import { MiniAppAPI } from '../../model/miniAppApi';

export default function jsBridge() {
  const createInjectedFuncStr = (miniAppApis: any): string => {
    let temp = '{';
    for (let nameOrNameSpace in miniAppApis) {
      if (typeof miniAppApis[nameOrNameSpace] === 'object') {
        return (temp += `
          ${nameOrNameSpace}: ${createInjectedFuncStr(
          miniAppApis[nameOrNameSpace]
        )},
        }`);
      }
      if (typeof miniAppApis[nameOrNameSpace] === 'string') {
        temp += `
        ${nameOrNameSpace}: function(params = {}) {
          const randomId = randomPPCBPostfix();
          let promiseResolve;
          let promiseReject;
          const promise = new Promise((resolve, reject) => {
            promiseResolve = resolve;
            promiseReject = reject;
          });

          if(params.success) {
            params.successCB = 's' + randomId;
            ppCallbackMap.set(params.successCB, params.success);
          }

          if(params.fail) {
            params.failCB = 'f' + randomId;
            ppCallbackMap.set(params.failCB, params.fail);
          }

          if(params.complete) {
            params.completeCB = 'c' + randomId;
            ppCallbackMap.set(params.completeCB, params.complete);
          }
          params.originId = document.getElementById('paypaySimulatorIframeID').value;
  
          var data = {
            event: '${miniAppApis[nameOrNameSpace]}',
            payload: params
          };
          sendPPInjMessage(data);
          return promise;
        },`;
      }
    }
    return `
      ${temp}
    }`;
  };

  const libString = `
  (function(){
    let ppCallbackMap = new Map();
    function sendPPInjMessage(data) {
      parent.postMessage(JSON.stringify(data),'*');
    }
    function randomPPCBPostfix() {
      return Math.random().toString(36).substring(5) + '-' + Date.now();
    }
    window.PayPayJsBridge = window.pp = ${createInjectedFuncStr(MiniAppAPI)};
    window.addEventListener("message", function(event) {
      const data = JSON.parse(event.data);
      var ppFunctionCB = ppCallbackMap.get(data.event);
      ppFunctionCB && ppFunctionCB(data.payload);
    });
    window.addEventListener('load', function() {
      sendPPInjMessage({ event: 'pageDidLoad' });
    });
  })()
  `;
  return libString;
}