import { describe, it, expect } from 'vitest'
import request from 'supertest'
import express from 'express'
import path from 'path'
import { fileURLToPath } from 'url'

const __dirname = path.dirname(fileURLToPath(import.meta.url))
const publicDir = path.join(__dirname, '../../../public')

function createBuggyApp() {
  const app = express()
  app.use(express.static(publicDir, { etag: true }))

  // Simulate the old buggy behavior - serve file directly instead of redirect
  app.get("/status", (_req, res) => {
    res.sendFile(path.join(publicDir, 'status.html'))
  })

  // Clean URLs for other pages
  for (const page of ["privacy", "terms", "impressum", "usage"]) {
    app.get(`/${page}`, (_req, res) => res.redirect(301, `/${page}.html`));
  }

  return app
}

function createFixedApp() {
  const app = express()
  app.use(express.static(publicDir, { etag: true }))

  // The FIX: Remove statusRouter, let redirect loop handle it
  // Clean URLs for legal pages (redirect /status → /status.html, etc.)
  for (const page of ["privacy", "terms", "impressum", "status", "usage"]) {
    app.get(`/${page}`, (_req, res) => res.redirect(301, `/${page}.html`));
  }

  return app
}

describe('Status Route BUG-020', () => {
  it('CURRENT BUGGY BEHAVIOR: GET /status returns 200 instead of 301 redirect', async () => {
    const buggyApp = createBuggyApp()
    const res = await request(buggyApp).get('/status')
    expect(res.status).toBe(200) // This is the bug - should be 301
    expect(res.headers['content-type']).toContain('text/html')
  })

  it('EXPECTED BEHAVIOR: GET /status should redirect to /status.html with 301', async () => {
    const fixedApp = createFixedApp()
    const res = await request(fixedApp).get('/status').expect(301)
    expect(res.headers['location']).toBe('/status.html')
  })

  it('GET /status.html should always return 200', async () => {
    const app = createBuggyApp() // This works the same in both cases
    const res = await request(app).get('/status.html')
    expect(res.status).toBe(200)
    expect(res.headers['content-type']).toContain('text/html')
  })
})