using UnityEditor;
using UnityEngine;

namespace Amanotes
{
    internal class ProjectCP : EditorWindow
    {
        private static ProjectCP _window;
        private int selectedTab;

        private ProjectTab projectTab;
        private DevModeTab packagesTab;
        private FlagTab flagTab;
        private LogTab logTab;
        private PresetTab presetTab;
        private BuildTab buildTab;
        private RuntimeOverlay runtimeOverlay;

        private static readonly string[] tabNames = { "Project", "Packages", "Flag", "Log", "Preset" };

        [MenuItem("Window/AmaDev")]
        private static void ShowWindow()
        {
            if (_window != null) return;
            _window = CreateInstance<ProjectCP>();
            _window.titleContent = new GUIContent("AmaDev",
                AssetPreview.GetMiniTypeThumbnail(typeof(SceneAsset)),
                "AmaDev Project Control Panel");
            _window.wantsMouseMove = true;
            _window.Show();
        }

        private void EnsureTabs()
        {
            if (packagesTab != null) return;
            projectTab = new ProjectTab();
            packagesTab = new DevModeTab();
            flagTab = new FlagTab();
            logTab = new LogTab();
            presetTab = new PresetTab();
            buildTab = new BuildTab();
            runtimeOverlay = new RuntimeOverlay();
            LocalPackagesTab.onPackageChanged = () => packagesTab.Refresh();
        }

        public void OnGUI()
        {
            EnsureTabs();
            projectTab.DrawHeader();

            if (EditorApplication.isPlayingOrWillChangePlaymode)
            {
                runtimeOverlay.OnGUI();
                return;
            }

            selectedTab = GUILayout.Toolbar(selectedTab, tabNames, GUILayout.Height(24));
            EditorGUILayout.Space();

            switch (selectedTab)
            {
                case 0: DrawClippedTab(projectTab.OnGUI); break;
                case 1: DrawClippedTab(packagesTab.OnGUI); break;
                case 2: DrawClippedTab(flagTab.OnGUI); break;
                case 3: DrawClippedTab(logTab.OnGUI); break;
                case 4: DrawClippedTab(presetTab.OnGUI); break;
            }

            if (Event.current.type == EventType.MouseMove) Repaint();
        }

        private void DrawClippedTab(System.Action drawContent)
        {
            float usedY = GUILayoutUtility.GetLastRect().yMax;
            float winH = position.height;
            float listH = winH - usedY;
            float winW = position.width;

            var listRect = new Rect(0, usedY, winW, listH);
            GUI.BeginClip(listRect);
            GUILayout.BeginArea(new Rect(0, 0, winW, listH));
            drawContent();
            GUILayout.EndArea();
            GUI.EndClip();
            GUILayoutUtility.GetRect(winW, listH);
        }
    }
}