feat: add config-manager

packages/config-manager/.env.sample

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+# For prisma client
+DATABASE_URL="postgresql://johndoe:randompassword@localhost:7654/mydb?schema=public"
+
+## For local setup
+DATABASE_PORT=7654
+DATABASE_USERNAME="johndoe" 
+DATABASE_PASSWORD="randompassword"
+DATABASE_NAME="mydb"

packages/config-manager/.gitignore

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+.env

packages/config-manager/api-doc.md

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+### Get Configuration by ID
+
+- **URL**: `/configs/:id`
+- **Method**: `GET`
+- **Description**: Retrieves a specific configuration by its ID.
+- **Parameters**:
+  - `id` (path parameter): The ID of the configuration to retrieve.
+- **Response**: The configuration object with the specified ID, including its history.
+- **cURL**
+  - ```curl http://localhost:3000/configs/1```
+
+### Create Configuration
+
+- **URL**: `/configs`
+- **Method**: `POST`
+- **Description**: Creates a new configuration.
+- **Request Body**:
+  - `name`: The name of the configuration.
+  - `data`: The JSON data of the configuration.
+- **Response**: The newly created configuration object, including its history.
+- **cURL**
+  - ```curl -X POST -H "Content-Type: application/json" -d '{"name":"New Config","data":{"key":"value"}}' http://localhost:3000/configs```
+
+### Update Configuration
+
+- **URL**: `/configs/:id`
+- **Method**: `PUT`
+- **Description**: Updates an existing configuration by its ID.
+- **Parameters**:
+  - `id` (path parameter): The ID of the configuration to update.
+- **Request Body**:
+  - `data`: The updated JSON data of the configuration.
+- **Response**: The updated configuration object, including its history.
+- **cURL**
+  - ```curl -X PUT -H "Content-Type: application/json" -d '{"data":{"updatedKey":"updatedValue"}}' http://localhost:3000/configs/1```
+
+### Get Configuration History
+
+- **URL**: `/configs/:id/history`
+- **Method**: `GET`
+- **Description**: Retrieves the history of changes for a specific configuration by its ID.
+- **Parameters**:
+  - `id` (path parameter): The ID of the configuration to retrieve history for.
+- **Response**: An array of history entries for the specified configuration, sorted by timestamp in descending order.
+- **cURL**
+  - ```curl http://localhost:3000/configs/:id/history```

packages/config-manager/docker-compose.yml

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+version: '3.9'
+
+services:
+  postgres:
+    image: postgres:15.3-alpine
+    ports:
+      - ${DATABASE_PORT}:5432
+    volumes:
+      - ./.data/db:/var/lib/postgresql/data
+    environment:
+      POSTGRES_USER: ${DATABASE_USERNAME}
+      POSTGRES_PASSWORD: ${DATABASE_PASSWORD}
+      POSTGRES_DB: ${DATABASE_NAME}
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U postgres']
+      interval: 5s
+      timeout: 5s
+      retries: 5
+    networks:
+      - default

packages/config-manager/index.js

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+const express = require('express');
+const { PrismaClient } = require('@prisma/client');
+
+const prisma = new PrismaClient();
+const app = express();
+app.use(express.json());
+
+app.get('/configs/:id', async (req, res) => {
+  const { id } = req.params;
+  const config = await prisma.config.findUnique({
+    where: { id: parseInt(id) },
+    include: { history: true }
+  });
+  res.json(config);
+});
+
+app.post('/configs', async (req, res) => {
+  const { name, data } = req.body;
+  const newConfig = await prisma.config.create({
+    data: {
+      name,
+      data,
+      history: { create: { data } }
+    },
+    include: { history: true }
+  });
+  res.json(newConfig);
+});
+
+app.put('/configs/:id', async (req, res) => {
+  const { id } = req.params;
+  const { data } = req.body;
+  const updatedConfig = await prisma.config.update({
+    where: { id: parseInt(id) },
+    data: {
+      data,
+      history: { create: { data } } 
+    },
+    include: { history: true }
+  });
+  res.json(updatedConfig);
+});
+
+app.get('/configs/:id/history', async (req, res) => {
+  const { id } = req.params;
+  const history = await prisma.configHistory.findMany({
+    where: { configId: parseInt(id) },
+    orderBy: { timestamp: 'desc' }
+  });
+  res.json(history);
+});
+
+const PORT = process.env.PORT || 3000;
+app.listen(PORT, () => {
+  console.log(`Server running on port ${PORT}`);
+});

packages/config-manager/package.json

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+{
+  "name": "@stencil/configmanager",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.ts",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@prisma/client": "^5.13.0",
+    "express": "^4.19.2",
+    "prisma": "^5.13.0"
+  },
+  "devDependencies": {
+    "@types/node": "^20.12.7",
+    "typescript": "^5.4.5"
+  }
+}

packages/config-manager/prisma/migrations/20240430050238_001_setup/migration.sql

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+-- CreateTable
+CREATE TABLE "Config" (
+    "id" SERIAL NOT NULL,
+    "name" TEXT NOT NULL,
+    "data" JSONB NOT NULL,
+
+    CONSTRAINT "Config_pkey" PRIMARY KEY ("id")
+);
+
+-- CreateTable
+CREATE TABLE "ConfigHistory" (
+    "id" SERIAL NOT NULL,
+    "configId" INTEGER NOT NULL,
+    "data" JSONB NOT NULL,
+    "timestamp" TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+
+    CONSTRAINT "ConfigHistory_pkey" PRIMARY KEY ("id")
+);
+
+-- AddForeignKey
+ALTER TABLE "ConfigHistory" ADD CONSTRAINT "ConfigHistory_configId_fkey" FOREIGN KEY ("configId") REFERENCES "Config"("id") ON DELETE RESTRICT ON UPDATE CASCADE;

packages/config-manager/prisma/migrations/migration_lock.toml

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+# Please do not edit this file manually
+# It should be added in your version-control system (i.e. Git)
+provider = "postgresql"

packages/config-manager/prisma/schema.prisma

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+generator client {
+  provider = "prisma-client-js"
+}
+
+datasource db {
+  provider = "postgresql"
+  url      = env("DATABASE_URL")
+}
+
+model Config {
+  id      Int             @id @default(autoincrement())
+  name    String
+  data    Json
+  history ConfigHistory[]
+}
+
+model ConfigHistory {
+  id        Int      @id @default(autoincrement())
+  configId  Int
+  config    Config   @relation(fields: [configId], references: [id])
+  data      Json
+  timestamp DateTime @default(now())
+}