// This file is solely used for the automatically run GitHub job, which checks to
// see if all HU LTS code is working properly (at least on an Ubuntu machine).

const axios = require('axios');
const puppeteer = require('puppeteer');

const testEndpoint = async (url) => {
  try {
    const response = await axios.get(url);
    return response.status === 200;
  } catch (error) {
    console.error(`Error while testing ${url}:`, error.message);
    return false;
  }
};

const testGeneratedUrl = async (url, headers) => {
  try {
    console.log(`Testing generated URL: ${url}`);

    const response = await axios.get(url, { headers });
    console.log(`Response status for ${url}: ${response.status}`);
    return response.status === 200;
  } catch (error) {
    console.error(`Error while testing generated URL ${url}:`, error.message);
    return false;
  }
};

const testServerResponse = async () => {
  const endpoints = [
    'http://localhost:8080/',
    'http://localhost:8080/test-404',
    'http://localhost:8080/browsing',
    'http://localhost:8080/rammerhead',
    'http://localhost:8080/ultraviolet',
    'http://localhost:8080/documentation',
    'http://localhost:8080/questions',
    'http://localhost:8080/s',
    'http://localhost:8080/credits',
    'http://localhost:8080/bookmarklets',
    'http://localhost:8080/terms',
    'http://localhost:8080/games',
    'http://localhost:8080/web-games',
    'http://localhost:8080/emulators',
    'http://localhost:8080/flash-games',
    'http://localhost:8080/retro-games',
    'http://localhost:8080/youtube',
    'http://localhost:8080/apps',
    'http://localhost:8080/flash',
    'http://localhost:8080/webretro',
    'http://localhost:8080/vibe-os',
    'http://localhost:8080/assets/js/particlesjs/particles.js',
    'http://localhost:8080/assets/js/bareTransport.js',
    'http://localhost:8080/assets/js/card.js',
    'http://localhost:8080/assets/js/common-16451543478.js',
    'http://localhost:8080/assets/js/csel.js',
    'http://localhost:8080/assets/js/register-sw.js',
    'http://localhost:8080/assets/json/emu-nav.json',
    'http://localhost:8080/assets/json/blacklist.json',
    'http://localhost:8080/assets/json/emulib-nav.json',
    'http://localhost:8080/assets/json/flash-nav.json',
    'http://localhost:8080/assets/json/h5-nav.json',
    'http://localhost:8080/assets/json/links.json',
    'http://localhost:8080/baremux/index.js',
    'http://localhost:8080/baremux/worker.js',
    'http://localhost:8080/epoxy/index.mjs',
    'http://localhost:8080/uv/uv.bundle.js',
    'http://localhost:8080/uv/sw.js',
    'http://localhost:8080/uv/uv.config.js',
    'http://localhost:8080/uv/workerware.js',
    'http://localhost:8080/uv/WWError.js',
  ];

  const results = await Promise.all(endpoints.map(testEndpoint));
  const allPassed = results.every((result) => result);

  if (allPassed) {
    console.log('All endpoints responded with status code 200. Test passed.');
    await testCommonJSOnPage();
  } else {
    console.error(
      'One or more endpoints failed to respond with status code 200. Test failed.'
    );
    process.exitCode = 1;
  }
};

const testCommonJSOnPage = async () => {
  const browser = await puppeteer.launch({
    args: [
      '--enable-features=NetworkService',
      '--enable-features=ServiceWorker',
      '--enable-features=InsecureOrigins',
    ],
    headless: true,
    ignoreHTTPSErrors: true,
  });
  const page = await browser.newPage();

  try {
    const getHeaders = async () => {
      const headers = {};

      headers['User-Agent'] = await page.evaluate(() => navigator.userAgent);
      headers['Referer'] = await page.evaluate(() => window.location.href);

      return headers;
    };

    const generateUrl = async (omniboxId, urlPath, errorPrefix = 'failure') => {
      // Wait for the document to load before getting the omnibox.
      await new Promise((resolve) => {
        if (document.readyState === 'complete') resolve();
        else window.addEventListener('load', resolve);
      });

      let omnibox = document.getElementById(omniboxId);
      omnibox = omnibox && omnibox.querySelector('input[type=text]');

      if (omnibox) {
        try {
          // Send an artificial input to the omnibox. The omnibox will create
          // a proxy URL and leave it as the input value in response.
          omnibox.value = urlPath;
          const generateInput = async () => {
            await omnibox.dispatchEvent(
              new KeyboardEvent('keydown', { code: 'Validator Test' })
            );
          };
          /* Keep trying to send a signal every 5 seconds until it works.
           * Implemented to account for a condition where the document has
           * finished loading, but the event handler for DOMContentLoaded has
           * not finished executing its script to listen for artificial inputs.
           */
          await generateInput();
          const inputInterval = setInterval(generateInput, 5000),
            resolveHandler = (resolve) => () => {
              clearInterval(inputInterval);
              resolve(omnibox.value);
            },
            // Wait up to 40 seconds for the omnibox to finish updating.
            loadUrl = new Promise((resolve) => {
              if (omnibox.value !== urlPath) resolveHandler(resolve)();
              else omnibox.addEventListener('change', resolveHandler(resolve));
            }),
            timeout = new Promise((resolve) => {
              setTimeout(resolveHandler(resolve), 40000);
            }),
            // Return the proxy URL that the omnibox left here.
            generatedUrl = await Promise.race([loadUrl, timeout]);
          return generatedUrl !== urlPath ? generatedUrl : errorPrefix;
        } catch (e) {
          return errorPrefix + ': ' + e.message;
        }
      } else {
        return errorPrefix + ': omnibox not defined';
      }
    };

    const testRammerhead = async () => {
      const omniboxId = 'pr-rh',
        urlPath = 'example.com';
      await page.goto('http://localhost:8080/rammerhead');
      const generatedUrl = await page.evaluate(generateUrl, omniboxId, urlPath);
      const testResults = {};
      testResults.rammerhead = generatedUrl;

      console.log('Rammerhead test results:', testResults);

      const headers = await getHeaders();
      const rammerheadTestPassed =
        testResults.rammerhead !== 'failure' &&
        (await testGeneratedUrl(testResults.rammerhead, headers));

      console.log(
        `Rammerhead test result: ${
          rammerheadTestPassed ? 'success' : 'failure'
        }`
      );

      return rammerheadTestPassed;
    };

    /*

                                                     xx   
  xx                                            xx    
   xxx                                        xx      
     xxx                                     xx       
       xxx                                  xx        
         xxx                              xx          
            xx                           xx           
             xx                         xx            
                                       xx             
                                      xx              
                                                      
                                                      
                                                      
                                                      
               x                    x                 
                                                      
                                                      
                                                      
                                                      
                                                      
                                                      
                        xxxxxxxxxxxxxxx               
             xxxxxxxxxxxx              xxxxx          
          xxxx                              xxx       
       xxx                                    xxx     
     xxx                                        xx    
    xx                                           xx   
   xx                                             xx  
 xxx                                               x  
 xx                                                 x 
xx                                                  xx

*/

    const testUltraviolet = async () => {
      const omniboxId = 'pr-uv',
        errorPrefix = 'failure',
        // For the hacky URL test further below, use the URL page's EXACT title.
        website = Object.freeze({
          path: 'example.com',
          title: 'Example Domain',
        });
      await page.goto('http://localhost:8080/ultraviolet');
      const generatedUrl = await page.evaluate(
        generateUrl,
        omniboxId,
        website.path,
        errorPrefix
      );

      const testResults = await page.evaluate(
        async (generatedUrl, pageTitle) => {
          const results = [{}, {}];

          await new Promise((resolve) => {
            const waitForDocument = () => {
                if (document.readyState === 'complete') resolve();
                else window.addEventListener('load', resolve);
              },
              // Wait until a service worker is registered before continuing.
              // Also check again to make sure the document is loaded.
              waitForWorker = async () => {
                setTimeout(async () => {
                  (await navigator.serviceWorker.getRegistrations()).length > 0
                    ? waitForDocument()
                    : waitForWorker();
                }, 1000);
              };

            waitForWorker();
          });

          try {
            results[0].ultraviolet = generatedUrl;

            // Test to see if the document title for example.com has loaded,
            // by appending an IFrame to the document and grabbing its content.
            const testGeneratedUrlHacky = async (url) => {
              const exampleIFrame = document.createElement('iframe');
              const waitForDocument = new Promise((resolve) => {
                document.documentElement.appendChild(exampleIFrame);
                exampleIFrame.addEventListener('load', () => {
                  resolve(
                    exampleIFrame.contentWindow.document.title === pageTitle
                  );
                });
              });

              // Give 10 seconds for the IFrame to load before manually checking.
              const timeout = new Promise((resolve) => {
                setTimeout(() => {
                  resolve(
                    exampleIFrame.contentWindow.document.title === pageTitle
                  );
                }, 10000);
              });

              exampleIFrame.src = url;
              exampleIFrame.style.display = 'none';
              return await Promise.race([waitForDocument, timeout]);
            };

            results[1].uvTestPassed =
              !!results[0].ultraviolet.indexOf(errorPrefix) &&
              (await testGeneratedUrlHacky(results[0].ultraviolet));
          } catch (e) {
            results[0].ultraviolet = errorPrefix + ': ' + e.message;
          }

          return results;
        },
        generatedUrl,
        website.title,
        errorPrefix
      );

      console.log('Ultraviolet test results:', testResults[0]);

      if (
        testResults[0].ultraviolet &&
        testResults[0].ultraviolet !== 'failure'
      ) {
        const uvTestPassed = testResults[1].uvTestPassed;
        console.log(
          `Ultraviolet test result: ${uvTestPassed ? 'success' : 'failure'}`
        );
        return uvTestPassed;
      } else {
        console.log(`Ultraviolet test result: failure`);
        return false;
      }
    };

    // Run tests for Rammerhead and Ultraviolet.
    const rammerheadPassed = await testRammerhead();
    const ultravioletPassed = await testUltraviolet();

    if (rammerheadPassed && ultravioletPassed) {
      console.log('Both tests passed.');
      process.exitCode = 0;
    } else {
      console.error('Tests failed.');
      process.exitCode = 1;
    }
  } catch (error) {
    console.error('Error in testCommonJSOnPage:', error.message);
    process.exitCode = 1;
  } finally {
    await browser.close();
  }
};

testServerResponse();