import test from 'node:test'
import assert from 'node:assert/strict'
import fs from 'node:fs'
import os from 'node:os'
import path from 'node:path'
import { execFileSync } from 'node:child_process'
import { credentialHelperCmd, fixRepoConfig } from '../forge.mjs'

function git(cwd, ...args) {
  return execFileSync('git', ['-C', cwd, ...args], { encoding: 'utf8' }).trimEnd()
}

function tempRepo() {
  const root = fs.mkdtempSync(path.join(os.tmpdir(), 'git-forge-credentials-'))
  const repo = path.join(root, 'repo')
  fs.mkdirSync(repo)
  execFileSync('git', ['init', '--quiet', repo])
  return { root, repo }
}

test('forge_fix_credentials replaces local helpers and resolves nested paths', async () => {
  const { root, repo } = tempRepo()
  try {
    git(repo, 'config', '--local', '--add', 'credential.helper', 'store')
    git(repo, 'config', '--local', '--add', 'credential.helper', 'old-helper')
    const nested = path.join(repo, 'nested')
    fs.mkdirSync(nested)

    const result = await fixRepoConfig(nested)
    const expected = credentialHelperCmd()

    assert.equal(result.path, repo)
    assert.equal(result.fixed, true)
    assert.deepEqual(result.previous, ['store', 'old-helper'])
    assert.deepEqual(result.current, ['', expected])
    assert.deepEqual(git(repo, 'config', '--local', '--get-all', 'credential.helper').split('\n'), ['', expected])
  } finally {
    fs.rmSync(root, { recursive: true, force: true })
  }
})

test('forge_fix_credentials rejects a non-repository path', async () => {
  const root = fs.mkdtempSync(path.join(os.tmpdir(), 'git-forge-not-repo-'))
  try {
    await assert.rejects(() => fixRepoConfig(root), /not a git repository/)
  } finally {
    fs.rmSync(root, { recursive: true, force: true })
  }
})