/**
 * Token Status UI - Standalone
 * Displays token statuses, expiration times, last 4 digits
 * No external imports - uses window.JobInfoAuth from global scope
 */

class TokenStatusUI {
  constructor() {
    this.container = null;
    this.refreshInterval = null;
  }

  /**
   * Create and show token status UI
   */
  create(containerId = 'app') {
    console.log('[TokenUI] create() called with container:', containerId);
    
    this.container = document.getElementById(containerId);
    if (!this.container) {
      console.error('[TokenUI] Container not found:', containerId);
      return;
    }

    this.render();
    
    // Refresh UI every second to update expiration countdown
    this.refreshInterval = window.setInterval(() => {
      this.render();
    }, 1000);

    console.log('[TokenUI] UI created and refresh interval started');
  }

  /**
   * Render token status UI
   */
  render() {
    if (!this.container) return;

    const state = this.getState();
    
    const pbStatus = state.pbUser.active ? '✓ Active' : '✗ Inactive';
    const pbStatusColor = state.pbUser.active ? '#10b981' : '#ef4444';
    
    const graphStatus = state.graphUser.active ? '✓ Active' : '○ Not Required';
    const graphStatusColor = state.graphUser.active ? '#10b981' : '#6b7280';

    this.container.innerHTML = `
      <div style="
        min-height: 100vh;
        background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 20px;
        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
      ">
        <div style="
          background: white;
          border-radius: 12px;
          box-shadow: 0 10px 40px rgba(0,0,0,0.2);
          padding: 40px;
          max-width: 600px;
          width: 100%;
        ">
          <!-- Header -->
          <div style="margin-bottom: 30px;">
            <h1 style="font-size: 28px; font-weight: bold; color: #1f2937; margin: 0 0 10px 0;">
              Job Info Auth
            </h1>
            <p style="color: #6b7280; margin: 0; font-size: 14px;">
              User: <strong>${state.userDisplayName}</strong>
            </p>
          </div>

          <!-- PocketBase User Token -->
          <div style="
            margin-bottom: 24px;
            padding: 20px;
            background: #f9fafb;
            border-radius: 8px;
            border-left: 4px solid ${pbStatusColor};
          ">
            <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px;">
              <h2 style="font-size: 14px; font-weight: 600; color: #1f2937; margin: 0;">
                PocketBase User Token
              </h2>
              <span style="color: ${pbStatusColor}; font-weight: 600; font-size: 13px;">
                ${pbStatus}
              </span>
            </div>
            <p style="color: #6b7280; font-size: 12px; margin: 8px 0; font-family: monospace;">
              Token: ...${state.pbUser.lastFour}
            </p>
            <p style="color: #6b7280; font-size: 12px; margin: 8px 0;">
              Expires in: <strong style="color: #1f2937;">${state.pbUser.expiresIn}</strong>
            </p>
          </div>

          <!-- Graph User Token -->
          <div style="
            margin-bottom: 24px;
            padding: 20px;
            background: #f9fafb;
            border-radius: 8px;
            border-left: 4px solid ${graphStatusColor};
          ">
            <div style="display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px;">
              <h2 style="font-size: 14px; font-weight: 600; color: #1f2937; margin: 0;">
                Microsoft Graph Token
              </h2>
              <span style="color: ${graphStatusColor}; font-weight: 600; font-size: 13px;">
                ${graphStatus}
              </span>
            </div>
            ${state.graphUser.active ? `
              <p style="color: #6b7280; font-size: 12px; margin: 8px 0; font-family: monospace;">
                Token: ...${state.graphUser.lastFour}
              </p>
              <p style="color: #6b7280; font-size: 12px; margin: 8px 0;">
                Expires in: <strong style="color: #1f2937;">${state.graphUser.expiresIn}</strong>
              </p>
            ` : `
              <p style="color: #6b7280; font-size: 12px; margin: 8px 0;">
                Graph token is optional. Login proceeded without it.
              </p>
            `}
          </div>

          <!-- Actions -->
          <div style="display: flex; gap: 10px;">
            <button onclick="window.JobInfoAuth.logout(); location.reload();" style="
              flex: 1;
              padding: 12px;
              background: #ef4444;
              color: white;
              border: none;
              border-radius: 6px;
              font-weight: 600;
              cursor: pointer;
              font-size: 14px;
            ">
              Logout
            </button>
            <button onclick="location.reload();" style="
              flex: 1;
              padding: 12px;
              background: #3b82f6;
              color: white;
              border: none;
              border-radius: 6px;
              font-weight: 600;
              cursor: pointer;
              font-size: 14px;
            ">
              Refresh
            </button>
          </div>

          <!-- Debug Info -->
          <div style="
            margin-top: 30px;
            padding: 15px;
            background: #f0f9ff;
            border-radius: 6px;
            border: 1px solid #bfdbfe;
            font-size: 11px;
            color: #1e40af;
            font-family: monospace;
            word-break: break-all;
          ">
            <strong>Debug Info:</strong><br>
            pb-user: ${state.pbUser.active ? 'active' : 'inactive'} | graph-user: ${state.graphUser.active ? 'active' : 'inactive'}
          </div>
        </div>
      </div>
    `;
  }

  /**
   * Get current token state
   */
  getState() {
    if (!window.JobInfoAuth) {
      return {
        pbUser: { active: false, lastFour: 'none', expiresIn: 'unknown' },
        graphUser: { active: false, lastFour: 'none', expiresIn: 'unknown' },
        userDisplayName: 'Unknown'
      };
    }

    const auth = window.JobInfoAuth;
    const authState = auth.getState();

    const calculateTimeLeft = (expiresAt) => {
      if (!expiresAt) return 'unknown';
      const now = Date.now();
      const diff = expiresAt - now;
      if (diff < 0) return 'expired';
      
      const hours = Math.floor(diff / (1000 * 60 * 60));
      const minutes = Math.floor((diff % (1000 * 60 * 60)) / (1000 * 60));
      
      if (hours > 0) return `${hours}h ${minutes}m`;
      return `${minutes}m`;
    };

    return {
      pbUser: {
        active: !!authState['pb-user'],
        lastFour: authState['pb-user']?.lastFourDigits || 'none',
        expiresIn: calculateTimeLeft(authState['pb-user']?.expiresAt),
        expiresAt: authState['pb-user']?.expiresAt
      },
      graphUser: {
        active: !!authState['graph-user'],
        lastFour: authState['graph-user']?.lastFourDigits || 'none',
        expiresIn: calculateTimeLeft(authState['graph-user']?.expiresAt),
        expiresAt: authState['graph-user']?.expiresAt
      },
      userDisplayName: authState.userDisplayName || 'Unknown'
    };
  }

  /**
   * Destroy UI and cleanup
   */
  destroy() {
    if (this.refreshInterval) {
      clearInterval(this.refreshInterval);
    }
  }
}

// Create singleton instance
const TokenUI = new TokenStatusUI();

// Expose globally
if (typeof window !== 'undefined') {
  window.TokenUI = TokenUI;
}