import http from '@ohos.net.http';
import convertxml from '@ohos.convertxml';
import { BusinessError } from '@ohos.base';
import promptAction from '@ohos.promptAction';
import { RequestTag } from '../config';
import Prompt from '@system.prompt';

interface RequestOption {
  url: string
  data?: object | string
  xml: boolean
  method: http.RequestMethod
  host?: string
  isNewCenter?: boolean
  timeout?: number
  accept?: boolean
}


function xmlToJSON(target: string): object {
  console.log("进入xml解析")
  let conv = new convertxml.ConvertXML()
  const result: object = conv.convertToJSObject(target, {
    trim: false,
    declarationKey: "_declaration",
    instructionKey: "_instruction",
    attributesKey: "_attributes",
    textKey: "_text",
    cdataKey: "_cdata",
    doctypeKey: "_doctype",
    commentKey: "_comment",
    parentKey: "_parent",
    typeKey: "_type",
    nameKey: "_name",
    elementsKey: "_elements",
  })
  console.log("xml解析完成", JSON.stringify(result))
  return transfer(result['_elements'])
}

function setObj(target: Record<string, object>, key: string, value: object) {
  target[key] = value
}

function transfer(target: Array<object>, name?: string): object {
  const result: Record<string, ESObject> = {}; // 使用 Record 类型以便动态添加属性
  target.forEach((el: ESObject) => {
    const _elements: Array<object> = el['_elements'];
    if (el['_type'] === "element") {
      if (_elements === undefined) {
        return;
      }
      const jsonObj: ESObject = result[el['_name']];
      const handleCommonArray = (obj: object) => {
        if (Array.isArray(jsonObj)) {
          jsonObj.push(obj);
        } else {
          result[el['_name']] = [jsonObj, obj];
        }
      };

      if (_elements && _elements.length && _elements[0]['_type'] === 'text') {
        if (jsonObj) {
          handleCommonArray(_elements[0]['_text']);
        } else {
          result[el['_name']] = _elements[0]['_text'];
        }
      } else {
        if (jsonObj) {
          handleCommonArray(transfer(el['_elements'], el['_name']));
        } else {
          result[el['_name']] = transfer(el['_elements'], el['_name']);
        }
      }
    } else if (el['_attributes'] && name) {
      result[name] = {
        value: el['_text'],
        attributes: el['_attributes'], // 修复属性名
      };
    }
  });
  return result;
}

interface CenterCodeResult {
  code: string
  message?: string
  keystr?: string
}

function dealCenterCode(message: string, isNewCenter: boolean = false): CenterCodeResult | undefined {
  if (isNewCenter) {
    const msg: object = JSON.parse(message);
    const result: object = msg?.['data'][0]?.result;
    if (result) {
      if (result['code'] != '1') {
        const rMessage = decodeURIComponent(message as string)
        promptAction.showToast({
          message: rMessage,
          duration: 3000
        });
        let returnResult: CenterCodeResult = {
          code: result['code'] as string,
          message: result['message'] as string,
        }
        return returnResult
      } else {
        let returnResult: CenterCodeResult = {
          code: result['code'] as string,
          keystr: result['retval'] as string,
        }
        return returnResult
      }
    }
  }
  const result = parseXml(message)
  if (result.code != '1') {
    Prompt.showToast({
      message: decodeURIComponent(message as string),
      duration: 3000
    });
    return { code: result.code, message: decodeURIComponent(result.message || "") } as CenterCodeResult
  } else {
    return result
  }
}

function parseXml(xml: string) {
  const codeRegex = new RegExp("<code>(.*?)<\\/code>");
  const messageRegex = new RegExp("<message>(.*?)<\\/message>");
  const keystrRegex = new RegExp("<keystr>(.*?)<\\/keystr>");

  const codeMatch = xml.match(codeRegex);
  const messageMatch = xml.match(messageRegex);
  const keystrMatch = xml.match(keystrRegex);

  return {
    code: codeMatch ? codeMatch[1] : null,
    message: messageMatch ? messageMatch[1] : null,
    keystr: keystrMatch ? keystrMatch[1] : null,
  } as CenterCodeResult;
}

type RequestResult = Object | object | string | CenterCodeResult

export default function Request<T extends RequestResult>(options: RequestOption): Promise<T> {
  return new Promise((resolve, reject) => {
    const base: string = options.host ? options.host : AppStorage.get<string>("host") || "http://127.0.0.1"
    const instance = http.createHttp()
    const baseURL = options.host || base
    console.log(RequestTag, "基础url:", baseURL)
    console.log(RequestTag, "参数", JSON.stringify(options.data))
    instance.request(baseURL + options.url, {
      method: options.method,
      header: {
        "Content-Type": options.xml ? "text/xml" : 'application/json',
        "Accept": options.accept ? "application/json" : "*/*",
      },
      extraData: options.xml ? options.data : JSON.stringify(options.data),
      readTimeout: options.timeout || 30 * 1000
    }).then(async data => {
      console.log(RequestTag, baseURL, options.url, "返回的数据", JSON.stringify(data))
      console.log(RequestTag, baseURL, options.url, "入参", options.accept, "xml", options.xml)
      let result = options.xml ? (options.accept ? data.result : xmlToJSON(data.result as string)) : data.result;
      console.log("结束xml解析", JSON.stringify(result))
      let resObj: object = new Object()
      if (typeof result === 'string') {
        result = JSON.parse(result)
      }
      if (result['Envelope'] !== undefined) {
        const msgXml: string = result['Envelope']['Body']['writeObjectOutResponse']['return'];
        resolve(dealCenterCode(msgXml, options.isNewCenter) as T)
        return
      }
      if (!options.xml || (options.xml && options.accept)) {
        if (result['head']['resultCode'] === '0') {
          resolve(result as T)
          return
        } else {
          const resultMessage: string = result?.['body']?.['resultMessage'] || result?.['head']?.['resultMessage']
          promptAction.showToast({
            message: decodeURIComponent(resultMessage),
            duration: 3000
          });
          reject(false)
          return
        }
      }

      Object.values(result).forEach((item: object) => {
        resObj = item['head']
      })
      if (resObj['resultCode'] === '0') {
        resolve(result as T)
        return
      } else {
        promptAction.showToast({
          message: decodeURIComponent(resObj['resultMessage']),
          duration: 3000
        });
        reject(result)
      }

    }).catch((err: BusinessError) => {
      console.error(RequestTag, "出错的url:", baseURL, options.url, "错误信息:", JSON.stringify(err))
      if (!err || !(err?.message)) {
        reject({
          code: -1
        })
      }
      promptAction.showToast({
        message: err?.message,
        duration: 5000
      });
      reject({
        code: err.code
      })
    })
      .finally(() => {
        instance.destroy()
      })
  })
}