new folder strucure and file path

handlers/scheduler.go

@@ -4,20 +4,36 @@ import (
 	"encoding/json"
 	"net/http"
 	"os"
+	"slideshowApp/utils"
 )
 
-type Schedule map[string]interface{}
+var scheduleFile = "./data/schedule.json"
+
+type Schedule map[string]any
 
 func SaveSchedule(w http.ResponseWriter, r *http.Request) {
 	var s Schedule
-	json.NewDecoder(r.Body).Decode(&s)
+	if err := json.NewDecoder(r.Body).Decode(&s); err != nil {
-	data, _ := json.Marshal(s)
+		utils.SendJSONError(w, "Invalid input", http.StatusBadRequest)
-	os.WriteFile("schedule.json", data, 0644)
+		return
+	}
+
+	data, err := json.MarshalIndent(s, "", "  ")
+	if err != nil {
+		utils.SendJSONError(w, "Encoding failed", http.StatusInternalServerError)
+		return
+	}
+
+	err = os.WriteFile(scheduleFile, data, 0644)
+	if err != nil {
+		utils.SendJSONError(w, "write file failed", http.StatusInternalServerError)
+		return
+	}
 	w.WriteHeader(http.StatusOK)
 }
 
 func GetSchedule(w http.ResponseWriter, r *http.Request) {
-	data, err := os.ReadFile("schedule.json")
+	data, err := os.ReadFile(scheduleFile)
 	if err != nil {
 		json.NewEncoder(w).Encode(Schedule{})
 		return