import test from 'node:test'
import assert from 'node:assert/strict'
import { buildAppMap, buildPageContract, extractRegions, inferRegionSpec, summarizeHtml, validatePageContract } from '../src/lib/html.js'

test('summarizeHtml extracts user-visible contract evidence', () => {
  const summary = summarizeHtml(`
    <title>Orders</title>
    <main>
      <h1>Orders</h1>
      <form><label>Email</label><input name="email" required><button>Save</button></form>
    </main>
  `)

  assert.equal(summary.title, 'Orders')
  assert.deepEqual(summary.labels, ['Email'])
  assert.deepEqual(summary.buttons, ['Save'])
  assert.equal(summary.inputs[0].name, 'email')
  assert.equal(summary.inputs[0].required, true)
})

test('extractRegions falls back to a single page region', () => {
  const regions = extractRegions('<h1>Hello</h1><p>World</p>')

  assert.equal(regions.length, 1)
  assert.equal(regions[0].id, 'page-1')
})

test('inferRegionSpec maps forms to VForm', () => {
  const [region] = extractRegions('<main><form><input name="q"><button>Search</button></form></main>')
  const spec = inferRegionSpec(region)

  assert.equal(spec.vuetifyComponent, 'VForm')
  assert.deepEqual(spec.uiContract.primaryActions, ['Search'])
})

test('buildPageContract creates page-level UI contract', () => {
  const html = `
    <main>
      <h1>Orders</h1>
      <form><label>Email</label><input name="email" required><button>Search</button></form>
      <table><thead><tr><th>Status</th></tr></thead><tbody><tr><td>Pending</td></tr></tbody></table>
    </main>
  `
  const regions = extractRegions(html)
  const domSummary = summarizeHtml(html)
  const contract = buildPageContract({
    page: 'orders.html',
    source: '/prototype/orders.html',
    html,
    regions,
    domSummary,
    screenshotPath: '.ht/cache/prototype/orders/desktop-default.png'
  })

  assert.equal(contract.page, 'orders.html')
  assert.equal(contract.forms[0].fields[0].required, true)
  assert.deepEqual(contract.tables[0].headers, ['Status'])
  assert.ok(contract.vuetifyComponents.includes('VTable'))
})

test('validatePageContract reports evidence mismatches', () => {
  const report = validatePageContract({
    textSamples: ['Missing'],
    actions: [{ label: 'Save' }],
    forms: [],
    vuetifyComponents: ['VContainer']
  }, {
    textSamples: ['Orders'],
    buttons: ['Search'],
    labels: []
  })

  assert.equal(report.requiresHumanReview, true)
  assert.match(report.warnings.join('\n'), /Missing/)
  assert.match(report.warnings.join('\n'), /Save/)
})

test('buildAppMap classifies auth, shell references, and feature pages', () => {
  const prototypeDir = '/repo/prototype'
  const specs = [
    buildSpec('/repo/prototype/portal/login.html', '<main><input type="password" name="pwd"><button>登入</button></main>'),
    buildSpec('/repo/prototype/portal/app-layout.html', '<main><button>隱藏選單</button><button>登　　出</button></main>'),
    buildSpec('/repo/prototype/venue/applications-list.html', '<main><h1>我的申請紀錄</h1><table><tr><th>申請單號</th></tr></table><button>查詢</button></main>')
  ]

  const appMap = buildAppMap(specs, prototypeDir)

  assert.equal(appMap.routes.find((route) => route.prototype === 'portal/login.html').kind, 'auth')
  assert.equal(appMap.routes.find((route) => route.prototype === 'portal/login.html').layout, 'template-auth')
  assert.equal(buildAppMap([
    buildSpec('/repo/prototype/portal/forget-password.html', '<main><h1>忘記密碼</h1><input name="idno"><button>發送至信箱</button></main>')
  ], prototypeDir).routes[0].targetRole, 'forgot-password')
  assert.equal(appMap.routes.find((route) => route.prototype === 'portal/app-layout.html').kind, 'legacy-shell-reference')
  assert.equal(appMap.routes.find((route) => route.prototype === 'portal/app-layout.html').usePrototypeContent, false)
  assert.equal(appMap.routes.find((route) => route.prototype === 'venue/applications-list.html').kind, 'feature-page')
  assert.equal(appMap.routes.find((route) => route.prototype === 'venue/applications-list.html').layout, 'template-app')
  assert.equal(appMap.modules.find((module) => module.name === 'venue').kind, 'feature-module')
})

function buildSpec(source, html) {
  const regions = extractRegions(html)
  const domSummary = summarizeHtml(html)
  const page = source.split('/').at(-1)
  return {
    source,
    page,
    pageContract: buildPageContract({
      page,
      source,
      html,
      regions,
      domSummary,
      screenshotPath: `.ht/cache/prototype/${page.replace(/\.html$/, '')}/desktop-default.png`
    })
  }
}