import { Database } from "bun:sqlite";
import { describe, expect, test } from "bun:test";
import { SCHEMA } from "../../db/schema";
import { enqueueAudioJob } from "../review";

function makeDb(): Database {
	const db = new Database(":memory:");
	for (const stmt of SCHEMA.split(";")) {
		const trimmed = stmt.trim();
		if (trimmed) db.run(trimmed);
	}
	db
		.prepare("INSERT INTO media_items (id, jellyfin_id, type, name, file_path) VALUES (?, ?, 'Movie', 'T', '/x.mkv')")
		.run(1, "jf-1");
	return db;
}

describe("enqueueAudioJob dedup", () => {
	test("inserts a job when none exists", () => {
		const db = makeDb();
		expect(enqueueAudioJob(db, 1, "ffmpeg a")).toBe(true);
		const { n } = db.prepare("SELECT COUNT(*) as n FROM jobs WHERE item_id = 1").get() as { n: number };
		expect(n).toBe(1);
	});

	test("no-ops when a pending job already exists", () => {
		const db = makeDb();
		enqueueAudioJob(db, 1, "ffmpeg a");
		expect(enqueueAudioJob(db, 1, "ffmpeg b")).toBe(false);
		expect(enqueueAudioJob(db, 1, "ffmpeg c")).toBe(false);
		const rows = db.prepare("SELECT command FROM jobs WHERE item_id = 1").all() as { command: string }[];
		expect(rows.length).toBe(1);
		expect(rows[0].command).toBe("ffmpeg a");
	});

	test("allows a new pending job once the previous one is done or errored", () => {
		const db = makeDb();
		enqueueAudioJob(db, 1, "ffmpeg a");
		db.prepare("UPDATE jobs SET status = 'done' WHERE item_id = 1").run();
		expect(enqueueAudioJob(db, 1, "ffmpeg b")).toBe(true);

		db.prepare("UPDATE jobs SET status = 'error' WHERE command = 'ffmpeg b'").run();
		expect(enqueueAudioJob(db, 1, "ffmpeg c")).toBe(true);

		const pending = db.prepare("SELECT COUNT(*) as n FROM jobs WHERE item_id = 1 AND status = 'pending'").get() as {
			n: number;
		};
		expect(pending.n).toBe(1);
	});
});