text: /*
      Copyright 2021 Rustici Software
  
      Licensed under the Apache License, Version 2.0 (the "License");
      you may not use this file except in compliance with the License.
      You may obtain a copy of the License at
  
          http://www.apache.org/licenses/LICENSE-2.0
  
      Unless required by applicable law or agreed to in writing, software
      distributed under the License is distributed on an "AS IS" BASIS,
      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      See the License for the specific language governing permissions and
      limitations under the License.
  */
  import Cmi5 from "@rusticisoftware/cmi5";
  
  const Helpers = {
      storeResult: (success, isError, addtl = {}) => {
          const resultElement = document.createElement("pre");
  
          resultElement.id = "result";
  
          resultElement.innerHTML = JSON.stringify(
              {
                  success,
                  isError,
                  ...addtl
              },
              null,
              4 // eslint-disable-line no-magic-numbers
          );
  
          document.body.appendChild(resultElement);
      },
      initCmi5: () => {
          let cmi5;
  
          try {
              cmi5 = new Cmi5(window.document.location.href);
          }
          catch (ex) {
              Helpers.storeResult(false, true, {msg: `Failed to construct Cmi5 object: ${ex}`});
  
              return;
          }
  
          return cmi5;
      },
      initAU: async () => {
          let cmi5;
  
          try {
              cmi5 = Helpers.initCmi5();
              if (! cmi5) {
                  return;
              }
  
              await cmi5.start();
          }
          catch (ex) {
              Helpers.storeResult(false, true, {msg: `Failed to initialize AU: ${ex}`});
  
              return;
          }
  
          return cmi5;
      },
      closeAU: async (cmi5, loadReturnURL = false) => {
          try {
              await cmi5.terminate();
          }
          catch (ex) {
              Helpers.storeResult(false, true, {msg: `Failed to terminate AU: ${ex}`});
  
              return;
          }
  
          try {
              const returnURL = cmi5.getReturnURL();
  
              if (returnURL !== null) {
                  if (! loadReturnURL) {
                      const returnUrlBtn = document.createElement("button");
  
                      returnUrlBtn.id = "returnURL";
                      returnUrlBtn.innerHTML = "Click to load LMS returnURL";
  
                      returnUrlBtn.addEventListener(
                          "click",
                          () => {
                              window.document.location.href = returnURL;
                          }
                      );
  
                      document.body.appendChild(returnUrlBtn);
                  }
                  else {
                      window.document.location.href = returnURL;
                  }
              }
          }
          catch (ex) {
              Helpers.storeResult(false, true, {msg: `Failed to handle returnURL: ${ex}`});
          }
      },
      sendStatement: async (cmi5, st, reqId, cfg = {}) => {
          try {
              const endpoint = cmi5.getEndpoint();
              let url = `${endpoint}/statements`;
  
              if (cfg.method !== "post") {
                  url += "?" + new URLSearchParams(
                      {
                          statementId: st.id
                      }
                  );
              }
  
              const authHeader = cmi5.getAuth(),
                  stResponse = await fetch(
                      url,
                      {
                          method: cfg.method || "PUT",
                          mode: "cors",
                          headers: {
                              "X-Experience-API-Version": "1.0.3",
                              Authorization: authHeader,
                              "Content-Type": "application/json"
                          },
                          body: JSON.stringify(st)
                      }
                  ),
                  stContent = await stResponse.text();
  
              if (cfg.shouldSucceed) {
                  if (stResponse.status === 204 || stResponse.status === 200) {
                      return true;
                  }
  
                  Helpers.storeResult(false, false, {reqId: "4.2.0.0-2", msg: `Statement should have succeeded, response status code: ${stResponse.status} ${stContent} (Testing ${reqId})`});
  
                  return false;
              }
  
              if (cfg.debug) {
                  console.log(reqId, stContent);
              }
  
              if (stResponse.status === 204 || stResponse.status === 200) {
                  Helpers.storeResult(false, false, {reqId, msg: `Statement not rejected (${stResponse.status})`});
  
                  return false;
              }
              // this treats non-401 and non-403 (like 400, 500, etc.) as not acceptable responses
              // for denying the statement
              // eslint-disable-next-line no-magic-numbers
              else if (stResponse.status !== 401 && stResponse.status !== 403) {
                  Helpers.storeResult(false, false, {reqId: "4.2.0.0-2", msg: `Statement request status code: ${stResponse.status} ${stContent} (Testing ${reqId})`});
  
                  return false;
              }
          }
          catch (ex) {
              // request should succeed, but provide a 401 or 403, so an exception here is an error
              Helpers.storeResult(false, true, {reqId, msg: `Failed request to store statement: ${ex}`});
  
              return false;
          }
  
          return true;
      },
      stateRequest: async (cmi5, method, stateId, body) => {
          try {
              const requestCfg = {
                  method,
                  mode: "cors",
                  headers: {
                      "X-Experience-API-Version": "1.0.3",
                      Authorization: cmi5.getAuth()
                  }
              };
  
              if (body) {
                  requestCfg.headers["Content-Type"] = "application/json";
                  requestCfg.body = body;
              }
  
              const response = await fetch(
                      `${cmi5.getEndpoint()}/activities/state?` + new URLSearchParams(
                          {
                              agent: JSON.stringify(cmi5.getActor()),
                              activityId: cmi5.getActivityId(),
                              registration: cmi5.getRegistration(),
                              stateId
                          }
                      ),
                      requestCfg
                  ),
                  responseContent = await response.text();
  
              // expect the first request to be not found because it hasn't been written yet
              if (response.status === 404 && method === "get") {
                  return;
              }
  
              if (response.status !== 200 && response.status !== 204) {
                  Helpers.storeResult(false, true, {msg: `State request failed (${response.status}): ${responseContent}`});
  
                  return false;
              }
  
              if (method === "get") {
                  return responseContent;
              }
          }
          catch (ex) {
              Helpers.storeResult(false, true, {msg: `Failed request to State API: ${ex}`});
  
              return false;
          }
  
          return true;
      }
  };
  
  export default Helpers;
  