/**
 * pc-live  |  Software Store App
 */
const StoreApp = (() => {
  const WIN_ID = 'app-store';
  let _apps    = [];
  let _appsMap = {};  // app_id -> app (for dependency lookups)
  let _filter  = { category: 'all', search: '', installedOnly: false };

  // Category definitions – icon + label.
  // Order here determines sidebar order.
  const CATEGORY_META = {
    all:           { label: 'All Apps',      icon: '🗂'  },
    system:        { label: 'System',        icon: '🖥'  },
    utility:       { label: 'Utility',       icon: '🔧'  },
    communication: { label: 'Communication', icon: '📡'  },
    security:      { label: 'Security',      icon: '🔐'  },
    business:      { label: 'Business',      icon: '💼'  },
    government:    { label: 'Government',    icon: '🏛'  },
    entertainment: { label: 'Entertainment', icon: '🎮'  },
    darknet:       { label: 'Darknet',       icon: '🌑'  },
  };

  /* ── Helpers ─────────────────────────────────────────────── */

  // Only show categories that actually have apps in the current list
  function getActiveCategories() {
    const present = new Set(['all']);
    for (const app of _apps) {
      if (app.category) present.add(app.category);
    }
    return Object.keys(CATEGORY_META).filter(c => present.has(c));
  }

  function filtered() {
    let list = _apps;
    if (_filter.installedOnly) list = list.filter(a => a.installed);
    if (_filter.category !== 'all') list = list.filter(a => a.category === _filter.category);
    if (_filter.search) {
      const q = _filter.search.toLowerCase();
      list = list.filter(a =>
        (a.name        || '').toLowerCase().includes(q) ||
        (a.description || '').toLowerCase().includes(q)
      );
    }
    return list;
  }

  /* ── Render ─────────────────────────────────────────────── */

  function renderSidebar() {
    const cats = getActiveCategories();
    return `
      <div class="app-sidebar">
        <div class="sidebar-section">Categories</div>
        ${cats.map(c => {
          const m = CATEGORY_META[c] || { icon: '📂', label: c };
          return `
          <div class="sidebar-item ${_filter.category === c ? 'active' : ''}"
               onclick="StoreApp._setCategory('${c}')">
            ${m.icon} ${m.label}
          </div>`;
        }).join('')}
      </div>`;
  }

  function renderCard(app) {
    const icon       = app.icon || '📦';
    const priceLabel = app.price > 0 ? `$${app.price.toLocaleString()}` : 'Free';
    const priceClass = app.price > 0 ? '' : 'free';
    const catMeta    = CATEGORY_META[app.category] || { icon: '📂' };

    // Resolve missing dependencies
    const missingDeps = (app.dependencies || [])
      .filter(depId => { const d = _appsMap[depId]; return !d || !d.installed; })
      .map(depId    => { const d = _appsMap[depId]; return d ? d.name : depId; });

    // Action buttons
    let action = '';
    if (app.installed) {
      if (app.update_available) {
        action = `<button class="btn-primary btn-sm" onclick="StoreApp._install('${app.app_id}')">↑ Update</button>`;
      } else {
        action = `<button class="btn-ghost btn-sm" style="cursor:default;opacity:.5" disabled>✓ Installed</button>`;
      }
      if (!app.default) {
        action += `<button class="btn-danger btn-sm" onclick="StoreApp._uninstall('${app.app_id}')">✕</button>`;
      }
    } else {
      const locked = missingDeps.length > 0;
      action = `<button class="btn-primary btn-sm"
        ${locked ? 'style="opacity:.4" title="Missing: ' + missingDeps.join(', ') + '"' : ''}
        onclick="StoreApp._install('${app.app_id}')">Install</button>`;
    }

    // Info badges
    let badges = `<span class="tag">${catMeta.icon} ${app.category || 'other'}</span>`;
    badges    += `<span class="tag">v${app.version || '?'}</span>`;
    if (app.installed)       badges += `<span class="tag tag-accent">✓</span>`;
    if (app.update_available) badges += `<span class="tag" style="color:var(--warning);border-color:rgba(245,158,11,.4)">↑ Update</span>`;
    if (app.permissions?.job) badges += `<span class="tag" style="color:var(--text-dim)">🔑 ${app.permissions.job}</span>`;
    if (missingDeps.length)   badges += `<span class="tag" style="color:var(--error);border-color:rgba(239,68,68,.3)">⚠ Needs: ${missingDeps.join(', ')}</span>`;

    return `
      <div class="store-card ${app.installed ? 'store-card--installed' : ''}">
        <div class="store-card-icon">${icon}</div>
        <div class="store-card-name">${app.name || app.app_id}</div>
        <div class="store-card-desc">${app.description || ''}</div>
        <div class="store-card-footer"><div style="display:flex;gap:4px;flex-wrap:wrap">${badges}</div></div>
        <div class="store-card-footer">
          <span class="store-price ${priceClass}">${priceLabel}</span>
          <div style="display:flex;gap:4px">${action}</div>
        </div>
      </div>`;
  }

  function _refresh() {
    const body = WindowManager.getBody(WIN_ID);
    if (!body) return;

    const list       = filtered();
    const instCount  = _apps.filter(a => a.installed).length;
    const totalCount = _apps.length;

    body.innerHTML = `
      <div class="app-layout" style="height:100%">
        ${renderSidebar()}
        <div style="flex:1;display:flex;flex-direction:column;overflow:hidden">
          <div class="app-content" style="flex:1">
            <div class="search-bar">
              <input type="text" placeholder="Search apps…"
                     value="${(_filter.search || '').replace(/"/g, '&quot;')}"
                     oninput="StoreApp._setSearch(this.value)" id="store-search"/>
              <button class="btn-sm ${_filter.installedOnly ? 'btn-primary' : 'btn-ghost'}"
                      onclick="StoreApp._toggleInstalled()" title="Show installed only">
                ✓ Installed
              </button>
            </div>
            ${list.length === 0
              ? `<div class="empty-state"><div class="empty-icon">📦</div><p>No apps found</p></div>`
              : `<div class="store-grid">${list.map(renderCard).join('')}</div>`
            }
          </div>
          <div class="store-statusbar">
            📦 <strong>${instCount}</strong> installed &nbsp;·&nbsp; ${totalCount} available
          </div>
        </div>
      </div>`;
  }

  /* ── Filter actions ─────────────────────────────────────── */
  function _setCategory(cat) { _filter.category = cat; _refresh(); }
  function _setSearch(q)     { _filter.search   = q;   _refresh(); }
  function _toggleInstalled() {
    _filter.installedOnly = !_filter.installedOnly;
    _refresh();
  }

  /* ── Install / Uninstall ─────────────────────────────────── */
  function _install(appId)   { fetchNui('installApp',   { appId }); }
  function _uninstall(appId) { fetchNui('uninstallApp', { appId }); }

  /* ── NUI event – store data received ────────────────────── */
  function onStoreData(apps) {
    _apps    = apps || [];
    _appsMap = {};
    for (const a of _apps) _appsMap[a.app_id] = a;
    _refresh();
  }

  /* ── Open ───────────────────────────────────────────────── */
  function open() {
    const created = WindowManager.create({
      id:      WIN_ID,
      title:   'Software Store',
      icon:    '🛒',
      width:   860,
      height:  560,
      content: '',
    });

    if (created) {
      _apps    = [];
      _appsMap = {};
      _filter  = { category: 'all', search: '', installedOnly: false };
      _refresh();
      fetchNui('getStore', {});
    }
  }

  return { open, _setCategory, _setSearch, _toggleInstalled, _install, _uninstall, onStoreData };
})();