using UnityEditor;
using UnityEngine;
using System;

namespace TapjoyEditor
{
    public class EDMSelectionEditorWindow : EditorWindow
    {
        private int selectedVersionIndex = 0;
        private Action<string> onVersionSelected;
        private bool callbackInvoked = false;
        private string[] versions;

        public static void ShowWindow(Action<string> onVersionSelectedCallback, string[] versions)
        {
            EDMSelectionEditorWindow window = GetWindow<EDMSelectionEditorWindow>("Select Version");
            window.onVersionSelected = onVersionSelectedCallback;
            window.versions = versions;
            window.ShowUtility();
        }

        private void OnGUI()
        {
            GUILayout.Label("Select the Unity External Dependency Manager version to install:",
                EditorStyles.boldLabel);
            selectedVersionIndex = EditorGUILayout.Popup("Version:", selectedVersionIndex, versions);

            GUILayout.Space(20);

            GUILayout.BeginHorizontal();
            if (GUILayout.Button("Ok"))
            {
                string selectedVersion = versions[selectedVersionIndex];
                InvokeCallback(selectedVersion);
                Close();
            }

            if (GUILayout.Button("Cancel"))
            {
                InvokeCallback(null);
                Close();
            }

            GUILayout.EndHorizontal();
        }
        private void OnDestroy()
        {
            if (!callbackInvoked)
            {
                InvokeCallback(null);
            }
        }
        private void InvokeCallback(string version = null)
        {
            
            if (!callbackInvoked)
            {
                callbackInvoked = true;
                if (version == null)
                {
                    version = string.Empty;
                }
                onVersionSelected?.Invoke(version);
            }
        }
    }
}