// Main JavaScript file for Flask Files

document.addEventListener('DOMContentLoaded', function () {
    // Initialize components
    initializeViewToggle();
    initializeFolderNavigation();
    initializeModals();
    initializeContextMenu();
    initializeUploadFunctionality();

    // Register service worker if supported
    if ('serviceWorker' in navigator) {
        navigator.serviceWorker.register('/static/js/service-worker.js')
            .then(function (registration) {
                console.log('Service Worker registered with scope:', registration.scope);
            }).catch(function (error) {
                console.log('Service Worker registration failed:', error);
            });
    }

    // Initialize flash message close buttons
    initFlashMessages();

    // Initialize any other global functionality
    initGlobalDropzone();
});

// Toggle between grid and list views
function initializeViewToggle() {
    const gridViewBtn = document.getElementById('grid-view-btn');
    const listViewBtn = document.getElementById('list-view-btn');
    const filesContainer = document.getElementById('files-container');

    if (gridViewBtn && listViewBtn && filesContainer) {
        gridViewBtn.addEventListener('click', function () {
            filesContainer.classList.add('grid-view');
            filesContainer.classList.remove('list-view');
            gridViewBtn.classList.add('active');
            listViewBtn.classList.remove('active');
            localStorage.setItem('fileViewPreference', 'grid');
        });

        listViewBtn.addEventListener('click', function () {
            filesContainer.classList.add('list-view');
            filesContainer.classList.remove('grid-view');
            listViewBtn.classList.add('active');
            gridViewBtn.classList.remove('active');
            localStorage.setItem('fileViewPreference', 'list');
        });

        // Load user preference from localStorage
        const viewPreference = localStorage.getItem('fileViewPreference') || 'grid';
        if (viewPreference === 'grid') {
            gridViewBtn.click();
        } else {
            listViewBtn.click();
        }
    }
}

// Add animations for folder navigation
function initializeFolderNavigation() {
    // Add click event to folder items
    document.querySelectorAll('.folder-item').forEach(folder => {
        folder.addEventListener('click', function (e) {
            e.preventDefault();

            const href = this.getAttribute('href');
            const filesContainer = document.getElementById('files-container');

            // Add transition class
            filesContainer.classList.add('changing');

            // After a short delay, navigate to the folder
            setTimeout(() => {
                window.location.href = href;
            }, 200);
        });
    });

    // Add the animation class when page loads
    const filesContainer = document.getElementById('files-container');
    if (filesContainer) {
        // Remove the class to trigger animation
        filesContainer.classList.add('folder-enter-active');
    }
}

// Modal handling
function initializeModals() {
    // Hide all modals by default
    document.querySelectorAll('.modal, .upload-modal, [class*="-modal"]').forEach(modal => {
        modal.style.display = 'none';
        modal.style.opacity = '0';
        modal.style.visibility = 'hidden';

        // Get close buttons
        const closeButtons = modal.querySelectorAll('.modal-close, .close-btn, .modal-cancel');
        closeButtons.forEach(btn => {
            btn.addEventListener('click', function () {
                modal.classList.remove('active');
            });
        });

        // Close when clicking outside
        modal.addEventListener('click', function (e) {
            if (e.target === modal) {
                modal.classList.remove('active');
            }
        });
    });

    // Setup modal triggers
    document.querySelectorAll('[data-modal]').forEach(trigger => {
        trigger.addEventListener('click', function () {
            const modalId = this.dataset.modal;
            const modal = document.getElementById(modalId);
            if (modal) {
                modal.classList.add('active');
            }
        });
    });
}

// Context menu for right-click on files/folders
function initializeContextMenu() {
    const contextMenu = document.getElementById('context-menu');

    if (!contextMenu) return;

    document.addEventListener('contextmenu', function (e) {
        const fileItem = e.target.closest('.file-item, .folder-item');

        if (fileItem) {
            e.preventDefault();

            const itemId = fileItem.getAttribute('data-id');
            const itemType = fileItem.classList.contains('file-item') ? 'file' : 'folder';

            // Position menu
            contextMenu.style.left = `${e.pageX}px`;
            contextMenu.style.top = `${e.pageY}px`;

            // Show menu
            contextMenu.style.display = 'block';
            contextMenu.setAttribute('data-item-id', itemId);
            contextMenu.setAttribute('data-item-type', itemType);

            // Set up buttons for different item types
            setupContextMenuActions(contextMenu, itemId, itemType);
        }
    });

    // Hide menu on click elsewhere
    document.addEventListener('click', function () {
        contextMenu.style.display = 'none';
    });
}

function setupContextMenuActions(menu, itemId, itemType) {
    // Show/hide appropriate actions based on item type
    menu.querySelectorAll('[data-action]').forEach(action => {
        const forType = action.getAttribute('data-for');
        if (forType === 'all' || forType === itemType) {
            action.style.display = 'block';
        } else {
            action.style.display = 'none';
        }
    });
}

// Initialize file upload functionality
function initializeUploadFunctionality() {
    const uploadBtn = document.querySelector('a[href*="upload"]');
    const fileInput = document.getElementById('file-upload');

    if (uploadBtn && fileInput) {
        fileInput.addEventListener('change', function (e) {
            if (this.files.length) {
                const formData = new FormData();

                for (let i = 0; i < this.files.length; i++) {
                    formData.append('file', this.files[i]);
                }

                // Get current folder ID from URL if available
                const urlParams = new URLSearchParams(window.location.search);
                const folderId = urlParams.get('folder_id');

                if (folderId) {
                    formData.append('folder_id', folderId);
                }

                fetch('/files/upload', {
                    method: 'POST',
                    body: formData,
                })
                    .then(response => response.json())
                    .then(data => {
                        if (data.success) {
                            // Refresh page to show new file
                            window.location.reload();
                        } else {
                            alert('Upload failed: ' + data.error);
                        }
                    })
                    .catch(error => {
                        console.error('Error:', error);
                        alert('Upload failed. Please try again.');
                    });
            }
        });
    }
}

function initFlashMessages() {
    document.querySelectorAll('.flash-close').forEach(btn => {
        btn.addEventListener('click', function () {
            this.closest('.flash-message').remove();
        });
    });
}

function initGlobalDropzone() {
    // Setup global dropzone for file uploads
    const body = document.body;

    // Only setup if we're on a page that can handle uploads
    if (document.getElementById('file-upload')) {
        // Create dropzone overlay if it doesn't exist
        if (!document.querySelector('.global-dropzone')) {
            const dropzone = document.createElement('div');
            dropzone.className = 'global-dropzone';
            dropzone.innerHTML = `
                <div class="dropzone-content">
                    <div class="dropzone-icon">
                        <i class="fas fa-cloud-upload-alt fa-3x"></i>
                    </div>
                    <h3>Drop files to upload</h3>
                    <p>Your files will be uploaded to the current folder</p>
                </div>
            `;
            document.body.appendChild(dropzone);
        }

        // Get the dropzone element
        const dropzone = document.querySelector('.global-dropzone');

        // Handle drag events
        body.addEventListener('dragover', function (e) {
            e.preventDefault();
            e.stopPropagation();
            dropzone.classList.add('active');
        });

        body.addEventListener('dragleave', function (e) {
            if (e.target === body || e.target === dropzone) {
                dropzone.classList.remove('active');
            }
        });

        dropzone.addEventListener('dragleave', function (e) {
            if (e.target === dropzone) {
                dropzone.classList.remove('active');
            }
        });

        dropzone.addEventListener('dragover', function (e) {
            e.preventDefault();
            e.stopPropagation();
        });

        dropzone.addEventListener('drop', function (e) {
            e.preventDefault();
            e.stopPropagation();
            dropzone.classList.remove('active');

            // Get the file input element
            const fileInput = document.getElementById('file-upload');

            // Handle the dropped files
            if (e.dataTransfer.files.length > 0) {
                // Set the files to the file input
                fileInput.files = e.dataTransfer.files;

                // Trigger the change event
                const event = new Event('change', { bubbles: true });
                fileInput.dispatchEvent(event);
            }
        });
    }
}