import test from 'node:test'
import assert from 'node:assert/strict'
import fs from 'node:fs'
import path from 'node:path'
import os from 'node:os'
import {
  parseWorktreePorcelain,
  gitExec,
  getGitRoot,
} from '../index.js'

test('parseWorktreePorcelain parses git porcelain worktree format', () => {
  const sample = `worktree /home/user/project
HEAD 1234567890abcdef
branch refs/heads/main

worktree /home/user/project/.worktrees/feature-a
HEAD fedcba0987654321
branch refs/heads/feature-a

worktree /home/user/project/.worktrees/detached-run
HEAD aaaaaaa000000000
detached
`
  const res = parseWorktreePorcelain(sample)
  assert.equal(res.length, 3)
  assert.equal(res[0].path, '/home/user/project')
  assert.equal(res[0].branch, 'main')
  assert.equal(res[0].commit, '1234567890abcdef')
  assert.equal(res[1].branch, 'feature-a')
  assert.equal(res[2].detached, true)
})

test('gitExec and getGitRoot inside real git repo', async () => {
  const tmp = fs.mkdtempSync(path.join(os.tmpdir(), 'git-wt-test-'))
  await gitExec(tmp, ['init', '-b', 'main'])
  await gitExec(tmp, ['config', 'user.name', 'Test Agent'])
  await gitExec(tmp, ['config', 'user.email', 'test@example.com'])
  fs.writeFileSync(path.join(tmp, 'hello.txt'), 'hello world')
  await gitExec(tmp, ['add', 'hello.txt'])
  await gitExec(tmp, ['commit', '-m', 'initial commit'])

  const root = await getGitRoot(tmp)
  // Resolve symlinks if any on temporary dirs
  assert.equal(fs.realpathSync(root), fs.realpathSync(tmp))

  // Create worktree
  const wtDir = path.join(tmp, '.worktrees', 'test-wt')
  const addRes = await gitExec(tmp, ['worktree', 'add', '-b', 'feature-test', wtDir])
  assert.equal(addRes.code, 0)

  // Verify list
  const listRes = await gitExec(tmp, ['worktree', 'list', '--porcelain'])
  const parsed = parseWorktreePorcelain(listRes.stdout)
  assert.equal(parsed.length, 2)
  assert.ok(parsed.some((w) => w.branch === 'feature-test'))

  // Remove worktree
  const rmRes = await gitExec(tmp, ['worktree', 'remove', wtDir])
  assert.equal(rmRes.code, 0)

  fs.rmSync(tmp, { recursive: true, force: true })
})