const API_URL = 'http://localhost:3000';
let authToken = localStorage.getItem('admin_token');

document.addEventListener('DOMContentLoaded', () => {
    checkAuth();
    if (authToken) {
        loadApps();
    }
});

function checkAuth() {
    const loginSection = document.getElementById('login-section');
    const adminSection = document.getElementById('admin-section');
    const userStatus = document.getElementById('user-status');

    if (authToken) {
        loginSection.classList.add('hidden');
        adminSection.classList.remove('hidden');
        userStatus.classList.remove('hidden');
        userStatus.innerHTML = '<i class="fas fa-user-shield mr-2"></i>Admin';
    }
}

async function login() {
    const tokenInput = document.getElementById('admin-token');
    const token = tokenInput.value;
    const errorDiv = document.getElementById('error-message');

    if (!token) {
        showError('Inserisci il token admin');
        return;
    }

    try {
        const response = await fetch(`${API_URL}/api/admin/login`, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ token })
        });

        const data = await response.json();

        if (response.ok) {
            authToken = data.apiKey;
            localStorage.setItem('admin_token', authToken);
            checkAuth();
            loadApps();
            tokenInput.value = '';
        } else {
            showError(data.error || 'Login fallito');
        }
    } catch (error) {
        showError('Errore connessione API: ' + error.message);
    }
}

function logout() {
    localStorage.removeItem('admin_token');
    authToken = null;
    checkAuth();
}

async function loadApps() {
    const container = document.getElementById('apps-list');
    container.innerHTML = '<div class="col-span-full text-center py-10"><i class="fas fa-spinner fa-spin text-3xl"></i></div>';

    try {
        const response = await fetch(`${API_URL}/api/apps`);
        const data = await response.json();
        renderApps(data.apps || data);
    } catch (error) {
        container.innerHTML = '<div class="col-span-full text-center text-red-400 py-10">Errore caricamento app</div>';
    }
}

function renderApps(apps) {
    const container = document.getElementById('apps-list');

    if (!apps || apps.length === 0) {
        container.innerHTML = '<div class="col-span-full text-center py-10 text-gray-500">Nessuna applicazione. Aggiungine una!</div>';
        return;
    }

    container.innerHTML = '';

    apps.forEach(app => {
        const appCard = document.createElement('div');
        appCard.className = 'bg-gray-850 rounded-xl overflow-hidden shadow-lg border border-gray-700 hover:shadow-xl transition-shadow duration-300';
        appCard.innerHTML = `
            <div class="p-6">
                <div class="flex items-start justify-between mb-4">
                    <div class="flex items-center">
                        <div class="w-12 h-12 rounded-lg bg-gradient-to-br ${app.colors || 'from-gray-600 to-gray-800'} flex items-center justify-center mr-4">
                            <i class="${app.icon || 'fa-package'} fa-xl text-white"></i>
                        </div>
                        <div>
                            <h3 class="text-xl font-bold">${app.name}</h3>
                            <span class="text-xs text-gray-500 font-mono">ID: ${app.id}</span>
                        </div>
                    </div>
                    <div class="flex space-x-2">
                        <button onclick="editApp(${app.id})" class="px-3 py-1 text-xs bg-blue-600 hover:bg-blue-700 rounded">
                            <i class="fas fa-edit"></i>
                        </button>
                        <button onclick="deleteApp(${app.id})" class="px-3 py-1 text-xs bg-red-600 hover:bg-red-700 rounded">
                            <i class="fas fa-trash"></i>
                        </button>
                    </div>
                </div>
                <p class="text-gray-400 text-sm mb-4">${app.description || ''}</p>
                <div class="bg-gray-900 rounded-lg p-2 space-y-1">
                    <div class="flex items-center text-xs text-gray-500">
                        <i class="fas fa-terminal mr-2"></i>APT: ${app.packages?.apt || 'N/A'}
                    </div>
                    <div class="flex items-center text-xs text-gray-500">
                        <i class="fas fa-code mr-2"></i>AppStream: ${app.packages?.appstream || 'N/A'}
                    </div>
                    <div class="flex items-center text-xs text-gray-500">
                        <i class="fas fa-cloud-download-alt mr-2"></i>Flatpak: ${app.packages?.flatpak || 'N/A'}
                    </div>
                </div>
            </div>
        `;
        container.appendChild(appCard);
    });
}

function showError(message) {
    const errorDiv = document.getElementById('error-message');
    errorDiv.textContent = message;
    errorDiv.classList.remove('hidden');
    setTimeout(() => errorDiv.classList.add('hidden'), 5000);
}

function showAddForm() {
    document.getElementById('form-title').textContent = 'Aggiungi Applicazione';
    document.getElementById('app-form').reset();
    document.getElementById('app-id').value = '';
    document.getElementById('app-id-input').value = '';
    document.getElementById('app-name').value = '';
    document.getElementById('app-description').value = '';
    document.getElementById('app-icon').value = 'fa-package';
    document.getElementById('app-colors').value = 'from-purple-500 to-indigo-600';
    document.getElementById('app-apt').value = '';
    document.getElementById('app-appstream').value = '';
    document.getElementById('app-flatpak').value = '';
    document.getElementById('app-form-modal').classList.remove('hidden');
}

function closeForm() {
    document.getElementById('app-form-modal').classList.add('hidden');
}

async function saveApp(event) {
    event.preventDefault();

    const idInput = document.getElementById('app-id-input').value;
    const name = document.getElementById('app-name').value;
    const description = document.getElementById('app-description').value;
    const icon = document.getElementById('app-icon').value;
    const colors = document.getElementById('app-colors').value;
    const apt = document.getElementById('app-apt').value;
    const appstream = document.getElementById('app-appstream').value;
    const flatpak = document.getElementById('app-flatpak').value;

    const appData = {
        id: idInput,
        name,
        description,
        icon,
        colors,
        packages: { apt, appstream, flatpak }
    };

    const isEdit = document.getElementById('app-id').value;
    const method = isEdit ? 'PUT' : 'POST';
    const url = isEdit ? `${API_URL}/api/admin/apps/${document.getElementById('app-id').value}` : `${API_URL}/api/admin/apps`;

    try {
        const response = await fetch(url, {
            method,
            headers: {
                'Content-Type': 'application/json',
                'Authorization': `Bearer ${authToken}`
            },
            body: JSON.stringify(appData)
        });

        if (response.ok) {
            closeForm();
            loadApps();
        } else {
            const error = await response.json();
            showError(error.error || 'Salvataggio fallito');
        }
    } catch (error) {
        showError('Errore: ' + error.message);
    }
}

async function editApp(id) {
    const apps = await fetch(`${API_URL}/api/apps`).then(r => r.json());
    const app = (apps.apps || apps).find(a => a.id === id);

    if (!app) return;

    document.getElementById('form-title').textContent = 'Modifica Applicazione';
    document.getElementById('app-id').value = app.id;
    document.getElementById('app-id-input').value = app.id;
    document.getElementById('app-name').value = app.name;
    document.getElementById('app-description').value = app.description;
    document.getElementById('app-icon').value = app.icon || 'fa-package';
    document.getElementById('app-colors').value = app.colors || 'from-purple-500 to-indigo-600';
    document.getElementById('app-apt').value = app.packages?.apt || '';
    document.getElementById('app-appstream').value = app.packages?.appstream || '';
    document.getElementById('app-flatpak').value = app.packages?.flatpak || '';
    document.getElementById('app-form-modal').classList.remove('hidden');
}

async function deleteApp(id) {
    if (!confirm('Vuoi eliminare questa applicazione?')) return;

    try {
        const response = await fetch(`${API_URL}/api/admin/apps/${id}`, {
            method: 'DELETE',
            headers: { 'Authorization': `Bearer ${authToken}` }
        });

        if (response.ok) {
            loadApps();
        } else {
            showError('Eliminazione fallita');
        }
    } catch (error) {
        showError('Errore: ' + error.message);
    }
}

// Close modal on outside click
document.getElementById('app-form-modal').addEventListener('click', (e) => {
    if (e.target.classList.contains('fixed')) {
        closeForm();
    }
});