import axios from 'axios'

// ==================== Axios 实例 ====================

const api = axios.create({
  baseURL: '/api/v1',
  timeout: 30000,
  headers: {
    'Content-Type': 'application/json'
  }
})

// 请求拦截器 - 自动附加 Token
api.interceptors.request.use(
  config => {
    const token = localStorage.getItem('accessToken')
    if (token) {
      config.headers.Authorization = `Bearer ${token}`
    }
    return config
  },
  error => Promise.reject(error)
)

// 响应拦截器
api.interceptors.response.use(
  response => {
    const { data } = response
    if (data.code === 200) {
      return data.data
    }
    return Promise.reject(new Error(data.message || '请求失败'))
  },
  error => {
    if (error.response?.status === 401 || error.response?.status === 403) {
      localStorage.removeItem('accessToken')
      localStorage.removeItem('refreshToken')
      localStorage.removeItem('username')
      if (!window.location.pathname.includes('/login')) {
        window.location.href = '/login'
      }
    }
    const msg = error.response?.data?.message || error.message || '网络错误'
    return Promise.reject(new Error(msg))
  }
)

// ==================== 认证 API ====================

export const authApi = {
  login(data) {
    return api.post('/auth/login', { username: data.usernameOrEmail || data.username, password: data.password })
  },

  logout() {
    return api.post('/auth/logout')
  },

  refreshToken(refreshToken) {
    return api.post('/auth/refresh', { refreshToken })
  },

  getCurrentUser() {
    return api.get('/auth/me')
  },

  getPermissions() {
    return api.get('/auth/permissions')
  },

  changePassword(data) {
    return api.put('/auth/password', data)
  }
}

// ==================== 项目 API ====================

export const projectApi = {
  list(params = {}) {
    return api.get('/projects', { params })
  },

  getById(id) {
    return api.get(`/projects/${id}`)
  },

  create(data) {
    return api.post('/projects', data)
  },

  update(id, data) {
    return api.put(`/projects/${id}`, data)
  },

  delete(id) {
    return api.delete(`/projects/${id}`)
  },

  copy(id) {
    return api.post(`/projects/${id}/copy`)
  },

  archive(id) {
    return api.post(`/projects/${id}/archive`)
  },

  export(id) {
    return api.get(`/projects/${id}/export`, { responseType: 'blob' })
  },

  getDocContent(id) {
    return api.get(`/projects/${id}/doc-content`)
  }
}

// ==================== 要素 API ====================

export const elementApi = {
  list(projectId) {
    return api.get(`/projects/${projectId}/elements`)
  },

  add(projectId, data) {
    return api.post(`/projects/${projectId}/elements`, data)
  },

  update(projectId, elementId, data) {
    return api.put(`/projects/${projectId}/elements/${elementId}`, data)
  },

  delete(projectId, elementId) {
    return api.delete(`/projects/${projectId}/elements/${elementId}`)
  }
}

// ==================== 要素值 API ====================

export const valueApi = {
  list(projectId) {
    return api.get(`/projects/${projectId}/values`)
  },

  getByKey(projectId, elementKey) {
    return api.get(`/projects/${projectId}/values/${elementKey}`)
  },

  update(projectId, elementKey, data) {
    return api.put(`/projects/${projectId}/values/${encodeURIComponent(elementKey)}`, data)
  },

  batchUpdate(projectId, values) {
    return api.put(`/projects/${projectId}/values`, values)
  }
}

// ==================== 附件 API ====================

export const attachmentApi = {
  list(projectId) {
    return api.get(`/projects/${projectId}/attachments`)
  },

  getById(attachmentId) {
    return api.get(`/attachments/${attachmentId}`)
  },

  upload(projectId, file, displayName = null) {
    const formData = new FormData()
    formData.append('file', file)
    if (displayName) {
      formData.append('displayName', displayName)
    }
    return api.post(`/projects/${projectId}/attachments/upload`, formData, {
      headers: { 'Content-Type': 'multipart/form-data' }
    })
  },

  delete(attachmentId) {
    return api.delete(`/attachments/${attachmentId}`)
  },

  parse(attachmentId) {
    return api.post(`/attachments/${attachmentId}/parse`)
  },

  saveParsedContent(attachmentId, parsedText) {
    return api.put(`/attachments/${attachmentId}/parsed-content`, { parsedText })
  },

  getParsedText(attachmentId) {
    return api.get(`/attachments/${attachmentId}/parsed-text`)
  },

  parseDocx(file) {
    const formData = new FormData()
    formData.append('file', file)
    return api.post('/tools/parse-docx', formData, {
      headers: { 'Content-Type': 'multipart/form-data' },
      timeout: 120000
    })
  },

  sort(projectId, orderedIds) {
    return api.put(`/projects/${projectId}/attachments/sort`, orderedIds)
  },

  getDocContent(attachmentId) {
    return api.get(`/attachments/${attachmentId}/doc-content`)
  }
}

// ==================== 规则 API ====================

export const ruleApi = {
  list(projectId) {
    return api.get(`/projects/${projectId}/rules`)
  },

  getById(ruleId) {
    return api.get(`/rules/${ruleId}`)
  },

  create(projectId, data) {
    return api.post(`/projects/${projectId}/rules`, data)
  },

  update(ruleId, data) {
    return api.put(`/rules/${ruleId}`, data)
  },

  delete(ruleId) {
    return api.delete(`/rules/${ruleId}`)
  },

  execute(ruleId) {
    return api.post(`/rules/${ruleId}/execute`)
  },

  batchExecute(projectId) {
    return api.post(`/projects/${projectId}/rules/execute`)
  }
}

// ==================== 文件 API ====================

export const fileApi = {
  upload(file) {
    const formData = new FormData()
    formData.append('file', file)
    return api.post('/files/upload', formData, {
      headers: { 'Content-Type': 'multipart/form-data' }
    })
  },

  getDownloadUrl(fileKey) {
    return `/api/v1/files/${fileKey}`
  },

  getPreviewUrl(fileKey) {
    return `/api/v1/files/${fileKey}/preview`
  },

  delete(fileKey) {
    return api.delete(`/files/${fileKey}`)
  }
}

// ==================== 任务 API ====================

export const taskApi = {
  list(params = {}) {
    return api.get('/tasks', { params })
  },

  getById(taskId) {
    return api.get(`/tasks/${taskId}`)
  },

  cancel(taskId) {
    return api.post(`/tasks/${taskId}/cancel`)
  }
}

// ==================== 用户管理 API ====================

export const userApi = {
  list(params = {}) {
    return api.get('/users', { params })
  },

  getById(id) {
    return api.get(`/users/${id}`)
  },

  create(data) {
    return api.post('/users', data)
  },

  update(id, data) {
    return api.put(`/users/${id}`, data)
  },

  delete(id) {
    return api.delete(`/users/${id}`)
  }
}

// ==================== AI API ====================

export const aiApi = {
  extractEntities(data) {
    return api.post('/ai/ner', data)
  },

  chat(data) {
    return api.post('/ai/chat', data)
  },

  suggest(data) {
    return api.post('/ai/suggest', data)
  },

  optimize(data) {
    return api.post('/ai/optimize', data)
  }
}

// ==================== PDF 解析 API (外部服务) ====================

const parseService = axios.create({
  baseURL: 'http://47.108.80.98:4214',
  timeout: 120000
})

export const parseApi = {
  // 提交 PDF/图片解析任务
  submit(file, options = {}) {
    const formData = new FormData()
    formData.append('file', file)
    if (options.backend) formData.append('backend', options.backend)
    if (options.remove_watermark) formData.append('remove_watermark', 'true')
    if (options.crop_header_footer) formData.append('crop_header_footer', 'true')
    if (options.return_images) formData.append('return_images', 'true')
    return parseService.post('/pdf_to_markdown', formData, {
      headers: { 'Content-Type': 'multipart/form-data' }
    }).then(r => r.data)
  },

  // 查询任务状态
  getStatus(taskId) {
    return parseService.get(`/task/${taskId}`).then(r => r.data)
  },

  // 获取解析结果 JSON { markdown, filename }
  getResult(taskId) {
    return parseService.get(`/task/${taskId}/json`).then(r => r.data)
  },

  // 下载 markdown 文件
  downloadMarkdown(taskId) {
    return parseService.get(`/download/${taskId}/markdown`, { responseType: 'blob' }).then(r => r.data)
  },

  // 下载 zip 包（markdown + 图片）
  downloadZip(taskId) {
    return parseService.get(`/download/${taskId}/zip`, { responseType: 'blob' }).then(r => r.data)
  },

  // 获取解析任务的图片 URL 基础路径
  getImageBaseUrl(taskId) {
    return `http://47.108.80.98:4214/download/${taskId}/images`
  }
}

export default api