using UnityEngine;
using UnityEditor;

namespace WSMGameStudio.RailroadSystem
{
    public class WagonsBuilderWindow : EditorWindow
    {
        private string _wagonName;
        private string _txtMessage;
        private Color _txtColor = Color.black;
        private GUIStyle _errorMessageStyle;
        private GUIStyle _menuBoxStyle;

        private CustomWagonProfile _customProfile;
        private GameObject _modelPrefab;

        /// <summary>
        /// Open new window or select current opened one
        /// </summary>
        [MenuItem("WSM Game Studio/Train Controller/Utilities/Custom Wagons Creator")]
        [MenuItem("Window/WSM Game Studio/Custom Wagons Creator")]
        public static void ShowWindow()
        {
            WagonsBuilderWindow currentWindow = GetWindow<WagonsBuilderWindow>("Custom Wagons Creator");
            currentWindow.minSize = new Vector2(330, 120);
        }

        /// <summary>
        /// Render Window
        /// </summary>
        private void OnGUI()
        {
            GUILayout.Label("Custom Wagons Creator", EditorStyles.boldLabel);

            //Set up the box style if null
            if (_menuBoxStyle == null)
            {
                _menuBoxStyle = new GUIStyle(GUI.skin.box);
                _menuBoxStyle.normal.textColor = GUI.skin.label.normal.textColor;
                _menuBoxStyle.fontStyle = FontStyle.Bold;
                _menuBoxStyle.alignment = TextAnchor.UpperLeft;
            }

            GUILayout.BeginVertical(_menuBoxStyle);

            GUILayout.BeginHorizontal();

            GUILayout.BeginVertical(GUILayout.Width(100));
            EditorGUILayout.LabelField("Profile", GUILayout.Width(100));
            EditorGUILayout.LabelField("Model", GUILayout.Width(100));
            EditorGUILayout.LabelField("Name", GUILayout.Width(100));
            GUILayout.EndVertical();

            GUILayout.BeginVertical();

            _customProfile = EditorGUILayout.ObjectField(_customProfile, typeof(CustomWagonProfile), false) as CustomWagonProfile;
            _modelPrefab = EditorGUILayout.ObjectField(_modelPrefab, typeof(GameObject), false) as GameObject;
            _wagonName = EditorGUILayout.TextField(string.Empty, _wagonName);
            GUILayout.EndVertical();

            GUILayout.EndHorizontal();

            if (GUILayout.Button("Create"))
            {
                CreateWagon();
            }

            _errorMessageStyle = new GUIStyle();
            _errorMessageStyle.normal.textColor = _txtColor;
            _errorMessageStyle.fontStyle = FontStyle.Bold;
            GUILayout.Label(_txtMessage, _errorMessageStyle);

            GUILayout.EndVertical(); //Stylized Box
        }

        /// <summary>
        /// 
        /// </summary>
        private void CreateWagon()
        {
            _txtMessage = string.Empty;

            bool valid = CustomWagonCreator.Validate(_customProfile, _modelPrefab, _wagonName, out _txtMessage);
            if (!valid)
            {
                ShowMessage(_txtMessage, Splines.MessageType.Error);
                return;
            }

            bool success = CustomWagonCreator.Create(_customProfile, _modelPrefab, _wagonName, out _txtMessage);
            if (success)
                ShowMessage(_txtMessage, Splines.MessageType.Success);
        }

        /// <summary>
        /// Show message on Window
        /// </summary>
        /// <param name="message"></param>
        /// <param name="type"></param>
        private void ShowMessage(string message, Splines.MessageType type)
        {
            _txtMessage = message;

            switch (type)
            {
                case Splines.MessageType.Success:
                    _txtColor = new Color(0, 0.5f, 0); //Dark green;
                    break;
                case Splines.MessageType.Warning:
                    _txtColor = Color.yellow;
                    break;
                case Splines.MessageType.Error:
                    _txtColor = Color.red;
                    break;
            }
        }
    } 
}