default db sqlite

README.md

@@ -10,28 +10,44 @@ npm install
 ```
 
 ## Run Locally
-By default, the API looks for a locally running Postgres instance, which can be satisfied by running the following `docker` container:
+Start the API on [localhost:3000](http://localhost:3000)
+```bash
+npm run start:dev
+```
+Default port (`3000`) can be changed by setting the `PORT=xxxx` environment variable.
+
+### Database
+There are two databases that are supported:
+- Postgres (recommended)
+- SQLite (default for simplicity)
+
+For simplicity SQLite is used as the database in the `default`/`unconfigured` state.
+
+Using Postgres is pretty simple, by default the API is looking for a locally running instance, which can be satisfied by running the following `docker` container:
 ```bash
 docker run --name common-cents-db -e POSTGRES_USER=common-cents -e POSTGRES_PASSWORD=CommonCents_123! -p 5432:5432 -d postgres
 ```
 
-Alternatively, an external Postgres can be configured through an environment file placed in the root directory (`common-cents-api/.env`):
+To specify Postgres as the database, set the `DB_TYPE=postgres` environment variable.
+
+Alternatively, an external Postgres can be configured through additional environment variables. To simplify all of this, use an `env`file placed in the root directory (`common-cents-api/.env`):
 ```text
 # .env
-DB_SYNC=true # should be false for production environment
-DB_HOST=localhost
-DB_PORT=5432
-DB_USER=common-cents
-DB_PASS=CommonCents_123!
-DB_NAME=common-cents
+
+# Type 'sqlite' or 'postgres' (if not set sqlite will be used)
+DB_TYPE=sqlite
+
+# Sync should be false for production
+DB_SYNC=true
+
+# Postgres overrides
+PG_HOST=localhost
+PG_PORT=5432
+PG_USER=common-cents
+PG_PASS=CommonCents_123!
 ```
 
-Once the DB is configured/running, the API can be started:
-```bash
-npm run start:dev
-```
 
-Default port (`3000`) can also be changed in the `.env` file by setting `PORT=xxxx`.
 
 ## Bruno
 The included `bruno` folder contains a collection of calls to make it more convenient to interact with the API. Local calls assume the default NestJS port (`3000`) is being used.

package.json

@@ -29,6 +29,7 @@
     "pg": "^8.18.0",
     "reflect-metadata": "^0.2.2",
     "rxjs": "^7.8.1",
+    "sqlite3": "^5.1.7",
     "typeorm": "^0.3.28"
   },
   "devDependencies": {

src/app.module.ts

@@ -13,16 +13,26 @@ import { ConfigModule, ConfigService } from '@nestjs/config';
     TypeOrmModule.forRootAsync({
       imports: [ConfigModule],
       inject: [ConfigService],
-      useFactory: (configService: ConfigService) => ({
-        synchronize: configService.get<boolean>('DB_SYNC') ?? true,
-        type: 'postgres',
-        host: configService.get<string>('DB_HOST') ?? 'localhost',
-        port: configService.get<number>('DB_PORT') ?? 5432,
-        username: configService.get<string>('DB_USER') ?? 'common-cents',
-        password: configService.get<string>('DB_PASS') ?? 'CommonCents_123!',
-        database: configService.get<string>('DB_NAME') ?? 'common-cents',
-        autoLoadEntities: true
-      })
+      useFactory: (configService: ConfigService) => {
+        const type = configService.get<'sqlite' | 'postgres'>('DB_TYPE') ?? 'sqlite';
+        const synchronize = configService.get<boolean>('DB_SYNC') ?? true;
+        const autoLoadEntities = true;
+        const database = type === 'sqlite' ? 'common-cents.db' : 'common-cents';
+
+        const defaults = { type, database, synchronize, autoLoadEntities };
+
+        if (type === 'postgres') {
+          return {
+            ...defaults,
+            host: configService.get<string>('PG_HOST') ?? 'localhost',
+            port: configService.get<number>('PG_PORT') ?? 5432,
+            username: configService.get<string>('PG_USER') ?? 'common-cents',
+            password: configService.get<string>('PG_PASS') ?? 'CommonCents_123!'
+          };
+        }
+
+        return defaults;
+      }
     }),
     MerchantsModule,
     TagsModule,