refactor(db): simplify DB config to only DB_TYPE and DB_URL, default to sqlite, remove MySQL support and old env vars. Update .env.example accordingly.

Author: DevStarlight

.env.example

@@ -41,47 +41,15 @@ LIVEKIT_API_SECRET=
 # Configure your database connection here.
 # 
 # Supported databases:
-# - PostgreSQL (DB_TYPE=pg)
-# - MySQL (DB_TYPE=mysql2) 
-# - SQLite (fallback - no configuration needed)
-#
-# If database environment variables are not provided,
-# the application will automatically fall back to SQLite.
-
-# Database type - specify the database engine to use
-# Options: 'pg' (PostgreSQL), 'mysql2' (MySQL)
-DB_TYPE=pg
-
-# Database connection details
-DB_HOST=localhost
-DB_PORT=5432
-DB_USER=your_username
-DB_PASSWORD=your_password
-DB_NAME=your_database_name
-DB_SCHEMA=your_database_schema
-
-# ==============================================
-# STORAGE CONFIGURATION
-# ==============================================
-# Configure your file storage system here.
-# 
-# Supported storage types:
-# - Local file system (default - no configuration needed)
-# - AWS S3 (requires S3 configuration below)
-#
-# If STORAGE_TYPE is provided, AWS S3 storage will be used.
-# If STORAGE_TYPE is empty or not set, local file storage will be used.
+# - SQLite (default - no configuration needed)
+# - PostgreSQL (DB_TYPE=pg with DB_URL)
 # 
-# AWS credentials can be provided via environment variables below,
-# or through AWS CLI configuration, IAM roles, or instance profiles.
+# If DB_TYPE and DB_URL are not provided or empty,
+# the application will automatically use SQLite in the world folder.
+
+# Database type - leave empty for SQLite, or 'pg' for PostgreSQL
+DB_TYPE=
 
-# AWS S3 storage configuration (only required when using S3)
-# To use AWS S3 storage, set STORAGE_TYPE and other S3 variables below
-STORAGE_TYPE=
-S3_BUCKET_NAME=bucket-name
-AWS_ACCESS_KEY_ID=access-key-id
-AWS_SECRET_ACCESS_KEY=secret-key-id
-S3_REGION=eu-west-1
-S3_ASSETS_PREFIX=
-S3_COLLECTIONS_PREFIX=
-S3_STORAGE_PREFIX=
+# Database connection URL - leave empty for SQLite
+# For PostgreSQL, use format: postgres://username:password@host:port/database?schema=public
+DB_URL=

src/server/db.js

@@ -4,37 +4,26 @@ import moment from 'moment'
 let db
 
 function getDBConfig(sqlitePath) {
-  const { DB_HOST, DB_PORT, DB_USER, DB_PASSWORD, DB_NAME, DB_TYPE, DB_SCHEMA } = process.env;
+  const { DB_TYPE = '', DB_URL = '' } = process.env;
 
-  const config = {
-    client: DB_TYPE || 'better-sqlite3',
+  if (!DB_TYPE && !DB_URL) {
+    // Default: sqlite in world folder
+    return {
+      client: 'better-sqlite3',
+      connection: { filename: sqlitePath },
+      useNullAsDefault: true,
+    };
   }
 
-  if (DB_TYPE === 'pg' && DB_HOST && DB_PORT && DB_USER && DB_PASSWORD && DB_NAME && DB_SCHEMA) {
-    config.connection = {
-      host: DB_HOST,
-      port: parseInt(DB_PORT),
-      user: DB_USER,
-      database: DB_NAME,
-      password: DB_PASSWORD,
-      ...(DB_TYPE === 'mysql2' && {
-        charset: 'utf8mb4',
-        timezone: 'UTC'
-      })
-    }
-    config.searchPath = [DB_SCHEMA]
-    config.pool = {
-      min: 2,
-      max: 10
-    }
-  } else {
-    config.connection = {
-      filename: sqlitePath,
-    }
-    config.useNullAsDefault = true
+  if (DB_TYPE === 'pg' && DB_URL) {
+    return {
+      client: 'pg',
+      connection: DB_URL,
+      pool: { min: 2, max: 10 },
+    };
   }
 
-  return config;
+  throw new Error('Unsupported or incomplete DB configuration. Only sqlite (default) and postgres (pg) via DB_TYPE/DB_URL are supported.');
 }
 
 export async function getDB(sqlitePath) {