fix: refine logging

handler/workout.go

@@ -1,11 +1,11 @@
 package handler
 
 import (
+	"me-fit/log"
 	"me-fit/service"
 	"me-fit/template/workout"
 	"me-fit/utils"
 
-	"log/slog"
 	"net/http"
 	"strconv"
 	"time"
@@ -111,7 +111,7 @@ func (handler WorkoutHandlerImpl) handleDeleteWorkout() http.HandlerFunc {
 		rowId := r.PathValue("id")
 		if rowId == "" {
 			http.Error(w, "Missing required fields", http.StatusBadRequest)
-			slog.Warn("Missing required fields for workout delete")
+			log.Warn("Missing required fields for workout delete")
 			utils.TriggerToast(w, r, "error", "Missing ID field")
 			return
 		}
@@ -119,7 +119,7 @@ func (handler WorkoutHandlerImpl) handleDeleteWorkout() http.HandlerFunc {
 		rowIdInt, err := strconv.Atoi(rowId)
 		if err != nil {
 			http.Error(w, "Invalid ID", http.StatusBadRequest)
-			slog.Warn("Invalid ID for workout delete")
+			log.Warn("Invalid ID for workout delete")
 			utils.TriggerToast(w, r, "error", "Invalid ID")
 			return
 		}
@@ -127,7 +127,7 @@ func (handler WorkoutHandlerImpl) handleDeleteWorkout() http.HandlerFunc {
 		err = handler.service.DeleteWorkout(user, rowIdInt)
 		if err != nil {
 			http.Error(w, "Internal Server Error", http.StatusInternalServerError)
-			slog.Error("Could not delete workout: " + err.Error())
+			log.Error("Could not delete workout: %v", err.Error())
 			utils.TriggerToast(w, r, "error", "Internal Server Error")
 			return
 		}