Added release workflow and application versioning

.github/workflows/release.yml

@@ -0,0 +1,57 @@
+name: Release
+
+on:
+    push:
+        tags:
+            - '*'
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/checkout@v3
+
+            - name: Set up Go
+              uses: actions/setup-go@v3
+              with:
+                  go-version: '1.20.5'
+
+            - name: Set version
+              run: echo "version=${GITHUB_REF#refs/*/}" >> "$GITHUB_ENV"
+
+            - name: Build
+              run: go build -ldflags="-X main.version=${{ env.version }} -X main.commit=$GITHUB_SHA -X main.date=$(date -u +"%Y-%m-%dT%H:%M:%SZ")" -o op
+
+            - name: Upload build artifact
+              uses: actions/upload-artifact@v2
+              with:
+                  name: openproject-cli
+                  path: op
+
+    release:
+        needs: [ build ]
+        runs-on: ubuntu-latest
+        permissions:
+            contents: write
+
+        steps:
+            - uses: actions/checkout@v2
+
+            - name: Download artifact
+              uses: actions/download-artifact@v2
+              with:
+                  name: openproject-cli
+
+            - name: Set version
+              run: echo "version=${GITHUB_REF#refs/*/}" >> "$GITHUB_ENV"
+
+            - name: Set executable flag
+              run: chmod +x op
+
+            - name: Zip executable
+              run: zip -r openproject-cli_linux_x64_${{ env.version }}.zip op
+
+            - name: Create release
+              uses: softprops/action-gh-release@v1
+              with:
+                  files: openproject-cli_linux_x64_${{ env.version }}.zip

cmd/root.go

@@ -1,13 +1,15 @@
 package cmd
 
 import (
+	"fmt"
 	"net/url"
 	"os"
-
-	"github.com/opf/openproject-cli/cmd/create"
+	"runtime"
+	"time"
 
 	"github.com/spf13/cobra"
 
+	"github.com/opf/openproject-cli/cmd/create"
 	"github.com/opf/openproject-cli/cmd/inspect"
 	"github.com/opf/openproject-cli/cmd/list"
 	"github.com/opf/openproject-cli/cmd/update"
@@ -17,15 +19,33 @@ import (
 	"github.com/opf/openproject-cli/components/routes"
 )
 
+var showVersionFlag bool
+
 var rootCmd = &cobra.Command{
 	Use:   os.Args[0],
 	Short: "An easy-to-use CLI for the OpenProject APIv3",
 	Long: `OpenProject CLI is a fast, reliable and easy-to-use
 tool to manage your work packages, notifications and
 projects of your OpenProject instance.`,
+	Run: func(cmd *cobra.Command, args []string) {
+		if showVersionFlag {
+			versionText := fmt.Sprintf(
+				"%s: %s\n\tcommit: %s\n\tbuilt: %s\n\tbuilt with: %s",
+				"OpenProject CLI",
+				configuration.CliVersion.Version,
+				configuration.CliVersion.Commit,
+				configuration.CliVersion.Date.Format(time.UnixDate),
+				runtime.Version(),
+			)
+
+			fmt.Println(printer.Yellow(versionText))
+		}
+	},
 }
 
-func Execute() error {
+func Execute(version *configuration.Version) error {
+	configuration.Init(version)
+
 	return rootCmd.Execute()
 }
 
@@ -46,6 +66,14 @@ func init() {
 	requests.Init(parse, token)
 	routes.Init(parse)
 
+	rootCmd.Flags().BoolVarP(
+		&showVersionFlag,
+		"version",
+		"",
+		false,
+		"Show version information of the OpenProject CLI",
+	)
+
 	rootCmd.AddCommand(
 		loginCmd,
 		list.RootCmd,

components/configuration/cli_version.go

@@ -0,0 +1,32 @@
+package configuration
+
+import "time"
+
+type Version struct {
+	Version string
+	Commit  string
+	Date    time.Time
+}
+
+var CliVersion *Version
+
+func Init(version *Version) {
+	CliVersion = version
+}
+
+func BuildCliVersion(version string, commit string, date string) *Version {
+	buildCommit := string([]rune(commit)[:7])
+
+	var buildDate time.Time
+	if date == "unknown" {
+		buildDate = time.Now()
+	} else {
+		buildDate, _ = time.Parse(time.RFC3339, date)
+	}
+
+	return &Version{
+		Version: version,
+		Commit:  buildCommit,
+		Date:    buildDate,
+	}
+}

main.go

@@ -5,10 +5,19 @@ import (
 	"os"
 
 	"github.com/opf/openproject-cli/cmd"
+	"github.com/opf/openproject-cli/components/configuration"
+)
+
+var (
+	version = "current"
+	commit  = "none"
+	date    = "unknown"
 )
 
 func main() {
-	if err := cmd.Execute(); err != nil {
+	cliVersion := configuration.BuildCliVersion(version, commit, date)
+
+	if err := cmd.Execute(cliVersion); err != nil {
 		_, _ = fmt.Fprintln(os.Stderr, err)
 		os.Exit(1)
 	}