feat: Automatically calculate the current version number through Git…

Makefile

@@ -31,6 +31,12 @@ endif
 
 # If you encounter an error like "panic: permission denied" on MacOS,
 # please visit https://github.com/eisenxp/macos-golink-wrapper to find the solution.
+
+.PHONY: gen-version
+gen-version: ## Generate version file
+	# Update version
+	-cd pkg/version/scripts && go run gen/gen.go
+
 .PHONY: test
 test:  ## Run the tests
 	@PKG_LIST=$${TARGET_PKG:-$(GOSOURCE_PATHS)}; \
@@ -84,6 +90,7 @@ build-all: build-darwin build-linux build-windows ## Build for all platforms
 #   make build-darwin GOARCH=arm64 SKIP_UI_BUILD=true
 .PHONY: build-darwin
 build-darwin: $(BUILD_UI) ## Build for MacOS (Darwin)
+	$(MAKE) gen-version
 	-rm -rf ./_build/darwin
 	GOOS=darwin GOARCH=$(GOARCH) CGO_ENABLED=$(CGO_ENABLED) \
 		go build -o ./_build/darwin/$(APPROOT) \
@@ -99,6 +106,7 @@ build-darwin: $(BUILD_UI) ## Build for MacOS (Darwin)
 #   make build-linux GOARCH=arm64 SKIP_UI_BUILD=true
 .PHONY: build-linux
 build-linux: $(BUILD_UI) ## Build for Linux
+	$(MAKE) gen-version
 	-rm -rf ./_build/linux
 	GOOS=linux GOARCH=$(GOARCH) CGO_ENABLED=$(CGO_ENABLED) \
 		go build -o ./_build/linux/$(APPROOT) \
@@ -114,6 +122,7 @@ build-linux: $(BUILD_UI) ## Build for Linux
 #   make build-windows GOARCH=arm64 SKIP_UI_BUILD=true
 .PHONY: build-windows
 build-windows: $(BUILD_UI) ## Build for Windows
+	$(MAKE) gen-version
 	-rm -rf ./_build/windows
 	GOOS=windows GOARCH=$(GOARCH) CGO_ENABLED=$(CGO_ENABLED) \
 		go build -o ./_build/windows/$(APPROOT).exe \
@@ -124,6 +133,7 @@ build-windows: $(BUILD_UI) ## Build for Windows
 # Usage: make build-ui
 .PHONY: build-ui
 build-ui: ## Build UI for the dashboard
+	$(MAKE) gen-version
 	@echo "Building UI for the dashboard ..."
 	cd ui && npm install && npm run build && touch build/.gitkeep
 

pkg/util/gitutil/gitutil.go

@@ -0,0 +1,38 @@
+package gitutil
+
+import (
+	"bytes"
+	"os/exec"
+	"strings"
+)
+
+// RunGitCommand runs a git command and returns the output as a string
+func runGitCommand(args ...string) (string, error) {
+	cmd := exec.Command("git", args...)
+	var out bytes.Buffer
+	cmd.Stdout = &out
+	if err := cmd.Run(); err != nil {
+		return "", err
+	}
+	return strings.TrimSpace(out.String()), nil
+}
+
+// GetLatestTag returns the latest tag from Git
+func GetLatestTag() (string, error) {
+	return runGitCommand("describe", "--tags", "--abbrev=0")
+}
+
+// GetCurrentCommit returns the current commit SHA
+func GetCurrentCommit() (string, error) {
+	return runGitCommand("rev-parse", "--short", "HEAD")
+}
+
+// GetCurrentHead returns the current HEAD SHA
+func GetCurrentHead() (string, error) {
+	return runGitCommand("rev-parse", "HEAD")
+}
+
+// GetTagCommit returns the commit SHA for a given tag
+func GetTagCommit(tag string) (string, error) {
+	return runGitCommand("rev-list", "-n", "1", tag)
+}

pkg/version/scripts/gen/gen.go

@@ -0,0 +1,68 @@
+//go:build ignore
+// +build ignore
+
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"strings"
+
+	"github.com/KusionStack/karpor/pkg/util/gitutil"
+	"github.com/KusionStack/karpor/pkg/version"
+)
+
+func calculateVersion() (string, error) {
+	latestTag, err := gitutil.GetLatestTag()
+	if err != nil {
+		fmt.Println("Error getting latest tag:", err)
+		return "v0.1.0", nil
+	}
+	currentCommit, err := gitutil.GetCurrentCommit()
+	if err != nil {
+		fmt.Println("Error getting current commit:", err)
+		return "", err
+	}
+	currentHead, err := gitutil.GetCurrentHead()
+	if err != nil {
+		fmt.Println("Error getting current head:", err)
+		return "", err
+	}
+	tagCommit, err := gitutil.GetTagCommit(latestTag)
+	if err != nil {
+		fmt.Println("Error getting tag commit:", err)
+		return "", err
+	}
+	if currentHead == tagCommit {
+		return latestTag, nil
+	}
+	return fmt.Sprintf("%s-g%s", latestTag, currentCommit), nil
+}
+
+func main() {
+	currentDir, err := os.Getwd()
+	versionStr, err := calculateVersion()
+	if err != nil {
+		fmt.Println("Error calculating version:", err)
+		os.Exit(1)
+	}
+	version := version.Version{Version: versionStr}
+
+	rootDir := strings.Replace(currentDir, "/pkg/version/scripts", "", 1)
+	versionFilePath := filepath.Join(rootDir, "pkg", "version", "VERSION")
+
+	// Ensure the pkg/version directory exists
+	err = os.MkdirAll(filepath.Dir(versionFilePath), 0755)
+	if err != nil {
+		fmt.Println("Error creating version directory:", err)
+		os.Exit(1)
+	}
+	// Write the version to the VERSION file, replacing any existing content
+	err = os.WriteFile(versionFilePath, []byte(version.Version+"\n"), 0644)
+	if err != nil {
+		fmt.Println("Error writing version file:", err)
+		os.Exit(1)
+	}
+	fmt.Println("Version file updated to:", version.Version)
+}

pkg/version/types.go

@@ -0,0 +1,5 @@
+package version
+
+type Version struct {
+	Version string `json:"version"`
+}