// OpenAI Codex integration for code generation
document.addEventListener('DOMContentLoaded', () => {
  const chatForm = document.getElementById('chat-form');
  const chatInput = document.getElementById('chat-input');
  const chatLog = document.getElementById('chat-log');

  const newTaskBtn = document.getElementById('newTaskBtn');
  const projectList = document.getElementById('projectList');

  const codePreview = document.getElementById('code-preview');
  const codeHistory = document.getElementById('code-history');
  const copyCodeBtn = document.getElementById('copy-code');
  const downloadCodeBtn = document.getElementById('download-code');
  const modelSelect = document.getElementById('model-select');
  const highReasoningCheckbox = document.getElementById('high-reasoning');
  const includeCommentsCheckbox = document.getElementById('include-comments');
  const charCount = document.getElementById('char-count');

  const themeToggle = document.getElementById('themeToggle');
// Theme: respect system, allow toggle
  const prefersDark = window.matchMedia('(prefers-color-scheme: dark)');
  function applyTheme() {
    document.documentElement.classList.toggle('dark', prefersDark.matches);
    localStorage.setItem('rosalinda.theme', prefersDark.matches ? 'dark' : 'light');
  }
  // Load saved theme or default to system
  const savedTheme = localStorage.getItem('rosalinda.theme');
  if (savedTheme) {
    document.documentElement.classList.toggle('dark', savedTheme === 'dark');
  } else {
    applyTheme();
  }
  prefersDark.addEventListener('change', applyTheme);
  themeToggle?.addEventListener('click', () => {
    document.documentElement.classList.toggle('dark');
    const isDark = document.documentElement.classList.contains('dark');
    localStorage.setItem('rosalinda.theme', isDark ? 'dark' : 'light');
  });

  // Chat handling
  function appendMessage({ role, text }) {
    const wrapper = document.createElement('div');
    wrapper.className = `message ${role} flex items-start gap-3`;

    if (role === 'user') {
      wrapper.classList.add('justify-end');
      wrapper.innerHTML = `
        <div class="bubble max-w-[80%] rounded-xl bg-slate-100 px-4 py-2 text-sm dark:bg-slate-700">
          ${escapeHtml(text)}
        </div>
        <div class="avatar flex h-8 w-8 flex-none items-center justify-center rounded-full bg-secondary/10 text-secondary">
          <svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" viewBox="0 0 20 20" fill="currentColor">
            <path fill-rule="evenodd" d="M10 9a3 3 0 100-6 3 3 0 000 6zm-7 9a7 7 0 1114 0H3z" clip-rule="evenodd"/>
          </svg>
        </div>
      `;
    } else {
      wrapper.innerHTML = `
        <div class="avatar flex h-8 w-8 flex-none items-center justify-center rounded-full bg-primary/10 text-primary">
          <svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" viewBox="0 0 20 20" fill="currentColor">
            <path d="M2 5a2 2 0 012-2h7a2 2 0 012 2v4a2 2 0 01-2 2H9l-3 3v-3H4a2 2 0 01-2-2V5z" />
          </svg>
        </div>
        <div class="rounded-xl bg-slate-100 px-4 py-2 text-sm text-slate-800 dark:bg-slate-700 dark:text-slate-100">
          ${escapeHtml(text)}
        </div>
      `;
    }
    chatLog.appendChild(wrapper);
    chatLog.scrollTop = chatLog.scrollHeight;
  }

  function escapeHtml(str) {
    return str
      .replaceAll('&', '&amp;')
      .replaceAll('<', '&lt;')
      .replaceAll('>', '&gt;')
      .replaceAll('"', '&quot;')
      .replaceAll("'", '&#39;');
  }
  chatForm?.addEventListener('submit', async (e) => {
    e.preventDefault();
    const value = chatInput.value.trim();
    if (!value) return;
    
    appendMessage({ role: 'user', text: value });
    chatInput.value = '';
    updateCharCount();
    
    // Show typing indicator
    const typingIndicator = appendTypingIndicator();
    
    try {
      // Generate code using OpenAI Codex
      const code = await generateCode(value);
      typingIndicator.remove();
      appendMessage({ role: 'bot', text: "Voici le code généré :", code });
      updateCodePreview(code);
      addToHistory(value, code);
    } catch (error) {
      typingIndicator.remove();
      appendMessage({ role: 'bot', text: `Erreur: ${error.message}` });
    }
  });

  // Generate code using OpenAI Codex
  async function generateCode(prompt) {
    const model = modelSelect.value;
    const includeComments = includeCommentsCheckbox.checked;
    const highReasoning = highReasoningCheckbox.checked;
    
    // Enhanced prompt for better code generation
    let enhancedPrompt = prompt;
    if (includeComments) {
      enhancedPrompt += "\n\nInclus des commentaires détaillés en français pour expliquer le code.";
    }
    
    const requestBody = {
      model: model,
      input: enhancedPrompt,
      max_tokens: 2000,
      temperature: 0.7,
    };
    
    if (highReasoning && model.includes('codex')) {
      requestBody.reasoning = { effort: "high" };
    }
    
    try {
      const response = await fetch('/api/generate-code', {
        method: 'POST',
        headers: {
          'Content-Type': 'application/json',
        },
        body: JSON.stringify(requestBody)
      });
      
      if (!response.ok) {
        throw new Error(`HTTP ${response.status}: ${response.statusText}`);
      }
      
      const data = await response.json();
      return data.output_text || data.choices[0].text || "Aucune réponse reçue.";
      
    } catch (error) {
      // Fallback to local simulation if API is not available
      console.log('API not available, using fallback:', error.message);
      return generateFallbackCode(prompt);
    }
  }

  // Fallback code generation when API is not available
  function generateFallbackCode(prompt) {
    const lc = prompt.toLowerCase();
    
    if (lc.includes('function') || lc.includes('fonction')) {
      return `// Fonction générée
function exemple() {
    console.log("Hello World!");
    return "Résultat";
}

// Utilisation
const resultat = exemple();
console.log(resultat);`;
    }
    
    if (lc.includes('react') || lc.includes('composant')) {
      return `// Composant React
import React, { useState } from 'react';

const MonComposant = () => {
    const [count, setCount] = useState(0);
    
    return (
        <div className="p-4">
            <h1>Compteur: {count}</h1>
            <button 
                onClick={() => setCount(count + 1)}
                className="px-4 py-2 bg-blue-500 text-white rounded"
            >
                Increment
            </button>
        </div>
    );
};

export default MonComposant;`;
    }
    
    if (lc.includes('sql') || lc.includes('base de données')) {
      return `-- Requête SQL générée
SELECT 
    id,
    nom,
    email,
    date_creation
FROM utilisateurs 
WHERE date_creation >= '2024-01-01'
ORDER BY date_creation DESC
LIMIT 100;`;
    }
    
    if (lc.includes('api') || lc.includes('express')) {
      return `// API Express.js
const express = require('express');
const app = express();

app.use(express.json());

// Route GET
app.get('/api/users', (req, res) => {
    res.json([
        { id: 1, nom: 'Jean', email: 'jean@example.com' },
        { id: 2, nom: 'Marie', email: 'marie@example.com' }
    ]);
});

// Route POST
app.post('/api/users', (req, res) => {
    const user = {
        id: Date.now(),
        ...req.body
    };
    res.status(201).json(user);
});

app.listen(3000, () => {
    console.log('Serveur démarré sur le port 3000');
});`;
    }
    
    if (lc.includes('css') || lc.includes('style')) {
      return `/* Styles CSS générés */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 1rem;
}

.button {
    background: #3b82f6;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
}

.button:hover {
    background: #2563eb;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
}`;
    }
    
    // Default generic code
    return `// Code généré pour: ${prompt}

// Exemple d'implémentation
function genererCode() {
    console.log("Code généré avec succès!");
    
    // Votre logique ici
    const donnees = [
        { id: 1, nom: "Exemple 1" },
        { id: 2, nom: "Exemple 2" }
    ];
    
    // Traitement des données
    donnees.forEach(item => {
        console.log(\`ID: \${item.id}, Nom: \${item.nom}\`);
    });
    
    return donnees;
}

// Exécution
genererCode();`;
  }

  // Append typing indicator
  function appendTypingIndicator() {
    const wrapper = document.createElement('div');
    wrapper.className = 'message bot flex items-start gap-3';
    wrapper.innerHTML = `
      <div class="flex h-8 w-8 flex-none items-center justify-center rounded-full bg-primary/10 text-primary">
        <svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4 animate-spin" viewBox="0 0 20 20" fill="currentColor">
          <path fill-rule="evenodd" d="M4 2a1 1 0 011 1v2.101a7.002 7.002 0 0111.601 2.566 1 1 0 11-1.885.666A5.002 5.002 0 005.999 7H9a1 1 0 010 2H4a1 1 0 01-1-1V3a1 1 0 011-1zm.008 9.057a1 1 0 011.276.61A5.002 5.002 0 0014.001 13H11a1 1 0 110-2h5a1 1 0 011 1v5a1 1 0 11-2 0v-2.101a7.002 7.002 0 01-11.601-2.566 1 1 0 01.61-1.276z" clip-rule="evenodd" />
        </svg>
      </div>
      <div class="rounded-xl bg-slate-100 px-4 py-2 text-sm text-slate-800 dark:bg-slate-700 dark:text-slate-100">
        Génération du code en cours...
      </div>
    `;
    chatLog.appendChild(wrapper);
    chatLog.scrollTop = chatLog.scrollHeight;
    return wrapper;
  }

  // Update code preview
  function updateCodePreview(code) {
    codePreview.innerHTML = `<code class="language-javascript">${escapeHtml(code)}</code>`;
  }

  // Add to history
  function addToHistory(prompt, code) {
    if (codeHistory.querySelector('.text-center')) {
      codeHistory.innerHTML = '';
    }
    
    const historyItem = document.createElement('div');
    historyItem.className = 'text-xs p-2 rounded border border-slate-200 dark:border-slate-600 cursor-pointer hover:bg-slate-50 dark:hover:bg-slate-700';
    historyItem.innerHTML = `
      <div class="font-medium text-slate-700 dark:text-slate-300 truncate">${escapeHtml(prompt)}</div>
      <div class="text-slate-500 dark:text-slate-400 mt-1 text-xs">${escapeHtml(code.substring(0, 50))}...</div>
    `;
    
    historyItem.addEventListener('click', () => {
      updateCodePreview(code);
      chatInput.value = prompt;
      updateCharCount();
    });
    
    codeHistory.insertBefore(historyItem, codeHistory.firstChild);
  }

  // Copy code to clipboard
  copyCodeBtn?.addEventListener('click', async () => {
    const code = codePreview.textContent;
    try {
      await navigator.clipboard.writeText(code);
      copyCodeBtn.textContent = 'Copié!';
      setTimeout(() => {
        copyCodeBtn.textContent = 'Copier';
      }, 2000);
    } catch (error) {
      console.error('Erreur lors de la copie:', error);
    }
  });

  // Download code as file
  downloadCodeBtn?.addEventListener('click', () => {
    const code = codePreview.textContent;
    const blob = new Blob([code], { type: 'text/plain' });
    const url = URL.createObjectURL(blob);
    const a = document.createElement('a');
    a.href = url;
    a.download = `code-${Date.now()}.txt`;
    a.click();
    URL.revokeObjectURL(url);
  });

  // Code template buttons
  document.querySelectorAll('.code-template').forEach(btn => {
    btn.addEventListener('click', () => {
      const prompt = btn.dataset.prompt;
      chatInput.value = prompt;
      updateCharCount();
      chatInput.focus();
    });
  });

  // Character counter
  function updateCharCount() {
    const count = chatInput.value.length;
    charCount.textContent = `${count} caractères`;
  }

  chatInput?.addEventListener('input', updateCharCount);

  // Initialize character count
  updateCharCount();

  // "Nouvelle tâche" quick prompts
  newTaskBtn?.addEventListener('click', () => {
    const samples = [
      "Crée une fonction JavaScript pour trier un tableau d'objets par date",
      "Génère un composant React avec useState pour un formulaire de contact",
      "Crée une API REST Express avec authentification JWT",
      "Génère du CSS pour une carte responsive avec animations",
      "Crée une requête SQL pour récupérer les ventes par mois"
    ];
    const pick = samples[Math.floor(Math.random() * samples.length)];
    chatInput.value = pick;
    updateCharCount();
    chatInput.focus();
  });

  // Seed a couple of example "projects"
  const demoProjects = [
    { name: "API Utilisateurs", status: "Terminé", type: "API" },
    { name: "Composant React", status: "En cours", type: "Frontend" },
    { name: "Base de données", status: "Brouillon", type: "SQL" },
  ];
  function renderProjects() {
    if (!projectList) return;
    projectList.innerHTML = "";
    const list = document.createElement('div');
    list.className = "space-y-2";
    demoProjects.forEach(p => {
      const row = document.createElement('div');
      row.className = "flex items-center justify-between rounded-lg border border-slate-200 p-3 text-sm dark:border-slate-700";
      row.innerHTML = `
        <div class="flex items-center gap-3">
          <span class="inline-flex h-2.5 w-2.5 rounded-full bg-secondary"></span>
          <div>
            <div class="font-medium">${escapeHtml(p.name)}</div>
            <div class="text-xs text-slate-500 dark:text-slate-400">${escapeHtml(p.type)} • ${escapeHtml(p.status)}</div>
          </div>
        </div>
        <button class="rounded-md border border-slate-200 bg-white px-2 py-1 text-xs hover:bg-slate-50 dark:border-slate-700 dark:bg-slate-800 dark:hover:bg-slate-700">Ouvrir</button>
      `;
      list.appendChild(row);
    });
    projectList.appendChild(list);
  }
  renderProjects();
});