// @vitest-environment jsdom
import { describe, it, expect, vi, beforeEach } from 'vitest'

const mockFetch = vi.fn()
vi.stubGlobal('fetch', mockFetch)

// vi.mock is hoisted, so mockReplace must be inside the factory
vi.mock('@/router', () => ({
  default: {
    currentRoute: { value: { name: 'hermes.chat' } },
    replace: vi.fn(),
  },
}))

import { getApiKey, setApiKey, clearApiKey, hasApiKey, request } from '../../packages/client/src/api/client'
import router from '@/router'

describe('API Client', () => {
  beforeEach(() => {
    localStorage.clear()
    vi.clearAllMocks()
  })

  describe('token management', () => {
    it('hasApiKey returns false when no token', () => {
      expect(hasApiKey()).toBe(false)
    })

    it('hasApiKey returns true after setApiKey', () => {
      setApiKey('test-token')
      expect(hasApiKey()).toBe(true)
    })

    it('getApiKey returns the stored token', () => {
      setApiKey('my-token')
      expect(getApiKey()).toBe('my-token')
    })

    it('clearApiKey removes the token', () => {
      setApiKey('my-token')
      clearApiKey()
      expect(hasApiKey()).toBe(false)
      expect(getApiKey()).toBe('')
    })
  })

  describe('request', () => {
    it('adds Authorization header when token exists', async () => {
      setApiKey('secret-key')
      mockFetch.mockResolvedValue({ ok: true, status: 200, json: () => ({ data: 1 }) })

      await request('/api/hermes/sessions')

      expect(mockFetch).toHaveBeenCalledOnce()
      const [, options] = mockFetch.mock.calls[0]
      expect(options.headers.Authorization).toBe('Bearer secret-key')
    })

    it('does not add Authorization header when no token', async () => {
      mockFetch.mockResolvedValue({ ok: true, status: 200, json: () => ({ data: 1 }) })

      await request('/api/hermes/sessions')

      const [, options] = mockFetch.mock.calls[0]
      expect(options.headers.Authorization).toBeUndefined()
    })

    it('clears token and redirects on 401 for local BFF endpoints', async () => {
      setApiKey('secret-key')
      mockFetch.mockResolvedValue({ ok: false, status: 401 })

      await expect(request('/api/hermes/sessions')).rejects.toThrow('Unauthorized')
      expect(hasApiKey()).toBe(false)
      expect(router.replace).toHaveBeenCalledWith({ name: 'login' })
    })

    it('does NOT clear token on 401 for proxied v1 endpoints', async () => {
      setApiKey('secret-key')
      mockFetch.mockResolvedValue({ ok: false, status: 401, text: () => Promise.resolve('') })

      await expect(request('/api/hermes/v1/runs')).rejects.toThrow('API Error 401')
      expect(hasApiKey()).toBe(true)
    })

    it('does NOT clear token on 401 for proxied jobs endpoints', async () => {
      setApiKey('secret-key')
      mockFetch.mockResolvedValue({ ok: false, status: 401, text: () => Promise.resolve('') })

      await expect(request('/api/hermes/jobs')).rejects.toThrow('API Error 401')
      expect(hasApiKey()).toBe(true)
    })

    it('does NOT clear token on 401 for proxied skills endpoints', async () => {
      setApiKey('secret-key')
      mockFetch.mockResolvedValue({ ok: false, status: 401, text: () => Promise.resolve('') })

      await expect(request('/api/hermes/skills')).rejects.toThrow('API Error 401')
      expect(hasApiKey()).toBe(true)
    })

    it('throws error on non-401 failure', async () => {
      mockFetch.mockResolvedValue({
        ok: false,
        status: 500,
        text: () => Promise.resolve('Internal Server Error'),
      })

      await expect(request('/api/hermes/sessions')).rejects.toThrow('API Error 500: Internal Server Error')
    })

    it('returns parsed JSON on success', async () => {
      const data = { sessions: [{ id: '1' }] }
      mockFetch.mockResolvedValue({ ok: true, status: 200, json: () => Promise.resolve(data) })

      const result = await request('/api/hermes/sessions')
      expect(result).toEqual(data)
    })
  })
})