import { api } from '../api.js';

export class DeletedFiles extends HTMLElement {
    constructor() {
        super();
        this.deletedFiles = [];
    }

    async connectedCallback() {
        await this.loadDeletedFiles();
    }

    async loadDeletedFiles() {
        try {
            this.deletedFiles = await api.listDeletedFiles();
            this.render();
        } catch (error) {
            console.error('Failed to load deleted files:', error);
            this.innerHTML = '<p class="error-message">Failed to load deleted files.</p>';
        }
    }

    render() {
        if (this.deletedFiles.length === 0) {
            this.innerHTML = `
                <div class="deleted-files-container">
                    <h2>Deleted Files</h2>
                    <p class="empty-state">No deleted files found.</p>
                </div>
            `;
            return;
        }

        this.innerHTML = `
            <div class="deleted-files-container">
                <h2>Deleted Files</h2>
                <div class="file-grid">
                    ${this.deletedFiles.map(file => this.renderDeletedFile(file)).join('')}
                </div>
            </div>
        `;
        this.attachListeners();
    }

    renderDeletedFile(file) {
        const icon = this.getFileIcon(file.mime_type);
        const size = this.formatFileSize(file.size);
        const deletedDate = new Date(file.deleted_at).toLocaleDateString();

        return `
            <div class="file-item deleted-item" data-file-id="${file.id}">
                <div class="file-icon">${icon}</div>
                <div class="file-name">${file.name}</div>
                <div class="file-size">${size}</div>
                <div class="file-deleted-date">Deleted: ${deletedDate}</div>
                <div class="file-actions-menu">
                    <button class="button button-danger action-btn" data-action="restore" data-id="${file.id}">Restore</button>
                </div>
            </div>
        `;
    }

    getFileIcon(mimeType) {
        if (mimeType.startsWith('image/')) return '&#128247;';
        if (mimeType.startsWith('video/')) return '&#127909;';
        if (mimeType.startsWith('audio/')) return '&#127925;';
        if (mimeType.includes('pdf')) return '&#128196;';
        if (mimeType.includes('text')) return '&#128196;';
        return '&#128196;';
    }

    formatFileSize(bytes) {
        if (bytes < 1024) return bytes + ' B';
        if (bytes < 1048576) return (bytes / 1024).toFixed(1) + ' KB';
        if (bytes < 1073741824) return (bytes / 1048576).toFixed(1) + ' MB';
        return (bytes / 1073741824).toFixed(1) + ' GB';
    }

    attachListeners() {
        this.querySelectorAll('.action-btn').forEach(btn => {
            btn.addEventListener('click', async (e) => {
                e.stopPropagation();
                const action = btn.dataset.action;
                const id = parseInt(btn.dataset.id);
                if (action === 'restore') {
                    await this.handleRestore(id);
                }
            });
        });
    }

    async handleRestore(fileId) {
        if (confirm('Are you sure you want to restore this file?')) {
            try {
                await api.restoreFile(fileId);
                document.dispatchEvent(new CustomEvent('show-toast', {
                    detail: { message: 'File restored successfully!', type: 'success' }
                }));
                await this.loadDeletedFiles(); // Reload the list
            } catch (error) {
                document.dispatchEvent(new CustomEvent('show-toast', {
                    detail: { message: 'Failed to restore file: ' + error.message, type: 'error' }
                }));
            }
        }
    }
}

customElements.define('deleted-files', DeletedFiles);