feat: implement audit logging system with service, controller, and interceptor to track user actions across core services

src/profile-fields/profile-fields.service.ts

@@ -2,10 +2,15 @@ import { Injectable, NotFoundException, ConflictException, BadRequestException }
 import { Prisma, FieldType } from '@prisma/client';
 import { PrismaService } from '../prisma';
 import { CreateFieldDto, UpdateFieldDto } from './dto';
+import { AuditService } from '../audit/audit.service';
+import { AuditAction } from '../audit/audit.constants';
 
 @Injectable()
 export class ProfileFieldsService {
-  constructor(private readonly prisma: PrismaService) {}
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly audit: AuditService,
+  ) {}
 
   /**
    * Generate a URL-friendly slug from the name
@@ -153,7 +158,7 @@ export class ProfileFieldsService {
       data.slug = newSlug;
     }
 
-    return this.prisma.profileField.update({
+    const updated = await this.prisma.profileField.update({
       where: { id },
       data,
       include: {
@@ -162,6 +167,15 @@ export class ProfileFieldsService {
         },
       },
     });
+
+    this.audit.log({
+      action: AuditAction.PROFILE_FIELD_UPDATE,
+      resourceType: 'ProfileField',
+      resourceId: id,
+      metadata: { sectionId: field.sectionId, slug: updated.slug, name: updated.name },
+    });
+
+    return updated;
   }
 
   /**
@@ -181,9 +195,18 @@ export class ProfileFieldsService {
       );
     }
 
-    return this.prisma.profileField.delete({
+    const deleted = await this.prisma.profileField.delete({
       where: { id },
     });
+
+    this.audit.log({
+      action: AuditAction.PROFILE_FIELD_UPDATE,
+      resourceType: 'ProfileField',
+      resourceId: id,
+      metadata: { action: 'delete' },
+    });
+
+    return deleted;
   }
 
   /**

src/profile-fields/profile-sections.service.ts

@@ -1,10 +1,15 @@
 import { Injectable, NotFoundException, ConflictException, ForbiddenException } from '@nestjs/common';
 import { PrismaService } from '../prisma';
 import { CreateSectionDto, UpdateSectionDto, AssignSectionDto, UpdateAssignmentDto } from './dto';
+import { AuditService } from '../audit/audit.service';
+import { AuditAction } from '../audit/audit.constants';
 
 @Injectable()
 export class ProfileSectionsService {
-  constructor(private readonly prisma: PrismaService) {}
+  constructor(
+    private readonly prisma: PrismaService,
+    private readonly audit: AuditService,
+  ) {}
 
   /**
    * Generate a URL-friendly slug from the name
@@ -127,7 +132,7 @@ export class ProfileSectionsService {
       data.slug = effectiveSlug;
     }
 
-    return this.prisma.profileSection.update({
+    const updated = await this.prisma.profileSection.update({
       where: { id },
       data,
       include: {
@@ -136,6 +141,15 @@ export class ProfileSectionsService {
         },
       },
     });
+
+    this.audit.log({
+      action: AuditAction.PROFILE_SECTION_UPDATE,
+      resourceType: 'ProfileSection',
+      resourceId: id,
+      metadata: { name: updated.name, slug: updated.slug },
+    });
+
+    return updated;
   }
 
   /**
@@ -158,9 +172,18 @@ export class ProfileSectionsService {
       );
     }
 
-    return this.prisma.profileSection.delete({
+    const deleted = await this.prisma.profileSection.delete({
       where: { id },
     });
+
+    this.audit.log({
+      action: AuditAction.PROFILE_SECTION_UPDATE,
+      resourceType: 'ProfileSection',
+      resourceId: id,
+      metadata: { action: 'delete', name: section.name },
+    });
+
+    return deleted;
   }
 
   /**