import { Module } from '@nestjs/common';
import { APP_GUARD } from '@nestjs/core';
import { ConfigModule, ConfigService } from '@nestjs/config';
import { TypeOrmModule } from '@nestjs/typeorm';
import { ThrottlerModule, ThrottlerGuard } from '@nestjs/throttler';
import {
  Student, Room, Occupancy, RoomExpense, PersonalExpense,
  Bill, BillItem, User, OperationLog, Deposit, Classroom,
  Tenant, ClassroomRental, Permission, Role,
} from './entities';
import { AuthModule } from './auth/auth.module';
import { RbacModule } from './rbac/rbac.module';
import { StudentsModule } from './students/students.module';
import { PermissionGuard } from './auth/guards/permission.guard';
import { RoomsModule } from './rooms/rooms.module';
import { OccupanciesModule } from './occupancies/occupancies.module';
import { ExpensesModule } from './expenses/expenses.module';
import { BillsModule } from './bills/bills.module';
import { DashboardModule } from './dashboard/dashboard.module';
import { OperationLogsModule } from './operation-logs/operation-logs.module';
import { DepositsModule } from './deposits/deposits.module';
import { ClassroomsModule } from './classrooms/classrooms.module';
import { TenantsModule } from './tenants/tenants.module';
import { ClassroomRentalsModule } from './classroom-rentals/classroom-rentals.module';

@Module({
  imports: [
    ConfigModule.forRoot({ isGlobal: true }),
    ThrottlerModule.forRoot([{
      ttl: 60000,   // 60秒窗口
      limit: 100,   // 普通接口每分钟100次
    }]),
    TypeOrmModule.forRootAsync({
      imports: [ConfigModule],
      inject: [ConfigService],
      useFactory: (config: ConfigService): any => {
        const dbType = config.get('DB_TYPE', 'sqlite');
        const allEntities = [
          Student, Room, Occupancy, RoomExpense, PersonalExpense,
          Bill, BillItem, User, OperationLog, Deposit, Classroom,
          Tenant, ClassroomRental, Permission, Role,
        ];
        if (dbType === 'mysql') {
          return {
            type: 'mysql' as const,
            host: config.get('DB_HOST', 'localhost'),
            port: config.get<number>('DB_PORT', 3306),
            username: config.get('DB_USERNAME', 'root'),
            password: config.get('DB_PASSWORD', ''),
            database: config.get('DB_DATABASE', 'dorm_billing'),
            entities: allEntities,
            synchronize: true,
            charset: 'utf8mb4',
          };
        }
        return {
          type: 'better-sqlite3' as const,
          database: config.get('DB_DATABASE', 'dorm_billing.db'),
          entities: allEntities,
          synchronize: true,
        };
      },
    }),
    AuthModule,
    RbacModule,
    StudentsModule,
    RoomsModule,
    OccupanciesModule,
    ExpensesModule,
    BillsModule,
    DashboardModule,
    OperationLogsModule,
    DepositsModule,
    ClassroomsModule,
    TenantsModule,
    ClassroomRentalsModule,
  ],
  providers: [
    { provide: APP_GUARD, useClass: ThrottlerGuard },
    { provide: APP_GUARD, useClass: PermissionGuard },
  ],
})
export class AppModule {}