From 6ab5957956e7250d18dcb10c637942d7788081b6 Mon Sep 17 00:00:00 2001
From: Hau Nguyen <hauvipapro@gmail.com>
Date: Tue, 31 May 2022 18:09:18 +0700
Subject: [PATCH] feat: add command version

---
 README.md                       |  2 +-
 go.mod                          |  1 +
 go.sum                          |  2 ++
 internal/cli/action.go          | 17 ++++++++++++++++
 internal/cli/action_generate.go |  2 +-
 internal/cli/app.go             | 35 ++++++++++++++++++++-------------
 6 files changed, 43 insertions(+), 16 deletions(-)

diff --git a/README.md b/README.md
index 5fc06b6..45411aa 100644
--- a/README.md
+++ b/README.md
@@ -13,7 +13,7 @@ Tool to generate `CHANGELOG.md`, `CHANGELOG.rst` from [Conventional Commits](htt
 - [x] Interactive mode
 - [ ] Unit test
 - [ ] Auto generate commit after gen CHANGELOG
-- [ ] Add version command
+- [x] Add version command
 
 ## Install
 
diff --git a/go.mod b/go.mod
index 3f825d4..6e10813 100644
--- a/go.mod
+++ b/go.mod
@@ -5,6 +5,7 @@ go 1.18
 require (
 	github.com/go-git/go-git/v5 v5.4.2
 	github.com/haunt98/clock-go v0.3.0
+	github.com/make-go-great/buildinfo-go v0.0.1
 	github.com/make-go-great/color-go v0.3.0
 	github.com/make-go-great/ioe-go v0.4.0
 	github.com/make-go-great/markdown-go v0.5.0
diff --git a/go.sum b/go.sum
index f72f0d9..9581015 100644
--- a/go.sum
+++ b/go.sum
@@ -56,6 +56,8 @@ github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
 github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
+github.com/make-go-great/buildinfo-go v0.0.1 h1:cMqVGVttHXC1hilwJxzZfyTF2LTvx5G6QAaFVG0KEHo=
+github.com/make-go-great/buildinfo-go v0.0.1/go.mod h1:neEb4WWRyUmzQvlMqvrjiDexkS+QXZMq2B5yXLe4GS8=
 github.com/make-go-great/color-go v0.3.0 h1:ZVtVk/wVVsZZwSJG7PZpsY5zwIyGao5VoN48yKfSzYA=
 github.com/make-go-great/color-go v0.3.0/go.mod h1:G5G8IJ3PUo+vSQ+UvnfaswF8O/piVIhFJKv1mQjBGpI=
 github.com/make-go-great/ioe-go v0.4.0 h1:abRH8J01am7A9VsinEG0WnXDiT1CWk7Cd0auRvWuNyQ=
diff --git a/internal/cli/action.go b/internal/cli/action.go
index d2c6bdd..00cd4c0 100644
--- a/internal/cli/action.go
+++ b/internal/cli/action.go
@@ -1,8 +1,10 @@
 package cli
 
 import (
+	"fmt"
 	"log"
 
+	"github.com/make-go-great/buildinfo-go"
 	"github.com/urfave/cli/v2"
 )
 
@@ -33,6 +35,21 @@ type action struct {
 	}
 }
 
+func (a *action) RunVersion(c *cli.Context) error {
+	info, ok := buildinfo.Read()
+	if !ok {
+		return nil
+	}
+
+	version := info.GitCommit
+	if info.GitTag != "" {
+		version = info.GitTag
+	}
+
+	fmt.Println(version)
+	return nil
+}
+
 func (a *action) RunHelp(c *cli.Context) error {
 	return cli.ShowAppHelp(c)
 }
diff --git a/internal/cli/action_generate.go b/internal/cli/action_generate.go
index 1d0e7eb..6d0eeb7 100644
--- a/internal/cli/action_generate.go
+++ b/internal/cli/action_generate.go
@@ -28,7 +28,7 @@ func (a *action) RunGenerate(c *cli.Context) error {
 			return cli.ShowAppHelp(c)
 		}
 	} else {
-		fmt.Printf("Input version (%s):\n", usageVersion)
+		fmt.Printf("Input version (%s):\n", usageFlagVersion)
 		a.flags.version = ioe.ReadInput()
 
 		fmt.Printf("Input from (%s):\n", usageFrom)
diff --git a/internal/cli/app.go b/internal/cli/app.go
index 41f64fc..4d434ef 100644
--- a/internal/cli/app.go
+++ b/internal/cli/app.go
@@ -24,23 +24,25 @@ const (
 	flagInteractive = "interactive"
 
 	commandGenerate = "generate"
+	commandVersion  = "version"
 
-	usageGenerate    = "generate changelog"
-	usageVerbose     = "show what is going on"
-	usageVersion     = "`VERSION` to generate, follow Semantic Versioning"
-	usageFrom        = "from `COMMIT`, which is kinda new commit, default is latest commit"
-	usageTo          = "to `COMMIT`, which is kinda old commit, default is oldest commit"
-	usageScope       = "scope to generate"
-	usageRepository  = "`REPOSITORY` directory path"
-	usageOutput      = "`OUTPUT` directory path"
-	usageFilename    = "output `FILENAME`"
-	usageFiletype    = "output `FILETYPE`"
-	usageDryRun      = "demo run without actually changing anything"
-	usageInteractive = "interactive mode, default is true"
+	usageGenerate       = "generate changelog"
+	usageCommandVersion = "version of changeloguru"
+	usageVerbose        = "show what is going on"
+	usageFlagVersion    = "`VERSION` to generate, follow Semantic Versioning"
+	usageFrom           = "from `COMMIT`, which is kinda new commit, default is latest commit"
+	usageTo             = "to `COMMIT`, which is kinda old commit, default is oldest commit"
+	usageScope          = "scope to generate"
+	usageRepository     = "`REPOSITORY` directory path"
+	usageOutput         = "`OUTPUT` directory path"
+	usageFilename       = "output `FILENAME`"
+	usageFiletype       = "output `FILETYPE`"
+	usageDryRun         = "demo run without actually changing anything"
+	usageInteractive    = "interactive mode, default is true"
 )
 
 var (
-	aliasGenerate    = []string{"gen"}
+	aliasGenerate    = []string{"g, gen"}
 	aliasVerbose     = []string{"v"}
 	aliasInteractive = []string{"i"}
 )
@@ -68,7 +70,7 @@ func NewApp() *App {
 					},
 					&cli.StringFlag{
 						Name:  flagVersion,
-						Usage: usageVersion,
+						Usage: usageFlagVersion,
 					},
 					&cli.StringFlag{
 						Name:  flagFrom,
@@ -115,6 +117,11 @@ func NewApp() *App {
 				},
 				Action: a.RunGenerate,
 			},
+			{
+				Name:   commandVersion,
+				Usage:  usageCommandVersion,
+				Action: a.RunVersion,
+			},
 		},
 		Action: a.RunHelp,
 	}