import { chmodSync, existsSync, mkdirSync, readFileSync, statSync, writeFileSync } from 'node:fs';

import path from 'node:path';

import { expect, test } from 'rstack/test';

import { createHookFiles } from '../../src/setup/hooks.ts';

import { installHooks } from '../../src/setup/install.ts';

import { git, hooksPath, restoreEnv, runGit, withRepository } from './helpers.ts';

test('installs generated hooks and configures the repository', () => {

withRepository((cwd) => {

expect(installHooks({ cwd })).toEqual({ status: 'installed', hooksPath });

expect(runGit(cwd, ['config', '--local', '--get', 'core.hooksPath'])).toBe(hooksPath);

const directory = path.join(cwd, hooksPath);

expect(readFileSync(path.join(directory, '.gitignore'), 'utf8')).toBe('*\n');

expect(readFileSync(path.join(directory, '.owner'), 'utf8')).toBe('.\n');

expect(runGit(cwd, ['status', '--short', '--untracked-files=all'])).toBe('');

for (const [name, content] of Object.entries(createHookFiles())) {

const filePath = path.join(directory, name);

expect(readFileSync(filePath, 'utf8')).toBe(content);

if (process.platform !== 'win32') {

expect(statSync(filePath).mode & 0o777).toBe(0o755);

}

}

});

});

test('is idempotent and preserves user hooks', () => {

withRepository((cwd) => {

const userDirectory = path.join(cwd, '.rstack', 'hooks');

const userHook = path.join(userDirectory, 'pre-commit');

mkdirSync(userDirectory, { recursive: true });

writeFileSync(userHook, 'echo user hook\n');

expect(installHooks({ cwd }).status).toBe('installed');

expect(installHooks({ cwd })).toEqual({ status: 'unchanged', hooksPath });

expect(readFileSync(userHook, 'utf8')).toBe('echo user hook\n');

expect(existsSync(path.join(userDirectory, 'commit-msg'))).toBe(false);

});

});

test.runIf(process.platform !== 'win32')('restores executable mode on existing shims', () => {

withRepository((cwd) => {

expect(installHooks({ cwd }).status).toBe('installed');

const shim = path.join(cwd, hooksPath, 'pre-commit');

chmodSync(shim, 0o644);

expect(installHooks({ cwd }).status).toBe('installed');

expect(statSync(shim).mode & 0o777).toBe(0o755);

});

});

test('repairs generated files without rewriting an unchanged hooksPath', () => {

withRepository((cwd) => {

expect(installHooks({ cwd }).status).toBe('installed');

const runner = path.join(cwd, hooksPath, 'runner');

writeFileSync(runner, 'stale\n');

writeFileSync(path.join(cwd, '.git', 'config.lock'), 'locked');

expect(installHooks({ cwd })).toEqual({ status: 'installed', hooksPath });

expect(readFileSync(runner, 'utf8')).toBe(createHookFiles().runner);

});

});

test('resolves repository context with a single Git process when unchanged', () => {

withRepository((cwd) => {

expect(installHooks({ cwd }).status).toBe('installed');

const tracePath = path.join(cwd, 'git-trace.json');

const originalTrace = process.env.GIT_TRACE2_EVENT;

process.env.GIT_TRACE2_EVENT = tracePath;

try {

expect(installHooks({ cwd })).toEqual({ status: 'unchanged', hooksPath });

} finally {

restoreEnv('GIT_TRACE2_EVENT', originalTrace);

}

const starts = readFileSync(tracePath, 'utf8')

.trim()

.split('\n')

.map((line) => JSON.parse(line))

.filter((event) => event.event === 'start');

expect(starts).toHaveLength(1);

expect(starts[0].argv).toContain('rev-parse');

});

});

test('does not configure Git when writing generated files fails', () => {

withRepository((cwd) => {

writeFileSync(path.join(cwd, '.rstack'), 'not a directory');

expect(installHooks({ cwd })).toMatchObject({

status: 'failed',

reason: 'write-failed',

});

expect(git(cwd, ['config', '--local', '--get', 'core.hooksPath']).status).toBe(1);

});

});

test('reports Git configuration failures without changing hooksPath', () => {

withRepository((cwd) => {

writeFileSync(path.join(cwd, '.git', 'config.lock'), 'locked');

expect(installHooks({ cwd })).toMatchObject({

status: 'failed',

reason: 'git-config-failed',

});

expect(git(cwd, ['config', '--local', '--get', 'core.hooksPath']).status).toBe(1);

expect(existsSync(path.join(cwd, hooksPath, 'runner'))).toBe(true);

});

});

test('does not replace another Git hooks path', () => {

withRepository((cwd) => {

runGit(cwd, ['config', '--local', 'core.hooksPath', '.husky/_']);

expect(installHooks({ cwd })).toMatchObject({

status: 'skipped',

reason: 'hooks-path-conflict',

});

expect(runGit(cwd, ['config', '--local', '--get', 'core.hooksPath'])).toBe('.husky/_');

expect(existsSync(path.join(cwd, hooksPath))).toBe(false);

});

});

test('does not bypass existing Git hooks', () => {

withRepository((cwd) => {

const existingHook = path.join(cwd, '.git', 'hooks', 'pre-commit');

writeFileSync(existingHook, '#!/usr/bin/env sh\n');

expect(installHooks({ cwd })).toEqual({

status: 'skipped',

reason: 'existing-git-hooks',

message: 'existing Git hooks were found: pre-commit',

});

expect(git(cwd, ['config', '--local', '--get', 'core.hooksPath']).status).toBe(1);

expect(readFileSync(existingHook, 'utf8')).toBe('#!/usr/bin/env sh\n');

});

});