Add database configuration

along the lines of Sequelize options

.env.sample

@@ -25,3 +25,12 @@ SMTP_TRANSPORT_REQUIRE_TLS=
 
 # email address which will be the sender of the notifications and email verification messages
 EMAIL_SENDER=[email protected]
+
+# Database configuration
+DB_DIALECT=sqlite
+DB_STORAGE=
+DB_DATABASE=
+DB_USERNAME=
+DB_PASSWORD=
+DB_HOST=
+DB_PORT=

src/config/index.ts

@@ -1,5 +1,6 @@
 import 'dotenv/config'
 import SMTPTransport from 'nodemailer/lib/smtp-transport'
+import { Dialect, Options } from 'sequelize'
 
 // the defaults work for tests. you should define your own
 // either via .env file, or via environment variables directly (depends on your setup)
@@ -40,3 +41,14 @@ export const port: number = +(process.env.PORT ?? 3005)
 
 // email verification expiration in milliseconds (1 hour)
 export const emailVerificationExpiration = 3600 * 1000
+
+// configuration of database in form of sequelize options
+export const database: Options = {
+  dialect: (process.env.DB_DIALECT as Dialect) ?? 'sqlite',
+  storage: process.env.DB_STORAGE || undefined, // Path to the SQLite database file (default is memory)
+  database: process.env.DB_DATABASE || undefined,
+  username: process.env.DB_USERNAME || undefined,
+  password: process.env.DB_PASSWORD || undefined,
+  host: process.env.DB_HOST || undefined,
+  port: process.env.DB_PORT ? +process.env.DB_PORT : undefined,
+}

src/config/sequelize.ts

@@ -5,11 +5,11 @@ import {
   Model,
   Sequelize,
 } from 'sequelize'
+import { database } from '.'
 
 export const sequelize = new Sequelize({
-  dialect: 'sqlite',
-  // storage: 'database.sqlite', // Path to the SQLite database file (default is memory)
   logging: false,
+  ...database,
 })
 
 export class EmailVerification extends Model<