using UnityEditor;
using UnityEngine;
using UnityEngine.UIElements;

namespace AlicizaX.PackageManager.Editor
{
    internal class PackageInfoListItem : VisualElement
    {
        private RepositoryPackageData _repositoryPackageData;

        private VisualElement m_MainItem;
        private Label m_NameLabel;
        private Label m_VersionLabel;
        private VisualElement m_StateContainer;
        private Image m_StateIcon;
        private VisualElement m_LeftContainer;
        private VisualElement m_RightContainer;

        public PackageInfoListItem()
        {
            style.backgroundColor = new Color(0.2196078f, 0.2196078f, 0.2196078f);
            BuildMainItem();
        }

        public void RefreshDataSource(RepositoryPackageData packageData)
        {
            _repositoryPackageData = packageData;
            m_NameLabel.text = packageData.displayName;

            if (packageData.PackageState == PackageState.Update)
            {
                m_StateIcon.image = EditorGUIUtility.IconContent("Update-Available").image;
            }
            else if (packageData.PackageState == PackageState.Install || packageData.PackageState == PackageState.InstallLocal)
            {
                m_StateIcon.image = EditorGUIUtility.IconContent("Installed").image;
            }
            else if (packageData.PackageState == PackageState.UnInstall)
            {
                m_StateIcon.image = EditorGUIUtility.IconContent("d_CreateAddNew").image;
            }

            m_VersionLabel.text = packageData.PackageState == PackageState.InstallLocal ? "[Local]" : packageData.version;
        }

        private void BuildMainItem()
        {
            style.flexShrink = 1;
            style.borderBottomWidth = 1;
            var borderColor = new Color(0.1372549f, 0.1372549f, 0.1372549f);
            style.borderBottomColor = borderColor;
            style.borderTopColor = borderColor;
            style.borderLeftColor = borderColor;
            style.borderRightColor = borderColor;

            m_MainItem = new VisualElement();
            m_MainItem.name = "MainItem";
            m_MainItem.style.height = Length.Percent(100);
            m_MainItem.style.flexDirection = FlexDirection.Row;
            m_MainItem.style.alignItems = Align.Center;

            Add(m_MainItem);

            m_LeftContainer = new VisualElement();
            m_LeftContainer.name = "leftContainer";

            m_MainItem.Add(m_LeftContainer);

            m_NameLabel = new Label();
            m_NameLabel.name = "packageName";
            m_LeftContainer.Add((VisualElement)m_NameLabel);
            m_LeftContainer.style.marginLeft = new Length(20, LengthUnit.Pixel);
            m_LeftContainer.style.justifyContent = Justify.Center;
            m_LeftContainer.style.flexGrow = 1; // 让 Label 占据剩余空间

            m_VersionLabel = new Label();
            m_VersionLabel.name = "versionLabel";
            m_MainItem.Add((VisualElement)m_VersionLabel);

            m_RightContainer = new VisualElement()
            {
                name = "rightContainer",
            };
            m_RightContainer.AddToClassList("right");
            m_MainItem.Add(m_RightContainer);


            m_StateContainer = new VisualElement()
            {
                name = "statesContainer"
            };
            m_MainItem.Add(m_StateContainer);

            m_StateContainer.style.justifyContent = Justify.Center;
            m_StateContainer.style.marginRight = new Length(10, LengthUnit.Pixel);

            m_StateIcon = new Image()
            {
                name = "stateIcon",
            };
            m_StateIcon.AddToClassList("status");
            m_StateContainer.Add(m_StateIcon);
        }

        public void SetSelected(bool isSelected)
        {
            if (m_MainItem != null)
            {
                // 设置选中时的背景颜色为 #4D4D4D（RGB: 77,77,77），未选中时透明
                m_MainItem.style.backgroundColor = isSelected
                    ? new Color(77f / 255f, 77f / 255f, 77f / 255f)
                    : Color.clear;
            }
        }
    }
}