restructured and refactored codebase

For better code organisation the entire Codebase has been restructured and cleaned up. handlers have been separated into an own package, as well as the model.

handlers/submit_handler.go

@@ -0,0 +1,65 @@
+package handlers
+
+import (
+	"ddServer/model"
+	"embed"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	"sync"
+)
+
+var mu sync.Mutex
+
+// submitHandler verarbeitet die Formulardaten
+func SubmitHandler(content embed.FS, chars *[]model.Character, Monsters *[]model.Monster, filename string) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodPost {
+			http.Error(w, "Method not allowed", http.StatusMethodNotAllowed)
+			return
+		}
+
+		// Formulardaten parsen
+		err := r.ParseForm()
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// Monster-Objekt erstellen
+		filename := r.FormValue("filename")
+
+		// Charakter-Objekt erstellen oder aktualisieren
+		mu.Lock()
+		defer mu.Unlock()
+
+		char := model.GetOrCreateCharacter(filename, *chars)
+		char.Monster = append(char.Monster, *Monsters...)
+
+		// Charakterdaten in JSON umwandeln
+		charJSON, err := json.Marshal(char)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// JSON-Daten in die Datei schreiben
+		err = model.WriteToFile(filename, charJSON)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+		// Dateiinhalt lesen
+		fileContent, err := os.ReadFile(filename)
+		if err != nil {
+			http.Error(w, err.Error(), http.StatusInternalServerError)
+			return
+		}
+
+		// Datei zum Download anbieten
+		w.Header().Set("Content-Disposition", fmt.Sprintf("attachment; filename=%s", filename))
+		w.Header().Set("Content-Type", "application/json")
+		w.Write(fileContent)
+	}
+}