import { mkdtemp, rm } from 'node:fs/promises';
import { tmpdir } from 'node:os';
import { join } from 'node:path';
import Fastify from 'fastify';
import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest';

vi.mock('../src/services/ytDlpRunner.js', async (importOriginal) => {
	const actual = await importOriginal<typeof import('../src/services/ytDlpRunner.js')>();
	return { ...actual, runYtDlp: vi.fn(() => new Promise(() => {})) };
});

import { createQueueRoutes } from '../src/routes/queue.js';

const validUrl = 'https://www.youtube.com/watch?v=dQw4w9WgXcQ';

let tmpDir: string;

beforeEach(async () => {
	tmpDir = await mkdtemp(join(tmpdir(), 'ytdl-queue-route-test-'));
});

afterEach(async () => {
	await rm(tmpDir, { recursive: true, force: true });
});

describe('routes de file d’attente', () => {
	it('POST /api/queue ajoute un élément valide et le retourne', async () => {
		const app = Fastify();
		await app.register(createQueueRoutes({ tmpDir, maxConcurrentDownloads: 2 }));

		const response = await app.inject({
			method: 'POST',
			url: '/api/queue',
			payload: { url: validUrl, mode: 'audio', audioFormat: 'opus' },
		});

		expect(response.statusCode).toBe(201);
		const body = response.json();
		expect(body.item).toMatchObject({
			url: validUrl,
			mode: { kind: 'audio', format: 'opus' },
			status: expect.stringMatching(/pending|running/),
		});
	});

	it('POST /api/queue renvoie 400 pour une URL non-YouTube', async () => {
		const app = Fastify();
		await app.register(createQueueRoutes({ tmpDir, maxConcurrentDownloads: 2 }));

		const response = await app.inject({
			method: 'POST',
			url: '/api/queue',
			payload: { url: 'https://evil.com/x', mode: 'video' },
		});

		expect(response.statusCode).toBe(400);
	});

	it('POST /api/queue renvoie 400 pour un mode invalide (validation de schéma)', async () => {
		const app = Fastify();
		await app.register(createQueueRoutes({ tmpDir, maxConcurrentDownloads: 2 }));

		const response = await app.inject({
			method: 'POST',
			url: '/api/queue',
			payload: { url: validUrl, mode: 'video-4k-ultra' },
		});

		expect(response.statusCode).toBe(400);
	});

	it('GET /api/queue liste les éléments ajoutés', async () => {
		const app = Fastify();
		await app.register(createQueueRoutes({ tmpDir, maxConcurrentDownloads: 2 }));

		await app.inject({
			method: 'POST',
			url: '/api/queue',
			payload: { url: validUrl, mode: 'thumbnail' },
		});
		const response = await app.inject({ method: 'GET', url: '/api/queue' });

		expect(response.statusCode).toBe(200);
		expect(response.json().items).toHaveLength(1);
	});

	it('DELETE /api/queue/:id renvoie 404 pour un identifiant inconnu', async () => {
		const app = Fastify();
		await app.register(createQueueRoutes({ tmpDir, maxConcurrentDownloads: 2 }));

		const response = await app.inject({ method: 'DELETE', url: '/api/queue/inconnu' });

		expect(response.statusCode).toBe(404);
	});

	it('GET /api/queue/:id/file renvoie 404 tant que le téléchargement n’est pas terminé', async () => {
		const app = Fastify();
		await app.register(createQueueRoutes({ tmpDir, maxConcurrentDownloads: 2 }));

		const created = await app.inject({
			method: 'POST',
			url: '/api/queue',
			payload: { url: validUrl, mode: 'video' },
		});
		const { id } = created.json().item;

		const response = await app.inject({ method: 'GET', url: `/api/queue/${id}/file` });

		expect(response.statusCode).toBe(404);
	});
});