import { describe, it, expect, vi, afterEach } from 'vitest'
import { defineComponent, h } from 'vue'
import { mount } from '@vue/test-utils'
import { useReviewContent, type ReviewItem } from './useReviewContent'

/**
 * Honesty guard: consumer-supplied `defaults` (placeholder / sample reviews)
 * are a DEV-ONLY affordance. In a production build the composable must render an
 * honest empty state instead of fabricated social proof — this is the fix for
 * the flagship SSR bug where a fabricated fallback was baked into the crawler
 * HTML while the client showed the real reviews.
 */

const SAMPLE_DEFAULTS: ReviewItem[] = [
  { id: 'seed-1', platform: 'google', rating: 5, authorName: 'Sample Person', text: 'Placeholder review' },
]

function mountReviews(config: Parameters<typeof useReviewContent>[0]) {
  let api!: ReturnType<typeof useReviewContent>
  const Comp = defineComponent({
    setup() {
      api = useReviewContent(config)
      return () => h('div')
    },
  })
  const wrapper = mount(Comp)
  return { api, wrapper }
}

afterEach(() => {
  vi.unstubAllEnvs()
  vi.unstubAllGlobals()
  vi.restoreAllMocks()
  delete (globalThis as Record<string, unknown>).__DCS_CONTENT__
})

describe('useReviewContent honesty guard', () => {
  it('production build with no content define renders an empty state, NOT the defaults', () => {
    vi.stubEnv('DEV', false)
    // __DCS_CONTENT__ intentionally undefined (simulates a production SSR pass
    // where the define never reached the composable / no curated reviews).
    const { api, wrapper } = mountReviews({ sectionKey: 'testimonials', defaults: SAMPLE_DEFAULTS })

    expect(api.reviews.value).toEqual([])
    expect(api.hasReviews.value).toBe(false)
    expect(api.count.value).toBe(0)
    wrapper.unmount()
  })

  it('production build with no reviews for the section renders empty, NOT the defaults', () => {
    vi.stubEnv('DEV', false)
    vi.stubGlobal('__DCS_CONTENT__', { global: {}, pages: {} })
    const { api, wrapper } = mountReviews({ sectionKey: 'testimonials', defaults: SAMPLE_DEFAULTS })

    expect(api.reviews.value).toEqual([])
    expect(api.hasReviews.value).toBe(false)
    wrapper.unmount()
  })

  it('production build DOES render the real curated reviews from the content define', () => {
    vi.stubEnv('DEV', false)
    vi.stubGlobal('__DCS_CONTENT__', {
      global: {
        'reviews.testimonials.items': [
          { id: 'real-1', platform: 'google', rating: 5, authorName: 'Real Reviewer', text: 'Genuine review' },
        ],
      },
      pages: {},
    })
    const { api, wrapper } = mountReviews({ sectionKey: 'testimonials', defaults: SAMPLE_DEFAULTS })

    expect(api.reviews.value).toHaveLength(1)
    expect(api.reviews.value[0].authorName).toBe('Real Reviewer')
    expect(api.hasReviews.value).toBe(true)
    wrapper.unmount()
  })

  it('dev build still surfaces the sample defaults (DX affordance)', () => {
    vi.stubEnv('DEV', true)
    const { api, wrapper } = mountReviews({ sectionKey: 'testimonials', defaults: SAMPLE_DEFAULTS })

    expect(api.reviews.value).toHaveLength(1)
    expect(api.reviews.value[0].id).toBe('seed-1')
    wrapper.unmount()
  })
})