Addressed issues per request

main.go

@@ -22,8 +22,7 @@ import (
 // Config holds the application configuration
 type Config struct {
 	RepositoryPath string
-	CheckPaths     bool `envconfig:"default=true"`
-	CheckOwners    bool `envconfig:"default=true"`
+	Checks         []string `envconfig:"optional"`
 	Github         struct {
 		AccessToken string `envconfig:"optional"`
 		BaseURL     string `envconfig:"optional"`
@@ -35,8 +34,6 @@ type Config struct {
 
 func main() {
 	var cfg Config
-	var checks []check.Checker
-	var ghClient *github.Client
 	err := envconfig.Init(&cfg)
 	fatalOnError(err)
 
@@ -46,55 +43,30 @@ func main() {
 	defer cancelFunc()
 	cancelOnInterrupt(ctx, cancelFunc)
 
-	// check are the both checks disabled
-	if !cfg.CheckPaths && !cfg.CheckOwners {
-		log.Error("No checks requested. Please set CHECK_PATHS or CHECK_OWNERS. Aborting...")
-		fatalOnError(err)
-	}
-	fatalOnError(err)
-
 	// init codeowners entries
 	codeownersEntries, err := codeowners.NewFromPath(cfg.RepositoryPath)
 	fatalOnError(err)
 
-<<<<<<< HEAD
-<<<<<<< HEAD
-	if cfg.CheckPaths {
-=======
-	if cfg.CheckPaths == true {
->>>>>>> Adding more checks for team permissions. Adding more ENV variables
-=======
-	if cfg.CheckPaths {
->>>>>>> Fixed comparison to bool constant
-		checks = []check.Checker{
-			check.NewFileExist(),
-		}
+	// init checks
+	var checks []check.Checker
+
+	if isEnabled(cfg.Checks, "files") {
+		checks = append(checks, check.NewFileExist())
 	}
 
-<<<<<<< HEAD
-<<<<<<< HEAD
-	if cfg.CheckOwners {
-=======
-	if cfg.CheckOwners == true {
->>>>>>> Adding more checks for team permissions. Adding more ENV variables
-=======
-	if cfg.CheckOwners {
->>>>>>> Fixed comparison to bool constant
+	if isEnabled(cfg.Checks, "owners") {
+		// init GitHub client
 		httpClient := http.DefaultClient
 		if cfg.Github.AccessToken != "" {
 			httpClient = oauth2.NewClient(ctx, oauth2.StaticTokenSource(
 				&oauth2.Token{AccessToken: cfg.Github.AccessToken},
 			))
 		}
 
-		ghClient, err = newGithubClient(cfg, httpClient)
+		ghClient, err := newGithubClient(cfg, httpClient)
 		fatalOnError(err)
 
-		checks = []check.Checker{
-			check.NewFileExist(),
-			check.NewValidOwner(cfg.OwnerChecker, ghClient),
-		}
-
+		checks = append(checks, check.NewValidOwner(cfg.OwnerChecker, ghClient))
 	}
 
 	// run check runner
@@ -113,6 +85,27 @@ func main() {
 	}
 }
 
+func isEnabled(checks []string, name string) bool {
+	// if a user does not specify concrete checks then all checks are enabled
+	if len(checks) == 0 {
+		return true
+	}
+
+	if contains(checks, name) {
+		return true
+	}
+	return false
+}
+
+func contains(checks []string, name string) bool {
+	for _, c := range checks {
+		if c == name {
+			return true
+		}
+	}
+	return false
+}
+
 func newGithubClient(cfg Config, httpClient *http.Client) (ghClient *github.Client, err error) {
 	baseURL, uploadURL := cfg.Github.BaseURL, cfg.Github.UploadURL