// UTF-8 with BOM — required for Chinese character paths
using System.Collections.Generic;
using System.Linq;
using BrewMonster.Scripts.ECModel;
using UnityEditor;
using UnityEngine;

public class CombinedActionSOGfxRemover : EditorWindow
{
    CombinedActionSO _combinedActionSo;
    CombinedActionGfxPhase _phaseFilter = CombinedActionGfxPhase.All;
    string _actionFilter = string.Empty;
    string _basenameFilter = string.Empty;
    Vector2 _scrollPos;
    readonly List<CombinedActionGfxEntry> _entries = new();
    GUIStyle _headerStyle;

    GUIStyle HeaderStyle => _headerStyle ??= new GUIStyle(EditorStyles.boldLabel) { fontSize = 14 };

    [MenuItem("Tools/Brew Monster/Combined Action GFX Event Remover")]
    public static void ShowWindow()
    {
        var win = GetWindow<CombinedActionSOGfxRemover>(false, "GFX Event Remover", true);
        win.minSize = new Vector2(760, 420);
    }

    void OnEnable()
    {
        RefreshEntries();
    }

    void OnGUI()
    {
        EditorGUILayout.Space(6);
        EditorGUILayout.LabelField("Combined Action GFX Event Remover", HeaderStyle);
        EditorGUILayout.LabelField(
            "Browse and remove FX/GFX events from CombinedActionSO assets.",
            EditorStyles.miniLabel);
        EditorGUILayout.Space(4);

        EditorGUI.BeginChangeCheck();
        _combinedActionSo = (CombinedActionSO)EditorGUILayout.ObjectField(
            "Combined Action SO",
            _combinedActionSo,
            typeof(CombinedActionSO),
            false);
        if (EditorGUI.EndChangeCheck())
            RefreshEntries();

        using (new EditorGUILayout.HorizontalScope())
        {
            _phaseFilter = (CombinedActionGfxPhase)EditorGUILayout.EnumPopup("Phase", _phaseFilter);
            if (GUILayout.Button("Refresh", GUILayout.Width(80)))
                RefreshEntries();
        }

        _actionFilter = EditorGUILayout.TextField("Filter action name", _actionFilter);
        _basenameFilter = EditorGUILayout.TextField("Filter gfx basename", _basenameFilter);

        DrawBulkRemoveRow();
        DrawSeparator();
        DrawEntryTable();
    }

    void DrawBulkRemoveRow()
    {
        using (new EditorGUI.DisabledScope(_combinedActionSo == null || string.IsNullOrWhiteSpace(_basenameFilter)))
        {
            EditorGUILayout.BeginHorizontal();
            EditorGUILayout.LabelField("Bulk remove", GUILayout.Width(100));
            if (GUILayout.Button("Remove basename from Attack actions", GUILayout.Height(22)))
            {
                int removed = CombinedActionGfxQuery.RemoveMatchingBasenameFromPhase(
                    _combinedActionSo,
                    _basenameFilter.Trim(),
                    CombinedActionGfxPhase.Attack);
                Debug.Log($"[GFX Event Remover] Removed {removed} Attack GFX row(s) matching basename '{_basenameFilter.Trim()}'.");
                RefreshEntries();
            }

            if (GUILayout.Button("Remove basename from Cast actions", GUILayout.Height(22)))
            {
                int removed = CombinedActionGfxQuery.RemoveMatchingBasenameFromPhase(
                    _combinedActionSo,
                    _basenameFilter.Trim(),
                    CombinedActionGfxPhase.Cast);
                Debug.Log($"[GFX Event Remover] Removed {removed} Cast GFX row(s) matching basename '{_basenameFilter.Trim()}'.");
                RefreshEntries();
            }
            EditorGUILayout.EndHorizontal();
        }
    }

    void DrawEntryTable()
    {
        IEnumerable<CombinedActionGfxEntry> visible = _entries.Where(entry =>
            CombinedActionGfxQuery.MatchesFilters(entry, _phaseFilter, _actionFilter, _basenameFilter));

        int visibleCount = visible.Count();
        EditorGUILayout.LabelField($"GFX rows: {visibleCount} / {_entries.Count}", EditorStyles.boldLabel);

        if (_combinedActionSo == null)
        {
            EditorGUILayout.HelpBox("Assign a CombinedActionSO asset to begin.", MessageType.Info);
            return;
        }

        if (visibleCount == 0)
        {
            EditorGUILayout.HelpBox("No GFX rows match the current filters.", MessageType.Warning);
            return;
        }

        _scrollPos = EditorGUILayout.BeginScrollView(_scrollPos);
        foreach (CombinedActionGfxEntry entry in visible)
            DrawEntryRow(entry);
        EditorGUILayout.EndScrollView();
    }

    void DrawEntryRow(CombinedActionGfxEntry entry)
    {
        using (new EditorGUILayout.VerticalScope(EditorStyles.helpBox))
        {
            using (new EditorGUILayout.HorizontalScope())
            {
                EditorGUILayout.LabelField(CombinedActionGfxQuery.GetPhaseLabel(entry.Phase), GUILayout.Width(56));
                EditorGUILayout.LabelField(entry.GfxBasename, EditorStyles.boldLabel, GUILayout.Width(180));
                EditorGUILayout.SelectableLabel(entry.Path, EditorStyles.miniLabel, GUILayout.Height(16));
                if (GUILayout.Button("Remove", GUILayout.Width(72)))
                {
                    if (EditorUtility.DisplayDialog(
                            "Remove GFX event",
                            $"Remove '{entry.GfxBasename}' from action '{entry.ActionName}'?",
                            "Remove",
                            "Cancel") &&
                        CombinedActionGfxQuery.RemoveEntry(_combinedActionSo, entry))
                    {
                        Debug.Log(
                            $"[GFX Event Remover] Removed '{entry.GfxBasename}' from action '{entry.ActionName}'.");
                        RefreshEntries();
                    }
                }
            }

            EditorGUILayout.LabelField(entry.ActionName, EditorStyles.miniLabel);
        }
    }

    void RefreshEntries()
    {
        _entries.Clear();
        if (_combinedActionSo == null)
            return;

        _entries.AddRange(CombinedActionGfxQuery.Scan(_combinedActionSo));
        Repaint();
    }

    static void DrawSeparator()
    {
        var rect = EditorGUILayout.GetControlRect(false, 1);
        EditorGUI.DrawRect(rect, new Color(0.5f, 0.5f, 0.5f, 0.35f));
        EditorGUILayout.Space(4);
    }
}