import Database from 'better-sqlite3';
import { execFileSync } from 'node:child_process';
import { mkdtempSync, readdirSync, readFileSync, 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: 20,
			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);
	});

	it('upgrades existing completed shows into stable finalizations exactly once', () => {
		const directory = mkdtempSync(path.join(tmpdir(), 'sendewerk-upgrade-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')
		};
		const database = new Database(databasePath);
		database.pragma('foreign_keys = ON');
		database.exec(
			'CREATE TABLE schema_migrations (name TEXT PRIMARY KEY, applied_at_utc TEXT NOT NULL)'
		);
		const migrationDirectory = path.resolve('migrations');
		const oldMigrations = readdirSync(migrationDirectory)
			.filter(
				(name) =>
					/^\d+.+\.sql$/.test(name) && !name.startsWith('0015_') && !name.startsWith('0016_')
			)
			.sort();
		for (const name of oldMigrations) {
			database.exec(readFileSync(path.join(migrationDirectory, name), 'utf8'));
			database
				.prepare('INSERT INTO schema_migrations (name, applied_at_utc) VALUES (?, ?)')
				.run(name, new Date().toISOString());
		}
		database.close();
		execFileSync(process.execPath, ['scripts/seed.mjs'], { cwd: process.cwd(), env: environment });

		const legacy = new Database(databasePath);
		legacy.pragma('foreign_keys = ON');
		const usage = legacy
			.prepare(
				`SELECT u.id FROM piece_usages u JOIN show_sections s ON s.id = u.show_section_id
				 WHERE s.show_id = 'show-october' AND s.is_reserve_bank = 0 LIMIT 1`
			)
			.get() as { id: string };
		legacy.prepare("UPDATE piece_usages SET status = 'done' WHERE id = ?").run(usage.id);
		legacy.prepare("UPDATE shows SET status = 'completed' WHERE id = 'show-october'").run();
		const completionMigration = '0015_completion_archive_and_shares.sql';
		legacy.exec(readFileSync(path.join(migrationDirectory, completionMigration), 'utf8'));
		legacy
			.prepare('INSERT INTO schema_migrations (name, applied_at_utc) VALUES (?, ?)')
			.run(completionMigration, new Date().toISOString());
		const now = new Date().toISOString();
		legacy
			.prepare(
				`INSERT INTO users (id, email, email_normalized, display_name, password_hash, role,
				 password_changed_at_utc, created_at_utc, updated_at_utc)
				 VALUES ('upgrade-barkeeper', 'upgrade@example.test', 'upgrade@example.test',
				 'Upgrade', 'unused', 'barkeeper', ?, ?, ?)`
			)
			.run(now, now, now);
		legacy
			.prepare(
				`INSERT INTO show_shares
				 (id, show_id, token_hash, scope, password_hash, expires_at_utc, revoked_at_utc,
				 created_by_user_id, created_at_utc)
				 VALUES ('upgrade-share', 'show-october', 'upgrade-token-hash', 'rundown', NULL,
				 NULL, NULL, 'upgrade-barkeeper', ?)`
			)
			.run(now);
		legacy
			.prepare(
				`INSERT INTO show_share_sessions (token_hash, share_id, created_at_utc, expires_at_utc)
				 VALUES ('upgrade-session-hash', 'upgrade-share', ?, ?)`
			)
			.run(now, new Date(Date.now() + 60_000).toISOString());
		legacy.close();

		for (let run = 0; run < 2; run += 1) {
			execFileSync(process.execPath, ['scripts/migrate.mjs'], {
				cwd: process.cwd(),
				env: environment
			});
		}
		const upgraded = new Database(databasePath, { readonly: true });
		expect(
			upgraded
				.prepare(
					`SELECT
					 (SELECT count(*) FROM show_finalizations WHERE show_id = 'show-october') AS finalizations,
					 (SELECT count(*) FROM piece_usage_history WHERE show_id = 'show-october') AS history,
					 (SELECT count(*) FROM show_shares WHERE id = 'upgrade-share') AS shares,
					 (SELECT count(*) FROM show_share_sessions WHERE token_hash = 'upgrade-session-hash') AS sessions`
				)
				.get()
		).toEqual({ finalizations: 1, history: 1, shares: 1, sessions: 1 });
		expect(upgraded.pragma('foreign_key_check')).toEqual([]);
		upgraded.close();
	});
});