// SimpleNote Web - Main Application

import { api } from './api.js';
import { renderLogin, initLoginHandlers } from './views/login.js';
import { renderDashboard } from './views/dashboard.js';
import { renderDocument } from './views/document.js';
import { renderEditor } from './views/editor.js';

class App {
  constructor() {
    this.currentView = null;
    this.state = {
      token: localStorage.getItem('sn_token'),
      view: 'dashboard',
      params: {}
    };
  }

  async init() {
    if (!this.state.token) {
      this.renderLogin();
      return;
    }

    api.setToken(this.state.token);
    
    try {
      await api.login(this.state.token);
      this.render();
    } catch (e) {
      this.state.token = null;
      localStorage.removeItem('sn_token');
      this.renderLogin();
    }
  }

  renderLogin() {
    const app = document.getElementById('app');
    app.innerHTML = renderLogin();
    initLoginHandlers(async (token) => {
      try {
        await api.login(token);
        this.state.token = token;
        this.state.view = 'dashboard';
        this.render();
      } catch (e) {
        return 'Invalid token';
      }
    });
  }

  async render() {
    const app = document.getElementById('app');

    switch (this.state.view) {
      case 'dashboard':
        await renderDashboard(this);
        break;
      case 'document':
        await renderDocument(this);
        break;
      case 'editor':
        renderEditor(this);
        break;
      default:
        await renderDashboard(this);
    }
  }

  navigate(view, params = {}) {
    this.state.view = view;
    this.state.params = params;
    this.render();
  }

  showToast(message, type = 'info') {
    const container = document.getElementById('toast-container');
    const toast = document.createElement('div');
    toast.className = `toast ${type}`;
    toast.innerHTML = `
      <span class="toast-message">${message}</span>
      <button class="toast-close" onclick="this.parentElement.remove()">✕</button>
    `;
    container.appendChild(toast);
    setTimeout(() => toast.remove(), 4000);
  }

  async confirmDelete(message) {
    return new Promise((resolve) => {
      const backdrop = document.createElement('div');
      backdrop.className = 'modal-backdrop';
      backdrop.innerHTML = `
        <div class="modal">
          <div class="modal-header">
            <span>⚠️</span>
            <h3>Confirm Delete</h3>
          </div>
          <div class="modal-body">
            <p>${message}</p>
          </div>
          <div class="modal-footer">
            <button class="btn btn-ghost" id="cancel-btn">Cancel</button>
            <button class="btn btn-danger" id="confirm-btn">Delete</button>
          </div>
        </div>
      `;
      document.body.appendChild(backdrop);

      backdrop.querySelector('#cancel-btn').onclick = () => {
        backdrop.remove();
        resolve(false);
      };
      backdrop.querySelector('#confirm-btn').onclick = () => {
        backdrop.remove();
        resolve(true);
      };
      backdrop.onclick = (e) => {
        if (e.target === backdrop) {
          backdrop.remove();
          resolve(false);
        }
      };
    });
  }
}

window.app = new App();
app.init();

// Keyboard shortcuts
document.addEventListener('keydown', (e) => {
  if (e.key === 'Escape' && window.app.state.view === 'editor') {
    window.app.navigate('dashboard');
  }
  if ((e.ctrlKey || e.metaKey) && e.key === 'n' && window.app.state.view === 'dashboard') {
    e.preventDefault();
    window.app.navigate('editor');
  }
});