README + src/app.ts: change env vars

also set default parameters for databese and driver

README.md

@@ -45,6 +45,6 @@ POSTGRES_CONNECTION_URL=postgres://username:password@host:port/database_name
 ```
 - __RPC_HOST__ is used for the connection with the [flotte-user-management server](https://github.com/fLotte-meets-HWR-DB/flotte-user-management).
 - __NODE_ENV__ will not check authentication if set to development
-- __POSTGRES_CONNECTION_URL__ for connection with the postgres database
+- __DATABASE_URL__ for connection with the postgres database
 
 If the API server cannot connect to the [flotte-user-management server](https://github.com/fLotte-meets-HWR-DB/flotte-user-management) or the postgres data base. It will try to reconnect in an endless loop.

src/app.ts

@@ -62,9 +62,8 @@ require('dotenv').config();
 export const userAPI = new UserServerAPI(process.env.RPC_HOST);
 
 export function getConnectionOptions (): ConnectionOptions {
-    return {
+    const ret = {
-        // @ts-ignore
+        type: (!process.env.DATABASE_TYPE) ? 'postgres' : process.env.DATABASE_TYPE,
-        type: process.env.DATABASE_TYPE,
         url: process.env.DATABASE_URL,
         database: process.env.DATABASE_NAME,
         entities: [
@@ -89,6 +88,11 @@ export function getConnectionOptions (): ConnectionOptions {
         synchronize: true,
         logging: false
     };
+    if (ret.database === undefined) {
+        delete ret.database;
+    }
+    // @ts-ignore
+    return ret;
 }
 
 export async function getApp (connOptions: ConnectionOptions) {