] = useState<{[key: string]: string}>({});
  const [selectedGroups, setSelectedGroups] = useState<{[key: string]: number}>({});
  const [expandedSections, setExpandedSections] = useState<{[key: string]: boolean}>({});
  const GroupDocSection: React.FC<{ weekNumber: number }> = ({ weekNumber }) => {
    const [group, setGroup] = useState<number>(() => {
      const saved = localStorage.getItem(`tutorial_group_${weekNumber}`);
      return saved ? parseInt(saved) : 1;
    });
    const [creating, setCreating] = useState(false);
    const [docs, setDocs] = useState<any[]>([]);
    const [urlInput, setUrlInput] = useState<string>('');
    const [errorMsg, setErrorMsg] = useState<string>('');
    const [copiedLink, setCopiedLink] = useState<string>('');
    const isAdmin = (JSON.parse(localStorage.getItem('user') || '{}').role === 'admin');

    const CopySquaresIcon: React.FC<{ className?: string }> = ({ className }) => (
      <svg className={className || 'h-4 w-4'} viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="1.5" xmlns="http://www.w3.org/2000/svg">
        <rect x="8" y="8" width="12" height="12" rx="2"/>
        <rect x="4" y="4" width="12" height="12" rx="2"/>
      </svg>
    );

    const loadDocs = useCallback(async () => {
      try {
        const resp = await api.get(`/api/docs/list?weekNumber=${weekNumber}`);
        setDocs(resp.data?.docs || []);
      } catch (e) {
        setDocs([]);
      }
    }, [weekNumber]);

    useEffect(() => { loadDocs(); }, [loadDocs]);

    const current = docs.find(d => d.groupNumber === group);

    const createDoc = async () => {
      try {
        setCreating(true);
        setErrorMsg('');
        const url = urlInput.trim();
        if (!url) {
          setErrorMsg('Please paste a Google Doc link.');
          return;
        }
        const isValid = /docs\.google\.com\/document\/d\//.test(url);
        if (!isValid) {
          setErrorMsg('Provide a valid Google Doc link (docs.google.com/document/d/...).');
          return;
        }
        await api.post('/api/docs/create', { weekNumber, groupNumber: group, docUrl: url });
        await loadDocs();
        setUrlInput('');
      } finally {
        setCreating(false);
      }
    };

    const copyLink = async (link: string) => {
      try {
        await navigator.clipboard.writeText(link);
        // Persist until refresh: do not clear after timeout
        setCopiedLink(link);
      } catch {}
    };

    return (
      <div>
        {/* Top control row */}
        {isAdmin && (
          <div className="mb-4 max-w-2xl">
            <label className="text-sm text-gray-700 block mb-1">Group</label>
            <select
              value={group}
              onChange={(e) => {
                const g = parseInt(e.target.value);
                setGroup(g);
                localStorage.setItem(`tutorial_group_${weekNumber}`, String(g));
              }}
              className="w-full px-3 py-2 border rounded-md text-sm"
            >
              {[1,2,3,4,5,6,7,8].map(g => <option key={g} value={g}>Group {g}</option>)}
            </select>
          </div>
        )}

        {/* Replace / Add link inline editor */}
        {isAdmin && (
          <div className="mb-4 max-w-2xl">
            <div className="flex items-center gap-2">
              <input
                type="url"
                value={urlInput}
                onChange={(e) => { setUrlInput(e.target.value); setErrorMsg(''); }}
                placeholder="Paste Google Doc link (docs.google.com/document/d/...)"
                className="flex-1 px-3 py-2 border border-gray-300 rounded-md text-sm"
              />
              <button onClick={createDoc} disabled={creating} className="px-4 py-2 bg-indigo-600 text-white rounded-md text-sm">{creating ? 'Saving…' : (current ? 'Save new link' : 'Add Doc Link')}</button>
            </div>
            {errorMsg && <div className="mt-1 text-xs text-red-600">{errorMsg}</div>}
          </div>
        )}

        {/* All groups table */}
        <div className="mt-6 max-w-2xl">
          <h5 className="text-sm font-semibold text-gray-800 uppercase tracking-wide mb-2">All Groups</h5>
          <div className="overflow-hidden rounded-lg border border-gray-200">
            <table className="min-w-full text-sm">
              <thead className="bg-gray-50 text-gray-600">
                <tr>
                  <th className="px-4 py-2 text-left">Group</th>
                  <th className="px-4 py-2 text-left">Actions</th>
                </tr>
              </thead>
              <tbody className="divide-y divide-gray-200">
                {docs.length === 0 && (
                  <tr><td colSpan={2} className="px-4 py-3 text-gray-500">No group docs yet.</td></tr>
                )}
                {docs.map(d => (
                  <tr key={d._id}>
                    <td className="px-4 py-3">Group {d.groupNumber}</td>
                    <td className="px-4 py-3">
                      <div className="flex items-center gap-4">
                        <a href={d.docUrl} target="_blank" rel="noreferrer" className="inline-flex items-center gap-1 text-indigo-700">
                          <ArrowTopRightOnSquareIcon className="h-4 w-4" /> Open
                        </a>
                        <button onClick={() => copyLink(d.docUrl)} className="inline-flex items-center gap-1 text-indigo-700">
                          <CopySquaresIcon className="h-4 w-4" />
                          <span className="inline-block w-14 text-left">{copiedLink === d.docUrl ? 'Copied' : 'Copy'}</span>
                        </button>
                        {isAdmin && (
                          <button onClick={() => { setGroup(d.groupNumber); }} className="inline-flex items-center gap-1 text-gray-700">
                            <ArrowsRightLeftIcon className="h-4 w-4" /> Edit
                          </button>
                        )}
                      </div>
                    </td>
                  </tr>
                ))}
              </tbody>
            </table>
          </div>
        </div>
      </div>
    );
  };

  // Basic inline formatting helpers (bold/italic via simple markdown) for weeks 4–6
  const renderFormatted = (text: string) => {
    const escape = (s: string) => s.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
    // Auto-linker: supports [label](url), plain URLs, and www.* without touching existing href attributes
    const html = escape(text)
      // Markdown-style links: [label](https://example.com)
      .replace(/\[([^\]]+?)\]\((https?:\/\/[^\s)]+)\)/g, '<a class="text-indigo-600 underline" href="$2" target="_blank" rel="noopener noreferrer">$1</a>')
      // Plain URLs with protocol, avoid matching inside attributes (require a non-attribute preceding char)
      .replace(/(^|[^=\"'\/:])(https?:\/\/[^\s<]+)/g, (m, p1, url) => `${p1}<a class="text-indigo-600 underline" href="${url}" target="_blank" rel="noopener noreferrer">${url}</a>`)
      // www.* domains (prepend https://), also avoid attributes
      .replace(/(^|[^=\"'\/:])(www\.[^\s<]+)/g, (m, p1, host) => `${p1}<a class="text-indigo-600 underline" href="https://${host}" target="_blank" rel="noopener noreferrer">${host}</a>`)
      .replace(/\*\*(.+?)\*\*/g, '<strong>$1</strong>')
      .replace(/\*(.+?)\*/g, '<em>$1</em>')
      .replace(/\n/g, '<br/>');
    return <span dangerouslySetInnerHTML={{ __html: html }} />;
  };

  const applyLinkFormat = (
    elementId: string,
    current: string,
    setValue: (v: string) => void
  ) => {
    const urlInput = window.prompt('Enter URL (e.g., https://example.com):');
    if (!urlInput) return;
    // Sanitize URL: ensure protocol, and strip accidental trailing quotes/attributes pasted from elsewhere
    let url = /^https?:\/\//i.test(urlInput) ? urlInput : `https://${urlInput}`;
    url = url.replace(/["'>)\s]+$/g, '');
    const el = document.getElementById(elementId) as HTMLTextAreaElement | null;
    if (!el) {
      setValue(`${current}[link](${url})`);
      return;
    }
    const start = el.selectionStart ?? current.length;
    const end = el.selectionEnd ?? current.length;
    const before = current.slice(0, start);
    const selection = current.slice(start, end) || 'link';
    const after = current.slice(end);
    setValue(`${before}[${selection}](${url})${after}`);
    // Restore focus and selection
    setTimeout(() => {
      el.focus();
      const newPos = before.length + selection.length + 4 + url.length + 2; // rough caret placement
      try { el.setSelectionRange(newPos, newPos); } catch {}
    }, 0);
  };

  const applyInlineFormat = (
    elementId: string,
    current: string,
    setValue: (v: string) => void,
    wrapper: '**' | '*'
  ) => {
    const el = document.getElementById(elementId) as HTMLTextAreaElement | null;
    if (!el) {
      setValue(current + wrapper + wrapper);
      return;
    }
    const start = el.selectionStart ?? current.length;
    const end = el.selectionEnd ?? current.length;
    const before = current.slice(0, start);
    const selection = current.slice(start, end);
    const after = current.slice(end);
    const next = `${before}${wrapper}${selection}${wrapper}${after}`;
    setValue(next);
    setTimeout(() => {
      try {
        el.focus();
        el.selectionStart = start + wrapper.length;
        el.selectionEnd = end + wrapper.length;
      } catch {}
    }, 0);
  };

  const [editingTask, setEditingTask] = useState<string | null>(null);
  const [editingBrief, setEditingBrief] = useState<{[key: number]: boolean}>({});
  const [addingTask, setAddingTask] = useState<boolean>(false);
  const [addingImage, setAddingImage] = useState<boolean>(false);
  const [editForm, setEditForm] = useState<{
    content: string;
    translationBrief: string;
    imageUrl: string;
    imageAlt: string;
  }>({
    content: '',
    translationBrief: '',
    imageUrl: '',
    imageAlt: ''
  });
  const [imageForm, setImageForm] = useState<{
    imageUrl: string;
    imageAlt: string;
    imageSize: number;
  imageAlignment: 'left' | 'center' | 'right' | 'portrait-split';
  }>({
    imageUrl: '',
    imageAlt: '',
    imageSize: 200,
    imageAlignment: 'center'
  });
  const [selectedFile, setSelectedFile] = useState<File | null>(null);
  const [uploading, setUploading] = useState(false);
  const [saving, setSaving] = useState(false);
  const navigate = useNavigate();

  const weeks = [1, 2, 3, 4, 5, 6];

  const handleWeekChange = async (week: number) => {
    setIsWeekTransitioning(true);
    
    // Clear existing data first
    setTutorialTasks([]);
    setTutorialWeek(null);
    setUserSubmissions({});
    
    // Update state and localStorage
    setSelectedWeek(week);
    localStorage.setItem('selectedTutorialWeek', week.toString());
    
    // Force a small delay to ensure state is updated
    await new Promise(resolve => setTimeout(resolve, 50));
    
    // Wait for actual content to load before ending animation
    try {
      // Fetch new week's data with the updated selectedWeek
      const response = await api.get(`/api/search/tutorial-tasks/${week}`);
      
      if (response.data) {
        const tasks = response.data;
        console.log('Fetched tasks for week', week, ':', tasks);
        
        // Ensure tasks are sorted by title
        const sortedTasks = tasks.sort((a: any, b: any) => {
          const aNum = parseInt(a.title?.match(/ST (\d+)/)?.[1] || '0');
          const bNum = parseInt(b.title?.match(/ST (\d+)/)?.[1] || '0');
          return aNum - bNum;
        });
        
        setTutorialTasks(sortedTasks);
        
        // Use translation brief from tasks or localStorage
        let translationBrief = null;
        if (tasks.length > 0) {
          translationBrief = tasks[0].translationBrief;
        } else {
          const briefKey = `translationBrief_week_${week}`;
          translationBrief = localStorage.getItem(briefKey);
        }
        
        const tutorialWeekData: TutorialWeek = {
          weekNumber: week,
          translationBrief: translationBrief,
          tasks: tasks
        };
        setTutorialWeek(tutorialWeekData);
        
        // Fetch user submissions for the new tasks
        await fetchUserSubmissions(tasks);
      }
      
      // Wait longer for DOM to update with new content (especially for Week 2)
      const delay = week === 2 ? 400 : 200;
      await new Promise(resolve => setTimeout(resolve, delay));
    } catch (error) {
      console.error('Error loading week data:', error);
    } finally {
      // End transition after content is loaded and rendered
      setIsWeekTransitioning(false);
    }
  };

  const handleFileUpload = async (file: File): Promise<string> => {
    try {
      setUploading(true);
      
      // Convert file to data URL for display
      return new Promise((resolve, reject) => {
        const reader = new FileReader();
        reader.onload = () => {
          const dataUrl = reader.result as string;
          console.log('File uploaded:', file.name, 'Size:', file.size);
          console.log('Generated data URL:', dataUrl.substring(0, 50) + '...');
          resolve(dataUrl);
        };
        reader.onerror = () => {
          console.error('Error reading file:', reader.error);
          reject(reader.error);
        };
        reader.readAsDataURL(file);
      });
    } catch (error) {
      console.error('Error uploading file:', error);
      throw error;
    } finally {
      setUploading(false);
    }
  };

  const handleFileChange = (event: React.ChangeEvent<HTMLInputElement>) => {
    const file = event.target.files?.[0];
    if (file) {
      setSelectedFile(file);
    }
  };

  const toggleExpanded = (taskId: string) => {
    setExpandedSections(prev => ({
      ...prev,
      [taskId]: !prev[taskId]
    }));
  };

  const fetchUserSubmissions = useCallback(async (tasks: TutorialTask[]) => {
    try {
      const token = localStorage.getItem('token');
      const user = localStorage.getItem('user');
      
      if (!token || !user) {
        return;
      }

      const response = await api.get('/api/submissions/my-submissions');

      if (response.data && response.data.submissions) {
        const data = response.data;
        
        const groupedSubmissions: {[key: string]: UserSubmission[]} = {};
        
        // Initialize all tasks with empty arrays
        tasks.forEach(task => {
          groupedSubmissions[task._id] = [];
        });
        
        // Then populate with actual submissions and mark ownership for edit visibility after refresh/login
        if (data.submissions && Array.isArray(data.submissions)) {
          data.submissions.forEach((submission: any) => {
            const sourceTextId = submission.sourceTextId?._id || submission.sourceTextId;
            if (sourceTextId && groupedSubmissions[sourceTextId]) {
              groupedSubmissions[sourceTextId].push({ ...submission, isOwner: true });
            }
          });
        }
                  
        setUserSubmissions(groupedSubmissions);
      }
    } catch (error) {
      console.error('Error fetching user submissions:', error);
    }
  }, []);

  const fetchTutorialTasks = useCallback(async (showLoading = true) => {
    try {
      if (showLoading) {
        setLoading(true);
      }
      const token = localStorage.getItem('token');
      const user = localStorage.getItem('user');
      
      if (!token || !user) {
        navigate('/login');
        return;
      }

      const response = await api.get(`/api/search/tutorial-tasks/${selectedWeek}`);

      if (response.data) {
        const tasks = response.data;
        console.log('Fetched tasks:', tasks);
        console.log('Tasks with images:', tasks.filter((task: TutorialTask) => task.imageUrl));
        
        // Debug: Log each task's fields
        tasks.forEach((task: any, index: number) => {
          console.log(`Task ${index} fields:`, {
            _id: task._id,
            content: task.content,
            imageUrl: task.imageUrl,
            imageAlt: task.imageAlt,
            translationBrief: task.translationBrief,
            weekNumber: task.weekNumber,
            category: task.category
          });
          console.log(`Task ${index} imageUrl:`, task.imageUrl);
          console.log(`Task ${index} translationBrief:`, task.translationBrief);
        });
        
        // Ensure tasks are sorted by title to maintain correct order (Tutorial ST 1, Tutorial ST 2, etc.)
        const sortedTasks = tasks.sort((a: any, b: any) => {
          const aNum = parseInt(a.title?.match(/ST (\d+)/)?.[1] || '0');
          const bNum = parseInt(b.title?.match(/ST (\d+)/)?.[1] || '0');
          return aNum - bNum;
        });
        setTutorialTasks(sortedTasks);
        
        // Use translation brief from tasks or localStorage
        let translationBrief = null;
        if (tasks.length > 0) {
          translationBrief = tasks[0].translationBrief;
          console.log('Translation brief from task:', translationBrief);
        } else {
          // Check localStorage for brief if no tasks exist
          const briefKey = `translationBrief_week_${selectedWeek}`;
          translationBrief = localStorage.getItem(briefKey);
          console.log('Translation brief from localStorage:', translationBrief);
          console.log('localStorage key:', briefKey);
        }
        
        console.log('Final translation brief:', translationBrief);
        const tutorialWeekData: TutorialWeek = {
          weekNumber: selectedWeek,
          translationBrief: translationBrief,
          tasks: tasks
        };
        setTutorialWeek(tutorialWeekData);
        
        await fetchUserSubmissions(tasks);
      } else {
        console.error('Failed to fetch tutorial tasks');
      }
    } catch (error) {
      console.error('Error fetching tutorial tasks:', error);
    } finally {
      if (showLoading) {
        setLoading(false);
      }
    }
  }, [selectedWeek, fetchUserSubmissions, navigate]);

  useEffect(() => {
    const user = localStorage.getItem('user');
    if (!user) {
      navigate('/login');
      return;
    }
    fetchTutorialTasks();
  }, [fetchTutorialTasks, navigate]);

  // Listen for week reset events from page navigation
  useEffect(() => {
    const handleWeekReset = (event: CustomEvent) => {
      if (event.detail.page === 'tutorial-tasks') {
        console.log('Week reset event received for tutorial tasks');
        setSelectedWeek(event.detail.week);
        localStorage.setItem('selectedTutorialWeek', event.detail.week.toString());
      }
    };

    window.addEventListener('weekReset', handleWeekReset as EventListener);
    return () => {
      window.removeEventListener('weekReset', handleWeekReset as EventListener);
    };
  }, []);

  // Refresh submissions when user changes (after login/logout)
  useEffect(() => {
    const user = localStorage.getItem('user');
    if (user && tutorialTasks.length > 0) {
      fetchUserSubmissions(tutorialTasks);
    }
  }, [tutorialTasks, fetchUserSubmissions]);

  const handleSubmitTranslation = async (taskId: string) => {
    if (!translationText[taskId]?.trim()) {
      return;
    }

    if (!selectedGroups[taskId]) {
      return;
    }

    try {
      setSubmitting({ ...submitting, [taskId]: true });
      const user = JSON.parse(localStorage.getItem('user') || '{}');
      const response = await api.post('/api/submissions', {
        sourceTextId: taskId,
        transcreation: translationText[taskId],
        groupNumber: selectedGroups[taskId],
        culturalAdaptations: [],
        username: user.name || 'Unknown'
      });

      if (response.status >= 200 && response.status < 300) {
        const result = response.data;
        console.log('Submission created successfully:', result);
   
        setTranslationText({ ...translationText, [taskId]: '' });
        setSelectedGroups({ ...selectedGroups, [taskId]: 0 });
        await fetchUserSubmissions(tutorialTasks);
      } else {
        console.error('Failed to submit translation:', response.data);
      }
    } catch (error) {
      console.error('Error submitting translation:', error);
      
    } finally {
      setSubmitting({ ...submitting, [taskId]: false });
    }
  };

  const [editingSubmission, setEditingSubmission] = useState<{id: string, text: string} | null>(null);
  const [editSubmissionText, setEditSubmissionText] = useState('');

  const handleEditSubmission = async (submissionId: string, currentText: string) => {
    setEditingSubmission({ id: submissionId, text: currentText });
    setEditSubmissionText(currentText);
  };

  const saveEditedSubmission = async () => {
    if (!editingSubmission || !editSubmissionText.trim()) return;

    try {
      const response = await api.put(`/api/submissions/${editingSubmission.id}`, {
        transcreation: editSubmissionText
      });

      if (response.status >= 200 && response.status < 300) {
  
        setEditingSubmission(null);
        setEditSubmissionText('');
        await fetchUserSubmissions(tutorialTasks);
      } else {
        console.error('Failed to update translation:', response.data);
      }
    } catch (error) {
      console.error('Error updating translation:', error);

    }
  };

  const cancelEditSubmission = () => {
    setEditingSubmission(null);
    setEditSubmissionText('');
  };

  const handleDeleteSubmission = async (submissionId: string) => {


    try {
      const response = await api.delete(`/api/submissions/${submissionId}`);

      if (response.status === 200) {
  
        await fetchUserSubmissions(tutorialTasks);
      } else {

      }
    } catch (error) {
      console.error('Error deleting submission:', error);

    }
  };

  const getStatusIcon = (status: string) => {
    switch (status) {
      case 'approved':
        return <CheckCircleIcon className="h-5 w-5 text-green-500" />;
      case 'pending':
        return <ClockIcon className="h-5 w-5 text-yellow-500" />;
      default:
        return <ClockIcon className="h-5 w-5 text-gray-500" />;
    }
  };

  const startEditing = (task: TutorialTask) => {
    setEditingTask(task._id);
    setEditForm({
      content: task.content,
      translationBrief: task.translationBrief || '',
      imageUrl: task.imageUrl || '',
      imageAlt: task.imageAlt || ''
    });
  };

  const startEditingBrief = () => {
    setEditingBrief(prev => ({ ...prev, [selectedWeek]: true }));
    setEditForm({
      content: '',
      translationBrief: tutorialWeek?.translationBrief || '',
      imageUrl: '',
      imageAlt: ''
    });
  };

  const startAddingBrief = () => {
    setEditingBrief(prev => ({ ...prev, [selectedWeek]: true }));
    setEditForm({
      content: '',
      translationBrief: '',
      imageUrl: '',
      imageAlt: ''
    });
  };

  const removeBrief = async () => {

    
    try {
      setSaving(true);
      const token = localStorage.getItem('token');
      const user = JSON.parse(localStorage.getItem('user') || '{}');
      
      // Check if user is admin
      if (user.role !== 'admin') {
  
        return;
      }

              const response = await api.put(`/api/auth/admin/tutorial-brief/${selectedWeek}`, {
        translationBrief: '',
        weekNumber: selectedWeek
      });

      if (response.status >= 200 && response.status < 300) {
        const briefKey = `translationBrief_week_${selectedWeek}`;
        localStorage.removeItem(briefKey);
        setEditForm((prev) => ({ ...prev, translationBrief: '' }));
        await fetchTutorialTasks();

      } else {
        console.error('Failed to remove translation brief:', response.data);
        
      }
    } catch (error) {
      console.error('Failed to remove translation brief:', error);
      
    } finally {
      setSaving(false);
    }
  };

  const cancelEditing = () => {
    setEditingTask(null);
    setEditingBrief(prev => ({ ...prev, [selectedWeek]: false }));
    setEditForm({
      content: '',
      translationBrief: '',
      imageUrl: '',
      imageAlt: ''
    });
    setSelectedFile(null);
  };

  const saveTask = async () => {
    if (!editingTask) return;
    
    try {
      setSaving(true);
      const token = localStorage.getItem('token');
      const user = JSON.parse(localStorage.getItem('user') || '{}');
      
      // Check if user is admin
      if (user.role !== 'admin') {

        return;
      }

      const updateData = {
        ...editForm,
        weekNumber: selectedWeek
      };
      console.log('Saving task with data:', updateData);
      
              const response = await api.put(`/api/auth/admin/tutorial-tasks/${editingTask}`, updateData);

              if (response.status >= 200 && response.status < 300) {
          await fetchTutorialTasks(false);
          setEditingTask(null);

        } else {
          console.error('Failed to update tutorial task:', response.data);
          
        }
    } catch (error) {
      console.error('Failed to update tutorial task:', error);
      
    } finally {
      setSaving(false);
    }
  };

  const saveBrief = async () => {
    try {
      setSaving(true);
      const user = JSON.parse(localStorage.getItem('user') || '{}');
      
      // Check if user is admin
      if (user.role !== 'admin') {
        return;
      }

      console.log('Saving brief for week:', selectedWeek);
      console.log('Brief content:', editForm.translationBrief);

      // Save brief by creating or updating the first task of the week
      if (tutorialTasks.length > 0) {
        const firstTask = tutorialTasks[0];
        console.log('Updating first task with brief:', firstTask._id);
        
        const response = await api.put(`/api/auth/admin/tutorial-tasks/${firstTask._id}`, {
          ...firstTask,
          translationBrief: editForm.translationBrief,
          weekNumber: selectedWeek
        });

        if (response.status >= 200 && response.status < 300) {
          console.log('Brief saved successfully');
          // Optimistic UI update
          const briefKey = `translationBrief_week_${selectedWeek}`;
          localStorage.setItem(briefKey, editForm.translationBrief);
          setTutorialWeek(prev => prev ? { ...prev, translationBrief: editForm.translationBrief } : prev);
          setEditingBrief(prev => ({ ...prev, [selectedWeek]: false }));
          // Background refresh
          fetchTutorialTasks(false);
        } else {
          console.error('Failed to save brief:', response.data);
        }
      } else {
        // If no tasks exist, save the brief to localStorage
        console.log('No tasks available to save brief to - saving to localStorage');
        const briefKey = `translationBrief_week_${selectedWeek}`;
        localStorage.setItem(briefKey, editForm.translationBrief);
        setEditingBrief(prev => ({ ...prev, [selectedWeek]: false }));
      }
    } catch (error) {
      console.error('Failed to update translation brief:', error);
    } finally {
      setSaving(false);
    }
  };

  const startAddingTask = () => {
    setAddingTask(true);
    setEditForm({
      content: '',
      translationBrief: '',
      imageUrl: '',
      imageAlt: ''
    });
  };

  const cancelAddingTask = () => {
    setAddingTask(false);
    setEditForm({
      content: '',
      translationBrief: '',
      imageUrl: '',
      imageAlt: ''
    });
    setSelectedFile(null);
  };

  const startAddingImage = () => {
    setAddingImage(true);
    setImageForm({
      imageUrl: '',
      imageAlt: '',
      imageSize: 200,
      imageAlignment: 'center'
    });
  };

  const cancelAddingImage = () => {
    setAddingImage(false);
    setImageForm({
      imageUrl: '',
      imageAlt: '',
      imageSize: 200,
      imageAlignment: 'center'
    });
  };



  const saveNewTask = async () => {
    try {
      setSaving(true);
      const user = JSON.parse(localStorage.getItem('user') || '{}');
      
      // Check if user is admin
      if (user.role !== 'admin') {
        return;
      }

      // Allow either content or imageUrl, but not both empty
      if (!editForm.content.trim() && !editForm.imageUrl.trim()) {
        return;
      }

      console.log('Saving new task for week:', selectedWeek);
      console.log('Task content:', editForm.content);
      console.log('Image URL:', editForm.imageUrl);
      console.log('Image Alt:', editForm.imageAlt);

      const taskData = {
        title: `Week ${selectedWeek} Tutorial Task`,
        content: editForm.content,
        sourceLanguage: 'English',
        weekNumber: selectedWeek,
        category: 'tutorial',
        imageUrl: editForm.imageUrl || null,
        imageAlt: editForm.imageAlt || null,
        // Add imageSize and imageAlignment for image-only content
        ...(editForm.imageUrl && !editForm.content.trim() && { imageSize: 200 }),
        ...(editForm.imageUrl && !editForm.content.trim() && { imageAlignment: 'center' })
      };

      console.log('Task data being sent:', JSON.stringify(taskData, null, 2));

      console.log('Sending task data:', taskData);

              const response = await api.post('/api/auth/admin/tutorial-tasks', taskData);
      
      console.log('Task save response:', response.data);

      if (response.status >= 200 && response.status < 300) {
        console.log('Task saved successfully');
                  console.log('Saved task response:', response.data);
          console.log('Saved task response keys:', Object.keys(response.data || {}));
          console.log('Saved task response.task:', response.data?.task);
          console.log('Saved task response.task.imageUrl:', response.data?.task?.imageUrl);
          console.log('Saved task response.task.translationBrief:', response.data?.task?.translationBrief);
        await fetchTutorialTasks(false);
        setAddingTask(false);

              } else {
          console.error('Failed to add tutorial task:', response.data);
        }
      } catch (error) {
        console.error('Failed to add tutorial task:', error);
      } finally {
      setSaving(false);
    }
  };

  const saveNewImage = async () => {
    try {
      setSaving(true);
      const user = JSON.parse(localStorage.getItem('user') || '{}');
      
      // Check if user is admin
      if (user.role !== 'admin') {
        return;
      }

      if (!imageForm.imageUrl.trim()) {
        return;
      }

      const payload = {
        title: `Week ${selectedWeek} Image Task`,
        content: '', // Empty content for image-only task
        sourceLanguage: 'English',
        weekNumber: selectedWeek,
        category: 'tutorial',
        imageUrl: imageForm.imageUrl.trim(),
        imageAlt: imageForm.imageAlt.trim() || null,
        imageSize: imageForm.imageSize,
        imageAlignment: imageForm.imageAlignment
      };

      console.log('Saving new image task with payload:', payload);

      const response = await api.post('/api/auth/admin/tutorial-tasks', payload);

      if (response.data) {
        console.log('Image task saved successfully:', response.data);
        await fetchTutorialTasks(false);
        setAddingImage(false);
      } else {
        console.error('Failed to save image task');
      }
    } catch (error) {
      console.error('Failed to add image task:', error);
    } finally {
      setSaving(false);
    }
  };

  const deleteTask = async (taskId: string) => {

    
    try {
      const token = localStorage.getItem('token');
      const user = JSON.parse(localStorage.getItem('user') || '{}');
      
      // Check if user is admin
      if (user.role !== 'admin') {

        return;
      }

      const response = await api.delete(`/api/auth/admin/tutorial-tasks/${taskId}`);

      if (response.status >= 200 && response.status < 300) {
        await fetchTutorialTasks(false);

      } else {
        console.error('Failed to delete tutorial task:', response.data);
        
      }
    } catch (error) {
      console.error('Failed to delete tutorial task:', error);
      
    }
  };

  // Remove intrusive loading screen - just show content with loading state

  return (
    <div className="min-h-screen bg-gray-50 py-8">
      <div className="max-w-7xl mx-auto px-4 sm:px-6 lg:px-8">
        {/* Header */}
        <div className="mb-8">
          <div className="flex items-center mb-4">
            <AcademicCapIcon className="h-8 w-8 text-indigo-900 mr-3" />
            <h1 className="text-3xl font-bold text-gray-900">Tutorial Tasks</h1>
          </div>
          <p className="text-gray-600">
            Complete weekly tutorial tasks with your group to practice collaborative translation skills.
          </p>
        </div>

        {/* Week Selector */}
        <div className="mb-6">
          <div className="flex space-x-2 overflow-x-auto pb-2">
            {weeks.map((week) => (
              <button
                key={week}
                onClick={() => handleWeekChange(week)}
                className={`px-4 py-2 rounded-lg font-medium whitespace-nowrap transition-all duration-200 ease-in-out ${
                  selectedWeek === week
                    ? 'bg-indigo-600 text-white'
                    : 'bg-white text-gray-700 hover:bg-gray-50 border border-gray-300'
                }`}
              >
                Week {week}
              </button>
            ))}
          </div>
        </div>

                {/* Week Transition Loading Spinner */}
        {isWeekTransitioning && (
          <div className="fixed top-1/2 left-1/2 transform -translate-x-1/2 -translate-y-1/2 z-50">
            <div className="bg-white rounded-lg shadow-lg p-4 flex items-center space-x-3">
              <div className="animate-spin rounded-full h-6 w-6 border-b-2 border-indigo-600"></div>
              <span className="text-gray-700 font-medium">Loading...</span>
            </div>
          </div>
        )}

        {!isWeekTransitioning && (
          <>
            {/* Translation Brief - Shown once at the top */}
            {tutorialWeek && tutorialWeek.translationBrief ? (
          <div className="bg-white rounded-lg p-6 mb-8 border border-gray-200 shadow-sm">
            <div className="flex items-center justify-between mb-4">
              <div className="flex items-center space-x-3">
                <div className="bg-indigo-600 rounded-lg p-2">
                  <DocumentTextIcon className="h-5 w-5 text-white" />
                </div>
                <h3 className="text-indigo-900 font-semibold text-xl">Translation Brief</h3>
              </div>
              {JSON.parse(localStorage.getItem('user') || '{}').role === 'admin' && (
                <div className="flex items-center space-x-2">
                  {editingBrief[selectedWeek] ? (
                    <>
                      <button
                        onClick={saveBrief}
                        disabled={saving}
                        className="bg-indigo-500 hover:bg-indigo-600 text-white px-3 py-1 rounded-md transition-colors duration-200 text-sm"
                      >
                        {saving ? (
                          <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white"></div>
                        ) : (
                          <CheckIcon className="h-4 w-4" />
                        )}
                      </button>
                      <button
                        onClick={cancelEditing}
                        className="bg-gray-500 hover:bg-gray-600 text-white px-3 py-1 rounded-md transition-colors duration-200 text-sm"
                      >
                        <XMarkIcon className="h-4 w-4" />
                      </button>
                    </>
                  ) : (
                    <>
                      <button
                        onClick={startEditingBrief}
                        className="bg-gray-100 hover:bg-gray-200 text-gray-700 px-3 py-1 rounded-md transition-colors duration-200 text-sm"
                      >
                        <PencilIcon className="h-4 w-4" />
                      </button>
                      <button
                        onClick={() => removeBrief()}
                        className="bg-red-100 hover:bg-red-200 text-red-700 px-3 py-1 rounded-md transition-colors duration-200 text-sm"
                      >
                        <TrashIcon className="h-4 w-4" />
                      </button>
                    </>
                  )}
                </div>
              )}
            </div>
            {editingBrief[selectedWeek] ? (
              <div>
                <div className="flex items-center justify-end space-x-2 mb-2">
                  <button onClick={() => applyInlineFormat('tutorial-brief-input', editForm.translationBrief, v => setEditForm({ ...editForm, translationBrief: v }), '**')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">B</button>
                  <button onClick={() => applyInlineFormat('tutorial-brief-input', editForm.translationBrief, v => setEditForm({ ...editForm, translationBrief: v }), '*')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded italic">I</button>
                  <button onClick={() => applyLinkFormat('tutorial-brief-input', editForm.translationBrief || '', v => setEditForm({ ...editForm, translationBrief: v }))} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">Link</button>
                </div>
              <textarea id="tutorial-brief-input"
                value={editForm.translationBrief}
                onChange={(e) => setEditForm({ ...editForm, translationBrief: e.target.value })}
                className="w-full p-4 border border-gray-300 rounded-lg text-gray-900 leading-relaxed text-base bg-white focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500"
                rows={6}
                placeholder="Enter translation brief..."
              />
              </div>
            ) : (
              <div className="text-gray-900 leading-relaxed text-lg font-smiley whitespace-pre-wrap">{renderFormatted(tutorialWeek.translationBrief || '')}</div>
            )}

            {/* Group Google Doc (refined) */}
            <div className="mt-6 bg-white rounded-xl border border-gray-200 shadow-sm">
              <div className="px-6 pt-6">
                <h4 className="text-2xl font-bold text-gray-900">Group Google Doc</h4>
                <p className="mt-2 text-gray-600">Open or share each group’s working document.</p>
              </div>
              <div className="px-6 pb-4 pt-4 border-t border-gray-100">
              <GroupDocSection weekNumber={selectedWeek} />
              </div>
            </div>
            <div className="mt-4 p-3 bg-indigo-50 rounded-lg">
              <p className="text-indigo-900 text-sm">
                <strong>Note:</strong> Tutorial tasks are completed as group submissions. Each group should collaborate to create a single translation per task.
              </p>
            </div>
          </div>
        ) : (
          // Show add brief button when no brief exists
          JSON.parse(localStorage.getItem('user') || '{}').role === 'admin' && (
            <div className="bg-white rounded-lg p-6 mb-8 border border-gray-200 border-dashed shadow-sm">
              <div className="flex items-center justify-between mb-4">
                              <div className="flex items-center space-x-3">
                <div className="bg-indigo-100 rounded-lg p-2">
                  <DocumentTextIcon className="h-5 w-5 text-indigo-900" />
                </div>
                <h3 className="text-indigo-900 font-semibold text-xl">Translation Brief</h3>
              </div>
                <button
                  onClick={startAddingBrief}
                  className="bg-indigo-600 hover:bg-indigo-700 text-white px-6 py-3 rounded-lg font-medium flex items-center space-x-2 shadow-sm"
                >
                  <PlusIcon className="h-5 w-5" />
                  <span className="font-medium">Add Brief</span>
                </button>
              </div>
              {editingBrief[selectedWeek] && (
                <div className="space-y-4">
                  <div className="flex items-center justify-end space-x-2">
                    <button onClick={() => applyInlineFormat('tutorial-brief-input', editForm.translationBrief, v => setEditForm({ ...editForm, translationBrief: v }), '**')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">B</button>
                    <button onClick={() => applyInlineFormat('tutorial-brief-input', editForm.translationBrief, v => setEditForm({ ...editForm, translationBrief: v }), '*')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded italic">I</button>
                    <button onClick={() => applyLinkFormat('tutorial-brief-input', editForm.translationBrief || '', v => setEditForm({ ...editForm, translationBrief: v }))} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">Link</button>
                  </div>
                  <textarea
                    id="tutorial-brief-input"
                    value={editForm.translationBrief}
                    onChange={(e) => setEditForm({ ...editForm, translationBrief: e.target.value })}
                    className="w-full p-4 border border-gray-300 rounded-lg text-gray-900 leading-relaxed text-base bg-white focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500"
                    rows={6}
                    placeholder="Enter translation brief..."
                  />
                  <div className="flex justify-end space-x-2">
                    <button
                      onClick={saveBrief}
                      disabled={saving}
                      className="bg-indigo-600 hover:bg-indigo-700 text-white px-6 py-3 rounded-lg font-medium flex items-center space-x-2 shadow-sm"
                    >
                      {saving ? (
                        <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white"></div>
                      ) : (
                        <>
                          <CheckIcon className="h-5 w-5" />
                          <span className="font-medium">Save Brief</span>
                        </>
                      )}
                    </button>
                    <button
                      onClick={cancelEditing}
                      className="bg-gray-500 hover:bg-gray-600 text-white px-6 py-3 rounded-lg font-medium flex items-center space-x-2 shadow-sm"
                    >
                      <XMarkIcon className="h-5 w-5" />
                      <span className="font-medium">Cancel</span>
                    </button>
                  </div>
                </div>
              )}
            </div>
          )
        )}

        {/* Tutorial Tasks */}
        <div className="space-y-6">
          {/* Add New Tutorial Task Section */}
          {JSON.parse(localStorage.getItem('user') || '{}').role === 'admin' && (
            <div className="mb-8">
              {addingTask ? (
                <div className="bg-white rounded-lg p-6 border border-gray-200 shadow-sm">
                  <div className="flex items-center space-x-3 mb-4">
                    <div className="bg-gray-100 rounded-lg p-2">
                      <PlusIcon className="h-4 w-4 text-gray-600" />
                    </div>
                    <h4 className="text-gray-900 font-semibold text-lg">New Tutorial Task</h4>
                  </div>
                  <div className="space-y-4">
                    <div>
                      <label className="block text-sm font-medium text-gray-700 mb-2">
                        Task Content *
                      </label>
                      <div className="flex items-center justify-end space-x-2 mb-2">
                        <button onClick={() => applyInlineFormat('tutorial-newtask-input', editForm.content, v => setEditForm({ ...editForm, content: v }), '**')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">B</button>
                        <button onClick={() => applyInlineFormat('tutorial-newtask-input', editForm.content, v => setEditForm({ ...editForm, content: v }), '*')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded italic">I</button>
                        <button onClick={() => applyLinkFormat('tutorial-newtask-input', editForm.content || '', v => setEditForm({ ...editForm, content: v }))} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">Link</button>
                      </div>
                      <textarea
                        id="tutorial-newtask-input"
                        value={editForm.content}
                        onChange={(e) => setEditForm({ ...editForm, content: e.target.value })}
                        className="w-full px-4 py-3 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 bg-white"
                        rows={4}
                        placeholder="Enter tutorial task content..."
                      />
                    </div>
                    <div className="space-y-4">
                      <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-2">
                            Image URL (Optional)
                          </label>
                          <input
                            type="url"
                            value={editForm.imageUrl}
                            onChange={(e) => setEditForm({ ...editForm, imageUrl: e.target.value })}
                            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500"
                            placeholder="https://example.com/image.jpg"
                          />
                        </div>
                        <div>
                          <label className="block text-sm font-medium text-gray-700 mb-2">
                            Image Alt Text (Optional)
                          </label>
                          <input
                            type="text"
                            value={editForm.imageAlt}
                            onChange={(e) => setEditForm({ ...editForm, imageAlt: e.target.value })}
                            className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500"
                            placeholder="Description of the image"
                          />
                        </div>
                      </div>
                      
                      {/* File Upload Section - Only for Week 2+ */}
                      {selectedWeek >= 2 && (
                        <div className="border-t pt-4">
                          <label className="block text-sm font-medium text-gray-700 mb-2">
                            Upload Local Image (Optional)
                          </label>
                          <div className="space-y-2">
                            <input
                              type="file"
                              accept="image/*"
                              onChange={handleFileChange}
                              className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500"
                            />
                            {selectedFile && (
                              <div className="flex items-center space-x-2">
                                <span className="text-sm text-gray-600">{selectedFile.name}</span>
                                <button
                                  type="button"
                                  onClick={async () => {
                                    try {
                                      const imageUrl = await handleFileUpload(selectedFile);
                                      setEditForm({ ...editForm, imageUrl });
                                                                                setSelectedFile(null);
                                                                          } catch (error) {
                                        console.error('Upload error:', error);
                                      }
                                  }}
                                  disabled={uploading}
                                  className="bg-green-500 hover:bg-green-600 disabled:bg-gray-400 text-white px-3 py-1 rounded text-sm"
                                >
                                  {uploading ? 'Uploading...' : 'Upload'}
                                </button>
                              </div>
                            )}
                          </div>
                        </div>
                      )}
                    </div>
                  </div>
                  <div className="flex justify-end space-x-2 mt-4">
                    <button
                      onClick={saveNewTask}
                      disabled={saving}
                      className="bg-indigo-500 hover:bg-indigo-600 text-white px-4 py-2 rounded-lg transition-colors duration-200 flex items-center space-x-2 text-sm"
                    >
                      {saving ? (
                        <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white"></div>
                      ) : (
                        <>
                          <CheckIcon className="h-4 w-4" />
                          <span>Save Task</span>
                        </>
                      )}
                    </button>
                    <button
                      onClick={cancelAddingTask}
                      className="bg-gray-500 hover:bg-gray-600 text-white px-4 py-2 rounded-lg transition-colors duration-200 flex items-center space-x-2 text-sm"
                    >
                      <XMarkIcon className="h-4 w-4" />
                      <span>Cancel</span>
                    </button>
                  </div>
                </div>
              ) : addingImage ? (
                <div className="bg-white rounded-lg p-6 border border-gray-200 shadow-sm">
                  <div className="flex items-center space-x-3 mb-4">
                    <div className="bg-blue-100 rounded-lg p-2">
                      <PlusIcon className="h-4 w-4 text-blue-600" />
                    </div>
                    <h4 className="text-blue-900 font-semibold text-lg">New Image Task</h4>
                  </div>
                  <div className="space-y-4">
                    <div>
                      <label className="block text-sm font-medium text-gray-700 mb-2">
                        Image URL *
                      </label>
                      <input
                        type="url"
                        value={imageForm.imageUrl}
                        onChange={(e) => setImageForm({ ...imageForm, imageUrl: e.target.value })}
                        className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
                        placeholder="https://example.com/image.jpg"
                      />
                    </div>
                    <div>
                      <label className="block text-sm font-medium text-gray-700 mb-2">
                        Image Alt Text (Optional)
                      </label>
                      <input
                        type="text"
                        value={imageForm.imageAlt}
                        onChange={(e) => setImageForm({ ...imageForm, imageAlt: e.target.value })}
                        className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
                        placeholder="Description of the image"
                      />
                    </div>
                    
                    {/* File Upload Section */}
                    <div className="border-t pt-4">
                      <label className="block text-sm font-medium text-gray-700 mb-2">
                        Upload Local Image (Optional)
                      </label>
                      <div className="space-y-2">
                        <input
                          type="file"
                          accept="image/*"
                          onChange={handleFileChange}
                          className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
                        />
                        {selectedFile && (
                          <div className="flex items-center space-x-2">
                            <span className="text-sm text-gray-600">{selectedFile.name}</span>
                            <button
                              type="button"
                              onClick={async () => {
                                try {
                                  const imageUrl = await handleFileUpload(selectedFile);
                                  setImageForm({ ...imageForm, imageUrl });
                                  setSelectedFile(null);
                                } catch (error) {
                                  console.error('Upload error:', error);
                                }
                              }}
                              disabled={uploading}
                              className="bg-green-500 hover:bg-green-600 disabled:bg-gray-400 text-white px-3 py-1 rounded text-sm"
                            >
                              {uploading ? 'Uploading...' : 'Upload'}
                            </button>
                          </div>
                        )}
                      </div>
                    </div>

                    <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                      <div>
                        <label className="block text-sm font-medium text-gray-700 mb-2">
                          Image Size
                        </label>
                        <select
                          value={imageForm.imageSize}
                          onChange={(e) => setImageForm({ ...imageForm, imageSize: parseInt(e.target.value) })}
                          className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
                        >
                          <option value={150}>150px</option>
                          <option value={200}>200px</option>
                          <option value={300}>300px</option>
                        </select>
                      </div>
                      <div>
                        <label className="block text-sm font-medium text-gray-700 mb-2">
                          Image Alignment
                        </label>
                        <select
                          value={imageForm.imageAlignment}
                          onChange={(e) => setImageForm({ ...imageForm, imageAlignment: e.target.value as 'left' | 'center' | 'right' })}
                          className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-blue-500"
                        >
                          <option value="left">Left</option>
                          <option value="center">Center</option>
                          <option value="right">Right</option>
                          {selectedWeek >= 4 && <option value="portrait-split">Portrait Split (image left, text+input right)</option>}
                        </select>
                      </div>
                    </div>
                  </div>
                  <div className="flex justify-end space-x-2 mt-4">
                    <button
                      onClick={saveNewImage}
                      disabled={saving}
                      className="bg-blue-500 hover:bg-blue-600 text-white px-4 py-2 rounded-lg transition-colors duration-200 flex items-center space-x-2 text-sm"
                    >
                      {saving ? (
                        <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white"></div>
                      ) : (
                        <>
                          <CheckIcon className="h-4 w-4" />
                          <span>Save Image</span>
                        </>
                      )}
                    </button>
                    <button
                      onClick={cancelAddingImage}
                      className="bg-gray-500 hover:bg-gray-600 text-white px-4 py-2 rounded-lg transition-colors duration-200 flex items-center space-x-2 text-sm"
                    >
                      <XMarkIcon className="h-4 w-4" />
                      <span>Cancel</span>
                    </button>
                  </div>
                </div>
              ) : (
                <div className="bg-white rounded-lg p-6 border border-gray-200 border-dashed shadow-sm">
                  <div className="flex items-center justify-between">
                    <div className="flex items-center space-x-3">
                      <div className="bg-gray-100 rounded-lg p-2">
                        <PlusIcon className="h-5 w-5 text-gray-600" />
                      </div>
                      <div>
                        <h3 className="text-lg font-semibold text-indigo-900">Add New Tutorial Task</h3>
                        <p className="text-gray-600 text-sm">Create a new tutorial task for Week {selectedWeek}</p>
                      </div>
                    </div>
                    <div className="flex space-x-3">
                      <div className="flex space-x-3">
                        <button
                          onClick={startAddingTask}
                          className="bg-indigo-600 hover:bg-indigo-700 text-white px-6 py-3 rounded-lg font-medium flex items-center space-x-2 shadow-sm"
                        >
                          <PlusIcon className="h-5 w-5" />
                          <span className="font-medium">Add Task</span>
                        </button>
                        {selectedWeek >= 3 && (
                          <button
                            onClick={startAddingImage}
                            className="bg-blue-600 hover:bg-blue-700 text-white px-6 py-3 rounded-lg font-medium flex items-center space-x-2 shadow-sm"
                          >
                            <PlusIcon className="h-5 w-5" />
                            <span className="font-medium">Add Image</span>
                          </button>
                        )}
                      </div>

                    </div>
                  </div>
                </div>
              )}
            </div>
          )}

          {tutorialTasks.length === 0 && !addingTask ? (
            <div className="text-center py-12">
              <DocumentTextIcon className="h-12 w-12 text-gray-400 mx-auto mb-4" />
              <h3 className="text-lg font-medium text-gray-900 mb-2">
                No tutorial tasks available
              </h3>
              <p className="text-gray-600">
                Tutorial tasks for Week {selectedWeek} haven't been set up yet.
              </p>
            </div>
          ) : (
            tutorialTasks.map((task) => (
              <div key={task._id} className="bg-white rounded-xl shadow-lg border border-gray-100 p-8 hover:shadow-xl transition-shadow duration-300">
                <div className="mb-6">
                  <div className="flex items-center justify-between mb-4">
                    <div className="flex items-center space-x-3">
                      <div className="bg-indigo-100 rounded-full p-2">
                        <DocumentTextIcon className="h-5 w-5 text-indigo-900" />
                      </div>
                      <div>
                        <h3 className="text-lg font-semibold text-gray-900 flex items-center">Source Text #{tutorialTasks.indexOf(task) + 1}
                          {JSON.parse(localStorage.getItem('user') || '{}').role === 'admin' && selectedWeek >= 4 && (
                            <span className="ml-2 inline-flex items-center space-x-1">
                              <button
                                className="px-2 py-1 text-xs bg-gray-100 rounded hover:bg-gray-200"
                                onClick={() => moveTask(task._id, 'up')}
                                title="Move up"
                              >↑</button>
                              <button
                                className="px-2 py-1 text-xs bg-gray-100 rounded hover:bg-gray-200"
                                onClick={() => moveTask(task._id, 'down')}
                                title="Move down"
                              >↓</button>
                            </span>
                          )}
                        </h3>
                      </div>
                    </div>
                    {JSON.parse(localStorage.getItem('user') || '{}').role === 'admin' && (
                      <div className="flex items-center space-x-2">
                        {editingTask === task._id ? (
                          <>
                            <button
                              onClick={saveTask}
                              disabled={saving}
                              className="bg-green-100 hover:bg-green-200 text-green-700 px-3 py-1 rounded-lg transition-colors duration-200"
                            >
                              {saving ? (
                                <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-green-600"></div>
                              ) : (
                                <CheckIcon className="h-4 w-4" />
                              )}
                            </button>
                            <button
                              onClick={cancelEditing}
                              className="bg-red-100 hover:bg-red-200 text-red-700 px-3 py-1 rounded-lg transition-colors duration-200"
                            >
                              <XMarkIcon className="h-4 w-4" />
                            </button>
                          </>
                        ) : (
                          <>
                            <button
                              onClick={() => startEditing(task)}
                              className="bg-gray-100 hover:bg-gray-200 text-gray-700 px-3 py-1 rounded-md transition-colors duration-200 text-sm"
                            >
                              <PencilIcon className="h-4 w-4" />
                            </button>
                            <button
                              onClick={() => deleteTask(task._id)}
                              className="bg-red-100 hover:bg-red-200 text-red-700 px-3 py-1 rounded-lg transition-colors duration-200"
                            >
                              <TrashIcon className="h-4 w-4" />
                            </button>
                          </>
                        )}
                      </div>
                    )}
                  </div>

                  {/* Content - Clean styling with image support */}
                  <div className="bg-gradient-to-r from-indigo-50 to-blue-50 rounded-xl p-6 mb-6 border border-indigo-200">
                    {editingTask === task._id ? (
                      <div className="space-y-4">
                        <div className="flex items-center justify-end space-x-2 mb-2">
                          <button onClick={() => applyInlineFormat('tutorial-newtask-input', editForm.content, v => setEditForm({ ...editForm, content: v }), '**')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">B</button>
                          <button onClick={() => applyInlineFormat('tutorial-newtask-input', editForm.content, v => setEditForm({ ...editForm, content: v }), '*')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded italic">I</button>
                          <button onClick={() => applyLinkFormat('tutorial-newtask-input', editForm.content || '', v => setEditForm({ ...editForm, content: v }))} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">Link</button>
                        </div>
                        <textarea
                          id="tutorial-newtask-input"
                          value={editForm.content}
                          onChange={(e) => setEditForm({...editForm, content: e.target.value})}
                          className="w-full px-4 py-3 border border-indigo-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 bg-white"
                          rows={5}
                          placeholder="Enter source text..."
                        />
                        <div className="space-y-4">
                          <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
                            <div>
                              <label className="block text-sm font-medium text-gray-700 mb-2">Image URL</label>
                              <input
                                type="url"
                                value={editForm.imageUrl}
                                onChange={(e) => setEditForm({...editForm, imageUrl: e.target.value})}
                                className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500"
                                placeholder="https://example.com/image.jpg"
                              />
                            </div>
                            <div>
                              <label className="block text-sm font-medium text-gray-700 mb-2">Image Alt Text</label>
                              <input
                                type="text"
                                value={editForm.imageAlt}
                                onChange={(e) => setEditForm({...editForm, imageAlt: e.target.value})}
                                className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500"
                                placeholder="Description of the image"
                              />
                            </div>
                          </div>
                          
                          {/* File Upload Section - Only for Week 2+ */}
                          {selectedWeek >= 2 && (
                            <div className="border-t pt-4">
                              <label className="block text-sm font-medium text-gray-700 mb-2">
                                Upload Local Image (Optional)
                              </label>
                              <div className="space-y-2">
                                <input
                                  type="file"
                                  accept="image/*"
                                  onChange={handleFileChange}
                                  className="w-full px-3 py-2 border border-gray-300 rounded-md focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500"
                                />
                                {selectedFile && (
                                  <div className="flex items-center space-x-2">
                                    <span className="text-sm text-gray-600">{selectedFile.name}</span>
                                    <button
                                      type="button"
                                      onClick={async () => {
                                        try {
                                          const imageUrl = await handleFileUpload(selectedFile);
                                          console.log('Uploaded image URL:', imageUrl);
                                          setEditForm({ ...editForm, imageUrl });
                                          console.log('Updated editForm:', { ...editForm, imageUrl });
                                          
                                          // Save the task with the new image URL
                                          if (editingTask) {
                                            console.log('Saving task with image URL:', imageUrl);
                                            const response = await api.put(`/api/auth/admin/tutorial-tasks/${editingTask}`, {
                                              ...editForm,
                                              imageUrl,
                                              weekNumber: selectedWeek
                                            });
                                            console.log('Task save response:', response.data);
                                            
                                            if (response.status >= 200 && response.status < 300) {
                                              await fetchTutorialTasks(false); // Refresh tasks
                                            }
                                          }
                                          
                                          setSelectedFile(null);
                                        } catch (error) {
                                          console.error('Upload error:', error);
                                        }
                                      }}
                                      disabled={uploading}
                                      className="bg-green-500 hover:bg-green-600 disabled:bg-gray-400 text-white px-3 py-1 rounded text-sm"
                                    >
                                      {uploading ? 'Uploading...' : 'Upload'}
                                    </button>
                                  </div>
                                )}
                              </div>
                            </div>
                          )}
                        </div>
                      </div>
                    ) : (
                      <div className="space-y-4">
                        {task.imageUrl ? (
                          task.imageAlignment === 'portrait-split' && selectedWeek >= 4 ? (
                            // Portrait split layout
                            <div className="grid grid-cols-1 md:grid-cols-2 gap-6 items-start">
                              <div className="w-full flex justify-center">
                                <div className="inline-block rounded-lg shadow-md overflow-hidden">
                                  <img src={task.imageUrl} alt={task.imageAlt || 'Uploaded image'} className="w-auto h-auto" style={{ maxHeight: '520px', maxWidth: '100%', objectFit: 'contain' }} />
                                </div>
                              </div>
                              <div className="w-full">
                                <div className="bg-indigo-50 rounded-lg p-4 mb-4 border border-indigo-200">
                                  <h5 className="text-indigo-900 font-semibold mb-2">Source Text (from image)</h5>
                                  <div
                                    id={`tutorial-source-${task._id}`}
                                    ref={(el) => {
                                      if (el) {
                                        const h = el.getBoundingClientRect().height;
                                        if (h && Math.abs((sourceHeights[task._id] || 0) - h) > 1) {
                                          setSourceHeights((prev) => ({ ...prev, [task._id]: h }));
                                        }
                                      }
                                    }}
                                    className="text-indigo-900 leading-relaxed text-lg font-source-text whitespace-pre-wrap"
                                  >{renderFormatted(task.content)}</div>
                                </div>
                                {localStorage.getItem('token') && (
                                  <div className="bg-white rounded-lg p-4 border border-gray-200">
                                    <h5 className="text-gray-900 font-semibold mb-2">Your Group's Translation</h5>
                                    {/* Group selection (same as bottom block), shown here for portrait-split */}
                                    <div className="mb-2">
                                      <label className="block text-xs font-medium text-gray-700 mb-1">Select Your Group</label>
                                      <select
                                        value={selectedGroups[task._id] || ''}
                                        onChange={(e) => setSelectedGroups({ ...selectedGroups, [task._id]: parseInt(e.target.value) })}
                                        className="w-40 px-2 py-1 border border-gray-300 rounded focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 bg-white text-xs"
                                      >
                                        <option value="">Choose...</option>
                                        {[1,2,3,4,5,6,7,8].map((g) => (<option key={g} value={g}>Group {g}</option>))}
                                      </select>
                                    </div>
                                    <div className="flex items-center justify-end space-x-2 mb-2">
                                      <button onClick={() => applyInlineFormat(`tutorial-translation-${task._id}`, translationText[task._id] || '', v => setTranslationText({ ...translationText, [task._id]: v }), '**')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">B</button>
                                      <button onClick={() => applyInlineFormat(`tutorial-translation-${task._id}`, translationText[task._id] || '', v => setTranslationText({ ...translationText, [task._id]: v }), '*')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded italic">I</button>
                                      <button onClick={() => applyLinkFormat(`tutorial-translation-${task._id}`, translationText[task._id] || '', v => setTranslationText({ ...translationText, [task._id]: v }))} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">Link</button>
                                    </div>
                                      <textarea
                                        id={`tutorial-translation-${task._id}`}
                                        value={translationText[task._id] || ''}
                                        onChange={(e) => setTranslationText({ ...translationText, [task._id]: e.target.value })}
                                        className="w-full px-4 py-3 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 bg-white"
                                        style={{ height: sourceHeights[task._id] ? `${sourceHeights[task._id]}px` : 'auto' }}
                                        rows={4}
                                        placeholder="Enter your group's translation here..."
                                      />
                                    <div className="flex justify-end mt-2">
                                      <button onClick={() => handleSubmitTranslation(task._id)} disabled={submitting[task._id]} className="bg-indigo-500 hover:bg-indigo-600 disabled:bg-gray-400 text-white px-4 py-2 rounded-lg text-sm">{submitting[task._id] ? 'Submitting...' : 'Submit Translation'}</button>
                                    </div>
                                  </div>
                                )}
                              </div>
                            </div>
                          ) : task.content === 'Image-based task' ? (
                            // Image-only layout with dynamic sizing and alignment
                            <div className={`flex flex-col md:flex-row gap-6 items-start ${
                              task.imageAlignment === 'left' ? 'md:flex-row' : 
                              task.imageAlignment === 'right' ? 'md:flex-row-reverse' : 
                              'md:flex-col'
                            }`}>
                              {/* Image section */}
                              <div className={`${
                                task.imageAlignment === 'left' ? 'w-full md:w-1/2' :
                                task.imageAlignment === 'right' ? 'w-full md:w-1/2' :
                                'w-full'
                              } flex ${
                                task.imageAlignment === 'left' ? 'justify-start' :
                                task.imageAlignment === 'right' ? 'justify-end' :
                                'justify-center'
                              }`}>
                                <div className="inline-block rounded-lg shadow-md overflow-hidden">
                                  <img src={task.imageUrl} alt={task.imageAlt || 'Uploaded image'} className="w-full h-auto" style={{ height: `${task.imageSize || 200}px`, width: 'auto', objectFit: 'contain' }} onError={(e) => { console.error('Image failed to load:', e); (e.currentTarget as HTMLImageElement).style.display = 'none'; }} />
                                  {task.imageAlt && (<div className="text-xs text-gray-500 mt-2 text-center">Alt: {task.imageAlt}</div>)}
                                </div>
                              </div>
                            </div>
                          ) : (
                            // Regular task layout
                            <div className="flex flex-col md:flex-row gap-6 items-start">
                              <div className="w-full md:w-1/2 flex justify-center">
                                {task.imageUrl.startsWith('data:') ? (
                                  <div className="inline-block rounded-lg shadow-md overflow-hidden">
                                    <img src={task.imageUrl} alt={task.imageAlt || 'Uploaded image'} className="w-full h-auto" style={{ height: '200px', width: 'auto', objectFit: 'contain' }} onError={(e) => { console.error('Image failed to load:', e); (e.currentTarget as HTMLImageElement).style.display = 'none'; }} />
                                  </div>
                                ) : (
                                  <div className="inline-block rounded-lg shadow-md bg-green-500 text-white p-6 text-center">
                                    <div className="text-3xl mb-2">📷</div>
                                    <div className="font-semibold">Image Uploaded</div>
                                    <div className="text-sm opacity-75">{task.imageUrl}</div>
                                  </div>
                                )}
                              </div>
                              <div className="w-full md:w-1/2">
                                <div className="text-indigo-900 leading-relaxed text-lg font-source-text whitespace-pre-wrap">{renderFormatted(task.content)}</div>
                              </div>
                            </div>
                          )
                        ) : (
                          // Text only when no image
                          <div>
                            <div className="text-indigo-900 leading-relaxed text-lg font-source-text whitespace-pre-wrap">{renderFormatted(task.content)}</div>
                          </div>
                        )}
                        {(() => { console.log('Task imageUrl check:', task._id, task.imageUrl, !!task.imageUrl); return null; })()}
                      </div>
                    )}
                  </div>


                </div>

                {/* All Submissions for this Task */}
                {userSubmissions[task._id] && userSubmissions[task._id].length > 0 && (
                  <div className="bg-gradient-to-r from-white to-indigo-50 rounded-xl p-6 mb-6 border border-stone-200">
                    <div className="flex items-center justify-between mb-4">
                      <div className="flex items-center space-x-2">
                        <div className="bg-indigo-100 rounded-full p-1">
                          <CheckCircleIcon className="h-4 w-4 text-indigo-900" />
                        </div>
                        <h4 className="text-stone-900 font-semibold text-lg">All Submissions ({userSubmissions[task._id].length})</h4>
                      </div>
                      <button
                        onClick={() => toggleExpanded(task._id)}
                        className="flex items-center space-x-1 text-indigo-900 hover:text-indigo-900 text-sm font-medium"
                      >
                        <span>{expandedSections[task._id] ? 'Collapse' : 'Expand'}</span>
                        <svg
                          className={`w-4 h-4 transition-transform duration-200 ${expandedSections[task._id] ? 'rotate-180' : ''}`}
                          fill="none"
                          stroke="currentColor"
                          viewBox="0 0 24 24"
                        >
                          <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 9l-7 7-7-7" />
                        </svg>
                      </button>
                    </div>
                    <div className={`grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-3 transition-all duration-300 ${
                      expandedSections[task._id] 
                        ? 'max-h-none overflow-visible' 
                        : 'max-h-0 overflow-hidden'
                    }`}>
                      {userSubmissions[task._id].map((submission, index) => (
                        <div key={submission._id} className="bg-white rounded-lg p-3 border border-stone-200 flex flex-col justify-between h-full">
                          <div className="flex items-center justify-between mb-2">
                            <div className="flex items-center space-x-2">
                              {submission.isOwner && (
                                <span className="inline-block bg-purple-100 text-purple-800 text-xs px-1.5 py-0.5 rounded-full">
                                  Your Submission
                                </span>
                              )}
                            </div>
                            {getStatusIcon(submission.status)}
                          </div>
                          <p className="text-stone-800 leading-relaxed text-base mb-2 font-smiley whitespace-pre-wrap">{renderFormatted(submission.transcreation || '')}</p>
                          <div className="flex items-center space-x-4 text-xs text-stone-700 mt-auto">
                            <div className="flex items-center space-x-1">
                              <span className="font-medium">Group:</span>
                              <span className="bg-indigo-100 px-1.5 py-0.5 rounded-full text-indigo-900 text-xs">
                                {submission.groupNumber}
                              </span>
                            </div>
                            <div className="flex items-center space-x-1">
                              <span className="font-medium">Votes:</span>
                              <span className="bg-indigo-100 px-1.5 py-0.5 rounded-full text-indigo-900 text-xs">
                                {(submission.voteCounts?.['1'] || 0) + (submission.voteCounts?.['2'] || 0) + (submission.voteCounts?.['3'] || 0)}
                              </span>
                            </div>
                          </div>
                          <div className="flex items-center space-x-2 mt-2">
                            {(submission.isOwner || (JSON.parse(localStorage.getItem('user') || '{}').role === 'admin')) && (
                              <button
                                onClick={() => handleEditSubmission(submission._id, submission.transcreation)}
                                className="text-indigo-900 hover:text-indigo-900 text-sm font-medium"
                              >
                                Edit
                              </button>
                            )}
                            {JSON.parse(localStorage.getItem('user') || '{}').role === 'admin' && (
                              <button
                                onClick={() => handleDeleteSubmission(submission._id)}
                                className="text-red-600 hover:text-red-800 text-sm font-medium"
                              >
                                Delete
                              </button>
                            )}
                          </div>
                        </div>
                      ))}
                    </div>
                  </div>
                )}

                                  {/* Translation Input (always show if user is logged in, but hide for image-only content) */}
                  {localStorage.getItem('token') && task.content !== 'Image-based task' && task.imageAlignment !== 'portrait-split' && (
                                  <div className="bg-white rounded-lg p-6 border border-gray-200 shadow-sm">
                    <div className="flex items-center space-x-3 mb-4">
                      <div className="bg-gray-100 rounded-lg p-2">
                        <DocumentTextIcon className="h-4 w-4 text-gray-600" />
                      </div>
                      <h4 className="text-gray-900 font-semibold text-lg">Group Translation</h4>
                    </div>
                    
                    {/* Group Selection */}
                    <div className="mb-4">
                      <label className="block text-sm font-medium text-gray-700 mb-2">
                        Select Your Group *
                      </label>
                      <select
                        value={selectedGroups[task._id] || ''}
                        onChange={(e) => setSelectedGroups({ ...selectedGroups, [task._id]: parseInt(e.target.value) })}
                        className="w-48 px-3 py-2 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 bg-white text-sm"
                        required
                      >
                        <option value="">Choose your group...</option>
                        {[1, 2, 3, 4, 5, 6, 7, 8].map((group) => (
                          <option key={group} value={group}>
                            Group {group}
                          </option>
                        ))}
                      </select>
                    </div>

                    <div className="mb-4">
                      <label className="block text-sm font-medium text-gray-700 mb-2">
                        Your Group's Translation *
                      </label>
                      <div className="flex items-center justify-end space-x-2 mb-2">
                        <button onClick={() => applyInlineFormat(`tutorial-translation-${task._id}`, translationText[task._id] || '', v => setTranslationText({ ...translationText, [task._id]: v }), '**')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">B</button>
                        <button onClick={() => applyInlineFormat(`tutorial-translation-${task._id}`, translationText[task._id] || '', v => setTranslationText({ ...translationText, [task._id]: v }), '*')} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded italic">I</button>
                        <button onClick={() => applyLinkFormat(`tutorial-translation-${task._id}`, translationText[task._id] || '', v => setTranslationText({ ...translationText, [task._id]: v }))} className="px-2 py-1 text-xs bg-indigo-100 text-indigo-900 rounded">Link</button>
                      </div>
                      <textarea
                        id={`tutorial-translation-${task._id}`}
                        value={translationText[task._id] || ''}
                        onChange={(e) => setTranslationText({ ...translationText, [task._id]: e.target.value })}
                        className="w-full px-4 py-3 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-indigo-500 focus:border-indigo-500 bg-white"
                        rows={4}
                        placeholder="Enter your group's translation here..."
                      />
                    </div>

                    <button
                      onClick={() => handleSubmitTranslation(task._id)}
                      disabled={submitting[task._id]}
                      className="bg-indigo-500 hover:bg-indigo-600 disabled:bg-gray-400 text-white px-6 py-3 rounded-lg font-medium flex items-center justify-center transition-all duration-200"
                    >
                      {submitting[task._id] ? (
                        <>
                          <div className="animate-spin rounded-full h-4 w-4 border-b-2 border-white mr-2"></div>
                          Submitting...
                        </>
                      ) : (
                        <>
                          Submit Group Translation
                          <ArrowRightIcon className="h-4 w-4 ml-2" />
                        </>
                      )}
                    </button>
                  </div>
                )}

                {/* Show login message for visitors */}
                {!localStorage.getItem('token') && (
                  <div className="bg-gradient-to-r from-gray-50 to-indigo-50 rounded-xl p-6 border border-gray-200">
                    <div className="flex items-center space-x-2 mb-4">
                      <div className="bg-gray-100 rounded-full p-1">
                        <DocumentTextIcon className="h-4 w-4 text-gray-600" />
                      </div>
                      <h4 className="text-gray-900 font-semibold text-lg">Login Required</h4>
                    </div>
                    <p className="text-gray-700 mb-4">
                      Please log in to submit translations for this tutorial task.
                    </p>
                    <button
                      onClick={() => window.location.href = '/login'}
                      className="bg-indigo-500 hover:bg-indigo-600 text-white px-6 py-3 rounded-lg font-medium flex items-center justify-center transition-all duration-200"
                    >
                      Go to Login
                      <ArrowRightIcon className="h-4 w-4 ml-2" />
                    </button>
                  </div>
                )}
              </div>
            ))
          )}
        </div>
        </>
        )}
      </div>

      {/* Edit Submission Modal */}
      {editingSubmission && (
        <div className="fixed inset-0 bg-black bg-opacity-50 flex items-center justify-center z-50">
          <div className="bg-white rounded-lg p-6 w-full max-w-2xl mx-4">
            <div className="flex items-center justify-between mb-4">
              <h3 className="text-lg font-semibold text-gray-900">Edit Translation</h3>
              <button
                onClick={cancelEditSubmission}
                className="text-gray-400 hover:text-gray-600"
              >
                <XMarkIcon className="h-6 w-6" />
              </button>
            </div>
            <div className="mb-4">
              <textarea
                value={editSubmissionText}
                onChange={(e) => setEditSubmissionText(e.target.value)}
                className="w-full px-4 py-3 border border-gray-300 rounded-lg focus:outline-none focus:ring-2 focus:ring-purple-500 focus:border-purple-500"
                rows={6}
                placeholder="Enter your translation..."
              />
            </div>
            <div className="flex justify-end space-x-3">
              <button
                onClick={cancelEditSubmission}
                className="px-4 py-2 text-gray-600 hover:text-gray-800 border border-gray-300 rounded-lg"
              >
                Cancel
              </button>
              <button
                onClick={saveEditedSubmission}
                className="px-4 py-2 bg-purple-600 text-white rounded-lg hover:bg-purple-700"
              >
                Save Changes
              </button>
            </div>
          </div>
        </div>
      )}
    </div>
  );
};

export default TutorialTasks;