Better Ping implementation

controllers/ping.go

@@ -1,14 +1,23 @@
 package controllers
 
-import "github.com/astaxie/beego"
+import (
+	"github.com/astaxie/beego"
+	"encoding/xml"
+)
 
-type PingController struct {
-	beego.Controller
+type PingResponse struct {
+	XMLName xml.Name `xml:"http://subsonic.org/restapi subsonic-response"`
+	Status  string   `xml:"status,attr"`
+	Version string   `xml:"version,attr"`
 }
 
+type PingController struct{ beego.Controller }
+
 // @router /rest/ping.view [get]
 func (this *PingController) Get() {
-	this.Ctx.WriteString("<subsonic-response xmlns=\"http://subsonic.org/restapi\" status=\"ok\" version=\"1.0.0\"></subsonic-response>")
+	response := &PingResponse{Status:"ok", Version: beego.AppConfig.String("apiversion")}
+	xmlBody, _ := xml.Marshal(response)
+	this.Ctx.Output.Body([]byte(xml.Header + string(xmlBody)))
 }