import { migrate } from "drizzle-orm/node-postgres/migrator";
import { readFileSync } from "node:fs";
import { join, dirname } from "node:path";
import { fileURLToPath } from "node:url";
import { createClient } from "./index.js";
import {
  assertJournalMonotonic,
  formatJournalViolations,
  type JournalEntry,
} from "./journal-check.js";

const databaseUrl = process.env.DATABASE_URL;
if (!databaseUrl) {
  console.error("DATABASE_URL not set");
  process.exit(1);
}

// --- Pre-flight: refuse to run if the journal is non-monotonic. -----------
// Drizzle silently skips entries whose `when` is older than the previous
// entry's `when`. We've hit this twice now (0010/0011, then 0012/0013),
// each time the symptom was "Migrations applied." with no schema change
// and a 500 in production for the missing column. Catch it before we
// hand the journal to drizzle.
const __dirname = dirname(fileURLToPath(import.meta.url));
const journalPath = join(__dirname, "..", "migrations", "meta", "_journal.json");
const journal = JSON.parse(readFileSync(journalPath, "utf8")) as {
  entries: JournalEntry[];
};
const check = assertJournalMonotonic(journal.entries);
if (!check.ok) {
  console.error(formatJournalViolations(check));
  console.error(
    "\nRefusing to run drizzle migrate. Bump the offending `when` values in\n" +
      "_journal.json so they're strictly increasing in the same order as `idx`.",
  );
  process.exit(2);
}

const { db, pool } = createClient(databaseUrl);
console.log("Applying migrations...");
await migrate(db, { migrationsFolder: "./migrations" });
console.log("Migrations applied.");
await pool.end();