Added config validation

main.go

@@ -404,6 +404,14 @@ func sendMail(cfg *Config, recipients []string, subject, html string) ([]Postmar
 	return results, nil
 }
 
+func ComplainEmpty(val string, complaint string) bool {
+	if val == "" {
+		fmt.Println(complaint)
+		return false
+	}
+	return true
+}
+
 func main() {
 	/* Read in credentials into Config struct */
 	/* *** */
@@ -422,6 +430,31 @@ func main() {
 		os.Exit(1)
 	}
 
+	if config.BatchSize == 0 {
+		config.BatchSize = 500
+	}
+
+	validConfig := true
+
+	validConfig = ComplainEmpty(config.TestEmail, "* Test email address is missing in config") && validConfig
+	validConfig = ComplainEmpty(config.HMC.ApiUrl, "* HMC API url is missing in config") && validConfig
+	validConfig = ComplainEmpty(config.HMC.SharedSecret, "* HMC Shared secret is missing in config") && validConfig
+	validConfig = ComplainEmpty(config.HMC.City, "* HMC City is missing in config") && validConfig
+	validConfig = ComplainEmpty(config.Postmark.ServerToken, "* Postmark server token is missing in config") && validConfig
+	validConfig = ComplainEmpty(config.Postmark.ApiUrl, "* Postmark API url is missing in config") && validConfig
+	if config.Postmark.TemplateId == 0 {
+		fmt.Println("* Postmark template ID is missing in config")
+		validConfig = false
+	}
+	validConfig = ComplainEmpty(config.Postmark.SenderName, "* Sender name is missing in config") && validConfig
+	validConfig = ComplainEmpty(config.Postmark.SenderEmail, "* Sender email is missing in config") && validConfig
+	validConfig = ComplainEmpty(config.Postmark.MessageStream, "* Postmark message stream is missing in config") && validConfig
+
+	if !validConfig {
+		fmt.Println("Please fix your config and try again")
+		os.Exit(1)
+	}
+
 	/* Setup Cobra */
 	/* *** */
 	cmd := &cobra.Command{