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<!DOCTYPE html>
<html lang="fr">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>Assistant de Philosophie (Vue.js)</title>

  <script src="https://unpkg.com/vue@3/dist/vue.global.prod.js"></script>

  <link rel="preconnect" href="https://fonts.googleapis.com">
  <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
  <link href="https://fonts.googleapis.com/css2?family=Kalam&family=Inter:wght@300;400;500;600;700&display=swap" rel="stylesheet">

  <style>
    :root {
      --primary-color: #6366f1; /* Indigo moderne */
      --primary-hover: #5b21b6;
      --secondary-color: #8b5cf6; /* Violet */
      --accent-color: #06b6d4; /* Cyan */
      --text-primary: #0f172a; /* Slate-900 */
      --text-secondary: #475569; /* Slate-600 */
      --text-muted: #94a3b8; /* Slate-400 */
      --background: #ffffff;
      --surface: #f8fafc; /* Slate-50 */
      --border: #e2e8f0; /* Slate-200 */
      --border-focus: #cbd5e1; /* Slate-300 */
      --success: #10b981; /* Emerald-500 */
      --error: #ef4444; /* Red-500 */
    }

    * { box-sizing: border-box; }

    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
      margin: 0; padding: 0; color: var(--text-primary);
      line-height: 1.6; font-weight: 400;
      -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
      min-height: 10vh;
    }
    .container { max-width: 900px; margin: 0 auto; padding: 3rem 2rem; }
    h1 { font-size: 3.5rem; font-weight: 700; text-align: center; background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin: 0 0 1rem 0; letter-spacing: -0.02em; }
    .type-indicator { text-align: center; color: var(--text-muted); font-size: 1.125rem; font-weight: 500; margin-bottom: 3rem; letter-spacing: 0.05em; text-transform: uppercase; }
    .form-container { background: var(--background); border-radius: 20px; padding: 2.5rem; margin-bottom: 2rem; border: 1px solid var(--border); backdrop-filter: blur(10px); }
    .form-group { margin-bottom: 2rem; }
    label { display: block; margin-bottom: 0.75rem; font-weight: 600; color: var(--text-primary); font-size: 0.95rem; letter-spacing: 0.01em; }
    /* Style ajouté pour le champ de fichier */
    textarea, .form-select, .file-input { width: 100%; padding: 1rem 1.25rem; border-radius: 12px; border: 2px solid var(--border); font-size: 1rem; line-height: 1.6; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); background-color: var(--background); color: var(--text-primary); font-family: inherit; -webkit-appearance: none; -moz-appearance: none; appearance: none; box-sizing: border-box; }
    .file-input { cursor: pointer; }
    .file-input:hover { border-color: var(--border-focus); }
    .form-select { background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236366f1' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M6 8l4 4 4-4'/%3e%3c/svg%3e"); background-position: right 1rem center; background-repeat: no-repeat; background-size: 1.25rem 1.25rem; padding-right: 3rem; cursor: pointer; }
    textarea { min-height: 120px; resize: vertical; }
    textarea:focus, .form-select:focus, .file-input:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1); transform: translateY(-1px); }
    .primary-button { display: block; width: 100%; padding: 1.25rem; background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%); color: white; border: none; border-radius: 12px; font-size: 1.1rem; font-weight: 600; cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); letter-spacing: 0.01em; position: relative; overflow: hidden; }
    .primary-button::before { content: ''; position: absolute; top: 0; left: -100%; width: 100%; height: 100%; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent); transition: left 0.5s; }
    .primary-button:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3); }
    .primary-button:hover:not(:disabled)::before { left: 100%; }
    .primary-button:active { transform: translateY(0); }
    .primary-button:disabled { background: var(--text-muted); cursor: not-allowed; transform: none; box-shadow: none; }
    .download-container { margin-top: 2rem; text-align: center; }
    .secondary-button { background: var(--surface); color: var(--text-primary); border: 2px solid var(--border); border-radius: 12px; padding: 1rem 2rem; font-size: 1rem; font-weight: 500; cursor: pointer; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); display: inline-flex; align-items: center; gap: 0.5rem; }
    .secondary-button::before { content: '⬇'; font-size: 1.2rem; }
    .secondary-button:hover:not(:disabled) { background: var(--background); border-color: var(--primary-color); color: var(--primary-color); transform: translateY(-1px); box-shadow: 0 5px 15px rgba(99, 102, 241, 0.15); }
    .loader { width: 60px; height: 60px; margin: 3rem auto; position: relative; }
    .loader::before { content: ''; position: absolute; width: 60px; height: 60px; border-radius: 50%; background: conic-gradient(var(--primary-color), var(--secondary-color), var(--accent-color), var(--primary-color)); animation: spin 1.5s linear infinite; }
    .loader::after { content: ''; position: absolute; top: 8px; left: 8px; width: 44px; height: 44px; border-radius: 50%; background: var(--background); }
    @keyframes spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }
    .error { color: var(--error); background: rgba(239, 68, 68, 0.1); text-align: center; margin-top: 2rem; padding: 1.25rem; border-radius: 12px; font-weight: 500; border: 1px solid rgba(239, 68, 68, 0.2); }
    .dissertation-paper { font-family: 'Kalam', cursive; font-size: 20px; color: #1a2a4c; background-color: #fdfaf4; line-height: 2; background-image: linear-gradient(transparent 97%, #d8e2ee 98%); background-size: 100% 40px; border-left: 3px solid #ffaaab; padding-left: 4em; margin: 2rem 0; padding-top: 30px; padding-bottom: 40px; padding-right: 30px; border-radius: 0 12px 12px 0; -webkit-print-color-adjust: exact; print-color-adjust: exact; }
    .dissertation-paper h2 { font-size: 1.5em; text-align: center; margin-bottom: 1.5em; color: #1a2a4c; }
    .dissertation-paper h3 { font-size: 1.2em; margin-top: 3em; margin-bottom: 1.5em; text-transform: uppercase; text-decoration: underline; color: #1a2a4c; }
    .dissertation-paper .development-block { margin-top: 3em; }
    .dissertation-paper p { text-align: justify; margin: 0; padding: 0; }
    .dissertation-paper .prof { text-align: center; font-style: italic; margin-bottom: 2em; }
    .dissertation-paper .indented { text-indent: 3em; }
    .dissertation-paper .transition { margin-top: 2em; margin-bottom: 2em; font-style: italic; color: #4a6a9c; }
    .dissertation-paper, .dissertation-paper * { box-sizing: border-box; }
    .avoid-page-break { page-break-inside: avoid; break-inside: avoid; }

    /* NOUVEAU STYLE POUR LA PRÉVISUALISATION */
    .image-preview-container {
        margin-top: 1.5rem;
        padding: 1rem;
        border: 1px dashed var(--primary-color);
        border-radius: 12px;
        background-color: var(--surface);
    }
    .image-preview-container label {
        font-size: 0.9rem;
        color: var(--primary-color);
        margin-bottom: 0.5rem;
        font-weight: 500;
    }
    .uploaded-image-preview {
        max-width: 100%;
        height: auto;
        display: block;
        border-radius: 8px;
        box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    }
    /* FIN NOUVEAU STYLE */

    @media (max-width: 768px) { .container { padding: 2rem 1rem; } h1 { font-size: 2.5rem; } .form-container { padding: 1.5rem; } .dissertation-paper { padding-left: 2em; padding-right: 1rem; font-size: 18px; } }
    @keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
    .container > * { animation: fadeInUp 0.6s ease-out; }
  </style>
</head>
<body>
  <div id="app" class="container">
    <h1>Assistant de Dissertation Philosophique</h1>
    <p class="type-indicator">Méthodologie : [[ dissertationTypeLabel ]]</p>

    <div class="form-container">
      <form @submit.prevent="generateDissertation">
        <div class="form-group">
          <label for="dissertation-type">Choisir la méthodologie</label>
          <select id="dissertation-type" v-model="dissertationType" class="form-select">
              <option value="type1">Type 1</option>
              <option value="type2">Type 2 (citation)</option>
              <option value="type3">Type 3 (commentaire de texte)</option>
          </select>
        </div>

        <!-- AFFICHAGE CONDITIONNEL : Champs pour Type 1 et 2 -->
        <div v-if="dissertationType !== 'type3'">
          <div class="form-group">
            <label for="course-context">Choisir un cours comme contexte (optionnel)</label>
            <select id="course-context" v-model="selectedCourse" class="form-select">
              <option value="">-- Aucun cours en contexte --</option>
              <option v-for="course in courses" :key="course.id" :value="course.id">
                [[ course.title ]]
              </option>
            </select>
          </div>
          <div class="form-group">
            <label for="question">Entrez votre sujet de dissertation</label>
            <textarea id="question" v-model="question" placeholder="Entrez votre sujet ou la citation à analyser ici..."></textarea>
          </div>
        </div>

        <!-- AFFICHAGE CONDITIONNEL : Champ pour Type 3 (Upload d'image) -->
        <div v-if="dissertationType === 'type3'" class="form-group">
          <label for="text-image">Téléchargez une image du texte à commenter</label>
          <input type="file" @change="handleFileUpload" id="text-image" accept="image/*" class="file-input">

          <!-- PRÉVISUALISATION DE L'IMAGE AJOUTÉE ICI -->
          <div v-if="uploadedImageUrl" class="image-preview-container">
            <label>Aperçu du texte à commenter :</label>
            <img :src="uploadedImageUrl" alt="Aperçu du texte" class="uploaded-image-preview">
          </div>
        </div>

        <button type="submit" class="primary-button" :disabled="isLoading">
          [[ isLoading ? 'Génération en cours...' : 'Générer' ]]
        </button>
      </form>
    </div>

    <div v-if="dissertation" class="download-container">
      <button class="secondary-button" @click="generatePDF" :disabled="isDownloading">
        [[ isDownloading ? 'Téléchargement...' : 'Télécharger en PDF' ]]
      </button>
    </div>

    <div v-if="isLoading" class="loader"></div>
    <p v-if="errorMessage" class="error">[[ errorMessage ]]</p>

    <div v-if="dissertation" id="dissertation-content" class="dissertation-paper">
      <h2>Sujet : [[ dissertation.sujet ]]</h2>
      <p class="prof">Prof : [[ dissertation.prof ]]</p>
      <h3>Introduction</h3>
      <p class="indented">[[ dissertation.introduction ]]</p>
      <div v-for="partie in dissertation.parties" :key="partie.chapeau" class="avoid-page-break">
        <div class="development-block">
          <p class="indented">[[ partie.chapeau ]]</p>
          <p v-for="(arg, idx) in partie.arguments" :key="idx" class="indented">
            [[ arg.paragraphe_argumentatif ]]
          </p>
        </div>
        <p v-if="partie.transition" class="indented transition">[[ partie.transition ]]</p>
      </div>
      <h3>Conclusion</h3>
      <p class="indented">[[ dissertation.conclusion ]]</p>
    </div>
  </div>

  <script>
    const { createApp } = Vue;

    const app = createApp({
      data() {
        return {
          question: '',
          dissertationType: 'type1',
          courses: [],
          selectedCourse: '',
          uploadedFile: null,
          uploadedImageUrl: null, // <-- NOUVEL état pour l'URL de l'image
          isLoading: false,
          isDownloading: false,
          errorMessage: null,
          dissertation: null
        }
      },
      computed: {
        dissertationTypeLabel() {
            const labels = {
                'type1': 'Type 1',
                'type2': 'Type 2 (Citation)',
                'type3': 'Type 3 (Commentaire de texte)'
            };
            return labels[this.dissertationType] || 'Inconnu';
        }
      },
      watch: {
          // Surveiller le changement de type pour nettoyer la prévisualisation si on quitte le type 3
          dissertationType(newType, oldType) {
              if (oldType === 'type3' && newType !== 'type3') {
                  this.cleanupImage();
              }
          }
      },
      mounted() {
        this.fetchCourses();
      },
      methods: {
        // Nouvelle méthode pour nettoyer la mémoire de l'URL objet
        cleanupImage() {
            if (this.uploadedImageUrl) {
                URL.revokeObjectURL(this.uploadedImageUrl);
                this.uploadedImageUrl = null;
            }
            this.uploadedFile = null;
        },
        // MÉTHODE MISE À JOUR pour gérer la sélection du fichier et l'aperçu
        handleFileUpload(event) {
            this.cleanupImage(); // Nettoie l'ancienne image/URL
            
            const file = event.target.files[0];
            this.uploadedFile = file;
            this.errorMessage = null;

            if (file) {
                // Crée une URL locale pour l'aperçu de l'image
                this.uploadedImageUrl = URL.createObjectURL(file);
            }
        },
        async fetchCourses() {
          try {
            const response = await fetch('/api/philosophy/courses');
            if (!response.ok) throw new Error('Impossible de charger les cours.');
            this.courses = await response.json();
          } catch (error) {
            this.errorMessage = error.message;
          }
        },
        async generateDissertation() {
          this.isLoading = true;
          this.errorMessage = null;
          this.dissertation = null;

          try {
            let response;
            // CAS 1 : C'est un upload d'image (Type 3)
            if (this.dissertationType === 'type3') {
              if (!this.uploadedFile) {
                throw new Error("Veuillez sélectionner une image pour le commentaire de texte.");
              }
              const formData = new FormData();
              formData.append('image', this.uploadedFile);
              formData.append('type', this.dissertationType);
              
              response = await fetch('/api/generate_dissertation', {
                method: 'POST',
                body: formData, // Le navigateur gère le Content-Type pour FormData
              });

            // CAS 2 : C'est une soumission de texte (Type 1 ou 2)
            } else {
              if (!this.question.trim()) {
                throw new Error("Veuillez entrer un sujet de dissertation.");
              }
              response = await fetch('/api/generate_dissertation', {
                method: 'POST',
                headers: { 'Content-Type': 'application/json' },
                body: JSON.stringify({ 
                  question: this.question,
                  type: this.dissertationType,
                  courseId: this.selectedCourse
                })
              });
            }

            // Le traitement de la réponse est commun aux deux cas
            const data = await response.json();
            if (!response.ok) {
              throw new Error(data.error || "Une erreur inconnue est survenue.");
            }
            this.dissertation = data;

          } catch (error) {
            this.errorMessage = error.message;
          } finally {
            this.isLoading = false;
            // Optionnel : Nettoyer l'image après la soumission réussie
            if (this.dissertationType === 'type3') {
                // Note: Laisser la prévisualisation peut être utile si l'utilisateur veut resoumettre rapidement
                // Si on veut nettoyer l'input file: event.target.value = null; (difficile ici car l'event n'est plus là)
                // Pour cet exemple, nous allons laisser la prévisualisation visible jusqu'à la prochaine action.
            }
          }
        },
        async generatePDF() {
          if (!this.dissertation) return;
          this.isDownloading = true;
          this.errorMessage = null;
          try {
            const response = await fetch('/api/generate_pdf', {
              method: 'POST',
              headers: { 'Content-Type': 'application/json' },
              body: JSON.stringify(this.dissertation),
            });
            if (!response.ok) {
                const errorData = await response.json();
                throw new Error(errorData.error || "Erreur serveur lors de la création du PDF.");
            }
            const blob = await response.blob();
            const url = window.URL.createObjectURL(blob);
            const a = document.createElement('a');
            a.href = url;
            a.download = 'dissertation-philosophie.pdf';
            document.body.appendChild(a);
            a.click();
            window.URL.revokeObjectURL(url);
            a.remove();
          } catch (err) {
            this.errorMessage = "Erreur lors de la génération du PDF : " + err.message;
          } finally {
            this.isDownloading = false;
          }
        }
      }
    });

    app.config.compilerOptions.delimiters = ['[[', ']]'];
    app.mount('#app');
  </script>
</body>
</html>