using UnityEngine;
using UnityEditor;

namespace Ubisoft.Hotel.Package.Editor
{
    [CustomPropertyDrawer(typeof(Version))]
    public class VersionPropertyDrawer : PropertyDrawer
    {
        public sealed override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
        {
            position = EditorGUI.PrefixLabel(position, label);

            _ = EditorGUI.BeginProperty(position, label, property);

            int indentLevelBackup = EditorGUI.indentLevel;

            // Draw all three version fields in an horizontal layout
            SerializedProperty p;
            float dotWidth = EditorStyles.label.CalcSize(new GUIContent(".")).x;
            float fieldWidth = (position.width - (2 * dotWidth)) / 3;    // 3 columns (major/minor/patch), 2 dots in between
            position.height = EditorStyles.numberField.lineHeight + EditorStyles.numberField.margin.vertical;

            // Major
            position.width = fieldWidth;
            p = property.FindPropertyRelative("m_major");
            p.intValue = EditorGUI.IntField(position, p.intValue);
            position.x += position.width;

            // Dot
            position.width = dotWidth;
            EditorGUI.LabelField(position, ".");
            position.x += position.width;

            // Minor
            position.width = fieldWidth;
            p = property.FindPropertyRelative("m_minor");
            p.intValue = EditorGUI.IntField(position, p.intValue);
            position.x += position.width;

            // Dot
            position.width = dotWidth;
            EditorGUI.LabelField(position, ".");
            position.x += position.width;

            // Patch
            position.width = fieldWidth;
            p = property.FindPropertyRelative("m_patch");
            p.intValue = EditorGUI.IntField(position, p.intValue);
            position.x += position.width;

            EditorGUI.EndProperty();
            EditorGUI.indentLevel = indentLevelBackup;
        }
    }
}