From 232caedbedf801c6ccb7d6cf3eef133c91f1c76d Mon Sep 17 00:00:00 2001
From: Shunta Komatsu <shuntak217@gmail.com>
Date: Sun, 2 Aug 2020 21:57:12 +0900
Subject: [PATCH] :sparkles: Add --remove flag to hook command

---
 cli/hook.go               | 21 +++++++++++++++++++++
 cmd/gmoji/cmd/cmd_hook.go | 18 ++++++++++++++++++
 2 files changed, 39 insertions(+)

diff --git a/cli/hook.go b/cli/hook.go
index d38a0af..9747a45 100644
--- a/cli/hook.go
+++ b/cli/hook.go
@@ -3,6 +3,7 @@ package cli
 import (
 	"fmt"
 	"io/ioutil"
+	"os"
 	"path/filepath"
 
 	"github.com/fatih/color"
@@ -28,6 +29,26 @@ gmoji --hook $1
 	return nil
 }
 
+// RemoveHook removes the commit hook.
+func (c CLI) RemoveHook() error {
+	p, err := c.hookPath()
+	if err != nil {
+		return err
+	}
+
+	if _, err := os.Stat(p); os.IsNotExist(err) {
+		return fmt.Errorf("%s does not exist", p)
+	}
+
+	if err := os.Remove(p); err != nil {
+		return err
+	}
+
+	fmt.Printf("%s\n", color.GreenString("gmoji commit hook removed successfully"))
+
+	return nil
+}
+
 func (c CLI) hookPath() (string, error) {
 	gitRoot, err := c.GitRoot()
 	if err != nil {
diff --git a/cmd/gmoji/cmd/cmd_hook.go b/cmd/gmoji/cmd/cmd_hook.go
index 065e4ae..6ba077f 100644
--- a/cmd/gmoji/cmd/cmd_hook.go
+++ b/cmd/gmoji/cmd/cmd_hook.go
@@ -5,12 +5,28 @@ import (
 	"github.com/spf13/cobra"
 )
 
+// HookOptions represents the options for hook command.
+type HookOptions struct {
+	Remove bool
+}
+
+var (
+	hookOptions HookOptions
+)
+
 func runHook(cmd *cobra.Command, args []string) error {
 	c, err := cli.NewCLI()
 	if err != nil {
 		return err
 	}
 
+	if hookOptions.Remove {
+		if err := c.RemoveHook(); err != nil {
+			return err
+		}
+		return nil
+	}
+
 	if err := c.Hook(); err != nil {
 		return err
 	}
@@ -26,5 +42,7 @@ var hookCmd = &cobra.Command{
 }
 
 func init() {
+	hookCmd.Flags().BoolVarP(&hookOptions.Remove, "remove", "r", false, "remove the commit hook")
+
 	rootCmd.AddCommand(hookCmd)
 }