Add endpoint to check email and project existence

libs/common/src/constants/controller-route.ts

@@ -733,6 +733,10 @@ export class ControllerRoute {
 
       public static readonly CREATE_USER_INVITATION_DESCRIPTION =
         'This endpoint creates an invitation for a user to assign to role and spaces.';
+      public static readonly CHECK_EMAIL_SUMMARY = 'Check email';
+
+      public static readonly CHECK_EMAIL_DESCRIPTION =
+        'This endpoint checks if an email already exists and have a project in the system.';
     };
   };
   static PERMISSION = class {

src/invite-user/controllers/invite-user.controller.ts

@@ -6,6 +6,8 @@ import { ControllerRoute } from '@app/common/constants/controller-route';
 import { BaseResponseDto } from '@app/common/dto/base.response.dto';
 import { PermissionsGuard } from 'src/guards/permissions.guard';
 import { Permissions } from 'src/decorators/permissions.decorator';
+import { JwtAuthGuard } from '@app/common/guards/jwt.auth.guard';
+import { CheckEmailDto } from '../dtos/check-email.dto';
 
 @ApiTags('Invite User Module')
 @Controller({
@@ -34,4 +36,19 @@ export class InviteUserController {
       user.role.type,
     );
   }
+
+  @ApiBearerAuth()
+  @UseGuards(JwtAuthGuard)
+  @Post('check-email')
+  @ApiOperation({
+    summary: ControllerRoute.INVITE_USER.ACTIONS.CHECK_EMAIL_SUMMARY,
+    description: ControllerRoute.INVITE_USER.ACTIONS.CHECK_EMAIL_DESCRIPTION,
+  })
+  async checkEmailAndProject(
+    @Body() addUserInvitationDto: CheckEmailDto,
+  ): Promise<BaseResponseDto> {
+    return await this.inviteUserService.checkEmailAndProject(
+      addUserInvitationDto,
+    );
+  }
 }

src/invite-user/dtos/add.invite-user.dto.ts

@@ -61,6 +61,14 @@ export class AddUserInvitationDto {
   @IsString()
   @IsNotEmpty()
   public roleUuid: string;
+  @ApiProperty({
+    description: 'The project uuid of the user',
+    example: 'd290f1ee-6c54-4b01-90e6-d701748f0851',
+    required: true,
+  })
+  @IsString()
+  @IsNotEmpty()
+  public projectUuid: string;
   @ApiProperty({
     description: 'The array of space UUIDs (at least one required)',
     example: ['b5f3c9d2-58b7-4377-b3f7-60acb711d5d9'],

src/invite-user/dtos/check-email.dto.ts

@@ -0,0 +1,16 @@
+import { ApiProperty } from '@nestjs/swagger';
+import { IsEmail, IsNotEmpty } from 'class-validator';
+
+export class CheckEmailDto {
+  @ApiProperty({
+    description: 'The email of the user',
+    example: 'OqM9A@example.com',
+    required: true,
+  })
+  @IsEmail()
+  @IsNotEmpty()
+  email: string;
+  constructor(dto: Partial<CheckEmailDto>) {
+    Object.assign(this, dto);
+  }
+}

src/invite-user/services/invite-user.service.ts

@@ -12,11 +12,14 @@ import {
   InviteUserRepository,
   InviteUserSpaceRepository,
 } from '@app/common/modules/Invite-user/repositiories';
+import { CheckEmailDto } from '../dtos/check-email.dto';
+import { UserRepository } from '@app/common/modules/user/repositories';
 
 @Injectable()
 export class InviteUserService {
   constructor(
     private readonly inviteUserRepository: InviteUserRepository,
+    private readonly userRepository: UserRepository,
     private readonly inviteUserSpaceRepository: InviteUserSpaceRepository,
     private readonly dataSource: DataSource,
   ) {}
@@ -33,6 +36,7 @@ export class InviteUserService {
       phoneNumber,
       roleUuid,
       spaceUuids,
+      projectUuid,
     } = dto;
 
     const invitationCode = generateRandomString(6);
@@ -67,6 +71,7 @@ export class InviteUserService {
         status: UserStatusEnum.INVITED,
         invitationCode,
         invitedBy: roleType,
+        project: { uuid: projectUuid },
       });
 
       const invitedUser = await queryRunner.manager.save(inviteUser);
@@ -105,4 +110,46 @@ export class InviteUserService {
       await queryRunner.release();
     }
   }
+  async checkEmailAndProject(dto: CheckEmailDto): Promise<BaseResponseDto> {
+    const { email } = dto;
+
+    try {
+      const user = await this.userRepository.findOne({
+        where: { email },
+        relations: ['project'],
+      });
+
+      if (user?.project) {
+        throw new HttpException(
+          'This email already has a project',
+          HttpStatus.BAD_REQUEST,
+        );
+      }
+
+      const invitedUser = await this.inviteUserRepository.findOne({
+        where: { email },
+        relations: ['project'],
+      });
+
+      if (invitedUser?.project) {
+        throw new HttpException(
+          'This email already has a project',
+          HttpStatus.BAD_REQUEST,
+        );
+      }
+
+      return new SuccessResponseDto({
+        statusCode: HttpStatus.OK,
+        success: true,
+        message: 'Valid email',
+      });
+    } catch (error) {
+      console.error('Error checking email and project:', error);
+      throw new HttpException(
+        error.message ||
+          'An unexpected error occurred while checking the email',
+        error.status || HttpStatus.INTERNAL_SERVER_ERROR,
+      );
+    }
+  }
 }