{% extends "base.html" %}
{% block content %}
  <h1 class="page-title">Welcome{% if current_user and current_user.email %}, {{ current_user.email }}{% endif %}!</h1>

  <div class="row mt-4">
    <div class="col-12">
      <div class="card card-elevated">
        <div class="card-header d-flex justify-content-between align-items-center">
          <h2 class="h5 mb-0">Playlists</h2>
          <form method="post" action="{{ url_for('company.create_playlist') }}" class="d-flex gap-2">
            <input class="form-control" name="name" placeholder="New playlist name" required />
            <button class="btn btn-brand" type="submit">Add</button>
          </form>
        </div>
        <div class="table-responsive">
          <table class="table table-hover mb-0">
            <thead>
              <tr>
                <th>Name</th>
                <th class="text-end">Items</th>
                <th class="text-end">Actions</th>
              </tr>
            </thead>
            <tbody>
              {% for p in playlists %}
                <tr>
                  <td><strong>{{ p.name }}</strong></td>
                  <td class="text-end">{{ p.items|length }}</td>
                  <td class="text-end">
                    <div class="d-inline-flex gap-2">
                      <a class="btn btn-ink btn-sm" href="{{ url_for('company.playlist_detail', playlist_id=p.id) }}">Open</a>
                    </div>
                  </td>
                </tr>
              {% else %}
                <tr>
                  <td colspan="3" class="text-muted">No playlists yet.</td>
                </tr>
              {% endfor %}
            </tbody>
          </table>
        </div>
      </div>
    </div>

    <div class="col-12 mt-4">
      <div class="card card-elevated">
        <div class="card-header">
          <h2 class="h5 mb-0">Displays</h2>
        </div>
        <div class="card-body">
          <div class="row g-3">
            {% for d in displays %}
              <div class="col-12 col-md-6 col-xl-4">
                <div class="card display-gallery-card h-100">
                  <div class="display-preview">
                    <iframe
                      title="Preview — {{ d.name }}"
                      data-display-id="{{ d.id }}"
                      src="{{ url_for('display.display_player', token=d.token) }}?preview=1"
                      loading="lazy"
                      referrerpolicy="no-referrer"
                    ></iframe>
                  </div>

                  <div class="card-body d-flex flex-column gap-2">
                    <div>
                      <div class="fw-bold">{{ d.name }}</div>
                      <div class="text-muted small js-display-desc" data-display-id="{{ d.id }}">
                        {{ d.description or "—" }}
                      </div>
                    </div>

                    <div class="d-flex flex-column gap-2 mt-auto">
                      {# Multi-playlist selector: button opens modal with playlist checkboxes #}
                      <div class="d-flex gap-2 align-items-center">
                        <button
                          type="button"
                          class="btn btn-ink btn-sm js-edit-playlists"
                          data-display-id="{{ d.id }}"
                          data-display-name="{{ d.name }}"
                          data-legacy-playlist-id="{{ d.assigned_playlist_id or '' }}"
                          data-active-playlist-ids="{{ d.display_playlists | map(attribute='playlist_id') | list | join(',') }}"
                        >
                          Select playlists
                        </button>
                        <div class="small text-muted">
                          <span class="js-active-playlists-summary" data-display-id="{{ d.id }}">—</span>
                        </div>
                      </div>

                      <div class="d-flex justify-content-end">
                        <button
                          type="button"
                          class="btn btn-ink btn-sm js-edit-desc"
                          data-display-id="{{ d.id }}"
                          data-display-name="{{ d.name }}"
                          data-current-desc="{{ d.description or '' }}"
                        >
                          Edit description
                        </button>
                      </div>
                    </div>
                  </div>
                </div>
              </div>
            {% else %}
              <div class="col-12">
                <div class="text-muted">No displays. Ask admin to add displays.</div>
              </div>
            {% endfor %}
          </div>
        </div>
      </div>
    </div>
  </div>

  <!-- Toast notifications -->
  <div class="toast-container position-fixed bottom-0 end-0 p-3" style="z-index: 1080">
    <div id="companyToast" class="toast" role="alert" aria-live="polite" aria-atomic="true">
      <div class="toast-body" id="companyToastBody">Saved</div>
    </div>
  </div>

  <!-- Edit description modal -->
  <div class="modal fade" id="editDescModal" tabindex="-1" aria-hidden="true">
    <div class="modal-dialog">
      <div class="modal-content">
        <div class="modal-header">
          <h5 class="modal-title" id="editDescModalTitle">Edit description</h5>
          <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
        </div>
        <div class="modal-body">
          <label class="form-label" for="editDescInput">Description</label>
          <textarea class="form-control" id="editDescInput" maxlength="200" rows="3" placeholder="Optional description (max 200 chars)"></textarea>
          <div class="form-text"><span id="editDescCount">0</span>/200</div>
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
          <button type="button" class="btn btn-brand" id="editDescSaveBtn">Save</button>
        </div>
      </div>
    </div>
  </div>

  <!-- Edit playlists modal -->
  <div class="modal fade" id="editPlaylistsModal" tabindex="-1" aria-hidden="true">
    <div class="modal-dialog modal-dialog-scrollable">
      <div class="modal-content">
        <div class="modal-header">
          <h5 class="modal-title" id="editPlaylistsModalTitle">Select playlists</h5>
          <button type="button" class="btn-close" data-bs-dismiss="modal" aria-label="Close"></button>
        </div>
        <div class="modal-body">
          <div class="text-muted small mb-2">Tick the playlists that should be active on this display.</div>
          <div id="editPlaylistsList" class="d-flex flex-column gap-2"></div>
          <div class="form-text mt-2" id="editPlaylistsHint"></div>
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-outline-secondary" data-bs-dismiss="modal">Cancel</button>
          <button type="button" class="btn btn-brand" id="editPlaylistsSaveBtn">Save</button>
        </div>
      </div>
    </div>
  </div>

  {# Embed playlists list as JSON to avoid templating inside JS (keeps JS linters happy). #}
  <script type="application/json" id="allPlaylistsJson">{{ playlists_json|tojson }}</script>
{% endblock %}

{% block page_scripts %}
  <script>
    (function () {
      let ALL_PLAYLISTS = [];
      try {
        const el = document.getElementById('allPlaylistsJson');
        ALL_PLAYLISTS = el ? JSON.parse(el.textContent || '[]') : [];
      } catch (e) {
        ALL_PLAYLISTS = [];
      }

      const toastEl = document.getElementById('companyToast');
      const toastBodyEl = document.getElementById('companyToastBody');
      const toast = toastEl ? new bootstrap.Toast(toastEl, { delay: 2200 }) : null;

      function showToast(message, variant) {
        if (!toast || !toastEl || !toastBodyEl) return;
        toastEl.classList.remove('text-bg-success', 'text-bg-danger', 'text-bg-secondary');
        if (variant) toastEl.classList.add(variant);
        toastBodyEl.textContent = message;
        toast.show();
      }

      async function postDisplayUpdate(displayId, payload) {
        const res = await fetch(`/company/displays/${displayId}` , {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json',
            'Accept': 'application/json',
            'X-Requested-With': 'XMLHttpRequest'
          },
          body: JSON.stringify(payload)
        });
        const data = await res.json().catch(() => null);
        if (!res.ok || !data || !data.ok) {
          const msg = (data && data.error) ? data.error : 'Save failed';
          throw new Error(msg);
        }
        return data.display;
      }

      function refreshPreviewIframe(displayId) {
        const iframe = document.querySelector(`iframe[data-display-id="${displayId}"]`);
        if (!iframe || !iframe.src) return;
        try {
          const u = new URL(iframe.src, window.location.origin);
          // Ensure preview flag is present (and bust cache).
          u.searchParams.set('preview', '1');
          u.searchParams.set('_ts', String(Date.now()));
          iframe.src = u.toString();
        } catch (e) {
          // Fallback: naive cache buster
          const sep = iframe.src.includes('?') ? '&' : '?';
          iframe.src = `${iframe.src}${sep}_ts=${Date.now()}`;
        }
      }

      function parseIds(csv) {
        const s = (csv || '').trim();
        if (!s) return [];
        return s.split(',').map(x => parseInt(x, 10)).filter(n => Number.isFinite(n));
      }

      function computeActiveIdsFromDataset(btn) {
        // If display_playlist table has rows, we use that.
        // Otherwise fall back to legacy single playlist assignment.
        const active = parseIds(btn.dataset.activePlaylistIds);
        if (active.length) return active;
        const legacy = parseInt(btn.dataset.legacyPlaylistId || '', 10);
        return Number.isFinite(legacy) ? [legacy] : [];
      }

      function setActiveIdsOnButton(btn, ids) {
        btn.dataset.activePlaylistIds = (ids || []).join(',');
      }

      function playlistNameById(id) {
        const p = (ALL_PLAYLISTS || []).find(x => x.id === id);
        return p ? p.name : null;
      }

      function refreshActivePlaylistSummary(displayId, ids) {
        const el = document.querySelector(`.js-active-playlists-summary[data-display-id="${displayId}"]`);
        if (!el) return;
        if (!ids || ids.length === 0) {
          el.textContent = '(none)';
          return;
        }
        const names = ids.map(playlistNameById).filter(Boolean);
        el.textContent = names.length ? names.join(', ') : `${ids.length} selected`;
      }

      // Initialize summary labels on page load.
      document.querySelectorAll('.js-edit-playlists').forEach((btn) => {
        const displayId = btn.dataset.displayId;
        const ids = computeActiveIdsFromDataset(btn);
        refreshActivePlaylistSummary(displayId, ids);
      });

      async function postDisplayPlaylists(displayId, playlistIds) {
        const res = await fetch(`/company/displays/${displayId}/playlists`, {
          method: 'POST',
          headers: {
            'Content-Type': 'application/json',
            'Accept': 'application/json',
            'X-Requested-With': 'XMLHttpRequest'
          },
          body: JSON.stringify({ playlist_ids: playlistIds })
        });
        const data = await res.json().catch(() => null);
        if (!res.ok || !data || !data.ok) {
          const msg = (data && data.error) ? data.error : 'Save failed';
          throw new Error(msg);
        }
        return data.display;
      }

      // Description modal
      const modalEl = document.getElementById('editDescModal');
      const modal = modalEl ? new bootstrap.Modal(modalEl) : null;
      const titleEl = document.getElementById('editDescModalTitle');
      const inputEl = document.getElementById('editDescInput');
      const countEl = document.getElementById('editDescCount');
      const saveBtn = document.getElementById('editDescSaveBtn');

      let activeDisplayId = null;

      function updateCount() {
        if (!inputEl || !countEl) return;
        countEl.textContent = String((inputEl.value || '').length);
      }
      if (inputEl) inputEl.addEventListener('input', updateCount);

      document.querySelectorAll('.js-edit-desc').forEach((btn) => {
        btn.addEventListener('click', () => {
          activeDisplayId = btn.dataset.displayId;
          const displayName = btn.dataset.displayName || 'Display';
          const currentDesc = btn.dataset.currentDesc || '';
          if (titleEl) titleEl.textContent = `Edit description — ${displayName}`;
          if (inputEl) inputEl.value = currentDesc;
          updateCount();
          if (modal) modal.show();
        });
      });

      async function saveDescription() {
        if (!activeDisplayId || !inputEl) return;
        const desc = (inputEl.value || '').trim();
        saveBtn.disabled = true;
        try {
          const updated = await postDisplayUpdate(activeDisplayId, { description: desc });
          // Update visible description
          const descEl = document.querySelector(`.js-display-desc[data-display-id="${activeDisplayId}"]`);
          if (descEl) descEl.textContent = updated.description ? updated.description : '—';
          // Update button's stored value
          const btn = document.querySelector(`.js-edit-desc[data-display-id="${activeDisplayId}"]`);
          if (btn) btn.dataset.currentDesc = updated.description || '';
          showToast('Description saved', 'text-bg-success');
          if (modal) modal.hide();
        } catch (e) {
          showToast(e && e.message ? e.message : 'Save failed', 'text-bg-danger');
        } finally {
          saveBtn.disabled = false;
        }
      }
      if (saveBtn) {
        saveBtn.addEventListener('click', saveDescription);
      }
      if (modalEl) {
        modalEl.addEventListener('keydown', (e) => {
          if (e.key === 'Enter' && (e.ctrlKey || e.metaKey)) {
            e.preventDefault();
            saveDescription();
          }
        });
      }

      // Playlists modal
      const plModalEl = document.getElementById('editPlaylistsModal');
      const plModal = plModalEl ? new bootstrap.Modal(plModalEl) : null;
      const plTitleEl = document.getElementById('editPlaylistsModalTitle');
      const plListEl = document.getElementById('editPlaylistsList');
      const plHintEl = document.getElementById('editPlaylistsHint');
      const plSaveBtn = document.getElementById('editPlaylistsSaveBtn');
      let activePlDisplayId = null;
      let activePlButton = null;

      function renderPlaylistCheckboxes(selectedIds) {
        if (!plListEl) return;
        plListEl.innerHTML = '';
        const selectedSet = new Set(selectedIds || []);
        const pls = (ALL_PLAYLISTS || []).slice().sort((a,b) => (a.name || '').localeCompare(b.name || ''));
        if (pls.length === 0) {
          plListEl.innerHTML = '<div class="text-muted">No playlists available.</div>';
          return;
        }

        pls.forEach((p) => {
          const id = `pl_cb_${p.id}`;
          const row = document.createElement('div');
          row.className = 'form-check';

          const input = document.createElement('input');
          input.className = 'form-check-input';
          input.type = 'checkbox';
          input.id = id;
          input.value = String(p.id);
          input.checked = selectedSet.has(p.id);

          const label = document.createElement('label');
          label.className = 'form-check-label';
          label.setAttribute('for', id);
          label.textContent = p.name;

          row.appendChild(input);
          row.appendChild(label);
          plListEl.appendChild(row);
        });
      }

      function getSelectedPlaylistIdsFromModal() {
        if (!plListEl) return [];
        return Array.from(plListEl.querySelectorAll('input[type="checkbox"]'))
          .filter(cb => cb.checked)
          .map(cb => parseInt(cb.value, 10))
          .filter(n => Number.isFinite(n));
      }

      document.querySelectorAll('.js-edit-playlists').forEach((btn) => {
        btn.addEventListener('click', () => {
          activePlDisplayId = btn.dataset.displayId;
          activePlButton = btn;
          const displayName = btn.dataset.displayName || 'Display';
          if (plTitleEl) plTitleEl.textContent = `Select playlists — ${displayName}`;
          const selected = computeActiveIdsFromDataset(btn);
          renderPlaylistCheckboxes(selected);
          if (plHintEl) {
            plHintEl.textContent = selected.length ? `${selected.length} currently selected.` : 'No playlists currently selected.';
          }
          if (plModal) plModal.show();
        });
      });

      async function savePlaylists() {
        if (!activePlDisplayId || !activePlButton || !plSaveBtn) return;
        const ids = getSelectedPlaylistIdsFromModal();
        plSaveBtn.disabled = true;
        try {
          const updated = await postDisplayPlaylists(activePlDisplayId, ids);
          const newIds = (updated && updated.active_playlist_ids) ? updated.active_playlist_ids : ids;
          setActiveIdsOnButton(activePlButton, newIds);
          refreshActivePlaylistSummary(activePlDisplayId, newIds);
          showToast('Playlists saved', 'text-bg-success');
          refreshPreviewIframe(activePlDisplayId);
          if (plModal) plModal.hide();
        } catch (e) {
          showToast(e && e.message ? e.message : 'Save failed', 'text-bg-danger');
        } finally {
          plSaveBtn.disabled = false;
        }
      }

      if (plSaveBtn) {
        plSaveBtn.addEventListener('click', savePlaylists);
      }
    })();
  </script>
{% endblock %}