feat: implement inventory, product brand, product category, product info, product, role, store, user, and vendor modules with CRUD operations

- Added Create and Update DTOs for Inventory, Product Brand, Product Category, Product Info, Product, Role, Store, User, and Vendor.
- Implemented InventoriesController, ProductBrandsController, ProductCategoriesController, ProductInfoController, ProductsController, RolesController, StoresController, UsersController, and VendorsController with respective CRUD endpoints.
- Developed InventoriesService, ProductBrandsService, ProductCategoriesService, ProductInfoService, ProductsService, RolesService, StoresService, UsersService, and VendorsService to handle business logic.
- Created PrismaModule and PrismaService for database interactions using Prisma with MariaDB adapter.
- Configured application with Swagger for API documentation and added global interceptors for logging and response mapping.
- Established e2e testing setup with Jest for the application.

src/prisma/prisma-config.service.ts

@@ -0,0 +1,65 @@
+/**
+ * Prisma 7 config helper.
+ *
+ * Purpose: centralize PrismaClient options for Nest and tests.
+ * This reads environment variables (e.g. PRISMA_ACCELERATE_URL, PRISMA_CLIENT_LOG)
+ * and returns a valid options object to pass to `new PrismaClient(options)`.
+ *
+ * Keep this file small and dependency-free so it can be used in scripts.
+ */
+
+const pkg = require('@prisma/adapter-mariadb')
+
+export function getPrismaOptions(): any {
+  const options: any = {}
+
+  // Logging: allow configuring via PRISMA_CLIENT_LOG (comma separated levels)
+  // default to query/info/warn/error during development
+  const envLog = process.env.PRISMA_CLIENT_LOG
+  if (envLog && envLog.trim() !== '') {
+    const levels = envLog
+      .split(',')
+      .map(s => s.trim())
+      .filter(Boolean)
+    options.log = levels.map((level: string) => ({ emit: 'stdout', level }))
+  } else {
+    options.log = [
+      { emit: 'stdout', level: 'query' },
+      { emit: 'stdout', level: 'info' },
+      { emit: 'stdout', level: 'warn' },
+      { emit: 'stdout', level: 'error' },
+    ]
+  }
+
+  // Prisma Accelerate: only add when provided and non-empty (Prisma 7 validation requires non-empty string)
+  const accel = process.env.PRISMA_ACCELERATE_URL
+  if (accel && accel.trim() !== '') {
+    options.accelerateUrl = accel
+  }
+
+  try {
+    // dynamic require so this file doesn't hard-depend on adapters at compile time
+    // eslint-disable-next-line @typescript-eslint/no-var-requires
+    if (pkg) {
+      // Try common export patterns: default function, module function, or factory named createAdapter/getAdapter
+      if (typeof pkg === 'function') {
+        options.adapter = pkg()
+      } else if (pkg.default && typeof pkg.default === 'function') {
+        options.adapter = pkg.default()
+      } else if (pkg.createAdapter && typeof pkg.createAdapter === 'function') {
+        options.adapter = pkg.createAdapter()
+      } else if (pkg.getAdapter && typeof pkg.getAdapter === 'function') {
+        options.adapter = pkg.getAdapter()
+      }
+    }
+  } catch (e) {
+    // package not found or failed to initialize; try next candidate
+  }
+
+  // Error format (optional)
+  if (process.env.PRISMA_ERROR_FORMAT) {
+    options.errorFormat = process.env.PRISMA_ERROR_FORMAT as any
+  }
+
+  return options
+}

src/prisma/prisma.module.ts

@@ -0,0 +1,9 @@
+import { Global, Module } from '@nestjs/common'
+import { PrismaService } from './prisma.service'
+
+@Global()
+@Module({
+  providers: [PrismaService],
+  exports: [PrismaService],
+})
+export class PrismaModule {}

src/prisma/prisma.service.ts

@@ -0,0 +1,33 @@
+import { Injectable, OnModuleDestroy, OnModuleInit } from '@nestjs/common'
+import { PrismaMariaDb } from '@prisma/adapter-mariadb'
+import 'dotenv/config'
+import { env } from 'prisma/config'
+import { PrismaClient } from '../generated/prisma/client'
+
+@Injectable()
+export class PrismaService extends PrismaClient implements OnModuleInit, OnModuleDestroy {
+  constructor() {
+    const adapter = new PrismaMariaDb({
+      host: env('DATABASE_HOST'),
+      user: env('DATABASE_USER'),
+      password: env('DATABASE_PASSWORD'),
+      database: env('DATABASE_NAME'),
+      connectionLimit: 5,
+    })
+    super({ adapter })
+  }
+
+  async onModuleInit() {
+    await this.$connect()
+  }
+
+  async onModuleDestroy() {
+    await this.$disconnect()
+  }
+
+  // async enableShutdownHooks(app: any) {
+  //   this.$on('beforeExit', async () => {
+  //     await app.close()
+  //   })
+  // }
+}