// Variables globales
let monsters = [];
let quests = [];
let announcements = [];

// Éléments DOM pour les onglets
const announcementsTab = document.getElementById('announcementsTab');
const monstersTab = document.getElementById('monstersTab');
const maintenanceTab = document.getElementById('maintenanceTab');
const sectionsEls = document.querySelectorAll('.admin-section');

// Éléments DOM pour les annonces
const announcementsListEl = document.getElementById('announcementsList');
const emptyAnnouncementsMessageEl = document.getElementById('emptyAnnouncementsMessage');
const addAnnouncementBtn = document.getElementById('addAnnouncementBtn');
const announcementForm = document.getElementById('announcementForm');
const announcementIdEl = document.getElementById('announcementId');
const announcementTextEl = document.getElementById('announcementText');
const announcementActiveEl = document.getElementById('announcementActive');
const announcementModalTitleEl = document.getElementById('announcementModalTitle');

// Éléments DOM pour les monstres
const monstersListEl = document.getElementById('monstersList');
const emptyMonstersMessageEl = document.getElementById('emptyMonstersMessage');
const addMonsterBtn = document.getElementById('addMonsterBtn');
const monsterForm = document.getElementById('monsterForm');
const monsterIdEl = document.getElementById('monsterId');
const monsterNameEl = document.getElementById('monsterName');
const monsterImageEl = document.getElementById('monsterImage');
const monsterModalTitleEl = document.getElementById('monsterModalTitle');

// Éléments DOM pour la maintenance
const cleanOldQuestsBtn = document.getElementById('cleanOldQuestsBtn');
const cleanResultEl = document.getElementById('cleanResult');
const totalMonstersCountEl = document.getElementById('totalMonstersCount');
const totalQuestsCountEl = document.getElementById('totalQuestsCount');
const smallCrownQuestsCountEl = document.getElementById('smallCrownQuestsCount');
const largeCrownQuestsCountEl = document.getElementById('largeCrownQuestsCount');

// Éléments DOM pour la confirmation de suppression
const confirmDeleteBtn = document.getElementById('confirmDeleteBtn');
const confirmDeleteMessageEl = document.getElementById('confirmDeleteMessage');
const confirmDeleteTitleEl = document.getElementById('confirmDeleteTitle');

// Modales Bootstrap
const announcementModal = new bootstrap.Modal(document.getElementById('announcementModal'));
const monsterModal = new bootstrap.Modal(document.getElementById('monsterModal'));
const confirmDeleteModal = new bootstrap.Modal(document.getElementById('confirmDeleteModal'));

// Variables pour la suppression
let currentDeletionType = null;
let currentDeletionId = null;

// Vérifier l'authentification et rediriger si nécessaire
function checkAuthentication() {
    if (localStorage.getItem('admin_authenticated') !== 'true') {
        window.location.href = 'login.html';
        return false;
    }
    return true;
}

// Déconnexion
function logout() {
    localStorage.removeItem('admin_authenticated');
    window.location.href = 'login.html?logout=true';
}

// Initialisation
document.addEventListener('DOMContentLoaded', () => {
    // Vérifier l'authentification
    if (!checkAuthentication()) {
        return;
    }
    
    loadData();
    
    // Événements pour les onglets
    announcementsTab.addEventListener('click', (e) => {
        e.preventDefault();
        showSection('announcementsSection');
    });
    
    monstersTab.addEventListener('click', (e) => {
        e.preventDefault();
        showSection('monstersSection');
    });
    
    maintenanceTab.addEventListener('click', (e) => {
        e.preventDefault();
        showSection('maintenanceSection');
        updateStatistics();
    });
    
    // Événements pour les annonces
    addAnnouncementBtn.addEventListener('click', () => {
        resetAnnouncementForm();
        announcementModalTitleEl.textContent = 'Ajouter une annonce';
        announcementModal.show();
    });
    
    announcementForm.addEventListener('submit', handleSaveAnnouncement);
    
    // Événements pour les monstres
    addMonsterBtn.addEventListener('click', () => {
        resetMonsterForm();
        monsterModalTitleEl.textContent = 'Ajouter un monstre';
        monsterModal.show();
    });
    
    monsterForm.addEventListener('submit', handleSaveMonster);
    
    // Événements pour la maintenance
    cleanOldQuestsBtn.addEventListener('click', handleCleanOldQuests);
    
    // Événement pour la confirmation de suppression
    confirmDeleteBtn.addEventListener('click', handleConfirmDelete);
    
    // Événement pour la déconnexion
    document.getElementById('logoutBtn').addEventListener('click', logout);
});

// Fonctions de chargement et sauvegarde des données
function loadData() {
    // Dans une implémentation réelle, ces données seraient chargées depuis des fichiers JSON ou une API
    // Pour l'instant, nous utilisons des données temporaires
    
    monsters = [
        { id: 1, name: 'Chatacabra', image: 'img/Chatacabra.jpg' },
        { id: 2, name: 'Quematrice', image: 'img/Quematrice.jpg' },
        { id: 3, name: 'Lala Barina', image: 'img/Lala_Barina.jpg' },
        { id: 4, name: 'Congalala', image: 'img/Congalala.jpg' },
        { id: 5, name: 'Balahara', image: 'img/Balahara.jpg' },
        { id: 6, name: 'Doshaguma', image: 'img/Doshaguma.jpg' },
        { id: 7, name: 'Uth Duna', image: 'img/Uth_Duna.jpg' },
        { id: 8, name: 'Rompopolo', image: 'img/Rompopolo.jpg' },
        { id: 9, name: 'Rey Dau', image: 'img/Rey_Dau.jpg' },
        { id: 10, name: 'Nerscylla', image: 'img/Nerscylla.jpg' },
        { id: 11, name: 'Hirabami', image: 'img/Hirabami.jpg' },
        { id: 12, name: 'Ajarakan', image: 'img/Ajarakan.jpg' },
        { id: 13, name: 'Nu Udra', image: 'img/Nu_Udra.jpg' },
        { id: 14, name: 'Doshaguma Gardien', image: 'img/Doshaguma_Gardien.jpg' },
        { id: 15, name: 'Rathalos Gardien', image: 'img/Rathalos_Gardien.jpg' },
        { id: 16, name: 'Jin Dahaad', image: 'img/Jin_Dahaad.jpg' },
        { id: 17, name: 'Odogaron Désastre Gardien', image: 'img/Odogaron_Desastre_Gardien.jpg' },
        { id: 18, name: 'Xu Wu', image: 'img/Xu_Wu.jpg' },
        { id: 19, name: 'Arkveld Gardien', image: 'img/Arkveld_Gardien.jpg' },
        { id: 20, name: 'Zoh Shia', image: 'img/Zoh_Shia.jpg' },
        { id: 21, name: 'Yian Kut-Ku', image: 'img/Yian_Kut-Ku.jpg' },
        { id: 22, name: 'Gypceros', image: 'img/Gypceros.jpg' },
        { id: 23, name: 'Rathian', image: 'img/Rathian.jpg' },
        { id: 24, name: 'Anjanath Tonnerre Gardien', image: 'img/Anjanath_Tonnerre_Gardien.jpg' },
        { id: 25, name: 'Rathalos', image: 'img/Rathalos.jpg' },
        { id: 26, name: 'Gravios', image: 'img/Gravios.jpg' },
        { id: 27, name: 'Blangonga', image: 'img/Blangonga.jpg' },
        { id: 28, name: 'Gore Malaga', image: 'img/Gore_Malaga.jpg' },
        { id: 29, name: 'Arkveld', image: 'img/Arkveld.jpg' }
    ];
    
    quests = [
        { id: 1, monsterId: 1, crownType: 'small', playerName: 'Hunter123', playerId: 'MHW-1234', date: new Date().toISOString() },
        { id: 2, monsterId: 1, crownType: 'large', playerName: 'DragonSlayer', playerId: 'MHW-5678', date: new Date().toISOString() },
        { id: 3, monsterId: 2, crownType: 'small', playerName: 'ThunderLord', playerId: 'MHW-9012', date: new Date().toISOString() }
    ];
    
    announcements = [
        { id: 1, text: "Bienvenue sur le site de partage de quêtes à couronnes pour Monster Hunter Wilds!", active: true },
        { id: 2, text: "De nouveaux monstres ont été ajoutés, consultez la liste!", active: false }
    ];
    
    // Essayer de charger depuis localStorage s'il y a des données
    const storedMonsters = localStorage.getItem('mhw_monsters');
    const storedQuests = localStorage.getItem('mhw_quests');
    const storedAnnouncements = localStorage.getItem('mhw_announcements');
    
    if (storedMonsters) monsters = JSON.parse(storedMonsters);
    if (storedQuests) quests = JSON.parse(storedQuests);
    if (storedAnnouncements) announcements = JSON.parse(storedAnnouncements);
    
    renderAnnouncementsList();
    renderMonstersList();
}

function saveData() {
    // Dans une implémentation réelle, ces données seraient sauvegardées via une API
    localStorage.setItem('mhw_monsters', JSON.stringify(monsters));
    localStorage.setItem('mhw_quests', JSON.stringify(quests));
    localStorage.setItem('mhw_announcements', JSON.stringify(announcements));
    console.log('Données sauvegardées');
}

// Fonctions pour la navigation entre les sections
function showSection(sectionId) {
    // Désactiver tous les onglets et masquer toutes les sections
    document.querySelectorAll('.list-group-item').forEach(tab => {
        tab.classList.remove('active');
    });
    
    sectionsEls.forEach(section => {
        section.classList.add('d-none');
    });
    
    // Activer l'onglet sélectionné et afficher sa section
    document.getElementById(sectionId).classList.remove('d-none');
    
    if (sectionId === 'announcementsSection') {
        announcementsTab.classList.add('active');
    } else if (sectionId === 'monstersSection') {
        monstersTab.classList.add('active');
    } else if (sectionId === 'maintenanceSection') {
        maintenanceTab.classList.add('active');
    }
}

// ============ ANNONCES ============

// Rendu de la liste des annonces
function renderAnnouncementsList() {
    if (announcements.length === 0) {
        announcementsListEl.innerHTML = '';
        emptyAnnouncementsMessageEl.classList.remove('d-none');
        return;
    }
    
    emptyAnnouncementsMessageEl.classList.add('d-none');
    
    announcementsListEl.innerHTML = announcements.map(announcement => {
        const statusBadge = announcement.active 
            ? '<span class="badge bg-success">Active</span>' 
            : '<span class="badge bg-secondary">Inactive</span>';
        
        return `
            <tr>
                <td>${announcement.text}</td>
                <td>${statusBadge}</td>
                <td>
                    <div class="btn-group btn-group-sm">
                        <button class="btn btn-outline-primary edit-announcement-btn" data-id="${announcement.id}">
                            Éditer
                        </button>
                        <button class="btn btn-outline-danger delete-announcement-btn" data-id="${announcement.id}">
                            Supprimer
                        </button>
                    </div>
                </td>
            </tr>
        `;
    }).join('');
    
    // Ajouter les écouteurs d'événements pour les boutons
    document.querySelectorAll('.edit-announcement-btn').forEach(btn => {
        btn.addEventListener('click', () => {
            const announcementId = parseInt(btn.dataset.id);
            editAnnouncement(announcementId);
        });
    });
    
    document.querySelectorAll('.delete-announcement-btn').forEach(btn => {
        btn.addEventListener('click', () => {
            const announcementId = parseInt(btn.dataset.id);
            showDeleteConfirmation('announcement', announcementId);
        });
    });
}

// Réinitialiser le formulaire d'annonce
function resetAnnouncementForm() {
    announcementIdEl.value = '';
    announcementTextEl.value = '';
    announcementActiveEl.checked = true;
}

// Éditer une annonce
function editAnnouncement(announcementId) {
    const announcement = announcements.find(a => a.id === announcementId);
    
    if (!announcement) return;
    
    announcementIdEl.value = announcement.id;
    announcementTextEl.value = announcement.text;
    announcementActiveEl.checked = announcement.active;
    
    announcementModalTitleEl.textContent = 'Modifier l\'annonce';
    announcementModal.show();
}

// Gérer la sauvegarde d'une annonce
function handleSaveAnnouncement(e) {
    e.preventDefault();
    
    const announcementId = announcementIdEl.value.trim();
    const announcementText = announcementTextEl.value.trim();
    const announcementActive = announcementActiveEl.checked;
    
    if (!announcementText) {
        alert('Veuillez saisir le texte de l\'annonce');
        return;
    }
    
    if (announcementId) {
        // Mode édition
        const index = announcements.findIndex(a => a.id === parseInt(announcementId));
        
        if (index !== -1) {
            announcements[index].text = announcementText;
            announcements[index].active = announcementActive;
        }
    } else {
        // Mode ajout
        const newAnnouncementId = announcements.length > 0 
            ? Math.max(...announcements.map(a => a.id)) + 1 
            : 1;
        
        announcements.push({
            id: newAnnouncementId,
            text: announcementText,
            active: announcementActive
        });
    }
    
    saveData();
    renderAnnouncementsList();
    announcementModal.hide();
}

// ============ MONSTRES ============

// Rendu de la liste des monstres
function renderMonstersList() {
    if (monsters.length === 0) {
        monstersListEl.innerHTML = '';
        emptyMonstersMessageEl.classList.remove('d-none');
        return;
    }
    
    emptyMonstersMessageEl.classList.add('d-none');
    
    monstersListEl.innerHTML = monsters.map(monster => {
        const questCount = quests.filter(q => q.monsterId === monster.id).length;
        
        return `
            <tr>
                <td>
                    <img src="${monster.image}" alt="${monster.name}" class="img-thumbnail" width="80">
                </td>
                <td>${monster.name}</td>
                <td>${questCount}</td>
                <td>
                    <div class="btn-group btn-group-sm">
                        <button class="btn btn-outline-primary edit-monster-btn" data-id="${monster.id}">
                            Éditer
                        </button>
                        <button class="btn btn-outline-danger delete-monster-btn" data-id="${monster.id}">
                            Supprimer
                        </button>
                    </div>
                </td>
            </tr>
        `;
    }).join('');
    
    // Ajouter les écouteurs d'événements pour les boutons
    document.querySelectorAll('.edit-monster-btn').forEach(btn => {
        btn.addEventListener('click', () => {
            const monsterId = parseInt(btn.dataset.id);
            editMonster(monsterId);
        });
    });
    
    document.querySelectorAll('.delete-monster-btn').forEach(btn => {
        btn.addEventListener('click', () => {
            const monsterId = parseInt(btn.dataset.id);
            showDeleteConfirmation('monster', monsterId);
        });
    });
}

// Réinitialiser le formulaire de monstre
function resetMonsterForm() {
    monsterIdEl.value = '';
    monsterNameEl.value = '';
    monsterImageEl.value = '';
}

// Éditer un monstre
function editMonster(monsterId) {
    const monster = monsters.find(m => m.id === monsterId);
    
    if (!monster) return;
    
    monsterIdEl.value = monster.id;
    monsterNameEl.value = monster.name;
    
    // Retirer le préfixe 'img/' pour l'affichage dans le formulaire
    let imagePath = monster.image;
    if (imagePath.startsWith('img/')) {
        imagePath = imagePath.substring(4);
    }
    monsterImageEl.value = imagePath;
    
    monsterModalTitleEl.textContent = 'Modifier le monstre';
    monsterModal.show();
}

// Gérer la sauvegarde d'un monstre
function handleSaveMonster(e) {
    e.preventDefault();
    
    const monsterId = monsterIdEl.value.trim();
    const monsterName = monsterNameEl.value.trim();
    let monsterImage = monsterImageEl.value.trim();
    
    // Ajouter le préfixe 'img/' si ce n'est pas déjà fait
    if (!monsterImage.startsWith('img/')) {
        monsterImage = 'img/' + monsterImage;
    }
    
    if (!monsterName || !monsterImage) {
        alert('Veuillez remplir tous les champs');
        return;
    }
    
    if (monsterId) {
        // Mode édition
        const index = monsters.findIndex(m => m.id === parseInt(monsterId));
        
        if (index !== -1) {
            monsters[index].name = monsterName;
            monsters[index].image = monsterImage;
        }
    } else {
        // Mode ajout
        const newMonsterId = monsters.length > 0 
            ? Math.max(...monsters.map(m => m.id)) + 1 
            : 1;
        
        monsters.push({
            id: newMonsterId,
            name: monsterName,
            image: monsterImage
        });
    }
    
    saveData();
    renderMonstersList();
    monsterModal.hide();
}

// ============ MAINTENANCE ============

// Mettre à jour les statistiques
function updateStatistics() {
    totalMonstersCountEl.textContent = monsters.length;
    totalQuestsCountEl.textContent = quests.length;
    smallCrownQuestsCountEl.textContent = quests.filter(q => q.crownType === 'small').length;
    largeCrownQuestsCountEl.textContent = quests.filter(q => q.crownType === 'large').length;
}

// Nettoyer les quêtes anciennes
function handleCleanOldQuests() {
    const sevenDaysAgo = new Date();
    sevenDaysAgo.setDate(sevenDaysAgo.getDate() - 7);
    
    const oldQuestsCount = quests.filter(q => new Date(q.date) < sevenDaysAgo).length;
    
    quests = quests.filter(q => new Date(q.date) >= sevenDaysAgo);
    
    saveData();
    updateStatistics();
    
    cleanResultEl.innerHTML = `${oldQuestsCount} quête(s) supprimée(s) avec succès.`;
    cleanResultEl.classList.remove('d-none');
    
    // Masquer le message après 3 secondes
    setTimeout(() => {
        cleanResultEl.classList.add('d-none');
    }, 3000);
}

// ============ SUPPRESSION ============

// Afficher la confirmation de suppression
function showDeleteConfirmation(type, id) {
    currentDeletionType = type;
    currentDeletionId = id;
    
    if (type === 'announcement') {
        confirmDeleteTitleEl.textContent = 'Supprimer l\'annonce';
        confirmDeleteMessageEl.textContent = 'Êtes-vous sûr de vouloir supprimer cette annonce ?';
    } else if (type === 'monster') {
        const questCount = quests.filter(q => q.monsterId === id).length;
        
        confirmDeleteTitleEl.textContent = 'Supprimer le monstre';
        confirmDeleteMessageEl.textContent = `Êtes-vous sûr de vouloir supprimer ce monstre ? Cette action supprimera également ${questCount} quête(s) associée(s).`;
    }
    
    confirmDeleteModal.show();
}

// Gérer la confirmation de suppression
function handleConfirmDelete() {
    if (currentDeletionType === 'announcement') {
        announcements = announcements.filter(a => a.id !== currentDeletionId);
        renderAnnouncementsList();
    } else if (currentDeletionType === 'monster') {
        monsters = monsters.filter(m => m.id !== currentDeletionId);
        quests = quests.filter(q => q.monsterId !== currentDeletionId);
        renderMonstersList();
    }
    
    saveData();
    confirmDeleteModal.hide();
    
    currentDeletionType = null;
    currentDeletionId = null;
}