import SQLite from "react-native-sqlite-storage"

SQLite.enablePromise(true);

export const MIGRATE_UP = {
    1: [
        `CREATE TABLE IF NOT EXIST settings (
            host_language TEXT,
            libretranslate_base_url TEXT,
            ui_direction INTEGER
        )`,
    ]
}

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

export async function getDb(migrationDirection : "up" | "down" = "up") {
    const db = await SQLite.openDatabase({
        name: "translation_terrace",
    });

    for (let [migration, statements] of Object.entries(MIGRATE_UP)) {
        for (let statement of statements) {
            await db.transaction(async (tx) => {
                await tx.executeSql(statement)
            });
        }
    }

    return db;
}