import * as SQLite from 'expo-sqlite';

export const MIGRATE_UP = {
    1: [
        `CREATE TABLE IF NOT EXISTS settings (
            host_language TEXT,
            libretranslate_base_url TEXT,
            ui_direction INTEGER
        )`,
    ],
    2: [
        `CREATE TABLE IF NOT EXISTS whisper_models (
            model TEXT PRIMARY KEY,
            bytes_done INTEGER,
            bytes_total INTEGER,
        )`,
    ]
}

export const MIGRATE_DOWN = {
    1: [
        `DROP TABLE IF EXISTS settings`
    ],
    2: [
        `DROP TABLE IF EXISTS whisper_models`
    ]
}

export async function getDb(migrationDirection : "up" | "down" = "up") {
    const db = await SQLite.openDatabaseAsync('translation_terrace');

    for (let [migration, statements] of Object.entries(MIGRATE_UP)) {
        for (let statement of statements) {
            console.log(statement)
            await db.runAsync(statement);
        }
    }

    return db;
}