feat: add validate-config command (#61)

cmd/missed-blocks-checker.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"main/pkg"
+	configPkg "main/pkg/config"
 	"main/pkg/fs"
 	"main/pkg/logger"
 	"os"
@@ -24,21 +25,45 @@ func (fs *OsFS) Create(path string) (fs.File, error) {
 	return os.Create(path)
 }
 
-func Execute(configPath string) {
+func ExecuteMain(configPath string) {
 	filesystem := &OsFS{}
 	app := pkg.NewApp(configPath, filesystem, version)
 	app.Start()
 }
 
+func ExecuteValidateConfig(configPath string) {
+	filesystem := &OsFS{}
+
+	config, err := configPkg.GetConfig(configPath, filesystem)
+	if err != nil {
+		logger.GetDefaultLogger().Fatal().Err(err).Msg("Could not load config!")
+	}
+
+	if err := config.Validate(); err != nil {
+		logger.GetDefaultLogger().Fatal().Err(err).Msg("Config is invalid!")
+	}
+
+	logger.GetDefaultLogger().Info().Msg("Provided config is valid.")
+}
+
 func main() {
 	var ConfigPath string
 
 	rootCmd := &cobra.Command{
-		Use:     "missed-blocks-checker",
+		Use:     "missed-blocks-checker --config [config path]",
 		Long:    "Monitors validators' missed blocks on Cosmos chains.",
 		Version: version,
 		Run: func(cmd *cobra.Command, args []string) {
-			Execute(ConfigPath)
+			ExecuteMain(ConfigPath)
+		},
+	}
+
+	validateConfigCmd := &cobra.Command{
+		Use:     "validate-config --config [config path]",
+		Long:    "Validate config.",
+		Version: version,
+		Run: func(cmd *cobra.Command, args []string) {
+			ExecuteValidateConfig(ConfigPath)
 		},
 	}
 
@@ -47,6 +72,13 @@ func main() {
 		logger.GetDefaultLogger().Fatal().Err(err).Msg("Could not set flag as required")
 	}
 
+	validateConfigCmd.PersistentFlags().StringVar(&ConfigPath, "config", "", "Config file path")
+	if err := validateConfigCmd.MarkPersistentFlagRequired("config"); err != nil {
+		logger.GetDefaultLogger().Fatal().Err(err).Msg("Could not set flag as required")
+	}
+
+	rootCmd.AddCommand(validateConfigCmd)
+
 	if err := rootCmd.Execute(); err != nil {
 		logger.GetDefaultLogger().Fatal().Err(err).Msg("Could not start application")
 	}