/**
 * DITTO Application JavaScript
 * Modern ES6+ syntax with proper error handling
 */
document.addEventListener('DOMContentLoaded', () => {
    console.log('App script loaded.');

    // Initialize Tiptap editor if element exists
    const editorElement = document.getElementById('editor');
    if (editorElement) {
        initTiptapEditor(editorElement);
    }

    // Add Bootstrap tooltips
    var tooltipTriggerList = [].slice.call(document.querySelectorAll('[data-bs-toggle="tooltip"]'));
    var tooltipList = tooltipTriggerList.map(function (tooltipTriggerEl) {
        return new bootstrap.Tooltip(tooltipTriggerEl);
    });

    // Close flash messages after 5 seconds
    setTimeout(function () {
        var alerts = document.querySelectorAll('.alert:not(.alert-persistent)');
        alerts.forEach(function (alert) {
            var bsAlert = bootstrap.Alert.getInstance(alert);
            if (bsAlert) {
                bsAlert.close();
            } else {
                alert.classList.add('fade');
                setTimeout(function () {
                    alert.remove();
                }, 150);
            }
        });
    }, 5000);

    // Add event listener for subnet scan buttons with HTMX
    document.body.addEventListener('htmx:afterOnLoad', function (event) {
        if (event.detail.xhr.status === 200) {
            showNotification('Subnet scan started successfully', 'success');
        }
    });

    // Add markdown preview for documentation fields
    const docTextareas = document.querySelectorAll('textarea[name="documentation"]');
    docTextareas.forEach(function (textarea) {
        // Only if preview container exists
        const previewContainer = document.getElementById('markdown-preview');
        if (previewContainer && textarea) {
            textarea.addEventListener('input', function () {
                // Use the server to render the markdown (safer)
                fetch('/api/markdown-preview', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json',
                    },
                    body: JSON.stringify({ content: textarea.value })
                })
                    .then(response => response.json())
                    .then(data => {
                        previewContainer.innerHTML = data.html;
                    });
            });
        }
    });

    // Wait for DOM to be fully loaded
    document.addEventListener('DOMContentLoaded', function () {
        // Initialize theme toggle
        initThemeToggle();

        // Initialize clipboard functionality
        initClipboard();

        // Initialize port map tooltips
        initTooltips();

        // Initialize mobile sidebar
        initMobileSidebar();

        // Initialize notifications
        initNotifications();
    });

    // Initialize Bootstrap components
    initBootstrapComponents();

    // Setup sidebar toggle functionality
    setupSidebar();

    // Add form validation
    setupFormValidation();
});

/**
 * Initialize Bootstrap components
 */
function initBootstrapComponents() {
    // Initialize all tooltips
    const tooltipTriggerList = document.querySelectorAll('[data-bs-toggle="tooltip"]');
    tooltipTriggerList.forEach(el => {
        try {
            new bootstrap.Tooltip(el);
        } catch (e) {
            console.warn('Error initializing tooltip:', e);
        }
    });

    // Initialize all popovers
    const popoverTriggerList = document.querySelectorAll('[data-bs-toggle="popover"]');
    popoverTriggerList.forEach(el => {
        try {
            new bootstrap.Popover(el);
        } catch (e) {
            console.warn('Error initializing popover:', e);
        }
    });
}

/**
 * Setup sidebar toggle functionality
 */
function setupSidebar() {
    const sidebarToggler = document.querySelector('.sidebar-toggler');
    const sidebar = document.querySelector('.sidebar');

    if (sidebarToggler && sidebar) {
        sidebarToggler.addEventListener('click', () => {
            sidebar.classList.toggle('show');
        });

        // Close sidebar when clicking outside on mobile
        document.addEventListener('click', (event) => {
            const isClickInside = sidebar.contains(event.target) ||
                sidebarToggler.contains(event.target);

            if (!isClickInside && sidebar.classList.contains('show') && window.innerWidth < 992) {
                sidebar.classList.remove('show');
            }
        });
    }
}

/**
 * Setup form validation
 */
function setupFormValidation() {
    // Add custom validation for forms
    const forms = document.querySelectorAll('.needs-validation');

    forms.forEach(form => {
        form.addEventListener('submit', event => {
            if (!form.checkValidity()) {
                event.preventDefault();
                event.stopPropagation();
            }

            form.classList.add('was-validated');
        }, false);
    });
}

/**
 * Safe query selector with error handling
 * @param {string} selector - CSS selector
 * @param {Element} parent - Parent element (optional)
 * @returns {Element|null} - The selected element or null
 */
function $(selector, parent = document) {
    try {
        return parent.querySelector(selector);
    } catch (e) {
        console.warn(`Error selecting "${selector}":`, e);
        return null;
    }
}

/**
 * Format date for display
 * @param {string|Date} date - Date to format
 * @returns {string} - Formatted date string
 */
function formatDate(date) {
    try {
        const d = new Date(date);
        return d.toLocaleDateString(undefined, {
            year: 'numeric',
            month: 'short',
            day: 'numeric',
            hour: '2-digit',
            minute: '2-digit'
        });
    } catch (e) {
        console.warn('Error formatting date:', e);
        return String(date);
    }
}

function initTiptapEditor(element) {
    // Load required Tiptap scripts
    const editorContainer = document.getElementById('editor-container');
    const preview = document.getElementById('markdown-preview');

    // Initialize the Tiptap editor
    const { Editor } = window.tiptap;
    const { StarterKit } = window.tiptapExtensions;

    const editor = new Editor({
        element: element,
        extensions: [
            StarterKit
        ],
        content: element.getAttribute('data-content') || '',
        onUpdate: ({ editor }) => {
            // Update preview with current content
            if (preview) {
                const markdown = editor.getHTML();
                fetch('/api/markdown-preview', {
                    method: 'POST',
                    headers: {
                        'Content-Type': 'application/json',
                    },
                    body: JSON.stringify({ markdown: markdown })
                })
                    .then(response => response.json())
                    .then(data => {
                        preview.innerHTML = data.html;
                    });
            }
        }
    });

    // Store editor reference
    window.editor = editor;

    // Form submission handling
    const form = element.closest('form');
    if (form) {
        form.addEventListener('submit', () => {
            const contentInput = form.querySelector('input[name="content"]');
            if (contentInput) {
                contentInput.value = editor.getHTML();
            }
        });
    }
}

// Copy to clipboard function
function copyToClipboard(text) {
    navigator.clipboard.writeText(text).then(function () {
        // Success notification
        showNotification('Copied to clipboard!', 'success');
    }, function (err) {
        // Error notification
        showNotification('Could not copy text', 'danger');
    });
}

// Show notification
function showNotification(message, type = 'info') {
    const notificationArea = document.getElementById('notification-area');
    if (!notificationArea) return;

    const notification = document.createElement('div');
    notification.className = `alert alert-${type} alert-dismissible fade show`;
    notification.innerHTML = `
        ${message}
        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
    `;

    notificationArea.appendChild(notification);

    // Auto-remove after 5 seconds
    setTimeout(() => {
        if (notification.parentNode) {
            notification.remove();
        }
    }, 5000);
}

function initThemeToggle() {
    const themeToggle = document.getElementById('theme-toggle');

    if (themeToggle) {
        themeToggle.addEventListener('click', function () {
            const currentTheme = document.documentElement.getAttribute('data-bs-theme') || 'light';
            const newTheme = currentTheme === 'dark' ? 'light' : 'dark';

            document.documentElement.setAttribute('data-bs-theme', newTheme);
            localStorage.setItem('theme', newTheme);

            console.log(`Theme switched to ${newTheme} mode`);
        });
    }

    // Load saved theme or use OS preference
    const storedTheme = localStorage.getItem('theme');
    if (storedTheme) {
        document.documentElement.setAttribute('data-bs-theme', storedTheme);
    } else if (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) {
        document.documentElement.setAttribute('data-bs-theme', 'dark');
        localStorage.setItem('theme', 'dark');
    }
}

function initClipboard() {
    // Add click handlers to any clipboard copy buttons
    document.querySelectorAll('.copy-btn').forEach(btn => {
        btn.addEventListener('click', function () {
            const textToCopy = this.getAttribute('data-clipboard-text');
            if (textToCopy) {
                navigator.clipboard.writeText(textToCopy)
                    .then(() => {
                        showNotification('Copied to clipboard!', 'success');
                    })
                    .catch(err => {
                        console.error('Failed to copy: ', err);
                    });
            }
        });
    });
}

function initTooltips() {
    const tooltips = document.querySelectorAll('[data-bs-toggle="tooltip"]');
    if (tooltips.length > 0) {
        Array.from(tooltips).map(tooltipNode => new bootstrap.Tooltip(tooltipNode));
    }
}

function initMobileSidebar() {
    // Sidebar toggle for mobile
    const sidebarToggler = document.querySelector('.sidebar-toggler');
    if (sidebarToggler) {
        sidebarToggler.addEventListener('click', function () {
            document.querySelector('.sidebar').classList.toggle('show');
            document.querySelector('.main-content').classList.toggle('sidebar-open');
        });
    }
}

function initNotifications() {
    // Add flash messages as notifications
    const flashMessages = document.querySelectorAll('.alert.flash-message');
    flashMessages.forEach(message => {
        setTimeout(() => {
            const bsAlert = new bootstrap.Alert(message);
            bsAlert.close();
        }, 5000);
    });
}

// For random port suggestion
async function suggestRandomPort(serverId) {
    try {
        const response = await fetch(`/api/servers/${serverId}/suggest_port`);
        if (!response.ok) throw new Error('Failed to get port suggestion');

        const data = await response.json();
        if (data.port) {
            // Copy to clipboard
            navigator.clipboard.writeText(data.port.toString())
                .then(() => {
                    showNotification(`Port ${data.port} copied to clipboard!`, 'success');
                })
                .catch(err => {
                    console.error('Failed to copy: ', err);
                    showNotification(`Suggested free port: ${data.port}`, 'info');
                });
        }
        return data.port;
    } catch (error) {
        console.error('Error:', error);
        showNotification('Failed to suggest port', 'danger');
        return null;
    }
}