import { api } from '../api.js';
import './login-view.js';
import './file-list.js';
import './file-upload.js';
import './share-modal.js';
import './photo-gallery.js';
import './file-preview.js';
import { shortcuts } from '../shortcuts.js';

export class RBoxApp extends HTMLElement {
    constructor() {
        super();
        this.currentView = 'files';
        this.currentFolderId = null;
        this.user = null;
    }

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

    async init() {
        if (!api.getToken()) {
            this.showLogin();
        } else {
            try {
                this.user = await api.getCurrentUser();
                this.render();
            } catch (error) {
                this.showLogin();
            }
        }
    }

    showLogin() {
        this.innerHTML = '<login-view></login-view>';
        const loginView = this.querySelector('login-view');
        loginView.addEventListener('auth-success', () => this.init());
    }

    render() {
        this.innerHTML = `
            <div class="app-container">
                <header class="app-header">
                    <div class="header-left">
                        <h1 class="app-title">RBox</h1>
                    </div>
                    <div class="header-center">
                        <input type="search" placeholder="Search..." class="search-input" id="search-input">
                    </div>
                    <div class="header-right">
                        <span class="user-info">${this.user.username}</span>
                        <button class="button" id="logout-btn">Logout</button>
                    </div>
                </header>

                <div class="app-body">
                    <aside class="app-sidebar">
                        <nav class="sidebar-nav">
                            <h3 class="nav-title">Navigation</h3>
                            <ul class="nav-list">
                                <li><a href="#" class="nav-link active" data-view="files">My Files</a></li>
                                <li><a href="#" class="nav-link" data-view="photos">Photo Gallery</a></li>
                                <li><a href="#" class="nav-link" data-view="shared">Shared Items</a></li>
                                <li><a href="#" class="nav-link" data-view="deleted">Deleted Files</a></li>
                            </ul>
                            <h3 class="nav-title">Quick Access</h3>
                            <ul class="nav-list">
                                <li><a href="#" class="nav-link" data-view="starred">Starred</a></li>
                                <li><a href="#" class="nav-link" data-view="recent">Recent</a></li>
                            </ul>
                        </nav>
                    </aside>

                    <main class="app-main">
                        <div id="main-content">
                            <file-list></file-list>
                        </div>
                    </main>
                </div>

                <file-upload></file-upload>
                <share-modal></share-modal>
                <file-preview></file-preview>
            </div>
        `;

        this.attachListeners();
        this.registerShortcuts();
    }

    registerShortcuts() {
        shortcuts.register('ctrl+u', () => {
            const upload = this.querySelector('file-upload');
            if (upload) {
                upload.setFolder(this.currentFolderId);
                upload.show();
            }
        });

        shortcuts.register('ctrl+f', () => {
            const searchInput = this.querySelector('#search-input');
            if (searchInput) {
                searchInput.focus();
            }
        });

        shortcuts.register('ctrl+/', () => {
            this.showShortcutsHelp();
        });

        shortcuts.register('ctrl+shift+n', () => {
            if (this.currentView === 'files') {
                const fileList = this.querySelector('file-list');
                if (fileList) {
                    fileList.triggerCreateFolder();
                }
            }
        });

        shortcuts.register('1', () => {
            this.switchView('files');
        });

        shortcuts.register('2', () => {
            this.switchView('photos');
        });

        shortcuts.register('3', () => {
            this.switchView('shared');
        });

        shortcuts.register('4', () => {
            this.switchView('deleted');
        });

        shortcuts.register('f2', () => {
            console.log('Rename shortcut - to be implemented');
        });
    }

    showShortcutsHelp() {
        const helpContent = `
            <div class="shortcuts-help-modal">
                <div class="shortcuts-help-content">
                    <h2>Keyboard Shortcuts</h2>
                    <div class="shortcuts-list">
                        <h3>File Operations</h3>
                        <div class="shortcut-item">
                            <kbd>Ctrl + U</kbd>
                            <span>Upload files</span>
                        </div>
                        <div class="shortcut-item">
                            <kbd>Ctrl + Shift + N</kbd>
                            <span>Create new folder</span>
                        </div>
                        <div class="shortcut-item">
                            <kbd>Ctrl + F</kbd>
                            <span>Focus search</span>
                        </div>

                        <h3>Navigation</h3>
                        <div class="shortcut-item">
                            <kbd>1</kbd>
                            <span>My Files</span>
                        </div>
                        <div class="shortcut-item">
                            <kbd>2</kbd>
                            <span>Photo Gallery</span>
                        </div>
                        <div class="shortcut-item">
                            <kbd>3</kbd>
                            <span>Shared Items</span>
                        </div>
                        <div class="shortcut-item">
                            <kbd>4</kbd>
                            <span>Deleted Files</span>
                        </div>

                        <h3>General</h3>
                        <div class="shortcut-item">
                            <kbd>ESC</kbd>
                            <span>Close modals</span>
                        </div>
                        <div class="shortcut-item">
                            <kbd>Ctrl + /</kbd>
                            <span>Show this help</span>
                        </div>
                    </div>
                    <button class="button" id="close-shortcuts-help">Close</button>
                </div>
            </div>
        `;

        const helpDiv = document.createElement('div');
        helpDiv.innerHTML = helpContent;
        helpDiv.querySelector('.shortcuts-help-modal').style.cssText = `
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 10000;
        `;
        document.body.appendChild(helpDiv);

        const closeHelp = () => {
            document.body.removeChild(helpDiv);
            document.removeEventListener('keydown', handleEscape);
        };

        const handleEscape = (e) => {
            if (e.key === 'Escape') {
                closeHelp();
            }
        };

        const closeBtn = helpDiv.querySelector('#close-shortcuts-help');
        closeBtn.addEventListener('click', closeHelp);
        helpDiv.querySelector('.shortcuts-help-modal').addEventListener('click', (e) => {
            if (e.target.classList.contains('shortcuts-help-modal')) closeHelp();
        });

        document.addEventListener('keydown', handleEscape);
    }

    attachListeners() {
        this.querySelector('#logout-btn')?.addEventListener('click', () => {
            api.logout();
        });

        this.querySelectorAll('.nav-link').forEach(link => {
            link.addEventListener('click', (e) => {
                e.preventDefault();
                const view = link.dataset.view;
                this.switchView(view);
            });
        });

        const fileList = this.querySelector('file-list');
        if (fileList) {
            fileList.addEventListener('upload-request', () => {
                const upload = this.querySelector('file-upload');
                upload.setFolder(this.currentFolderId);
                upload.show();
            });

            fileList.addEventListener('folder-open', (e) => {
                this.currentFolderId = e.detail.folderId;
                fileList.loadContents(this.currentFolderId);
            });

            fileList.addEventListener('share-request', (e) => {
                const modal = this.querySelector('share-modal');
                modal.show(e.detail.fileId);
            });
        }

        const upload = this.querySelector('file-upload');
        if (upload) {
            upload.addEventListener('upload-complete', () => {
                const fileList = this.querySelector('file-list');
                fileList.loadContents(this.currentFolderId);
            });
        }

        const searchInput = this.querySelector('#search-input');
        if (searchInput) {
            let searchTimeout;
            searchInput.addEventListener('input', (e) => {
                clearTimeout(searchTimeout);
                const query = e.target.value.trim();
                if (query.length > 0) {
                    searchTimeout = setTimeout(() => this.performSearch(query), 300);
                }
            });
        }

        this.addEventListener('photo-click', (e) => {
            const preview = this.querySelector('file-preview');
            preview.show(e.detail.photo);
        });

        this.addEventListener('share-file', (e) => {
            const modal = this.querySelector('share-modal');
            modal.show(e.detail.file.id);
        });
    }

    async performSearch(query) {
        try {
            const files = await api.searchFiles(query);
            const mainContent = this.querySelector('#main-content');
            mainContent.innerHTML = `
                <div class="search-results">
                    <h2>Search Results for "${query}"</h2>
                    <file-list data-search-mode="true"></file-list>
                </div>
            `;
            const fileList = mainContent.querySelector('file-list');
            fileList.setFiles(files);
            this.attachListeners();
        } catch (error) {
            console.error('Search failed:', error);
        }
    }

    switchView(view) {
        this.currentView = view;

        this.querySelectorAll('.nav-link').forEach(link => {
            link.classList.remove('active');
        });
        this.querySelector(`[data-view="${view}"]`)?.classList.add('active');

        const mainContent = this.querySelector('#main-content');

        switch (view) {
            case 'files':
                mainContent.innerHTML = '<file-list></file-list>';
                this.attachListeners();
                break;
            case 'photos':
                mainContent.innerHTML = '<photo-gallery></photo-gallery>';
                this.attachListeners();
                break;
            case 'shared':
                mainContent.innerHTML = '<div class="placeholder">Shared Items - Coming Soon</div>';
                break;
            case 'deleted':
                mainContent.innerHTML = '<div class="placeholder">Deleted Files - Coming Soon</div>';
                break;
            case 'starred':
                mainContent.innerHTML = '<div class="placeholder">Starred Items - Coming Soon</div>';
                break;
            case 'recent':
                mainContent.innerHTML = '<div class="placeholder">Recent Files - Coming Soon</div>';
                break;
        }
    }
}