refactor: remove init function from cmd files

.gitignore

@@ -22,6 +22,7 @@ vendor/
 .env
 config.yaml
 .air.toml
+.siren.yaml
 bin/air
 tmp
 dist/

cmd/config.go

@@ -0,0 +1,68 @@
+package cmd
+
+import (
+	"fmt"
+	"io/ioutil"
+
+	"github.com/spf13/cobra"
+	"gopkg.in/yaml.v3"
+)
+
+var (
+	DefaultHost   = "localhost"
+	FileName      = ".siren"
+	FileExtension = "yaml"
+)
+
+type configuration struct {
+	Host string `yaml:"host"`
+}
+
+func configCommand() *cobra.Command {
+	cmd := &cobra.Command{
+		Use:   "config",
+		Short: "manage siren CLI configuration",
+	}
+	cmd.AddCommand(configInitCommand())
+	return cmd
+}
+
+func configInitCommand() *cobra.Command {
+	return &cobra.Command{
+		Use:   "init",
+		Short: "initialize CLI configuration",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			config := configuration{
+				Host: DefaultHost,
+			}
+
+			b, err := yaml.Marshal(config)
+			if err != nil {
+				return err
+			}
+
+			filepath := fmt.Sprintf("%v.%v", FileName, FileExtension)
+			if err := ioutil.WriteFile(filepath, b, 0655); err != nil {
+				return err
+			}
+			fmt.Printf("config created: %v", filepath)
+
+			return nil
+		},
+	}
+}
+
+func readConfig() (*configuration, error) {
+	var c configuration
+	filepath := fmt.Sprintf("%v.%v", FileName, FileExtension)
+	b, err := ioutil.ReadFile(filepath)
+	if err != nil {
+		return nil, err
+	}
+
+	if err := yaml.Unmarshal(b, &c); err != nil {
+		return nil, err
+	}
+
+	return &c, nil
+}

cmd/migrate.go

@@ -6,15 +6,13 @@ import (
 	"github.com/spf13/cobra"
 )
 
-func init() {
-	rootCmd.AddCommand(&cobra.Command{
+func migrateCommand() *cobra.Command {
+	return &cobra.Command{
 		Use:   "migrate",
-		Short: "Run DB migrations",
-		RunE:  migrate,
-	})
-}
-
-func migrate(cmd *cobra.Command, args []string) error {
-	c := config.LoadConfig()
-	return app.RunMigrations(c)
+		Short: "Migrate database schema",
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c := config.LoadConfig()
+			return app.RunMigrations(c)
+		},
+	}
 }

cmd/root.go

@@ -7,12 +7,17 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var rootCmd = &cobra.Command{
-	Use: "siren",
-}
-
 // Execute runs the command line interface
 func Execute() {
+	rootCmd := &cobra.Command{
+		Use: "siren",
+	}
+
+	rootCmd.AddCommand(configCommand())
+	rootCmd.AddCommand(serveCommand())
+	rootCmd.AddCommand(migrateCommand())
+	rootCmd.AddCommand(uploadCommand())
+
 	if err := rootCmd.Execute(); err != nil {
 		fmt.Fprintln(os.Stderr, err)
 		os.Exit(1)

cmd/serve.go

@@ -6,15 +6,13 @@ import (
 	"github.com/spf13/cobra"
 )
 
-func init() {
-	rootCmd.AddCommand(&cobra.Command{
+func serveCommand() *cobra.Command {
+	return &cobra.Command{
 		Use:   "serve",
 		Short: "Run server",
-		RunE:  serve,
-	})
-}
-
-func serve(cmd *cobra.Command, args []string) error {
-	c := config.LoadConfig()
-	return app.RunServer(c)
+		RunE: func(cmd *cobra.Command, args []string) error {
+			c := config.LoadConfig()
+			return app.RunServer(c)
+		},
+	}
 }

cmd/upload.go

@@ -3,18 +3,19 @@ package cmd
 import (
 	"errors"
 	"fmt"
+
 	"github.com/odpf/siren/client"
 	"github.com/odpf/siren/config"
 	"github.com/odpf/siren/pkg/uploader"
 	"github.com/spf13/cobra"
 )
 
-func init() {
-	rootCmd.AddCommand(&cobra.Command{
+func uploadCommand() *cobra.Command {
+	return &cobra.Command{
 		Use:   "upload",
 		Short: "Upload Rules or Templates YAML file",
 		RunE:  upload,
-	})
+	}
 }
 
 func upload(cmd *cobra.Command, args []string) error {