import Database from 'better-sqlite3';
import { execFileSync } from 'node:child_process';
import { mkdtempSync, rmSync } from 'node:fs';
import { tmpdir } from 'node:os';
import path from 'node:path';
import { afterEach, describe, expect, it, vi } from 'vitest';

const temporaryDirectories: string[] = [];

afterEach(async () => {
	const { closeDatabase } = await import('./database.js');
	closeDatabase();
	delete process.env.SENDEWERK_DB_PATH;
	delete process.env.SENDEWERK_UPLOAD_DIR;
	for (const directory of temporaryDirectories.splice(0)) {
		rmSync(directory, { recursive: true, force: true });
	}
	vi.resetModules();
});

describe('database setup', () => {
	it('runs migrations and the seed repeatedly in an isolated database', () => {
		const directory = mkdtempSync(path.join(tmpdir(), 'sendewerk-test-'));
		temporaryDirectories.push(directory);
		const databasePath = path.join(directory, 'test.sqlite');
		const environment = {
			...process.env,
			SENDEWERK_DB_PATH: databasePath,
			SENDEWERK_UPLOAD_DIR: path.join(directory, 'uploads')
		};

		for (let run = 0; run < 2; run += 1) {
			execFileSync(process.execPath, ['scripts/migrate.mjs'], {
				cwd: process.cwd(),
				env: environment
			});
			execFileSync(process.execPath, ['scripts/seed.mjs'], {
				cwd: process.cwd(),
				env: environment
			});
		}

		const database = new Database(databasePath, { readonly: true });
		const counts = database
			.prepare(
				`SELECT
					(SELECT count(*) FROM schema_migrations) AS migrations,
					(SELECT count(*) FROM pieces) AS pieces,
					(SELECT count(*) FROM shows) AS shows,
					(SELECT count(*) FROM piece_usages) AS usages,
					(SELECT count(*) FROM show_templates) AS templates,
					(SELECT count(*) FROM show_sections WHERE is_reserve_bank = 1) AS reserve_banks`
			)
			.get() as {
			migrations: number;
			pieces: number;
			shows: number;
			usages: number;
			templates: number;
			reserve_banks: number;
		};
		database.close();

		expect(counts).toEqual({
			migrations: 12,
			pieces: 6,
			shows: 2,
			usages: 5,
			templates: 2,
			reserve_banks: 2
		});
		expect(databasePath).not.toBe(path.resolve('.data/sendewerk.sqlite'));
	});

	it('does not count reserve pieces or explicit sections twice', async () => {
		const directory = mkdtempSync(path.join(tmpdir(), 'sendewerk-duration-test-'));
		temporaryDirectories.push(directory);
		process.env.SENDEWERK_DB_PATH = path.join(directory, 'test.sqlite');
		process.env.SENDEWERK_UPLOAD_DIR = path.join(directory, 'uploads');

		execFileSync(process.execPath, ['scripts/migrate.mjs'], {
			cwd: process.cwd(),
			env: process.env
		});
		execFileSync(process.execPath, ['scripts/seed.mjs'], { cwd: process.cwd(), env: process.env });
		const { getShow } = await import('./previews.js');
		const show = getShow();

		expect(show.sections.map((section) => section.durationSeconds)).toEqual([300, 1200, 3600]);
		expect(show.totalDurationSeconds).toBe(5100);
		expect(show.sections[1].usages.find((usage) => usage.isReserve)?.durationSeconds).toBe(540);
	});
});