using UnityEditor;
using UnityEngine;

namespace Amanotes
{
    internal class EditorInputDialog : EditorWindow
    {
        private string message;
        private string inputText;
        private bool firstFrame = true;
        private static string result;

        internal static string Show(string title, string message, string defaultValue = "")
        {
            result = null;
            var w = CreateInstance<EditorInputDialog>();
            w.titleContent = new GUIContent(title);
            w.message = message;
            w.inputText = defaultValue ?? "";
            w.minSize = new Vector2(400, 130);
            w.maxSize = new Vector2(600, 130);
            w.ShowModal();
            return result;
        }

        void OnGUI()
        {
            GUILayout.Space(8);
            EditorGUILayout.LabelField(message, EditorStyles.wordWrappedLabel);
            GUILayout.Space(4);

            GUI.SetNextControlName("InputField");
            inputText = EditorGUILayout.TextField(inputText);

            if (firstFrame)
            {
                EditorGUI.FocusTextInControl("InputField");
                firstFrame = false;
            }

            if (Event.current.type == EventType.KeyDown && Event.current.keyCode == KeyCode.Return && !string.IsNullOrEmpty(inputText))
            {
                result = inputText;
                Close();
                return;
            }

            GUILayout.Space(8);
            EditorGUILayout.BeginHorizontal();
            GUILayout.FlexibleSpace();
            if (GUILayout.Button("Cancel", GUILayout.Width(80))) Close();
            if (GUILayout.Button("OK", GUILayout.Width(80)))
            {
                if (!string.IsNullOrEmpty(inputText)) result = inputText;
                Close();
            }
            EditorGUILayout.EndHorizontal();
        }
    }
}