func downloadAndInstallIDE()

in internal/core/startup/installers.go [42:125]
75 lines of code
24 McCabe index (conditional complexity)

func downloadAndInstallIDE(
	analyser product.Analyzer,
	baseDir string,
	spinner *pterm.SpinnerPrinter,
) string {
	var ideUrl string
	checkSumUrl := ""

	releaseDownloadInfo := getIde(analyser)
	if releaseDownloadInfo == nil {
		log.Fatalf("Error while obtaining the URL for the supplied IDE, exiting")
	} else {
		ideUrl = releaseDownloadInfo.Link
		checkSumUrl = releaseDownloadInfo.ChecksumLink
	}

	fileName := filepath.Base(ideUrl)
	fileExt := filepath.Ext(fileName)
	installDir := filepath.Join(baseDir, strings.TrimSuffix(fileName, fileExt))
	if _, err := os.Stat(installDir); err == nil {
		switch runtime.GOOS {
		case "windows":
			if dirs, err := filepath.Glob(filepath.Join(installDir, "*")); err == nil && len(dirs) == 1 {
				installDir = dirs[0]
			}
		case "darwin":
			if dirs, err := filepath.Glob(filepath.Join(installDir, "*.app")); err == nil && len(dirs) == 1 {
				installDir = filepath.Join(dirs[0], "Contents")
			}
		}
		log.Debugf("IDE already installed to %s, skipping download", installDir)
		return installDir
	}

	downloadedIdePath := filepath.Join(baseDir, fileName)
	err := utils.DownloadFile(downloadedIdePath, ideUrl, getInternalAuth(), spinner)
	if err != nil {
		log.Fatalf("Error while downloading linter: %v", err)
	}

	defer func(filePath string) {
		err = os.Remove(filePath)
		if err != nil {
			log.Warning("Error while removing temporary file: " + err.Error())
		}
	}(downloadedIdePath)

	if checkSumUrl != "" {
		checksumFilePath := filepath.Join(baseDir, strings.TrimSuffix(fileName, fileExt)+".sha256")
		verifySha256(checksumFilePath, checkSumUrl, downloadedIdePath)
	}

	switch fileExt {
	case ".sit":
		err = installIdeFromZip(downloadedIdePath, installDir)
	case ".zip":
		err = installIdeFromZip(downloadedIdePath, installDir)
	case ".exe":
		err = installIdeWindowsExe(downloadedIdePath, installDir)
	case ".gz":
		err = installIdeFromTar(downloadedIdePath, installDir)
	case ".dmg":
		err = installIdeMacOS(downloadedIdePath, installDir)
	default:
		log.Fatalf("Unsupported file extension: %s", fileExt)
	}

	if err != nil {
		log.Fatalf("Error while unpacking: %v", err)
	}

	switch runtime.GOOS {
	case "windows":
		if dirs, err := filepath.Glob(filepath.Join(installDir, "*")); err == nil && len(dirs) == 1 {
			installDir = dirs[0]
		}
	case "darwin":
		if dirs, err := filepath.Glob(filepath.Join(installDir, "*.app")); err == nil && len(dirs) == 1 {
			installDir = filepath.Join(dirs[0], "Contents")
		}
	}

	return installDir
}