import test from 'node:test'
import assert from 'node:assert/strict'
import { execFile } from 'node:child_process'
import { mkdir, readFile, writeFile } from 'node:fs/promises'
import { join } from 'node:path'
import { tmpdir } from 'node:os'
import { mkdtemp } from 'node:fs/promises'
import { promisify } from 'node:util'

const exec = promisify(execFile)
const cli = new URL('../src/cli.js', import.meta.url).pathname

test('CLI runs doctor and scan against one prototype', async () => {
  const cwd = await mkdtemp(join(tmpdir(), 'ht-e2e-'))
  await mkdir(join(cwd, 'packages/prototype'), { recursive: true })
  await writeFile(join(cwd, 'packages/prototype/index.html'), `
    <main>
      <h1>Customer Portal</h1>
      <form>
        <label>Email</label>
        <input name="email" required>
        <button>Submit</button>
      </form>
    </main>
  `)
  await writeFile(join(cwd, 'packages/prototype/portal.md'), `
    # Portal Guide

    | 雛型檔 | 舊 JSP 來源 | 功能 |
    | --- | --- | --- |
    | [\`index.html\`](index.html) | \`legacy/index.jsp\` | Customer portal entry |
  `)

  const doctor = await exec('node', [cli, 'doctor'], { cwd })
  await exec('node', [cli, 'scan'], { cwd })

  const contract = await readFile(join(cwd, '.ht/spec/index.ui-contract.md'), 'utf8')
  const spec = JSON.parse(await readFile(join(cwd, '.ht/spec/index.spec.json'), 'utf8'))
  const validation = JSON.parse(await readFile(join(cwd, '.ht/spec/index.validation.json'), 'utf8'))
  const appMap = JSON.parse(await readFile(join(cwd, '.ht/app-map.json'), 'utf8'))

  assert.match(doctor.stdout, /ok prototype directory/)
  assert.match(contract, /Customer Portal/)
  assert.equal(spec.pageContract.title, null)
  assert.deepEqual(pick(spec.pageContract.forms[0].fields[0], ['name', 'label', 'type', 'required']), {
    name: 'email',
    label: 'Email',
    type: 'input',
    required: true
  })
  assert.equal(validation.requiresHumanReview, false)
  assert.equal(appMap.routes[0].prototype, 'index.html')
  assert.equal(appMap.routes[0].kind, 'feature-page')
  assert.equal(appMap.routes[0].layout, 'template-app')
  assert.equal(appMap.routes[0].guide.legacyJsp, 'legacy/index.jsp')
  assert.equal(appMap.routes[0].guide.description, 'Customer portal entry')
  assert.equal(appMap.guideSources[0].source, 'portal.md')
})

function pick(object, keys) {
  return Object.fromEntries(keys.map((key) => [key, object[key]]))
}

test('CLI help only exposes MVP commands', async () => {
  const result = await exec('node', [cli, 'help'])

  assert.match(result.stdout, /doctor/)
  assert.match(result.stdout, /scan/)
  assert.doesNotMatch(result.stdout, /plan/)
  assert.doesNotMatch(result.stdout, /run/)
  assert.doesNotMatch(result.stdout, /diff/)
  assert.doesNotMatch(result.stdout, /verify/)
})

test('CLI rejects removed pipeline commands', async () => {
  await assert.rejects(
    exec('node', [cli, 'plan']),
    (error) => {
      assert.equal(error.code, 1)
      assert.match(error.stdout, /doctor/)
      assert.match(error.stdout, /scan/)
      return true
    }
  )
})