(function() {
  'use strict';

  const token = localStorage.getItem('auth_token');
  if (!token) {
    window.location.href = '/';
    return;
  }

  function decodeJwt(token) {
    try {
      return JSON.parse(atob(token.split('.')[1]));
    } catch {
      return null;
    }
  }

  const decoded = decodeJwt(token);
  if (!decoded) {
    localStorage.removeItem('auth_token');
    window.location.href = '/';
    return;
  }

  // Check if admin
  if (!decoded.admin) {
    window.location.href = '/picks.html';
    return;
  }

  // Logout
  const logOffBtn = document.getElementById('log-off');
  if (logOffBtn) {
    logOffBtn.addEventListener('click', () => {
      localStorage.removeItem('auth_token');
      window.location.href = '/';
    });
  }

  let allPicks = [];
  let categories = [];
  let currentYear = new Date().getFullYear();

  function showAlert(message, type = 'info') {
    const container = document.getElementById('alert-container');
    if (!container) return;
    
    container.innerHTML = `
      <div class="alert alert-${type} alert-dismissible fade show" role="alert">
        ${message}
        <button type="button" class="btn-close" data-bs-dismiss="alert" aria-label="Close"></button>
      </div>
    `;
    
    setTimeout(() => {
      const alert = container.querySelector('.alert');
      if (alert) {
        const bsAlert = new bootstrap.Alert(alert);
        bsAlert.close();
      }
    }, 5000);
  }

  async function fetchAllPicks() {
    try {
      const res = await fetch(`/api/picks/all?year=${currentYear}`, {
        headers: { 'Authorization': `Bearer ${token}` }
      });
      
      if (!res.ok) {
        if (res.status === 401) {
          localStorage.removeItem('auth_token');
          window.location.href = '/';
          return;
        }
        if (res.status === 403) {
          window.location.href = '/picks.html';
          return;
        }
        throw new Error('Failed to fetch picks');
      }
      
      const data = await res.json();
      allPicks = data.picks || [];
      categories = data.categories || [];
      currentYear = data.year || currentYear;
      
      document.getElementById('current-year').textContent = currentYear;
      document.getElementById('users-count').textContent = allPicks.length;
      
      renderPicks();
    } catch (err) {
      console.error('Error fetching picks:', err);
      showAlert('Erreur lors du chargement des choix: ' + err.message, 'danger');
    }
  }

  function renderPicks() {
    const container = document.getElementById('picks-container');
    if (!container) return;
    
    if (allPicks.length === 0) {
      container.innerHTML = `
        <div class="alert alert-info">
          Aucun utilisateur n'a encore soumis ses choix pour l'année ${currentYear}.
        </div>
      `;
      return;
    }
    
    // Create a map of category info
    const categoryMap = new Map();
    categories.forEach(cat => {
      categoryMap.set(cat.categoryNumber, cat);
    });
    
    container.innerHTML = allPicks.map(pick => {
      const userName = pick.userId?.name || 'Utilisateur inconnu';
      const userEmail = pick.userId?.email || '';
      const submittedDate = pick.submittedAt ? new Date(pick.submittedAt).toLocaleString('fr-FR') : '—';
      
      // Create a map of picks by category
      const picksMap = new Map();
      pick.picks.forEach(p => {
        picksMap.set(p.categoryNumber, p.selectedNominee);
      });
      
      // Build picks list
      const picksList = categories.map(cat => {
        const selected = picksMap.get(cat.categoryNumber);
        if (!selected) return null;
        
        // Check if it's a winner (if winners are set)
        const nominee = cat.nominees.find(n => n.name === selected);
        const isWinner = nominee?.isWinner || false;
        
        return `
          <div class="pick-item ${isWinner ? 'correct-pick' : ''}">
            <div class="d-flex justify-content-between align-items-start">
              <div>
                <strong>${cat.categoryNumber}. ${cat.categoryName}</strong><br>
                <span class="text-muted">${selected}</span>
              </div>
              ${isWinner ? '<span class="badge bg-success">Gagnant</span>' : ''}
            </div>
          </div>
        `;
      }).filter(Boolean).join('');
      
      return `
        <div class="card user-picks-card shadow-sm">
          <div class="card-header">
            <div class="d-flex justify-content-between align-items-center">
              <div>
                <h5 class="mb-0">${userName}</h5>
                <small class="text-muted">${userEmail}</small>
              </div>
              <div class="text-end">
                <small class="text-muted">Soumis le: ${submittedDate}</small><br>
                <span class="badge bg-primary">${pick.picks.length} / ${categories.length} catégories</span>
              </div>
            </div>
          </div>
          <div class="card-body">
            ${picksList || '<div class="text-muted">Aucun choix enregistré</div>'}
          </div>
        </div>
      `;
    }).join('');
  }

  // Event listeners
  document.getElementById('refresh-picks')?.addEventListener('click', () => {
    fetchAllPicks();
    showAlert('Choix rafraîchis', 'info');
  });

  // Initial load
  fetchAllPicks();
})();