feat: adds postgres repo

Author: anthonydmays

lib/javascript/fullstack_demo/.env.example.postgres

@@ -0,0 +1,5 @@
+NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=Your Next Public Clerk Publishable Key here
+CLERK_SECRET_KEY=Your Clerk Secret Key here
+DB_TYPE=postgres
+NEXT_PUBLIC_API_URL=http://localhost:3000
+DATABASE_URL=Your Postgres database URL

lib/javascript/fullstack_demo/package-lock.json

@@ -12,6 +12,7 @@
   },
   "dependencies": {
     "@clerk/nextjs": "^6.9.2",
+    "@prisma/client": "^6.1.0",
     "@upstash/redis": "^1.34.3",
     "lowdb": "^7.0.1",
     "lucide-react": "^0.468.0",
@@ -32,6 +33,7 @@
     "jsdom": "^25.0.1",
     "postcss": "^8",
     "prettier": "^3.4.2",
+    "prisma": "^6.1.0",
     "tailwindcss": "^3.4.16",
     "typescript": "^5",
     "vite-tsconfig-paths": "^5.1.4",

lib/javascript/fullstack_demo/package.json

@@ -0,0 +1,19 @@
+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+/// This table has subclasses and requires additional setup for migrations. Visit https://pris.ly/d/table-inheritance for more info.
+/// This model contains row level security and requires additional setup for migrations. Visit https://pris.ly/d/row-level-security for more info.
+model Todos {
+  id         BigInt   @id @default(autoincrement())
+  user_id    String   @db.VarChar
+  text       String   @default("") @db.VarChar
+  completed  Boolean  @default(false)
+  created_at DateTime @default(now()) @db.Timestamptz(6)
+  updated_at DateTime @default(now()) @db.Timestamp(6)
+}

lib/javascript/fullstack_demo/prisma/schema.prisma

@@ -1,12 +1,16 @@
 export type { TodoRepository } from './todo-repository';
 
 import { JsonTodoRespository } from './json-todo-repository';
+import { PostgresTodoRepository } from './postgres-todo-repository';
 import { RedisTodoRepository } from './redis-todo-repository';
 import { TodoRepository } from './todo-repository';
 
 export function createTodoRepository(): TodoRepository {
   if (process.env.DB_TYPE?.toUpperCase() === 'REDIS') {
     return new RedisTodoRepository();
   }
+  if (process.env.DB_TYPE?.toUpperCase() === 'POSTGRES') {
+    return new PostgresTodoRepository();
+  }
   return new JsonTodoRespository();
 }

lib/javascript/fullstack_demo/src/repositories/index.ts

@@ -0,0 +1,48 @@
+import { Todo } from '@/models';
+import { PrismaClient } from '@prisma/client';
+import { TodoRepository } from './todo-repository';
+
+const client = new PrismaClient();
+
+export class PostgresTodoRepository implements TodoRepository {
+  async getAll(userId: string): Promise<Todo[]> {
+    const dbTodos = await client.todos.findMany({ where: { user_id: userId } });
+    return dbTodos.map((todo) => ({
+      id: Number(todo.id),
+      text: todo.text,
+      completed: todo.completed,
+    }));
+  }
+
+  async create(todo: Todo, userId: string): Promise<number> {
+    const dbTodo = await client.todos.create({
+      data: {
+        text: todo.text,
+        completed: todo.completed,
+        user_id: userId,
+      },
+    });
+    return Number(dbTodo.id);
+  }
+
+  async patch(todo: Partial<Todo>, userId: string): Promise<Todo | undefined> {
+    const dbTodo = await client.todos.update({
+      where: { id: todo.id },
+      data: {
+        text: todo.text,
+        completed: todo.completed,
+      },
+    });
+    return dbTodo
+      ? {
+          id: Number(dbTodo.id),
+          text: dbTodo.text,
+          completed: dbTodo.completed,
+        }
+      : undefined;
+  }
+
+  async delete(id: number, userId: string): Promise<void> {
+    await client.todos.delete({ where: { id } });
+  }
+}