feat(SRC): :rocket: When there aren't hotorical data return all 0

app.py

@@ -74,8 +74,18 @@ def calcular_macros(esfuerzo_dieta, objetivo, cumplimiento_entrenamiento,
     print(f"Macros:\n{macros_differences_list}")
 
     # Calculate macros min, max and mean
-    (train_day_protein_std, train_day_carbs_std, train_day_fat_std, intratrain_protein_std, intratrain_carbs_std, 
-     rest_day_protein_std, rest_day_carbs_std, rest_day_fat_std) = get_min_max_mean_mode_macros_differences(macros_differences_list)
+    if len(macros_differences_list) > 0:
+        (train_day_protein_std, train_day_carbs_std, train_day_fat_std, intratrain_protein_std, intratrain_carbs_std, 
+        rest_day_protein_std, rest_day_carbs_std, rest_day_fat_std) = get_min_max_mean_mode_macros_differences(macros_differences_list)
+    else:
+        train_day_protein_std = [0, 0, 0, 0]
+        train_day_carbs_std = [0, 0, 0, 0]
+        train_day_fat_std = [0, 0, 0, 0]
+        intratrain_protein_std = [0, 0, 0, 0]
+        intratrain_carbs_std = [0, 0, 0, 0]
+        rest_day_protein_std = [0, 0, 0, 0]
+        rest_day_carbs_std = [0, 0, 0, 0]
+        rest_day_fat_std = [0, 0, 0, 0]
     
     # Print macros min, max and mean
     print(f"Macros min, max and mean:\n{train_day_protein_std}, {train_day_carbs_std}, {train_day_fat_std}, {intratrain_protein_std}, {intratrain_carbs_std}, {rest_day_protein_std}, {rest_day_carbs_std}, {rest_day_fat_std}")