import loggerIns from "@egg/logger"
import { NetTool } from "@egg/net-tool"
import { PathCheckTool } from "@egg/path-tool"
import { v4 as uuid } from "uuid"
import { Logger } from "winston"

export interface Context {
  req: Request
  requestId: string
  logger: Logger
  genResp: NetTool
  body: any
  text: string
  path: PathCheckTool
  searchParams: URLSearchParams
}

/**
 * 生成请求上下文。
 *
 * @param {Request} req - 请求对象。
 * @returns {Promise<Context.Data>} 返回包含请求上下文的对象。
 */
const genContext = async (req: Request) => {
  let body: any = null
  let text: string = ""
  try {
    text = await req.text()
    body = JSON.parse(text)
  } catch {
    /* empty */
  }
  const searchParams = new URL(req.url).searchParams
  const requestId = searchParams.get("requestId") || uuid()
  const logger = loggerIns.child({ requestId })
  const genResp = new NetTool({ requestId })
  const path = new PathCheckTool(req.url)

  return {
    req,
    path,
    requestId,
    logger,
    genResp,
    body,
    text,
    searchParams,
  } as Context
}

export default genContext