feat(backend): adding project relationship with user and chat

backend/src/chat/chat.model.ts

@@ -1,8 +1,15 @@
 import { Field, ObjectType, ID, registerEnumType } from '@nestjs/graphql';
-import { Entity, PrimaryGeneratedColumn, Column, ManyToOne } from 'typeorm';
+import {
+  Entity,
+  PrimaryGeneratedColumn,
+  Column,
+  ManyToOne,
+  JoinColumn,
+} from 'typeorm';
 import { Message } from 'src/chat/message.model';
 import { SystemBaseModel } from 'src/system-base-model/system-base.model';
 import { User } from 'src/user/user.model';
+import { Project } from 'src/project/project.model';
 
 export enum StreamStatus {
   STREAMING = 'streaming',
@@ -41,7 +48,23 @@ export class Chat extends SystemBaseModel {
   })
   messages: Message[];
 
-  @ManyToOne(() => User, (user) => user.chats)
+  @Field(() => ID)
+  @Column()
+  projectId: string;
+
+  @ManyToOne(() => Project, (project) => project.chats, {
+    onDelete: 'CASCADE',
+    nullable: false,
+  })
+  @JoinColumn({ name: 'project_id' })
+  @Field(() => Project)
+  project: Project;
+
+  @ManyToOne(() => User, (user) => user.chats, {
+    onDelete: 'CASCADE',
+    nullable: false,
+  })
+  @JoinColumn({ name: 'user_id' })
   @Field(() => User)
   user: User;
 }

backend/src/project/dto/project.input.ts

@@ -1,16 +1,26 @@
 // DTOs for Project APIs
 import { InputType, Field, ID } from '@nestjs/graphql';
+import { IsNotEmpty, IsString, IsUUID, IsOptional } from 'class-validator';
 
 @InputType()
 export class UpsertProjectInput {
   @Field()
+  @IsNotEmpty()
+  @IsString()
   projectName: string;
 
+  @Field()
+  @IsNotEmpty()
+  @IsString()
   path: string;
 
   @Field(() => ID, { nullable: true })
-  projectId: string;
+  @IsOptional()
+  @IsUUID()
+  projectId?: string;
 
   @Field(() => [String], { nullable: true })
-  projectPackages: string[];
+  @IsOptional()
+  @IsString({ each: true })
+  projectPackages?: string[];
 }

backend/src/project/project.model.ts

@@ -10,12 +10,13 @@ import {
 } from 'typeorm';
 import { User } from 'src/user/user.model';
 import { ProjectPackages } from './project-packages.model';
+import { Chat } from 'src/chat/chat.model';
 
 @Entity()
 @ObjectType()
 export class Project extends SystemBaseModel {
   @Field(() => ID)
-  @PrimaryGeneratedColumn()
+  @PrimaryGeneratedColumn('uuid')
   id: string;
 
   @Field()
@@ -28,10 +29,14 @@ export class Project extends SystemBaseModel {
 
   @Field(() => ID)
   @Column()
-  userId: number;
+  userId: string;
 
-  @ManyToOne(() => User)
+  @ManyToOne(() => User, (user) => user.projects, {
+    onDelete: 'CASCADE',
+    nullable: false,
+  })
   @JoinColumn({ name: 'user_id' })
+  @Field(() => User)
   user: User;
 
   @Field(() => [ProjectPackages], { nullable: true })
@@ -41,4 +46,11 @@ export class Project extends SystemBaseModel {
     { cascade: true },
   )
   projectPackages: ProjectPackages[];
+
+  @Field(() => [Chat], { nullable: true })
+  @OneToMany(() => Chat, (chat) => chat.project, {
+    cascade: true,
+    eager: false,
+  })
+  chats: Chat[];
 }

backend/src/project/project.resolver.ts

@@ -1,35 +1,39 @@
 // GraphQL Resolvers for Project APIs
-import { Args, Mutation, Query, Resolver } from '@nestjs/graphql';
+import {
+  Args,
+  Mutation,
+  Query,
+  Resolver,
+  ResolveField,
+  Parent,
+} from '@nestjs/graphql';
 import { ProjectService } from './project.service';
 import { Project } from './project.model';
 import { UpsertProjectInput } from './dto/project.input';
 import { UseGuards } from '@nestjs/common';
 import { ProjectGuard } from '../guard/project.guard';
 import { GetUserIdFromToken } from '../decorator/get-auth-token.decorator';
+import { User } from '../user/user.model';
+import { Chat } from '../chat/chat.model';
 
 @Resolver(() => Project)
 export class ProjectsResolver {
   constructor(private readonly projectsService: ProjectService) {}
 
   @Query(() => [Project])
-  async getUserProjects(
-    @GetUserIdFromToken() userId: number,
-  ): Promise<Project[]> {
+  async getProjects(@GetUserIdFromToken() userId: string): Promise<Project[]> {
     return this.projectsService.getProjectsByUser(userId);
   }
 
-  // @GetAuthToken() token: string
   @Query(() => Project)
   @UseGuards(ProjectGuard)
-  async getProjectDetails(
-    @Args('projectId') projectId: string,
-  ): Promise<Project> {
+  async getProject(@Args('projectId') projectId: string): Promise<Project> {
     return this.projectsService.getProjectById(projectId);
   }
 
   @Mutation(() => Project)
   async upsertProject(
-    @GetUserIdFromToken() userId: number,
+    @GetUserIdFromToken() userId: string,
     @Args('upsertProjectInput') upsertProjectInput: UpsertProjectInput,
   ): Promise<Project> {
     return this.projectsService.upsertProject(upsertProjectInput, userId);
@@ -58,4 +62,16 @@ export class ProjectsResolver {
   ): Promise<boolean> {
     return this.projectsService.removePackageFromProject(projectId, packageId);
   }
+
+  @ResolveField('user', () => User)
+  async getUser(@Parent() project: Project): Promise<User> {
+    const { user } = await this.projectsService.getProjectById(project.id);
+    return user;
+  }
+
+  @ResolveField('chats', () => [Chat])
+  async getChats(@Parent() project: Project): Promise<Chat[]> {
+    const { chats } = await this.projectsService.getProjectById(project.id);
+    return chats?.filter((chat) => !chat.isDeleted) || [];
+  }
 }

backend/src/project/project.service.ts

@@ -19,34 +19,44 @@ export class ProjectService {
     private projectPackagesRepository: Repository<ProjectPackages>,
   ) {}
 
-  async getProjectsByUser(userId: number): Promise<Project[]> {
+  async getProjectsByUser(userId: string): Promise<Project[]> {
     const projects = await this.projectsRepository.find({
-      where: { userId: userId, isDeleted: false },
-      relations: ['projectPackages'],
+      where: { userId, isDeleted: false },
+      relations: ['projectPackages', 'chats'],
     });
+
     if (projects && projects.length > 0) {
       projects.forEach((project) => {
+        // Filter deleted packages
         project.projectPackages = project.projectPackages.filter(
           (pkg) => !pkg.isDeleted,
         );
+        // Filter deleted chats
+        if (project.chats) {
+          project.chats = project.chats.filter((chat) => !chat.isDeleted);
+        }
       });
     }
 
     if (!projects || projects.length === 0) {
-      throw new NotFoundException(`User with ID ${userId} have no project.`);
+      throw new NotFoundException(`User with ID ${userId} has no projects.`);
     }
     return projects;
   }
 
   async getProjectById(projectId: string): Promise<Project> {
     const project = await this.projectsRepository.findOne({
       where: { id: projectId, isDeleted: false },
-      relations: ['projectPackages'],
+      relations: ['projectPackages', 'chats', 'user'],
     });
+
     if (project) {
       project.projectPackages = project.projectPackages.filter(
         (pkg) => !pkg.isDeleted,
       );
+      if (project.chats) {
+        project.chats = project.chats.filter((chat) => !chat.isDeleted);
+      }
     }
 
     if (!project) {
@@ -57,29 +67,29 @@ export class ProjectService {
 
   async upsertProject(
     upsertProjectInput: UpsertProjectInput,
-    user_id: number,
+    userId: string,
   ): Promise<Project> {
     const { projectId, projectName, path, projectPackages } =
       upsertProjectInput;
 
     let project;
     if (projectId) {
-      // only extract the project match the user id
       project = await this.projectsRepository.findOne({
-        where: { id: projectId, isDeleted: false, userId: user_id },
+        where: { id: projectId, isDeleted: false, userId },
+        relations: ['projectPackages', 'chats'],
       });
     }
 
     if (project) {
       // Update existing project
-      if (projectName) project.project_name = projectName;
+      if (projectName) project.projectName = projectName;
       if (path) project.path = path;
     } else {
       // Create a new project if it does not exist
       project = this.projectsRepository.create({
-        projectName: projectName,
+        projectName,
         path,
-        userId: user_id,
+        userId,
       });
       project = await this.projectsRepository.save(project);
     }
@@ -95,17 +105,22 @@ export class ProjectService {
       await this.projectPackagesRepository.save(newPackages);
     }
 
-    // Return the updated or created project with all packages
+    // Return the updated or created project with all relations
     return await this.projectsRepository
       .findOne({
         where: { id: project.id, isDeleted: false },
-        relations: ['projectPackages'],
+        relations: ['projectPackages', 'chats', 'user'],
       })
       .then((project) => {
-        if (project && project.projectPackages) {
-          project.projectPackages = project.projectPackages.filter(
-            (pkg) => !pkg.isDeleted,
-          );
+        if (project) {
+          if (project.projectPackages) {
+            project.projectPackages = project.projectPackages.filter(
+              (pkg) => !pkg.isDeleted,
+            );
+          }
+          if (project.chats) {
+            project.chats = project.chats.filter((chat) => !chat.isDeleted);
+          }
         }
         return project;
       });
@@ -114,27 +129,30 @@ export class ProjectService {
   async deleteProject(projectId: string): Promise<boolean> {
     const project = await this.projectsRepository.findOne({
       where: { id: projectId },
+      relations: ['projectPackages', 'chats'],
     });
+
     if (!project) {
       throw new NotFoundException(`Project with ID ${projectId} not found.`);
     }
 
     try {
-      // Perform a soft delete by updating is_active and is_deleted fields
+      // Soft delete the project
       project.isActive = false;
       project.isDeleted = true;
       await this.projectsRepository.save(project);
 
-      // Perform a soft delete for related project packages
-      const projectPackages = project.projectPackages;
-      if (projectPackages && projectPackages.length > 0) {
-        for (const pkg of projectPackages) {
+      // Soft delete related project packages
+      if (project.projectPackages?.length > 0) {
+        for (const pkg of project.projectPackages) {
           pkg.isActive = false;
           pkg.isDeleted = true;
           await this.projectPackagesRepository.save(pkg);
         }
       }
 
+      // Note: Related chats will be automatically handled by the CASCADE setting
+
       return true;
     } catch (error) {
       throw new InternalServerErrorException('Error deleting the project.');
@@ -148,6 +166,7 @@ export class ProjectService {
     const packageToRemove = await this.projectPackagesRepository.findOne({
       where: { id: packageId, project: { id: projectId } },
     });
+
     if (!packageToRemove) {
       throw new NotFoundException(
         `Package with ID ${packageId} not found for Project ID ${projectId}`,
@@ -167,8 +186,9 @@ export class ProjectService {
   ): Promise<boolean> {
     const project = await this.projectsRepository.findOne({
       where: { id: projectId, isDeleted: false },
-      relations: ['projectPackages'],
+      relations: ['projectPackages', 'chats'],
     });
+
     if (!project) {
       throw new NotFoundException(`Project with ID ${projectId} not found.`);
     }

backend/src/user/user.model.ts

@@ -3,6 +3,7 @@ import { IsEmail } from 'class-validator';
 import { Role } from 'src/auth/role/role.model';
 import { SystemBaseModel } from 'src/system-base-model/system-base.model';
 import { Chat } from 'src/chat/chat.model';
+import { Project } from 'src/project/project.model';
 import {
   Entity,
   PrimaryGeneratedColumn,
@@ -15,7 +16,7 @@ import {
 @Entity()
 @ObjectType()
 export class User extends SystemBaseModel {
-  @PrimaryGeneratedColumn()
+  @PrimaryGeneratedColumn('uuid')
   id: string;
 
   @Field()
@@ -32,12 +33,20 @@ export class User extends SystemBaseModel {
 
   @Field(() => [Chat])
   @OneToMany(() => Chat, (chat) => chat.user, {
-    cascade: true, // Automatically save related chats
-    lazy: true, // Load chats only when accessed
-    onDelete: 'CASCADE', // Delete chats when user is deleted
+    cascade: true,
+    lazy: true,
+    onDelete: 'CASCADE',
   })
   chats: Chat[];
 
+  @Field(() => [Project])
+  @OneToMany(() => Project, (project) => project.user, {
+    cascade: true,
+    lazy: true,
+    onDelete: 'CASCADE',
+  })
+  projects: Project[];
+
   @ManyToMany(() => Role)
   @JoinTable({
     name: 'user_roles',