import axios from 'axios'

const api = axios.create({
  baseURL: '/api',
  timeout: 10000,
  headers: {
    'Content-Type': 'application/json'
  }
})

// Request interceptor to add JWT token
api.interceptors.request.use(
  (config) => {
    const token = localStorage.getItem('token')
    if (token) {
      config.headers.Authorization = `Bearer ${token}`
    }
    return config
  },
  (error) => {
    return Promise.reject(error)
  }
)

// Response interceptor for error handling
api.interceptors.response.use(
  (response) => {
    return response.data
  },
  (error) => {
    // Handle 401 Unauthorized - redirect to login
    if (error.response?.status === 401) {
      localStorage.removeItem('token')
      // Only redirect if not already on login page
      if (window.location.pathname !== '/login') {
        window.location.href = '/login'
      }
    }
    const message = error.response?.data?.error || error.message || '请求失败'
    return Promise.reject(new Error(message))
  }
)

// Auth API
export const authApi = {
  login: (data) => api.post('/auth/login', data),
  me: () => api.get('/auth/me')
}

// Admin API
export const adminApi = {
  getAll: () => api.get('/admins'),
  getById: (id) => api.get(`/admins/${id}`),
  create: (data) => api.post('/admins/create', data),
  update: (data) => api.post('/admins/update', data),
  delete: (id) => api.post('/admins/delete', { id })
}

// Person API
export const personApi = {
  getAll: () => api.get('/persons'),
  getById: (id) => api.get(`/persons/${id}`),
  create: (data) => api.post('/persons/create', data),
  update: (data) => api.post('/persons/update', data),
  delete: (id) => api.post('/persons/delete', { id })
}

// Item API
export const itemApi = {
  getAll: () => api.get('/items'),
  getById: (id) => api.get(`/items/${id}`),
  create: (data) => api.post('/items/create', data),
  update: (data) => api.post('/items/update', data),
  delete: (id) => api.post('/items/delete', { id })
}

// Work Record API
export const workRecordApi = {
  getAll: (params) => api.get('/work-records', { params }),
  getById: (id) => api.get(`/work-records/${id}`),
  create: (data) => api.post('/work-records/create', data),
  update: (data) => api.post('/work-records/update', data),
  delete: (id) => api.post('/work-records/delete', { id }),
  getDailySummary: (params) => api.get('/work-records/daily-summary', { params }),
  getMonthlySummary: (params) => api.get('/work-records/monthly-summary', { params })
}

// Export API - uses axios directly to handle blob responses
export const exportApi = {
  monthly: (year, month) => {
    const token = localStorage.getItem('token')
    return axios.get('/api/export/monthly', {
      params: { year, month },
      responseType: 'blob',
      headers: token ? { Authorization: `Bearer ${token}` } : {}
    })
  },
  yearly: (year) => {
    const token = localStorage.getItem('token')
    return axios.get('/api/export/yearly', {
      params: { year },
      responseType: 'blob',
      headers: token ? { Authorization: `Bearer ${token}` } : {}
    })
  }
}

// Import API - uses axios directly to handle blob/multipart responses
export const importApi = {
  downloadTemplate: () => {
    const token = localStorage.getItem('token')
    return axios.get('/api/import/template', {
      responseType: 'blob',
      headers: token ? { Authorization: `Bearer ${token}` } : {}
    })
  },
  upload: (file) => {
    const token = localStorage.getItem('token')
    const formData = new FormData()
    formData.append('file', file)
    return axios.post('/api/import/upload', formData, {
      headers: {
        'Content-Type': 'multipart/form-data',
        ...(token ? { Authorization: `Bearer ${token}` } : {})
      }
    })
  }
}

export default api