import { describe, it, expect } from 'vitest'
import { buildExtrasForPage } from '@/lib/exporter/extras'
import type { Page } from '@/lib/schema/page'

function td(b: Uint8Array){ return new TextDecoder().decode(b) }

const basePage: Page = {
  title: 'Test',
  seo: { title: 'T', description: 'D' },
  theme: { primaryColor: '#0ea5e9', fontFamily: 'Inter' },
  analytics: { ga4MeasurementId: '', metaPixelId: '', customHeadHtml: '' },
  sections: [],
  form: {
    fields: [],
    actionUrl: '',
    spamProtection: { honeypotFieldName: '_hp', minSubmitSeconds: 2 },
  },
  locale: 'en',
}

describe('Sheets template enhance', () => {
  it('includes version/meta and mapping/error guide in Code.gs and README', () => {
    const extras = buildExtrasForPage(basePage, { sheetsMode: 'include' })
    const code = td(extras['sheets/Code.gs'])
    const readme = td(extras['sheets/README.txt'])

    // version/meta header
    expect(code).toMatch(/@version:\s*\d+\.\d+\.\d+/)
    expect(code).toMatch(/@tool:\s*landing-builder/i)

    // field mapping and error handling guides
    expect(code).toMatch(/TODO:\s*map incoming fields to sheet columns/i)
    expect(code).toMatch(/try\s*\{/)
    expect(code).toMatch(/catch\s*\(e\)/)

    // README includes setup and mapping hint
    expect(readme).toMatch(/Apps Script/i)
    expect(readme).toMatch(/Deploy as Web App/i)
    expect(readme).toMatch(/Map fields to columns/i)
  })

  it('respects exclude mode', () => {
    const extras = buildExtrasForPage(basePage, { sheetsMode: 'exclude' })
    expect(Object.keys(extras).some(k => k.startsWith('sheets/'))).toBe(false)
  })
})