feat(upload): add first prototype of File storage, svg database and svg processing. Also added --help command

internal/routes/upload.go

@@ -0,0 +1,49 @@
+package routes
+
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"log"
+	"net/http"
+
+	"tomatentum.net/svg-templater/pkg/svg/actions"
+)
+
+func CreateSVG(writer http.ResponseWriter, r http.Request) {
+
+	contentType := r.Header.Get("Content-Type")
+	if contentType != "image/svg+xml" {
+		http.Error(writer, "Incorrect Content-Type. Needs image/svg+xml.", http.StatusUnsupportedMediaType)
+		return
+	}
+
+	readsvg, err := io.ReadAll(r.Body)
+	if err != nil {
+		http.Error(writer, err.Error(), http.StatusInternalServerError)
+		log.Println("Error while reading Body\n", err)
+		return
+	}
+
+	if ok, err := validateSVG(readsvg); err != nil || !ok {
+		http.Error(writer, err.Error(), http.StatusUnsupportedMediaType)
+		log.Println("Wrong Media Type was uploaded\n", err)
+		return
+	}
+
+	data, err := actions.Create(readsvg)
+
+	if err != nil {
+		http.Error(writer, err.Error(), http.StatusInternalServerError)
+		log.Println("Failed creating SVG template\n", err)
+		return
+	}
+
+	writer.Header().Add("Content-Type", "application/json")
+	json.NewEncoder(writer).Encode(data)
+	log.Println("Created SVG Template " + data.Id)
+}
+
+func validateSVG(svgbuf []byte) (bool, error) {
+	return bytes.Contains(svgbuf[:512], []byte("<svg")), nil
+}