func Init()

in pkg/review/header.go [61:108]

• 44 lines of code
• 8 McCabe index (conditional complexity)

func Init() {
	if os.Getenv("GITHUB_TOKEN") == "" {
		logger.Log.Infoln("GITHUB_TOKEN is not set, license-eye won't comment on the pull request")
		return
	}

	if !IsPR() {
		return
	}
	if !IsGHA() {
		panic(fmt.Errorf("this must be run on GitHub Actions or you have to set the environment variables %v manually", requiredEnvVars))
	}

	s, err := GetSha()
	if err != nil {
		logger.Log.Warnln("failed to get sha", err)
		return
	}

	sha = s
	token := os.Getenv("GITHUB_TOKEN")
	ref := os.Getenv("GITHUB_REF")
	fullName := os.Getenv("GITHUB_REPOSITORY")
	logger.Log.Debugln("ref:", ref, "; repo:", fullName, "; sha:", sha)
	ownerRepo := strings.Split(fullName, "/")
	if len(ownerRepo) != 2 {
		logger.Log.Warnln("Length of ownerRepo is not 2", ownerRepo)
		return
	}
	owner, repo = ownerRepo[0], ownerRepo[1]
	matches := regexp.MustCompile(`refs/pull/(\d+)/merge`).FindStringSubmatch(ref)
	if len(matches) < 1 {
		logger.Log.Warnln("Length of ref < 1", matches)
		return
	}
	prString := matches[1]
	if p, err := strconv.Atoi(prString); err == nil {
		pr = p
	} else {
		logger.Log.Warnln("Failed to parse pull request number.", err)
		return
	}

	ctx = context.Background()
	ts := oauth2.StaticTokenSource(&oauth2.Token{AccessToken: token})
	tc := oauth2.NewClient(ctx, ts)
	gh = github.NewClient(tc)
}