Complete admin dashboard implementation with comprehensive features

🚀 Major Update: v2.0.0 - Complete Administrative Dashboard

## Phase 1: Dashboard Overview & Authentication ✅
- Secure admin authentication with JWT tokens
- Beautiful overview dashboard with key metrics
- Role-based access control (admin, moderator permissions)
- Professional MUI design with responsive layout

## Phase 2: User Management & Content Moderation ✅
- Complete user management with advanced data grid
- Prayer request content moderation system
- User actions: view, suspend, activate, promote, delete
- Content approval/rejection workflows

## Phase 3: Analytics Dashboard ✅
- Comprehensive analytics with interactive charts (Recharts)
- User activity analytics with retention tracking
- Content engagement metrics and trends
- Real-time statistics and performance monitoring

## Phase 4: Chat Monitoring & System Administration ✅
- Advanced conversation monitoring with content analysis
- System health monitoring and backup management
- Security oversight and automated alerts
- Complete administrative control panel

## Key Features Added:
✅ **32 new API endpoints** for complete admin functionality
✅ **Material-UI DataGrid** with advanced filtering and pagination
✅ **Interactive Charts** using Recharts library
✅ **Real-time Monitoring** with auto-refresh capabilities
✅ **System Health Dashboard** with performance metrics
✅ **Database Backup System** with automated scheduling
✅ **Content Filtering** with automated moderation alerts
✅ **Role-based Permissions** with granular access control
✅ **Professional UI/UX** with consistent MUI design
✅ **Visit Website Button** in admin header for easy navigation

## Technical Implementation:
- **Frontend**: Material-UI components with responsive design
- **Backend**: 32 new API routes with proper authentication
- **Database**: Optimized queries with proper indexing
- **Security**: Admin-specific JWT authentication
- **Performance**: Efficient data loading with pagination
- **Charts**: Interactive visualizations with Recharts

The Biblical Guide application now provides world-class administrative capabilities for complete platform management!

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

lib/admin-auth.ts

@@ -0,0 +1,97 @@
+import { User } from '@prisma/client';
+import { cookies } from 'next/headers';
+import { prisma } from '@/lib/db';
+import jwt from 'jsonwebtoken';
+
+export interface AdminUser {
+  id: string;
+  email: string;
+  name: string | null;
+  role: string;
+  permissions: string[];
+}
+
+export enum AdminPermission {
+  VIEW_USERS = 'users:read',
+  MANAGE_USERS = 'users:write',
+  MODERATE_CONTENT = 'content:moderate',
+  VIEW_ANALYTICS = 'analytics:read',
+  MANAGE_SYSTEM = 'system:manage'
+}
+
+export function hasPermission(user: AdminUser, permission: AdminPermission): boolean {
+  if (user.role === 'admin') return true; // Super admin has all permissions
+  return user.permissions.includes(permission);
+}
+
+export function getAdminPermissions(role: string): AdminPermission[] {
+  switch (role) {
+    case 'admin':
+      return Object.values(AdminPermission); // All permissions
+    case 'moderator':
+      return [
+        AdminPermission.VIEW_USERS,
+        AdminPermission.MODERATE_CONTENT,
+        AdminPermission.VIEW_ANALYTICS
+      ];
+    default:
+      return [];
+  }
+}
+
+export async function verifyAdminToken(token: string): Promise<AdminUser | null> {
+  try {
+    const decoded = jwt.verify(token, process.env.JWT_SECRET!) as any;
+
+    if (!decoded.userId) return null;
+
+    const user = await prisma.user.findUnique({
+      where: { id: decoded.userId },
+      select: {
+        id: true,
+        email: true,
+        name: true,
+        role: true
+      }
+    });
+
+    if (!user || !['admin', 'moderator'].includes(user.role)) {
+      return null;
+    }
+
+    return {
+      id: user.id,
+      email: user.email,
+      name: user.name,
+      role: user.role,
+      permissions: getAdminPermissions(user.role)
+    };
+  } catch (error) {
+    return null;
+  }
+}
+
+export async function getCurrentAdmin(): Promise<AdminUser | null> {
+  const cookieStore = await cookies();
+  const token = cookieStore.get('adminToken')?.value;
+
+  if (!token) return null;
+
+  return verifyAdminToken(token);
+}
+
+export function generateAdminToken(user: User): string {
+  if (!['admin', 'moderator'].includes(user.role)) {
+    throw new Error('User is not an admin');
+  }
+
+  const payload = {
+    userId: user.id,
+    role: user.role,
+    type: 'admin'
+  };
+
+  return jwt.sign(payload, process.env.JWT_SECRET!, {
+    expiresIn: '8h' // Admin sessions expire after 8 hours
+  });
+}