import { Sequelize } from "sequelize-typescript"
import { SequelizeStorage, Umzug } from "umzug"

export const sequelize = new Sequelize({
	dialect: "sqlite",
	database: "drift",
	storage:
		process.env.MEMORY_DB === "true"
			? ":memory:"
			: __dirname + "/../drift.sqlite",
	models: [__dirname + "/lib/models"],
	logging: true
})

const umzug = new Umzug({
	migrations: { glob: __dirname + "/migrations/*.ts" },
	context: sequelize.getQueryInterface(),
	storage: new SequelizeStorage({ sequelize }),
	logger: console
})

export type Migration = typeof umzug._types.migration

	; (async () => {
		// Checks migrations and run them if they are not already applied. To keep
		// track of the executed migrations, a table (and sequelize model) called SequelizeMeta
		// will be automatically created (if it doesn't exist already) and parsed.
		console.log("Checking migrations...")
		const migrations = await umzug.up()
		if (migrations.length > 0) {
			console.log("Migrations applied:")
			console.log(migrations)
		} else {
			console.log("No migrations applied.")
		}
	})()