import { dirname, join } from "node:path";
import { fileURLToPath } from "node:url";
import { migrate } from "drizzle-orm/node-postgres/migrator";
import { createDb } from "./client.js";

const HERE = dirname(fileURLToPath(import.meta.url));
export const MIGRATIONS_DIR = join(HERE, "..", "migrations");

/** Apply all pending Drizzle migrations to the target database. */
export async function runMigrations(connectionString: string, migrationsFolder = MIGRATIONS_DIR): Promise<void> {
  const { db, pool } = createDb(connectionString);
  try {
    await migrate(db, { migrationsFolder });
  } finally {
    await pool.end();
  }
}

async function main(): Promise<void> {
  const url = process.env.DATABASE_URL;
  if (!url) {
    console.error("DATABASE_URL is required");
    process.exit(1);
  }
  await runMigrations(url);
  console.log(JSON.stringify({ event: "migrations_applied" }));
}

if (import.meta.url === `file://${process.argv[1]}`) {
  main().catch((e) => {
    console.error(e);
    process.exit(1);
  });
}