import { nextTestSetup, itTurbopack } from 'e2e-utils'

describe('route-bundle-stats', () => {
  const { next, isNextDeploy } = nextTestSetup({
    files: __dirname,
  })

  if (isNextDeploy) {
    it('should skip', () => {})
    return
  }

  const STATS_PATH = '.next/diagnostics/route-bundle-stats.json'

  itTurbopack(
    'writes .next/diagnostics/route-bundle-stats.json after build',
    async () => {
      const raw = await next.readFile(STATS_PATH)
      const stats = JSON.parse(raw)

      expect(Array.isArray(stats)).toBe(true)
      expect(stats.length).toBeGreaterThan(0)

      for (const entry of stats) {
        expect(typeof entry.route).toBe('string')
        expect(entry.route).toMatch(/^\//)
        expect(typeof entry.firstLoadUncompressedJsBytes).toBe('number')
        expect(entry.firstLoadUncompressedJsBytes).toBeGreaterThan(0)
        expect(Array.isArray(entry.firstLoadChunkPaths)).toBe(true)
        expect(entry.firstLoadChunkPaths.length).toBeGreaterThan(0)

        for (const chunkPath of entry.firstLoadChunkPaths) {
          expect(chunkPath).toMatch(/^\.next[\\/]/)
        }
      }

      // Entries are sorted descending by firstLoadUncompressedJsBytes.
      for (let i = 1; i < stats.length; i++) {
        expect(
          stats[i - 1].firstLoadUncompressedJsBytes
        ).toBeGreaterThanOrEqual(stats[i].firstLoadUncompressedJsBytes)
      }
    }
  )

  itTurbopack('includes both Pages Router and App Router routes', async () => {
    const stats = JSON.parse(await next.readFile(STATS_PATH))
    const routes = stats.map((e: { route: string }) => e.route)

    expect(routes).toContain('/')
    expect(routes).toContain('/blog')
  })
})