import React, { useState, useRef } from 'react';
import { Button } from './ui/button';
import { Input } from './ui/input';
import { Label } from './ui/label';
import { Textarea } from './ui/textarea';
import { Dialog, DialogContent, DialogTitle } from './ui/dialog';
import type { User as UserType } from '../App';
import { toast } from 'sonner';
import {
  Select,
  SelectContent,
  SelectItem,
  SelectTrigger,
  SelectValue,
} from './ui/select';

interface ProfileEditorProps {
  user: UserType;
  onSave: (user: UserType) => void;
  onClose: () => void;
}

export function ProfileEditor({ user, onSave, onClose }: ProfileEditorProps) {
  const [name, setName] = useState(user.name);
  const [email, setEmail] = useState(user.email);
  const [studentId, setStudentId] = useState('S12345678');
  const [department, setDepartment] = useState('Computer Science');
  const [year, setYear] = useState('3rd Year');
  const [major, setMajor] = useState('Artificial Intelligence');
  const [bio, setBio] = useState('Passionate about AI and machine learning');
  const [photoPreview, setPhotoPreview] = useState<string | null>(null);
  const fileInputRef = useRef<HTMLInputElement>(null);

  const handleSave = () => {
    if (name.trim() && email.trim()) {
      onSave({ name: name.trim(), email: email.trim() });
      toast.success('Profile updated successfully!');
      onClose();
    } else {
      toast.error('Please fill in all required fields');
    }
  };

  const handlePhotoSelect = (e: React.ChangeEvent<HTMLInputElement>) => {
    const file = e.target.files?.[0];
    if (file) {
      // Validate file type
      if (!file.type.startsWith('image/')) {
        toast.error('Please select an image file');
        return;
      }
      // Validate file size (2MB)
      if (file.size > 2 * 1024 * 1024) {
        toast.error('File size must be less than 2MB');
        return;
      }
      // Create preview
      const reader = new FileReader();
      reader.onload = (e) => {
        setPhotoPreview(e.target?.result as string);
        toast.success('Photo updated successfully!');
      };
      reader.readAsDataURL(file);
    }
  };

  const handleChangePhotoClick = () => {
    fileInputRef.current?.click();
  };

  return (
    <Dialog open onOpenChange={(open) => { if (!open) onClose(); }}>
      <DialogContent 
        className="sm:max-w-[800px] p-0 gap-0 max-h-[90vh] overflow-hidden"
        style={{ zIndex: 1001, maxWidth: '800px', width: '800px' }}
        overlayClassName="!top-16 !left-0 !right-0 !bottom-0 !z-[99]"
        overlayStyle={{ 
          top: '64px', 
          left: 0, 
          right: 0, 
          bottom: 0, 
          zIndex: 99,
          position: 'fixed'
        }}
      >
        <div className="flex flex-col max-h-[90vh]">
          {/* Header */}
          <div className="p-4 flex items-center justify-between flex-shrink-0">
            <DialogTitle className="text-xl font-medium">Edit Profile</DialogTitle>
          </div>

          {/* Content */}
          <div className="p-6 space-y-6 overflow-y-auto flex-1">
          {/* Profile Picture */}
          <div className="flex items-center gap-4">
            <div className="w-20 h-20 rounded-full bg-gradient-to-br from-red-500 to-orange-500 flex items-center justify-center text-white text-2xl overflow-hidden">
              {photoPreview ? (
                <img src={photoPreview} alt="Profile" className="w-full h-full object-cover" />
              ) : (
                name.charAt(0).toUpperCase()
              )}
            </div>
            <div>
              <input
                ref={fileInputRef}
                type="file"
                accept="image/jpeg,image/png,image/gif,image/webp"
                onChange={handlePhotoSelect}
                className="hidden"
              />
              <Button 
                variant="outline" 
                size="sm"
                onClick={handleChangePhotoClick}
              >
                Change Photo
              </Button>
              <p className="text-xs text-muted-foreground mt-1">
                JPG, PNG or GIF. Max size 2MB
              </p>
            </div>
          </div>

          {/* Basic Information */}
          <div className="space-y-4">
            <h3 className="text-sm font-medium">Basic Information</h3>
            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
              <div className="space-y-2">
                <Label htmlFor="edit-name">Full Name *</Label>
                <Input
                  id="edit-name"
                  value={name}
                  onChange={(e) => setName(e.target.value)}
                  placeholder="Enter your full name"
                />
              </div>
              <div className="space-y-2">
                <Label htmlFor="edit-email">Email *</Label>
                <Input
                  id="edit-email"
                  type="email"
                  value={email}
                  onChange={(e) => setEmail(e.target.value)}
                  placeholder="Enter your email"
                />
              </div>
              <div className="space-y-2">
                <Label htmlFor="edit-student-id">Student ID</Label>
                <Input
                  id="edit-student-id"
                  value={studentId}
                  onChange={(e) => setStudentId(e.target.value)}
                  placeholder="Enter your student ID"
                />
              </div>
              <div className="space-y-2">
                <Label htmlFor="edit-department">Department</Label>
                <Input
                  id="edit-department"
                  value={department}
                  onChange={(e) => setDepartment(e.target.value)}
                  placeholder="Enter your department"
                />
              </div>
            </div>
          </div>

          {/* Academic Background */}
          <div className="space-y-4">
            <h3 className="text-sm font-medium">Academic Background</h3>
            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
              <div className="space-y-2">
                <Label htmlFor="edit-year">Year Level</Label>
                <Select value={year} onValueChange={setYear}>
                  <SelectTrigger id="edit-year">
                    <SelectValue />
                  </SelectTrigger>
                  <SelectContent>
                    <SelectItem value="1st Year">1st Year</SelectItem>
                    <SelectItem value="2nd Year">2nd Year</SelectItem>
                    <SelectItem value="3rd Year">3rd Year</SelectItem>
                    <SelectItem value="4th Year">4th Year</SelectItem>
                    <SelectItem value="Graduate">Graduate</SelectItem>
                  </SelectContent>
                </Select>
              </div>
              <div className="space-y-2">
                <Label htmlFor="edit-major">Major</Label>
                <Input
                  id="edit-major"
                  value={major}
                  onChange={(e) => setMajor(e.target.value)}
                  placeholder="Enter your major"
                />
              </div>
            </div>
          </div>

          {/* Bio */}
          <div className="space-y-2">
            <Label htmlFor="edit-bio">Bio</Label>
            <Textarea
              id="edit-bio"
              value={bio}
              onChange={(e) => setBio(e.target.value)}
              placeholder="Tell us about yourself..."
              className="min-h-[100px] resize-none"
            />
            <p className="text-xs text-muted-foreground">
              Brief description for your profile. Max 200 characters.
            </p>
          </div>

          {/* Learning Preferences */}
          <div className="space-y-4">
            <h3 className="text-sm font-medium">Learning Preferences</h3>
            <div className="grid grid-cols-1 md:grid-cols-2 gap-4">
              <div className="space-y-2">
                <Label htmlFor="edit-learning-style">Preferred Learning Style</Label>
                <Select defaultValue="visual">
                  <SelectTrigger id="edit-learning-style">
                    <SelectValue />
                  </SelectTrigger>
                  <SelectContent>
                    <SelectItem value="visual">Visual</SelectItem>
                    <SelectItem value="auditory">Auditory</SelectItem>
                    <SelectItem value="reading">Reading/Writing</SelectItem>
                    <SelectItem value="kinesthetic">Kinesthetic</SelectItem>
                  </SelectContent>
                </Select>
              </div>
              <div className="space-y-2">
                <Label htmlFor="edit-pace">Learning Pace</Label>
                <Select defaultValue="moderate">
                  <SelectTrigger id="edit-pace">
                    <SelectValue />
                  </SelectTrigger>
                  <SelectContent>
                    <SelectItem value="slow">Slow & Steady</SelectItem>
                    <SelectItem value="moderate">Moderate</SelectItem>
                    <SelectItem value="fast">Fast-paced</SelectItem>
                  </SelectContent>
                </Select>
              </div>
            </div>
          </div>

          </div>

          {/* Footer */}
          <div className="border-t border-border p-4 flex justify-end gap-2 flex-shrink-0">
            <Button variant="outline" onClick={onClose}>
              Cancel
            </Button>
            <Button onClick={handleSave}>
              Save Changes
            </Button>
          </div>
        </div>
      </DialogContent>
    </Dialog>
  );
}