Webseite ausgebaut und QR-Codes werden für Ordner erzeugt

README.md

@@ -1,2 +1,9 @@
-# golangtest
-
+# Go test App
+
+Zum Kompilieren folgende Go-Abhängigkeiten installieren:
+ - `go get github.com/gorilla/mux`
+ - `go get github.com/boombuler/barcode`
+ - `go get github.com/boombuler/barcode/qr`
+
+Kompilieren mit: `go build main.go`
+

main.go

@@ -3,22 +3,28 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	"image/png"
 	"io/ioutil"
 	"log"
 	"net/http"
+	"os"
 	"path"
 
+	"github.com/boombuler/barcode"
+	"github.com/boombuler/barcode/qr"
 	"github.com/gorilla/mux"
 )
 
 var StartUpPath string
 
+// our main function
 func main() {
-	StartUpPath = "Fotos" //dir
+	StartUpPath = "C:/Fotos" //dir
 
 	router := mux.NewRouter()
 	router.HandleFunc("/folder/{foldername:.*}", GetFolderContent).Methods("GET")
-	router.PathPrefix("/img/").Handler(http.StripPrefix("/img/", http.FileServer(http.Dir(StartUpPath)))).Methods("GET")
+	router.HandleFunc("/qr/{qrlink:.*}", GetQRCode).Methods("GET")
+	router.PathPrefix("/img/").Handler(http.StripPrefix("/img/", http.FileServer(http.Dir("C:/Fotos")))).Methods("GET")
 	router.PathPrefix("/").Handler(http.FileServer(http.Dir("web"))).Methods("GET")
 	log.Fatal(http.ListenAndServe(":8000", router))
 }
@@ -40,3 +46,23 @@ func GetFolderContent(w http.ResponseWriter, r *http.Request) {
 
 	json.NewEncoder(w).Encode(dateien)
 }
+
+func GetQRCode(w http.ResponseWriter, r *http.Request) {
+
+	// Variablen auswerten
+	params := mux.Vars(r)
+	pQRLink := params["qrlink"]
+
+	// QR-Code erstellen
+	qrCode, _ := qr.Encode(pQRLink, qr.M, qr.Auto)
+
+	// Größe festlegen
+	qrCode, _ = barcode.Scale(qrCode, 200, 200)
+
+	// Datei erstellen
+	file, _ := os.Create("qrcode.png")
+	defer file.Close()
+
+	// Datei ausgeben
+	png.Encode(w, qrCode)
+}

web/index.html

@@ -16,11 +16,19 @@
 		
 		
 		$(document).ready(function() {
+		
+			ShowHomePage();
+		
+		});
+
+		function ShowHomePage() {
+
+			$("#Ordner").empty();
 
 			$.ajax({
 				method: "GET",
 				contentType:'application/json; charset=utf-8',
-				url: ServerAPI+'/folder/2019-11-15',
+				url: ServerAPI+'/folder/',
 				dataType: "json",
 				data: "",
 				success: function(content){
@@ -28,15 +36,43 @@
 					//http://127.0.0.1:8000/img/2019-11-15/IMG_4186.JPG
 					for ( var i = 0, l = content.length; i < l; i++ ) {
 						var ObjInhalt = content[i];	
-						$("#Ordner").append("<li>"+
-						"<img src=\""+ServerAPI+"/img/2019-11-15/"+ObjInhalt+"\" width=100 height=100>"+
-						"<a href=\"#\" onclick=\"ShowFolder('"+ObjInhalt+"')\">"+
-						ObjInhalt+"</a></li>");
+						$("#Ordner").append(""+
+						"<img src=\""+ServerAPI+"/qr/"+ServerAPI+"/dir/"+ObjInhalt+"\" width=150 height=150>"+
+						"<a href=\"#\" onclick=\"ShowFolderPics('"+ObjInhalt+"')\">"+
+						ObjInhalt+"</a><hr>");
 					}
 				}						
 			});
-		
-		});
+
+		}
+
+		function ShowFolderPics(folder) {
+
+			// Ordner div leeren
+			$("#Ordner").empty();
+			$("#Ordner").append('<a href="#" onclick=ShowHomePage()>Zurück</a><hr>');
+
+			$.ajax({
+				method: "GET",
+				contentType:'application/json; charset=utf-8',
+				url: ServerAPI+'/folder/'+folder,
+				dataType: "json",
+				data: "",
+				success: function(content){
+					
+					//http://127.0.0.1:8000/img/2019-11-15/IMG_4186.JPG
+					for ( var i = 0, l = content.length; i < l; i++ ) {
+						var ObjInhalt = content[i];	
+						$("#Ordner").append(""+
+						"<img src=\""+ServerAPI+"/img/"+folder+"/"+ObjInhalt+"\" width=100 height=100>"+
+						"<a href=\""+ServerAPI+"/img/"+folder+"/"+ObjInhalt+"\">"+
+						ObjInhalt+"</a><hr>");
+					}
+				}						
+			});
+
+		}
+
 	</script>
 	
   </body>