import { request } from '@/utils/request'
import { API_BASE } from '@/config'

/** 导出参数 */
export interface ExportParams {
  startDate: string
  endDate: string
  type?: 'expense' | 'income' | 'all'
  format?: 'csv' | 'json'
}

/** 请求服务端导出（返回流） */
export function requestExport(params: ExportParams) {
  return request<{ downloadUrl: string }>({
    url: '/export',
    data: { ...params, format: params.format || 'csv' }
  })
}

/** 获取服务端导出下载 URL */
export function getExportUrl(params: ExportParams): string {
  const query = new URLSearchParams()
  query.set('startDate', params.startDate)
  query.set('endDate', params.endDate)
  if (params.type) query.set('type', params.type)
  if (params.format) query.set('format', params.format)

  const token = uni.getStorageSync('xc:token')
  if (token) query.set('token', token)

  return `${API_BASE}/export?${query.toString()}`
}