import type { UIState } from '@presentation/state/UIState';
import type { QueryBus } from '@application/handlers/QueryBus';
import type { DashboardResult } from '@application/queries/GetDashboard';
import { esc } from '@presentation/helpers/format';

export class Sidebar {
  private el: HTMLElement | null = null;
  private cachedVersion: string | null = null;

  constructor(
    private uiState: UIState,
    private queryBus: QueryBus,
  ) {}

  render(container: HTMLElement): void {
    this.el = document.createElement('aside');
    this.el.className = 'sidebar-new';
    container.appendChild(this.el);
    this.update();
    this.fetchAndInjectVersion();
  }

  update(): void {
    if (!this.el) return;

    const data = this.queryBus.execute<DashboardResult>({ type: 'get-dashboard' });
    const enclosList = data.enclosSummaries;
    const activeView = this.uiState.activeView;

    let html = '';

    // ── Header ──
    html += `
      <div class="sb-header">
        <div class="sb-logo-wrap">
          <img src="icone_sidebar.png" alt="logo" class="sb-logo-img" />
        </div>
        <div class="sb-brand">
          <span class="sb-brand-name">Obsidienne</span>
          <span class="sb-brand-sub">Gestion d'&eacute;levage</span>
        </div>
      </div>
    `;

    // ── Nav ──
    html += `<div class="sb-nav">`;

    // Section Principal
    html += `<div class="sb-section">`;
    html += `<div class="sb-section-head"><span class="sb-section-label">Principal</span></div>`;
    html += this.item('dashboard', 'dashboard', 'Tableau de bord', activeView === 'dashboard');
    html += this.item('statistiques', 'bar_chart', 'Statistiques', activeView === 'statistiques');
    html += `</div>`;

    // Section Enclos
    html += `<div class="sb-section">`;
    html += `<div class="sb-section-head"><span class="sb-section-label">Enclos</span></div>`;
    enclosList.forEach(enc => {
      const isActive = activeView === enc.id;
      const dotClass = enc.running ? 'running' : 'idle';
      html += `<button class="sb-item${isActive ? ' active' : ''}" data-view="${enc.id}">`;
      html += `<span class="sb-item-icon material-symbols-outlined">pentagon</span>`;
      html += `<span class="sb-item-text">${esc(enc.name)}</span>`;
      html += `<span class="sb-dot ${dotClass}"></span>`;
      html += `</button>`;
    });
    html += `</div>`;

    // Section Outils
    html += `<div class="sb-section">`;
    html += `<div class="sb-section-head"><span class="sb-section-label">Outils</span></div>`;
    html += this.item('accouplement', 'favorite',    'Accouplement', activeView === 'accouplement');
    html += this.item('appro',        'science',      'R\u00e9appro',  activeView === 'appro');
    html += this.item('inventaire',   'inventory_2',  'Inventaire',   activeView === 'inventaire');
    html += this.item('workflows',    'account_tree', 'Workflows',    activeView === 'workflows');
    html += `</div>`;

    html += `</div>`; // end sb-nav

    // ── Footer ──
    html += `
      <div class="sb-footer">
        ${this.item('parametres', 'settings', 'Param\u00e8tres', activeView === 'parametres')}
        <div class="sb-version">
          <span class="material-symbols-outlined">info</span>
          <span id="sb-ver">v\u2014</span>
        </div>
      </div>
    `;

    this.el.innerHTML = html;
    this.bindEvents();
    this.fetchAndInjectVersion();
  }

  private item(viewId: string, icon: string, label: string, active: boolean): string {
    return `<button class="sb-item${active ? ' active' : ''}" data-view="${viewId}">` +
      `<span class="sb-item-icon material-symbols-outlined">${icon}</span>` +
      `<span class="sb-item-text">${esc(label)}</span>` +
      `</button>`;
  }

  private bindEvents(): void {
    if (!this.el) return;
    this.el.querySelectorAll<HTMLElement>('.sb-item[data-view]').forEach(btn => {
      btn.addEventListener('click', () => {
        const view = btn.dataset['view']!;
        const viewValue: string | number = /^\d+$/.test(view) ? Number(view) : view;
        this.uiState.setActiveView(viewValue);
      });
    });
  }

  private fetchAndInjectVersion(): void {
    if (this.cachedVersion) {
      const verEl = this.el?.querySelector('#sb-ver');
      if (verEl) verEl.textContent = `v${this.cachedVersion}`;
      return;
    }
    const api = (window as any).electronAPI;
    if (!api?.getVersion) return;
    api.getVersion().then((v: string) => {
      this.cachedVersion = v;
      const verEl = this.el?.querySelector('#sb-ver');
      if (verEl) verEl.textContent = `v${v}`;
    }).catch(() => {});
  }

  destroy(): void {
    this.el?.remove();
    this.el = null;
  }
}