#if UNITY_EDITOR
using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(ConditionalFieldAttribute))]
public class ConditionalFieldDrawer : PropertyDrawer
{
    public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
    {
        ConditionalFieldAttribute condHAtt = (ConditionalFieldAttribute)attribute;
        bool enabled = GetConditionalFieldValue(condHAtt.conditionalSourceField, property);

        EditorGUI.BeginDisabledGroup(!enabled);
        if (enabled)
        {
            EditorGUI.PropertyField(position, property, label, true);
        }

        EditorGUI.EndDisabledGroup();
    }

    public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
    {
        ConditionalFieldAttribute condHAtt = (ConditionalFieldAttribute)attribute;
        bool enabled = GetConditionalFieldValue(condHAtt.conditionalSourceField, property);

        return enabled ? EditorGUI.GetPropertyHeight(property, label) : -EditorGUIUtility.standardVerticalSpacing;
    }

    private bool GetConditionalFieldValue(string conditionalFieldName, SerializedProperty property)
    {
        string propertyPath = property.propertyPath;
        string conditionPath = propertyPath.Replace(property.name, conditionalFieldName);
        SerializedProperty sourcePropertyValue = property.serializedObject.FindProperty(conditionPath);

        if (sourcePropertyValue != null)
        {
            return sourcePropertyValue.boolValue;
        }
        else
        {
            Debug.LogWarning("Cannot find property with name: " + conditionalFieldName);
            return true;
        }
    }
}
#endif