(function () {
  if (!window.cet || !window.cet.microservices || !window.cet.microservices.apiready) {
    window.cet = window.cet || {};
    cet.microservices = cet.microservices || {};

    let apiready = new Promise(function (resolve, reject) {
      var scriptElement = document.createElement("script");
      scriptElement.addEventListener('load', resolve);
      scriptElement.addEventListener('error', reject);
      var origin = document.currentScript.src.split('/', 3).join('/');
      scriptElement.src = origin + "/provider/ApiProvider.js?8dc3062e1069100";
      document.head.appendChild(scriptElement);
    });
    cet.microservices.apiready = apiready;
  }
  let selfUrl = document.currentScript.src;
  cet.microservices.apiready.then(() => {
    cet.microservices.api.system.addService(selfUrl);
  });
})();

window.cet = window.cet || {};
window.cet.microservices = window.cet.microservices || {};

cet.microservices.nairobiapi = (function () {
  const isSafe = true;

  // in order to call 'safe' api safely, load authapi in a promise:
    const accessManagementApiReady = isSafe ? cet.microservices.apiready.then(() => {
        if (cet.accessmanagement) {
            return Promise.resolve();
        }
        else {
            return cet.microservices.api.loadApi("/accessmngapi/provider/accessmanagement.js", "apigateway");
        }
    }) : cet.microservices.apiready;

  const settings = {
    apiUrl: "/nairobiapi/"
  };

  const isDevEnvironment = (location.host.indexOf('.dev') > 0 || location.host.indexOf('.testing') > 0);

  const baseURI = new URL(document.currentScript.src).origin;

  /*------------------------------------------------------------------------------*/
  /* Build URL query from the given payload object. */
  const buildQueryFromPayload = function (payload) {
    if (payload && typeof payload === 'object') {
      var str = [];

      for (var p in payload) {
        if (payload.hasOwnProperty(p)) {
          if (Array.isArray(payload[p])) {
            for (var i = 0; i < payload[p].length; i++) {
              str.push(encodeURIComponent(p) + "=" + encodeURIComponent(payload[p][i]));
            }
          } else {
            str.push(encodeURIComponent(p) + "=" + encodeURIComponent(payload[p]));
          }
        }
      }

      return str.length > 0 ? '?' + str.join('&') : '';
    }

    return '';
  };

  /*------------------------------------------------------------------------------*/
  /* Validate single parameter. */
  const validateParameter = function (pName, pValue) {
    if ((typeof pValue === 'string' && pValue.trim().length === 0) ||
      (Array.isArray(pValue) && pValue.length === 0)) {
      return pName + ' cannot be empty';
    }

    return '';
  };

  /*------------------------------------------------------------------------------*/
  /* Validate request object. */
  const validateRequest = function (request, relevantParameters) {
    if (!request) {
      return 'request data is missing';
    }

    for (var i = 0; i < relevantParameters.length; i++) {
      var param = relevantParameters[i];
      var paramParts = param.split('.');

      var subRequest = request;

      if (paramParts.length > 1) {
        for (var p = 0; p < paramParts.length - 1; p++) {
          subRequest = subRequest && subRequest[paramParts[p]];
          param = paramParts[p + 1];
        }
      }

      if (!subRequest || !subRequest.hasOwnProperty(param)) {
        return relevantParameters[i] + ' is missing';
      } else {
        var error = validateParameter(relevantParameters[i], subRequest[param]);

        if (error) {
          return error;
        }
      }
    }

    return '';
  };

  /*------------------------------------------------------------------------------*/
  const processRequest = (request) => {
    var promise = new Promise(function (resolve, reject) {
      var validationErrorMsg = request.validationParams ? validateRequest(request.data, request.validationParams) : '';
      if (validationErrorMsg) {
        isDevEnvironment && alert(validationErrorMsg);
        reject({
          'name': 'ProviderValidationError',
          'message': validationErrorMsg
        });
      } else {
        accessManagementApiReady.then(async () => {
          try {
            var result = null;
            var _cetms = isSafe ? cetms.safe : cetms;

            if (request.type === 'get') {
              result = await _cetms.get(request.URL + buildQueryFromPayload(request.data));
            } else if (request.type === 'post') {
              result = await _cetms.post(request.URL, request.data, request.options);
            }

            resolve(result);
          } catch (error) {
            reject(error);
          }
        }).catch(error => {
          reject(error);
        });
      }
    });

    return promise;
  };

  //#region Site

  const getLabels = (requestData) => {
    return processRequest({
      type: 'get',
      URL: settings.apiUrl + 'Label/GetLabels',
      data: requestData
    });
  };

  const setLabels = (requestData) => {
    return processRequest({
      type: 'post',
      URL: settings.apiUrl + 'Label/SetLabels',
      data: requestData
    });
  };

  const getPage = (requestData) => {
    return processRequest({
      type: 'get',
      URL: settings.apiUrl + 'Pages/GetPage',
      data: requestData,
      validationParams: ['language', 'pageKey']
    });
  };

  const setPage = (requestData) => {
    return processRequest({
      type: 'post',
      URL: settings.apiUrl + 'Pages/SetPage',
      data: requestData,
      validationParams: ['lang', 'pageKey']
    });
  };

  //#endregion

  //#region systemMessages

  const getMessages = (requestData) => {
    return processRequest({
      type: 'get',
      URL: settings.apiUrl + 'SystemMessages/GetMessages',
      data: requestData,
      validationParams: ['language']
    });
  };

  const getMessagesByType = (requestData) => {
    return processRequest({
      type: 'get',
      URL: settings.apiUrl + 'SystemMessages/GetMessagesByType',
      data: requestData,
      validationParams: ['language', 'type']
    });
  };

  const getMessagesByDate = (requestData) => {
    return processRequest({
      type: 'get',
      URL: settings.apiUrl + 'SystemMessages/GetMessagesByDate',
      data: requestData,
      validationParams: ['language', 'date']
    });
  };

  const setMessage = (requestData) => {
    return processRequest({
      type: 'post',
      URL: settings.apiUrl + 'SystemMessages/SetMessage',
      data: requestData
    });
  };

  //#endregion

  //#region Site

  const getFiltersItemTypes = () => {
    return processRequest({
      type: 'get',
      URL: settings.apiUrl + 'Filters/GetFiltersItemTypes',
      data: {}
    });
  };

  //#endregion

  //#region fileUpload

  const upload = (requestData) => {
      var formData = new FormData();
      formData.append('container', requestData.container);
      formData.append('prefix', requestData.prefix);
      formData.append('uploadFile', requestData.file);

      return processRequest({
          type: 'post',
          URL: settings.apiUrl + 'FileUpload/Upload',
          data: formData
      });
  };

  const getUrls = (requestData) => {
      return processRequest({
          type: 'get',
          URL: settings.apiUrl + 'FileUpload/GetUrls',
          data: requestData,
          validationParams: ['container', 'prefix']
      });
  };

  //#endregion


   //#region banners

    const getBanners = (requestData) => {
        return processRequest({
            type: 'post',
            URL: settings.apiUrl + 'Banners/GetBanners',
            data: requestData
        });
    };

    const setBanner = (requestData) => {
        return processRequest({
            type: 'post',
            URL: settings.apiUrl + 'Banners/SetBanner',
            data: requestData,
            validationParams: ['bannerType']
        });
    };

    const setBanners = (requestData) => {
        return processRequest({
            type: 'post',
            URL: settings.apiUrl + 'Banners/SetBanners',
            data: requestData
        });
    };

    const deleteBanner = (requestData) => {
        return processRequest({
            type: 'post',
            URL: settings.apiUrl + 'Banners/DeleteBanner',
            data: requestData,
            validationParams: ['id']
        });
    };

   //#endregion


  return {
    label: {
      getLabels: getLabels,
      setLabels: setLabels
    },
    pages: {
      getPage: getPage,
      setPage: setPage
    },
    systemMessages: {
      getMessages: getMessages,
      getMessagesByType: getMessagesByType,
      getMessagesByDate: getMessagesByDate,
      setMessage: setMessage
    },
    filters: {
      getFiltersItemTypes
    },
    fileUpload: {
        upload: upload,
        getUrls: getUrls
    },
    banners: {
        getBanners: getBanners,
        setBanner: setBanner,
        setBanners: setBanners,
        deleteBanner: deleteBanner
    }
  };
})();