import { fetchEventSource } from '@microsoft/fetch-event-source'
import tokenManager from '@gold/utils/token-manager'
import BaiLianService from './bailian'
import { API_BASE } from '@gold/config/api'

// 百炼API基础路径
const TIKHUB_BASE = API_BASE.TIKHUB_APP || API_BASE.TIKHUB || ''

// 应用层通用服务
export const CommonService = {
  /**
   * 视频转字符（音频转文字）
   */
  videoToCharacters(data) {
    return BaiLianService.videoToCharacters(data)
  },

  /**
   * 调用工作流
   */
  callWorkflow(data) {
    return BaiLianService.callWorkflow(data)
  },

  /**
   * 流式调用工作流（SSE）
   */
  async callWorkflowStream(options) {
    const {
      data,
      ctrl,
      onMessage,
      onError,
      onClose
    } = options || {}

    const authHeader = tokenManager.getAuthHeader()

    let retryCount = 0
    const maxRetries = 0

    return fetchEventSource(`${TIKHUB_BASE}/callWorkflow`, {
      method: 'post',
      headers: {
        'Content-Type': 'application/json',
        ...(authHeader ? { Authorization: authHeader } : {})
      },
      openWhenHidden: true,
      body: JSON.stringify(data),
      onmessage: onMessage,
      onerror: (err) => {
        retryCount++

        if (typeof onError === 'function') {
          onError(err)
        }

        if (retryCount > maxRetries) {
          throw err
        }
      },
      onclose: () => {
        if (typeof onClose === 'function') {
          onClose()
        }
      },
      signal: ctrl ? ctrl.signal : undefined
    })
  }
}

export default CommonService