add version

Makefile

@@ -1,13 +1,14 @@
 PROJECTNAME="m3ujson"
 BUILD_DIRECTORY="bin"
+VERSION=${shell grep "const AppVersion" main.go | cut -d '"' -f 2}
 
 clean:
 	@echo "  >  Clean directory..."
 	@rm -rf bin
 
 build: clean
 	@echo "  >  Building binary..."
-	@go build -o ${BUILD_DIRECTORY}/${PROJECTNAME}
+	@go build -o ${BUILD_DIRECTORY}/${PROJECTNAME}-${VERSION}
 
 run:
 	@echo "  >  Run..."
@@ -16,6 +17,6 @@ run:
 compile: clean
 	@echo "  >  Build binary all arch..."
 	@echo "+linux amd64"
-	@GOOS=linux GOARCH=amd64 go build -o ${BUILD_DIRECTORY}/${PROJECTNAME}-linux-amd64
+	@GOOS=linux GOARCH=amd64 go build -ldflags "-s -w" -o ${BUILD_DIRECTORY}/${PROJECTNAME}-${VERSION}-linux-amd64
 	@echo "+mipsle"
-	@GOOS=linux GOARCH=mipsle go build -o ${BUILD_DIRECTORY}/${PROJECTNAME}-mipsle
+	@GOOS=linux GOARCH=mipsle go build -ldflags "-s -w" -o ${BUILD_DIRECTORY}/${PROJECTNAME}-${VERSION}-mipsle

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"os"
 	"encoding/json"
 	"errors"
 	"flag"
@@ -12,6 +13,9 @@ import (
 	"strings"
 )
 
+// AppVersion application version
+const AppVersion = "1.0.0"
+
 // provider is variable of provider name like Edem, etc
 var provider string
 
@@ -65,9 +69,15 @@ func convertToStruct(m3u []byte) ([]TVChannel, error) {
 }
 
 func main() {
+	version := flag.Bool("version", false, "Show version and exit")
 	flag.StringVar(&provider, "p", "Edem", "Provider name")
 	flag.Parse()
 
+	if *version {
+		fmt.Println(AppVersion)
+		os.Exit(0)
+	}
+
 	if len(flag.Args()) < 1 {
 		flag.Usage()
 		log.Fatalln("url should be specifically")