implemented the audit log module

backend/src/app.module.ts

@@ -1,25 +1,38 @@
-import { Module } from "@nestjs/common";
-import { ConfigModule, ConfigService } from "@nestjs/config";
-import { TypeOrmModule } from "@nestjs/typeorm";
-import { ScheduleModule } from "@nestjs/schedule";
-import { AppController } from "./app.controller";
-import { AppService } from "./app.service";
-import { UsersModule } from "./users/users.module";
-import { AuthModule } from "./auth/auth.module";
-import { ApiKeysModule } from "./api-keys/api-keys.module";
-import { OrganizationUnitsModule } from "./organization-units/organization-units.module";
-import { ChangeLogModule } from "./change-log/change-log.module";
-import { BarcodeModule } from "./barcode/barcode.module";
-import { ComplianceModule } from "./compliance/compliance.module";
-import { MobileDevicesModule } from "./mobile-devices/mobile-devices.module";
-import { PolicyDocumentsModule } from "./policy-documents/policy-documents.module";
-import { DeviceHealthModule } from "./device-health/device-health.module";
-import { QRCodeModule } from "./QR-Code/qrcode.module";
-import { NotificationsModule } from "./notifications/notifications.module";
-import { StatusHistoryModule } from "./status-history/status-history.module";
-import { DisposalRegistryModule } from "./disposal-registry/disposal-registry.module";
-import { VendorDirectoryModule } from "./vendor-directory/vendor-directory.module";
-import { WebhooksModule } from "./webhooks/webhooks.module";
+import { Module } from '@nestjs/common';
+import { ConfigModule, ConfigService } from '@nestjs/config';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { ScheduleModule } from '@nestjs/schedule';
+import { AppController } from './app.controller';
+import { AppService } from './app.service';
+import { UsersModule } from './users/users.module';
+import { AuthModule } from './auth/auth.module';
+// import { ApiKeysModule } from "./api-keys/api-keys.module";
+// import { OrganizationUnitsModule } from "./organization-units/organization-units.module";
+// import { ChangeLogModule } from "./change-log/change-log.module";
+// import { BarcodeModule } from "./barcode/barcode.module";
+// import { ComplianceModule } from "./compliance/compliance.module";
+// import { MobileDevicesModule } from "./mobile-devices/mobile-devices.module";
+// import { PolicyDocumentsModule } from "./policy-documents/policy-documents.module";
+// import { DeviceHealthModule } from "./device-health/device-health.module";
+// import { QRCodeModule } from "./QR-Code/qrcode.module";
+// import { NotificationsModule } from "./notifications/notifications.module";
+// import { StatusHistoryModule } from "./status-history/status-history.module";
+// import { DisposalRegistryModule } from "./disposal-registry/disposal-registry.module";
+// import { VendorDirectoryModule } from "./vendor-directory/vendor-directory.module";
+import { WebhooksModule } from './webhooks/webhooks.module';
+import { AuditLogsModule } from './audit-logs/audit-logs.module';
+import { AuditLoggingInterceptor } from './audit-logs/audit-logging.interceptor';
+import { APP_INTERCEPTOR } from '@nestjs/core';
+import { AssetCategory } from './asset-categories/asset-category.entity';
+import { Department } from './departments/department.entity';
+import { User } from './users/entities/user.entity';
+import { FileUpload } from './file-uploads/entities/file-upload.entity';
+import { Asset } from './assets/entities/assest.entity';
+import { Supplier } from './suppliers/entities/supplier.entity';
+import { AssetCategoriesModule } from './asset-categories/asset-categories.module';
+import { DepartmentsModule } from './departments/departments.module';
+import { AssetTransfersModule } from './asset-transfers/asset-transfers.module';
+import { SearchModule } from './search/search.module';
 
 @Module({
   imports: [
@@ -54,22 +67,29 @@ import { WebhooksModule } from "./webhooks/webhooks.module";
     UsersModule,
     SearchModule,
     AuthModule,
-    ApiKeysModule,
-    OrganizationUnitsModule,
-    ChangeLogModule,
-    BarcodeModule,
-    ComplianceModule,
-    MobileDevicesModule,
-    PolicyDocumentsModule,
-    DeviceHealthModule,
-    QRCodeModule,
-    NotificationsModule,
-    StatusHistoryModule,
-    DisposalRegistryModule,
-    VendorDirectoryModule,
+    // ApiKeysModule,
+    // OrganizationUnitsModule,
+    // ChangeLogModule,
+    // BarcodeModule,
+    // ComplianceModule,
+    // MobileDevicesModule,
+    // PolicyDocumentsModule,
+    // DeviceHealthModule,
+    // QRCodeModule,
+    // NotificationsModule,
+    // StatusHistoryModule,
+    // DisposalRegistryModule,
+    // VendorDirectoryModule,
     WebhooksModule,
+    AuditLogsModule,
   ],
   controllers: [AppController],
-  providers: [AppService],
+  providers: [
+    {
+      provide: APP_INTERCEPTOR,
+      useClass: AuditLoggingInterceptor,
+    },
+    AppService,
+  ],
 })
 export class AppModule {}

backend/src/audit-logs/audit-logging.interceptor.ts

@@ -0,0 +1,54 @@
+import {
+  Injectable,
+  NestInterceptor,
+  ExecutionContext,
+  CallHandler,
+} from '@nestjs/common';
+import { Observable } from 'rxjs';
+import { tap } from 'rxjs/operators';
+import { AuditLogsService } from './audit-logs.service';
+
+@Injectable()
+export class AuditLoggingInterceptor implements NestInterceptor {
+  constructor(private readonly auditLogsService: AuditLogsService) {}
+
+  intercept(context: ExecutionContext, next: CallHandler): Observable<any> {
+    const req = context.switchToHttp().getRequest();
+
+    const user = req.user; // Assumes authentication middleware adds user info
+    const userId = user ? user.id : null;
+
+    const method = req.method;
+    const url = req.url;
+
+    // Customize this logic to map HTTP verbs to action names:
+    const actionMap = {
+      GET: 'Read',
+      POST: 'Create',
+      PATCH: 'Update',
+      PUT: 'Replace',
+      DELETE: 'Delete',
+    };
+    const action = actionMap[method] || method;
+
+    // Extract entity info from URL, e.g., /branches, /assets/123
+    const entity = url.split('/')[1] || 'unknown';
+
+    return next.handle().pipe(
+      tap(async () => {
+        // Optionally, you can add more metadata like request params or body here
+        await this.auditLogsService.createLog({
+          action,
+          entity,
+          userId,
+          timestamp: new Date(),
+          metadata: {
+            params: req.params,
+            query: req.query,
+            body: req.body,
+          },
+        });
+      }),
+    );
+  }
+}

backend/src/audit-logs/audit-logs.module.ts

@@ -0,0 +1,11 @@
+import { Module } from '@nestjs/common';
+import { TypeOrmModule } from '@nestjs/typeorm';
+import { AuditLog } from './entities/audit-log.entity';
+import { AuditLogsService } from './audit-logs.service';
+
+@Module({
+  imports: [TypeOrmModule.forFeature([AuditLog])],
+  providers: [AuditLogsService],
+  exports: [AuditLogsService],
+})
+export class AuditLogsModule {}

backend/src/audit-logs/audit-logs.service.ts

@@ -0,0 +1,17 @@
+import { Injectable } from '@nestjs/common';
+import { InjectRepository } from '@nestjs/typeorm';
+import { Repository } from 'typeorm';
+import { AuditLog } from './entities/audit-log.entity';
+
+@Injectable()
+export class AuditLogsService {
+  constructor(
+    @InjectRepository(AuditLog)
+    private auditLogRepository: Repository<AuditLog>,
+  ) {}
+
+  async createLog(data: Partial<AuditLog>): Promise<AuditLog> {
+    const log = this.auditLogRepository.create(data);
+    return this.auditLogRepository.save(log);
+  }
+}

backend/src/audit-logs/entities/audit-log.entity.ts

@@ -0,0 +1,27 @@
+import {
+  Entity,
+  Column,
+  PrimaryGeneratedColumn,
+  CreateDateColumn,
+} from 'typeorm';
+
+@Entity('audit_logs')
+export class AuditLog {
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @Column()
+  action: string;
+
+  @Column()
+  entity: string;
+
+  @Column({ nullable: true })
+  userId: number;
+
+  @CreateDateColumn()
+  timestamp: Date;
+
+  @Column({ type: 'jsonb', nullable: true })
+  metadata?: Record<string, any>; // Optional JSON metadata about the action
+}