feat: add version command

cmd/version/generate.go

@@ -0,0 +1,83 @@
+package main
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"io/fs"
+	"log"
+	"os"
+	"path"
+	"runtime"
+
+	"github.com/0xJacky/Nginx-UI/app"
+)
+
+type VersionInfo struct {
+	Version    string `json:"version"`
+	BuildId    int    `json:"build_id"`
+	TotalBuild int    `json:"total_build"`
+}
+
+func main() {
+	_, file, _, ok := runtime.Caller(0)
+	if !ok {
+		log.Print("Unable to get the current file")
+		return
+	}
+	basePath := path.Join(path.Dir(file), "../../")
+
+	versionFile, err := app.DistFS.Open("dist/version.json")
+	if err != nil {
+		if errors.Is(err, fs.ErrNotExist) {
+			log.Print("\"dist/version.json\" not found, load from src instead")
+			versionFile, err = os.Open(path.Join(basePath, "app/src/version.json"))
+		}
+
+		if err != nil {
+			log.Fatal(err)
+			return
+		}
+	}
+
+	defer func(versionFile fs.File) {
+		err := versionFile.Close()
+		if err != nil {
+			log.Fatal(err)
+		}
+	}(versionFile)
+
+	// Read the version.json file
+	data, err := io.ReadAll(versionFile)
+	if err != nil {
+		log.Fatalf("Failed to read version.json: %v", err)
+	}
+
+	// Parse the JSON data
+	var versionInfo VersionInfo
+	err = json.Unmarshal(data, &versionInfo)
+	if err != nil {
+		log.Fatalf("Failed to parse JSON: %v", err)
+	}
+
+	// Generate the version.gen.go file content
+	genContent := fmt.Sprintf(`// Code generated by cmd/version/generate.go; DO NOT EDIT.
+
+package version
+
+func init() {
+	Version = "%s"
+	BuildId = %d
+	TotalBuild = %d
+}
+`, versionInfo.Version, versionInfo.BuildId, versionInfo.TotalBuild)
+
+	genPath := path.Join(basePath, "internal/version/version.gen.go")
+	err = os.WriteFile(genPath, []byte(genContent), 0644)
+	if err != nil {
+		log.Fatalf("Failed to write version.gen.go: %v", err)
+	}
+
+	fmt.Println("version.gen.go has been generated successfully.")
+}