Add CreateGroupDto and integrate DbModule with GroupsService

Introduced CreateGroupDto to enforce validation rules for group creation. Integrated DbModule into GroupsService and added a getGroupsByName method for database queries. Placeholder methods for group creation, deletion and file retrieval are also defined.

apps/backend/src/app/groups/groups.controller.ts

@@ -1,4 +1,5 @@
 import {
+	Body,
 	Controller,
 	DefaultValuePipe,
 	Delete,
@@ -6,10 +7,11 @@ import {
 	Param,
 	ParseIntPipe,
 	Post,
-	Query,
+	Query
-} from "@nestjs/common";
+} from '@nestjs/common';
 import { ISearchQuery } from "apps/backend/src/app/groups/groups.types";
 import { GroupsService } from "./groups.service";
+import { CreateGroupDto } from 'apps/backend/src/app/groups/groups.dto';
 
 @Controller("groups")
 export class GroupsController {
@@ -22,12 +24,14 @@ export class GroupsController {
 		@Query("offset", new DefaultValuePipe(0), ParseIntPipe) offset: number,
 		@Query("search", new DefaultValuePipe("")) search: string,
 	) {
-		const query = { limit, offset, search };
+		//TODO add service method
 	}
 
 	//POST a new group
 	@Post("new")
-	async newGroup() {}
+	async newGroup(@Body() dto : CreateGroupDto) {
+
+	}
 
 	//DELETE a group
 	@Delete(":groupId")

apps/backend/src/app/groups/groups.dto.ts

@@ -0,0 +1,8 @@
+import { IsString, MinLength, MaxLength } from 'class-validator';
+
+export class CreateGroupDto {
+  @IsString()
+  @MinLength(4)
+  @MaxLength(64)
+  groupName: string;
+}

apps/backend/src/app/groups/groups.module.ts

@@ -1,8 +1,10 @@
 import { Module } from "@nestjs/common";
 import { GroupsController } from "./groups.controller";
 import { GroupsService } from "./groups.service";
+import { DbModule } from '../db/db.module';
 
 @Module({
+	imports: [DbModule],
 	controllers: [GroupsController],
 	providers: [GroupsService],
 })

apps/backend/src/app/groups/groups.service.ts

@@ -1,4 +1,30 @@
 import { Injectable } from "@nestjs/common";
+import { DbService } from 'apps/backend/src/app/db/db.service';
+import { FilesGroupTable } from 'apps/backend/src/app/db/schema';
+import { ilike } from 'drizzle-orm';
 
 @Injectable()
-export class GroupsService {}
+export class GroupsService {
+  constructor(private readonly database: DbService) {}
+
+  //TODO a method to fetch groups in the database by a specific search with limit, offset and a search field (can be blank)
+  async getGroupsByName(limit: number, offset: number, search: string) {
+    const result = await this.database.use()
+      .select()
+      .from(FilesGroupTable)
+      .where(ilike(FilesGroupTable.groupName, search))
+      .limit(limit)
+      .offset(offset)
+      .prepare("getGroupsByName")
+      .execute()
+    console.log(`Found ${result.length} groups for search :\n > "${search}"`)
+    return result;
+  }
+
+  //TODO The method to create a group
+
+
+  //TODO a method to delete a group and place the associated file at a null group reference
+
+  //TODO a method to get the files of a group in the database by a specific search with limit, offset and a search field (can be blank)
+}