using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using UnityEditor;
using UnityEngine;
using UnityEngine.UIElements;

namespace AlicizaX.PackageManager.Editor
{
    [EditorWindowTitle(title = "Package Manager", icon = "Package Manager")]
    internal class FrameworkPackageManagerWindow : EditorWindow
    {
        private const string VisualAssetPath = "Packages/com.alicizax.unity.packagemanager/Editor/PackageManager/Res/AlicizaXPackageManagerWindow.uxml";
        public List<RepositoryPackageData> RepositoryPackageDatas = new();
        public static FrameworkPackageManagerWindow Instance;

        public FrameworkPackageManagerWindow()
        {
            Instance = this;
        }

        public void RefreshPackage(string packageName)
        {
            var package = RepositoryPackageDatas.Find(t => t.name.Equals(packageName));
            if (package != null)
            {
                packageListView.itemsSource = RepositoryPackageDatas;
                packageListView.Rebuild();
            }
        }

        private void RefreshPackageData(Action callBack)
        {
            RepositoryDataFetcher.FetchRepositoryData((datas) =>
            {
                PackageManagerCheckTool.ValidatePackageStates(datas);
                RepositoryPackageDatas = datas;
                callBack?.Invoke();
            });
        }

        [MenuItem("Tools/AlicizaX/Package Manager")]
        internal static void Open()
        {
            GetWindow<FrameworkPackageManagerWindow>().Show();
        }

        private void CreateGUI()
        {
            VisualTreeAsset visualTree = AssetDatabase.LoadAssetAtPath<VisualTreeAsset>(VisualAssetPath);
            visualTree.CloneTree(rootVisualElement);
            CreateLeftList();
        }

        private void Refresh()
        {
            RefreshPackageData(() =>
            {
                packageListView.itemsSource = RepositoryPackageDatas;
                packageListView.Rebuild();
            });
        }

        private PackageListView packageListView;
        private PackageInfoView packageInfoView;

        private void CreateLeftList()
        {
            var leftContainer = rootVisualElement.Q<VisualElement>("LeftContainer");
            leftContainer.style.backgroundColor = new Color(0.1686275f, 0.1606275f, 0.1686275f);

            packageListView = new PackageListView();
            leftContainer.Add(packageListView);
            packageListView.OnSelectionChangedEvent += PackageListViewOnOnSelectionChangedEvent;


            leftContainer.Add(new PackageBottomStateBar());

            var rightContainer = rootVisualElement.Q<VisualElement>("RightContainer");

            packageInfoView = new PackageInfoView();
            rightContainer.Add(packageInfoView);


            packageListView.itemsSource = RepositoryPackageDatas;

            Refresh();
        }

        private void PackageListViewOnOnSelectionChangedEvent(IEnumerable<RepositoryPackageData> obj)
        {
            packageInfoView.RefreshView(obj.First());
        }
    }
}