// ============================================================
// request.ts 拦截器测试
// ============================================================

import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest'
import { http, HttpResponse } from 'msw'
import { setupServer } from 'msw/node'

// ── Hoisted: mock functions + store (accessible in vi.mock factory) ──
const { mockSetToken, mockSetRefreshToken, mockLogout, _store } = vi.hoisted(() => {
  const mockSetToken = vi.fn()
  const mockSetRefreshToken = vi.fn()
  const mockLogout = vi.fn()
  const _store = {
    token: null as string | null,
    refreshToken: null as string | null,
    setToken: mockSetToken,
    setRefreshToken: mockSetRefreshToken,
    logout: mockLogout,
  }
  return { mockSetToken, mockSetRefreshToken, mockLogout, _store }
})

vi.mock('@/stores/authStore', () => ({
  useAuthStore: {
    getState: () => _store,
  },
}))

import request, { ApiRequestError } from '@/services/request'

function setStoreState(overrides: Partial<typeof _store>) {
  Object.assign(_store, overrides)
}

// ── MSW server ──────────────────────────────────────────────
const server = setupServer()

beforeEach(() => {
  server.listen({ onUnhandledRequest: 'bypass' })
  mockSetToken.mockClear()
  mockSetRefreshToken.mockClear()
  mockLogout.mockClear()
  _store.token = null
  _store.refreshToken = null
})

afterEach(() => {
  server.close()
})

describe('request interceptor', () => {
  it('attaches Authorization header when token exists', async () => {
    let capturedAuth: string | null = null
    server.use(
      http.get('*/api/v1/test', ({ request }) => {
        capturedAuth = request.headers.get('Authorization')
        return HttpResponse.json({ ok: true })
      }),
    )

    setStoreState({ token: 'test-jwt-token' })
    await request.get('/test')

    expect(capturedAuth).toBe('Bearer test-jwt-token')
  })

  it('does not attach Authorization header when no token', async () => {
    let capturedAuth: string | null = null
    server.use(
      http.get('*/api/v1/test', ({ request }) => {
        capturedAuth = request.headers.get('Authorization')
        return HttpResponse.json({ ok: true })
      }),
    )

    setStoreState({ token: null })
    await request.get('/test')

    expect(capturedAuth).toBeNull()
  })

  it('wraps non-401 errors as ApiRequestError', async () => {
    server.use(
      http.get('*/api/v1/test', () => {
        return HttpResponse.json(
          { error: 'not_found', message: 'Resource not found' },
          { status: 404 },
        )
      }),
    )

    try {
      await request.get('/test')
      expect.fail('Should have thrown')
    } catch (err) {
      expect(err).toBeInstanceOf(ApiRequestError)
      expect((err as ApiRequestError).status).toBe(404)
      expect((err as ApiRequestError).body.message).toBe('Resource not found')
    }
  })

  it('wraps network errors as ApiRequestError with status 0', async () => {
    server.use(
      http.get('*/api/v1/test', () => {
        return HttpResponse.error()
      }),
    )

    try {
      await request.get('/test')
      expect.fail('Should have thrown')
    } catch (err) {
      expect(err).toBeInstanceOf(ApiRequestError)
      expect((err as ApiRequestError).status).toBe(0)
    }
  })

  it('handles 401 with refresh token success', async () => {
    let callCount = 0

    server.use(
      http.get('*/api/v1/protected', () => {
        callCount++
        if (callCount === 1) {
          return HttpResponse.json({ error: 'unauthorized' }, { status: 401 })
        }
        return HttpResponse.json({ data: 'success' })
      }),
      http.post('*/api/v1/auth/refresh', () => {
        return HttpResponse.json({ token: 'new-jwt', refresh_token: 'new-refresh' })
      }),
    )

    setStoreState({ token: 'old-jwt', refreshToken: 'old-refresh' })
    const res = await request.get('/protected')

    expect(res.data).toEqual({ data: 'success' })
    expect(mockSetToken).toHaveBeenCalledWith('new-jwt')
    expect(mockSetRefreshToken).toHaveBeenCalledWith('new-refresh')
  })

  it('handles 401 with no refresh token — calls logout immediately', async () => {
    server.use(
      http.get('*/api/v1/norefresh', () => {
        return HttpResponse.json({ error: 'unauthorized' }, { status: 401 })
      }),
    )

    setStoreState({ token: 'old-jwt', refreshToken: null })

    try {
      await request.get('/norefresh')
      expect.fail('Should have thrown')
    } catch {
      expect(mockLogout).toHaveBeenCalled()
    }
  })

  it('handles 401 with refresh failure — calls logout', async () => {
    server.use(
      http.get('*/api/v1/refreshfail', () => {
        return HttpResponse.json({ error: 'unauthorized' }, { status: 401 })
      }),
      http.post('*/api/v1/auth/refresh', () => {
        return HttpResponse.json({ error: 'invalid' }, { status: 401 })
      }),
    )

    setStoreState({ token: 'old-jwt', refreshToken: 'old-refresh' })

    try {
      await request.get('/refreshfail')
      expect.fail('Should have thrown')
    } catch {
      expect(mockLogout).toHaveBeenCalled()
    }
  })
})