/**
 * Tilemap Editor Panel - Main editing panel
 */

import React, { useEffect, useState, useRef, useCallback } from 'react';
import {
    Paintbrush,
    Eraser,
    PaintBucket,
    Grid3x3,
    Eye,
    EyeOff,
    ZoomIn,
    ZoomOut,
    RotateCcw,
    Map,
    Shield,
    Plus,
    Trash2,
    ChevronDown,
    ChevronRight,
    PanelRightClose,
    PanelRightOpen,
    X,
    Search,
    Folder,
    FolderOpen,
    File,
    Image as ImageIcon,
    Save,
    Scaling
} from 'lucide-react';
import { Core, Entity } from '@esengine/ecs-framework';
import { MessageHub, ProjectService, IFileSystemService, type IFileSystem } from '@esengine/editor-core';
import { TilemapComponent, type ITilesetData, type ResizeAnchor } from '@esengine/tilemap';
import { useTilemapEditorStore, type TilemapToolType, type LayerState } from '../../stores/TilemapEditorStore';
import { TilemapCanvas } from '../TilemapCanvas';
import { TilesetPreview } from '../TilesetPreview';
import { LayerPanel } from './LayerPanel';
import '../../styles/TilemapEditor.css';

// Asset Picker Dialog component
interface FileNode {
    name: string;
    path: string;
    isDirectory: boolean;
    children?: FileNode[];
}

interface AssetPickerDialogProps {
    isOpen: boolean;
    onClose: () => void;
    onSelect: (path: string) => void;
    title?: string;
    fileExtensions?: string[];
}

function AssetPickerDialog({
    isOpen,
    onClose,
    onSelect,
    title = 'Select Asset',
    fileExtensions = []
}: AssetPickerDialogProps) {
    const [searchTerm, setSearchTerm] = useState('');
    const [expandedFolders, setExpandedFolders] = useState<Set<string>>(new Set());
    const [selectedPath, setSelectedPath] = useState<string | null>(null);
    const [assets, setAssets] = useState<FileNode[]>([]);
    const [loading, setLoading] = useState(false);
    const [previewPath, setPreviewPath] = useState<string | null>(null);
    const [previewPosition, setPreviewPosition] = useState({ x: 0, y: 0 });
    const [previewSrc, setPreviewSrc] = useState<string | null>(null);

    const isImageFile = (name: string) => {
        const ext = name.split('.').pop()?.toLowerCase();
        return ['png', 'jpg', 'jpeg', 'gif', 'webp'].includes(ext || '');
    };

    const handleMouseEnter = (e: React.MouseEvent, node: FileNode) => {
        if (!node.isDirectory && isImageFile(node.name)) {
            const rect = e.currentTarget.getBoundingClientRect();
            setPreviewPosition({ x: rect.right + 10, y: rect.top - 50 });
            setPreviewPath(node.path);

            // Use FileSystem service to convert local path to asset URL
            const fileSystem = Core.services.tryResolve(IFileSystemService) as IFileSystem | null;
            if (fileSystem) {
                const assetUrl = fileSystem.convertToAssetUrl(node.path);
                setPreviewSrc(assetUrl);
            }
        }
    };

    const handleMouseLeave = () => {
        setPreviewPath(null);
        setPreviewSrc(null);
    };

    useEffect(() => {
        if (!isOpen) return;

        const loadAssets = async () => {
            setLoading(true);
            try {
                const projectService = Core.services.tryResolve(ProjectService);
                const fileSystem = Core.services.tryResolve(IFileSystemService) as IFileSystem | null;

                const currentProject = projectService?.getCurrentProject();
                if (projectService && currentProject && fileSystem) {
                    const projectPath = currentProject.path.replace(/\//g, '\\');
                    const assetsPath = `${projectPath}\\assets`;

                    const buildTree = async (dirPath: string): Promise<FileNode[]> => {
                        const entries = await fileSystem.listDirectory(dirPath);
                        const nodes: FileNode[] = [];

                        for (const entry of entries) {
                            const node: FileNode = {
                                name: entry.name,
                                path: entry.path,
                                isDirectory: entry.isDirectory
                            };

                            if (entry.isDirectory) {
                                try {
                                    node.children = await buildTree(entry.path);
                                } catch {
                                    node.children = [];
                                }
                            }

                            nodes.push(node);
                        }

                        return nodes.sort((a, b) => {
                            if (a.isDirectory && !b.isDirectory) return -1;
                            if (!a.isDirectory && b.isDirectory) return 1;
                            return a.name.localeCompare(b.name);
                        });
                    };

                    const tree = await buildTree(assetsPath);
                    setAssets(tree);
                }
            } catch (error) {
                console.error('Failed to load assets:', error);
            } finally {
                setLoading(false);
            }
        };

        loadAssets();
        setSelectedPath(null);
        setSearchTerm('');
    }, [isOpen]);

    const filterNode = useCallback((node: FileNode): FileNode | null => {
        if (!node.isDirectory && fileExtensions.length > 0) {
            const hasValidExtension = fileExtensions.some((ext) =>
                node.name.toLowerCase().endsWith(ext.toLowerCase())
            );
            if (!hasValidExtension) return null;
        }

        const matchesSearch = !searchTerm ||
            node.name.toLowerCase().includes(searchTerm.toLowerCase());

        if (node.isDirectory && node.children) {
            const filteredChildren = node.children
                .map(filterNode)
                .filter((n): n is FileNode => n !== null);

            if (filteredChildren.length > 0 || matchesSearch) {
                return { ...node, children: filteredChildren };
            }
            return null;
        }

        return matchesSearch ? node : null;
    }, [searchTerm, fileExtensions]);

    const filteredAssets = assets
        .map(filterNode)
        .filter((n): n is FileNode => n !== null);

    const toggleFolder = useCallback((path: string) => {
        setExpandedFolders((prev) => {
            const next = new Set(prev);
            if (next.has(path)) {
                next.delete(path);
            } else {
                next.add(path);
            }
            return next;
        });
    }, []);

    const handleSelect = useCallback((node: FileNode) => {
        if (node.isDirectory) {
            toggleFolder(node.path);
        } else {
            setSelectedPath(node.path);
        }
    }, [toggleFolder]);

    const toRelativePath = useCallback((absolutePath: string): string => {
        const projectService = Core.services.tryResolve(ProjectService);
        const currentProject = projectService?.getCurrentProject();
        if (currentProject) {
            const projectPath = currentProject.path.replace(/\\/g, '/');
            const normalizedAbsolute = absolutePath.replace(/\\/g, '/');
            if (normalizedAbsolute.startsWith(projectPath)) {
                return normalizedAbsolute.substring(projectPath.length + 1);
            }
        }
        return absolutePath;
    }, []);

    const handleConfirm = useCallback(() => {
        if (selectedPath) {
            onSelect(toRelativePath(selectedPath));
            onClose();
        }
    }, [selectedPath, onSelect, onClose, toRelativePath]);

    const handleDoubleClick = useCallback((node: FileNode) => {
        if (!node.isDirectory) {
            onSelect(toRelativePath(node.path));
            onClose();
        }
    }, [onSelect, onClose, toRelativePath]);

    const getFileIcon = (name: string) => {
        const ext = name.split('.').pop()?.toLowerCase();
        switch (ext) {
            case 'png':
            case 'jpg':
            case 'jpeg':
            case 'gif':
            case 'webp':
                return <ImageIcon size={14} />;
            default:
                return <File size={14} />;
        }
    };

    const renderNode = (node: FileNode, depth: number = 0) => {
        const isExpanded = expandedFolders.has(node.path);
        const isSelected = selectedPath === node.path;

        return (
            <div key={node.path}>
                <div
                    className={`asset-picker-item ${isSelected ? 'selected' : ''}`}
                    style={{ paddingLeft: `${depth * 16 + 8}px` }}
                    onClick={() => handleSelect(node)}
                    onDoubleClick={() => handleDoubleClick(node)}
                    onMouseEnter={(e) => handleMouseEnter(e, node)}
                    onMouseLeave={handleMouseLeave}
                >
                    <span className="asset-picker-item-icon">
                        {node.isDirectory ? (
                            isExpanded ? <FolderOpen size={14} /> : <Folder size={14} />
                        ) : (
                            getFileIcon(node.name)
                        )}
                    </span>
                    <span className="asset-picker-item-name">{node.name}</span>
                </div>
                {node.isDirectory && isExpanded && node.children && (
                    <div>
                        {node.children.map((child) => renderNode(child, depth + 1))}
                    </div>
                )}
            </div>
        );
    };

    if (!isOpen) return null;

    return (
        <div className="asset-picker-overlay" onClick={onClose}>
            <div className="asset-picker-dialog" onClick={(e) => e.stopPropagation()}>
                <div className="asset-picker-header">
                    <h3>{title}</h3>
                    <button className="asset-picker-close" onClick={onClose}>
                        <X size={16} />
                    </button>
                </div>

                <div className="asset-picker-search">
                    <Search size={14} />
                    <input
                        type="text"
                        placeholder="Search assets..."
                        value={searchTerm}
                        onChange={(e) => setSearchTerm(e.target.value)}
                        autoFocus
                    />
                </div>

                <div className="asset-picker-content">
                    {loading ? (
                        <div className="asset-picker-loading">Loading assets...</div>
                    ) : filteredAssets.length === 0 ? (
                        <div className="asset-picker-empty">No assets found</div>
                    ) : (
                        <div className="asset-picker-tree">
                            {filteredAssets.map((node) => renderNode(node))}
                        </div>
                    )}
                </div>

                <div className="asset-picker-footer">
                    <div className="asset-picker-selected">
                        {selectedPath ? (
                            <span title={selectedPath}>
                                {selectedPath.split(/[\\/]/).pop()}
                            </span>
                        ) : (
                            <span className="placeholder">No asset selected</span>
                        )}
                    </div>
                    <div className="asset-picker-actions">
                        <button className="btn-cancel" onClick={onClose}>
                            Cancel
                        </button>
                        <button
                            className="btn-confirm"
                            onClick={handleConfirm}
                            disabled={!selectedPath}
                        >
                            Select
                        </button>
                    </div>
                </div>

                {/* Image Preview Tooltip */}
                {previewPath && previewSrc && (
                    <div
                        className="asset-picker-preview"
                        style={{
                            left: previewPosition.x,
                            top: previewPosition.y
                        }}
                    >
                        <img
                            src={previewSrc}
                            alt="Preview"
                            style={{ maxWidth: '200px', maxHeight: '200px', objectFit: 'contain' }}
                            onError={(e) => {
                                console.error('Preview image load error:', previewPath);
                                (e.target as HTMLImageElement).style.display = 'none';
                            }}
                        />
                    </div>
                )}
            </div>
        </div>
    );
}

// Resize Map Dialog component
interface ResizeMapDialogProps {
    isOpen: boolean;
    onClose: () => void;
    onConfirm: (width: number, height: number, anchor: ResizeAnchor) => void;
    currentWidth: number;
    currentHeight: number;
}

function ResizeMapDialog({
    isOpen,
    onClose,
    onConfirm,
    currentWidth,
    currentHeight
}: ResizeMapDialogProps) {
    const [newWidth, setNewWidth] = useState(currentWidth);
    const [newHeight, setNewHeight] = useState(currentHeight);
    const [anchor, setAnchor] = useState<ResizeAnchor>('bottom-left');

    useEffect(() => {
        if (isOpen) {
            setNewWidth(currentWidth);
            setNewHeight(currentHeight);
        }
    }, [isOpen, currentWidth, currentHeight]);

    if (!isOpen) return null;

    const anchorPositions: ResizeAnchor[] = [
        'top-left', 'top-center', 'top-right',
        'middle-left', 'center', 'middle-right',
        'bottom-left', 'bottom-center', 'bottom-right'
    ];

    const handleConfirm = () => {
        if (newWidth > 0 && newHeight > 0) {
            onConfirm(newWidth, newHeight, anchor);
            onClose();
        }
    };

    return (
        <div className="asset-picker-overlay" onClick={onClose}>
            <div className="asset-picker-dialog resize-dialog" onClick={(e) => e.stopPropagation()} style={{ width: '320px' }}>
                <div className="asset-picker-header">
                    <h3>调整地图大小</h3>
                    <button className="asset-picker-close" onClick={onClose}>
                        <X size={16} />
                    </button>
                </div>

                <div className="resize-dialog-content" style={{ padding: '16px' }}>
                    {/* Size inputs */}
                    <div style={{ display: 'flex', gap: '16px', marginBottom: '16px' }}>
                        <div style={{ flex: 1 }}>
                            <label style={{ display: 'block', marginBottom: '4px', fontSize: '12px', color: '#888' }}>
                                宽度 (tiles)
                            </label>
                            <input
                                type="number"
                                value={newWidth}
                                onChange={(e) => setNewWidth(Math.max(1, parseInt(e.target.value) || 1))}
                                min={1}
                                style={{
                                    width: '100%',
                                    padding: '8px',
                                    backgroundColor: '#1e1e1e',
                                    border: '1px solid #444',
                                    borderRadius: '4px',
                                    color: '#e0e0e0'
                                }}
                            />
                        </div>
                        <div style={{ flex: 1 }}>
                            <label style={{ display: 'block', marginBottom: '4px', fontSize: '12px', color: '#888' }}>
                                高度 (tiles)
                            </label>
                            <input
                                type="number"
                                value={newHeight}
                                onChange={(e) => setNewHeight(Math.max(1, parseInt(e.target.value) || 1))}
                                min={1}
                                style={{
                                    width: '100%',
                                    padding: '8px',
                                    backgroundColor: '#1e1e1e',
                                    border: '1px solid #444',
                                    borderRadius: '4px',
                                    color: '#e0e0e0'
                                }}
                            />
                        </div>
                    </div>

                    {/* Anchor selector */}
                    <div style={{ marginBottom: '16px' }}>
                        <label style={{ display: 'block', marginBottom: '8px', fontSize: '12px', color: '#888' }}>
                            锚点位置 (原有内容保留在此处)
                        </label>
                        <div style={{
                            display: 'grid',
                            gridTemplateColumns: 'repeat(3, 1fr)',
                            gap: '4px',
                            width: '120px',
                            margin: '0 auto'
                        }}>
                            {anchorPositions.map((pos) => (
                                <button
                                    key={pos}
                                    onClick={() => setAnchor(pos)}
                                    style={{
                                        width: '36px',
                                        height: '36px',
                                        backgroundColor: anchor === pos ? '#0078d4' : '#2a2a2a',
                                        border: '1px solid #444',
                                        borderRadius: '4px',
                                        cursor: 'pointer',
                                        display: 'flex',
                                        alignItems: 'center',
                                        justifyContent: 'center'
                                    }}
                                    title={pos}
                                >
                                    <div style={{
                                        width: '8px',
                                        height: '8px',
                                        backgroundColor: anchor === pos ? '#fff' : '#666',
                                        borderRadius: '50%'
                                    }} />
                                </button>
                            ))}
                        </div>
                    </div>

                    {/* Preview */}
                    <div style={{
                        backgroundColor: '#1a1a1a',
                        border: '1px solid #333',
                        borderRadius: '4px',
                        padding: '12px',
                        marginBottom: '16px'
                    }}>
                        <div style={{ fontSize: '11px', color: '#888', marginBottom: '4px' }}>
                            当前: {currentWidth} × {currentHeight} → 新: {newWidth} × {newHeight}
                        </div>
                        <div style={{ fontSize: '11px', color: newWidth !== currentWidth || newHeight !== currentHeight ? '#4fc3f7' : '#666' }}>
                            {newWidth > currentWidth && `右侧增加 ${newWidth - currentWidth} 列`}
                            {newWidth < currentWidth && `右侧减少 ${currentWidth - newWidth} 列`}
                            {newWidth !== currentWidth && newHeight !== currentHeight && ' | '}
                            {newHeight > currentHeight && `顶部增加 ${newHeight - currentHeight} 行`}
                            {newHeight < currentHeight && `顶部减少 ${currentHeight - newHeight} 行`}
                            {newWidth === currentWidth && newHeight === currentHeight && '无变化'}
                        </div>
                    </div>
                </div>

                <div className="asset-picker-footer">
                    <div className="asset-picker-actions">
                        <button className="btn-cancel" onClick={onClose}>
                            取消
                        </button>
                        <button
                            className="btn-confirm"
                            onClick={handleConfirm}
                            disabled={newWidth === currentWidth && newHeight === currentHeight}
                        >
                            确定
                        </button>
                    </div>
                </div>
            </div>
        </div>
    );
}

// Helper to convert file path to URL using FileSystem service
function convertFileSrc(path: string): string {
    // Use FileSystem service to convert local path to asset URL
    const fileSystem = Core.services.tryResolve(IFileSystemService) as IFileSystem | null;
    if (fileSystem) {
        return fileSystem.convertToAssetUrl(path);
    }
    // Fallback for already-converted URLs
    if (path.startsWith('http://') || path.startsWith('https://')) {
        return path;
    }
    return path;
}

interface TilemapEditorPanelProps {
    projectPath?: string | null;
    messageHub?: MessageHub;
}

export const TilemapEditorPanel: React.FC<TilemapEditorPanelProps> = ({ messageHub: propMessageHub }) => {
    const [tilemap, setTilemap] = useState<TilemapComponent | null>(null);
    const [entity, setEntity] = useState<Entity | null>(null);
    const [tilesetImage, setTilesetImage] = useState<HTMLImageElement | null>(null);
    const [tilemapKey, setTilemapKey] = useState('');
    const [showTilesetPanel, setShowTilesetPanel] = useState(true);
    const [showSidebar, setShowSidebar] = useState(true);
    const [tilesetHeight, setTilesetHeight] = useState(200);
    const [sidebarWidth, setSidebarWidth] = useState(220);
    const [isResizing, setIsResizing] = useState(false);
    const [isResizingWidth, setIsResizingWidth] = useState(false);
    const [showAssetPicker, setShowAssetPicker] = useState(false);
    const [showResizeDialog, setShowResizeDialog] = useState(false);
    const sidebarRef = useRef<HTMLDivElement>(null);

    const messageHub = propMessageHub || Core.services.resolve(MessageHub);

    const {
        entityId,
        currentTool,
        zoom,
        showGrid,
        showCollision,
        editingCollision,
        tileWidth,
        tileHeight,
        tilesetImageUrl,
        tilesetColumns,
        tilesetRows,
        selectedTiles,
        setEntityId,
        setCurrentTool,
        setZoom,
        setShowGrid,
        setShowCollision,
        setEditingCollision,
        setPan,
        setTileset,
        setLayers,
        setCurrentLayer
    } = useTilemapEditorStore();

    // Listen for tilemap edit requests
    useEffect(() => {
        if (!messageHub) return;

        const unsubscribe = messageHub.subscribe('tilemap:edit', (data: { entityId: string }) => {
            setEntityId(data.entityId);
        });

        return unsubscribe;
    }, [messageHub, setEntityId]);

    // Helper to load tileset from component
    const loadTilesetFromComponent = (tilemapComp: TilemapComponent) => {
        // Get tileset source from first tileset
        const tilesetRef = tilemapComp.tilesets[0];
        if (!tilesetRef) {
            setTileset(null, 0, 0, tilemapComp.tileWidth, tilemapComp.tileHeight);
            return;
        }

        const tilesetPath = tilesetRef.source;

        // Convert relative path to absolute path
        const projectService = Core.services.tryResolve(ProjectService);
        const currentProject = projectService?.getCurrentProject();
        let absolutePath = tilesetPath;
        if (currentProject && !tilesetPath.startsWith('/') && !tilesetPath.match(/^[a-zA-Z]:/)) {
            // It's a relative path, convert to absolute
            const projectPath = currentProject.path.replace(/\\/g, '/');
            absolutePath = `${projectPath}/${tilesetPath}`.replace(/\\/g, '/');
        }

        const imageUrl = convertFileSrc(absolutePath);

        // Use existing tileset data if available, otherwise load from image
        if (tilesetRef.data) {
            const tilesetData = tilesetRef.data;
            console.log('[TilemapEditor] Using saved tileset data:', {
                columns: tilesetData.columns,
                rows: tilesetData.rows,
                tileWidth: tilesetData.tileWidth,
                tileHeight: tilesetData.tileHeight,
                imageWidth: tilesetData.imageWidth,
                imageHeight: tilesetData.imageHeight
            });
            setTileset(imageUrl, tilesetData.columns, tilesetData.rows, tilesetData.tileWidth, tilesetData.tileHeight);
        } else {
            // Fallback: calculate from image dimensions
            const img = new Image();
            img.onload = () => {
                const columns = Math.floor(img.width / tilemapComp.tileWidth);
                const rows = Math.floor(img.height / tilemapComp.tileHeight);

                // Create tileset data and set it
                const tilesetData: ITilesetData = {
                    name: 'tileset',
                    version: 1,
                    image: tilesetPath,
                    imageWidth: img.width,
                    imageHeight: img.height,
                    tileWidth: tilemapComp.tileWidth,
                    tileHeight: tilemapComp.tileHeight,
                    tileCount: columns * rows,
                    columns,
                    rows
                };
                tilemapComp.setTilesetData(0, tilesetData);
                setTileset(imageUrl, columns, rows, tilemapComp.tileWidth, tilemapComp.tileHeight);
            };
            img.onerror = () => {
                setTileset(null, 0, 0, tilemapComp.tileWidth, tilemapComp.tileHeight);
            };
            img.src = imageUrl;
        }
    };

    // Load tilemap component when entityId changes
    useEffect(() => {
        if (!entityId) {
            setTilemap(null);
            setEntity(null);
            return;
        }

        const scene = Core.scene;
        if (!scene) return;

        const foundEntity = scene.findEntityById(parseInt(entityId, 10));
        if (!foundEntity) return;

        const tilemapComp = foundEntity.getComponent(TilemapComponent);
        if (!tilemapComp) return;

        setEntity(foundEntity);
        setTilemap(tilemapComp);
        loadTilesetFromComponent(tilemapComp);

        // Sync layers to store
        const layerStates: LayerState[] = tilemapComp.layers.map((layer) => ({
            id: layer.id,
            name: layer.name,
            visible: layer.visible,
            locked: false,
            opacity: layer.opacity
        }));
        setLayers(layerStates);
        setCurrentLayer(0);
    }, [entityId, setTileset, setLayers, setCurrentLayer]);

    // Listen for scene modifications
    useEffect(() => {
        if (!messageHub || !tilemap) return;

        const unsubscribeModified = messageHub.subscribe('scene:modified', () => {
            loadTilesetFromComponent(tilemap);
            setTilemapKey(`${tilemap.width}-${tilemap.height}-${Date.now()}`);
        });

        const unsubscribeRestored = messageHub.subscribe('scene:restored', () => {
            if (!entityId) return;
            const scene = Core.scene;
            if (!scene) return;

            const foundEntity = scene.findEntityById(parseInt(entityId, 10));
            if (!foundEntity) return;

            const newTilemap = foundEntity.getComponent(TilemapComponent);
            if (!newTilemap) return;

            setTilemap(newTilemap);
            loadTilesetFromComponent(newTilemap);
        });

        return () => {
            unsubscribeModified();
            unsubscribeRestored();
        };
    }, [messageHub, tilemap, tilesetImageUrl, setTileset, entityId]);

    // Load tileset image
    useEffect(() => {
        if (!tilesetImageUrl) {
            setTilesetImage(null);
            return;
        }

        const img = new Image();
        img.onload = () => setTilesetImage(img);
        img.src = tilesetImageUrl;
    }, [tilesetImageUrl]);

    const handleTilemapChange = () => {
        messageHub?.publish('scene:modified', {});
    };

    const handleSaveTilemap = useCallback(async () => {
        if (!tilemap || !entity) return;

        try {
            // Export tilemap data
            const tilemapData = tilemap.exportToData();
            const jsonContent = JSON.stringify(tilemapData, null, 2);

            // Get the tilemap asset path from component
            let tilemapAssetPath = tilemap.tilemapAssetGuid;
            if (!tilemapAssetPath) {
                console.warn('Tilemap asset path not set, cannot save');
                return;
            }

            // Convert to absolute path if it's a relative path
            const projectService = Core.services.tryResolve(ProjectService);
            const currentProject = projectService?.getCurrentProject();
            if (!currentProject) {
                console.warn('No project loaded, cannot save tilemap');
                return;
            }

            // Normalize paths
            const normalizedAssetPath = tilemapAssetPath.replace(/\\/g, '/');
            const normalizedProjectPath = currentProject.path.replace(/\\/g, '/');

            // Check if path is already absolute (starts with drive letter or /)
            let absolutePath: string;
            if (normalizedAssetPath.match(/^[a-zA-Z]:/) || normalizedAssetPath.startsWith('/')) {
                // Already absolute path
                absolutePath = normalizedAssetPath;
            } else {
                // Relative path, combine with project path
                absolutePath = `${normalizedProjectPath}/${normalizedAssetPath}`;
            }

            // Save using FileSystem service
            const fileSystem = Core.services.tryResolve(IFileSystemService) as IFileSystem | null;
            if (fileSystem) {
                await fileSystem.writeFile(absolutePath, jsonContent);

                // Show success notification
                messageHub?.publish('notification:show', {
                    type: 'success',
                    message: 'Tilemap 保存成功',
                    duration: 2000
                });
            }
        } catch (error) {
            console.error('Failed to save tilemap:', error);

            // Show error notification
            messageHub?.publish('notification:show', {
                type: 'error',
                message: `保存失败: ${error instanceof Error ? error.message : String(error)}`,
                duration: 3000
            });
        }
    }, [tilemap, entity]);

    // Handle keyboard shortcuts
    useEffect(() => {
        const handleKeyDown = (e: KeyboardEvent) => {
            // Ctrl+S to save tilemap
            if ((e.ctrlKey || e.metaKey) && e.key === 's') {
                e.preventDefault();
                e.stopPropagation();
                handleSaveTilemap();
            }
        };

        window.addEventListener('keydown', handleKeyDown, { capture: true });
        return () => window.removeEventListener('keydown', handleKeyDown, { capture: true });
    }, [handleSaveTilemap]);

    const handleToolChange = (tool: TilemapToolType) => {
        setCurrentTool(tool);
    };

    const handleZoomIn = () => setZoom(Math.min(10, zoom * 1.2));
    const handleZoomOut = () => setZoom(Math.max(0.1, zoom / 1.2));
    const handleResetView = () => {
        setZoom(1);
        setPan(0, 0);
    };

    // Layer operations
    const handleAddLayer = () => {
        if (!tilemap) return;
        tilemap.addLayer(`Layer ${tilemap.layers.length + 1}`);
        const layerStates: LayerState[] = tilemap.layers.map((layer) => ({
            id: layer.id,
            name: layer.name,
            visible: layer.visible,
            locked: false,
            opacity: layer.opacity
        }));
        setLayers(layerStates);
        setCurrentLayer(tilemap.layers.length - 1);
        tilemap.renderDirty = true;
        handleTilemapChange();
    };

    const handleRemoveLayer = (index: number) => {
        if (!tilemap || tilemap.layers.length <= 1) return;
        tilemap.removeLayer(index);
        const layerStates: LayerState[] = tilemap.layers.map((layer) => ({
            id: layer.id,
            name: layer.name,
            visible: layer.visible,
            locked: false,
            opacity: layer.opacity
        }));
        setLayers(layerStates);
        const { currentLayer } = useTilemapEditorStore.getState();
        if (currentLayer >= tilemap.layers.length) {
            setCurrentLayer(tilemap.layers.length - 1);
        }
        tilemap.renderDirty = true;
        handleTilemapChange();
    };

    const handleMoveLayer = (fromIndex: number, toIndex: number) => {
        if (!tilemap) return;
        if (toIndex < 0 || toIndex >= tilemap.layers.length) return;
        tilemap.moveLayer(fromIndex, toIndex);
        const layerStates: LayerState[] = tilemap.layers.map((layer) => ({
            id: layer.id,
            name: layer.name,
            visible: layer.visible,
            locked: false,
            opacity: layer.opacity
        }));
        setLayers(layerStates);
        setCurrentLayer(toIndex);
        tilemap.renderDirty = true;
        handleTilemapChange();
    };

    // Tileset operations
    const handleAddTileset = () => {
        if (!tilemap) return;
        setShowAssetPicker(true);
    };

    const handleTilesetSelected = (path: string) => {
        if (!tilemap) return;
        tilemap.addTileset(path);
        loadTilesetFromComponent(tilemap);
        handleTilemapChange();
    };

    // Handle resize
    const handleResizeStart = (e: React.MouseEvent) => {
        e.preventDefault();
        setIsResizing(true);

        const startY = e.clientY;
        const startHeight = tilesetHeight;

        const handleMouseMove = (moveEvent: MouseEvent) => {
            const delta = moveEvent.clientY - startY;
            const newHeight = Math.max(100, Math.min(400, startHeight + delta));
            setTilesetHeight(newHeight);
        };

        const handleMouseUp = () => {
            setIsResizing(false);
            document.removeEventListener('mousemove', handleMouseMove);
            document.removeEventListener('mouseup', handleMouseUp);
        };

        document.addEventListener('mousemove', handleMouseMove);
        document.addEventListener('mouseup', handleMouseUp);
    };

    // Handle sidebar width resize
    const handleSidebarResizeStart = (e: React.MouseEvent) => {
        e.preventDefault();
        setIsResizingWidth(true);

        const startX = e.clientX;
        const startWidth = sidebarWidth;

        const handleMouseMove = (moveEvent: MouseEvent) => {
            const delta = startX - moveEvent.clientX; // Reverse delta because we're dragging from right to left
            const newWidth = Math.max(180, Math.min(400, startWidth + delta));
            setSidebarWidth(newWidth);
        };

        const handleMouseUp = () => {
            setIsResizingWidth(false);
            document.removeEventListener('mousemove', handleMouseMove);
            document.removeEventListener('mouseup', handleMouseUp);
        };

        document.addEventListener('mousemove', handleMouseMove);
        document.addEventListener('mouseup', handleMouseUp);
    };

    const handleRemoveTileset = (index: number) => {
        if (!tilemap) return;
        tilemap.removeTileset(index);
        if (tilemap.tilesets.length === 0) {
            setTileset(null, 0, 0, tilemap.tileWidth, tilemap.tileHeight);
        } else {
            loadTilesetFromComponent(tilemap);
        }
        handleTilemapChange();
    };

    // Handle resize map
    const handleResizeMap = useCallback((newWidth: number, newHeight: number, anchor: ResizeAnchor) => {
        if (!tilemap) return;
        tilemap.resize(newWidth, newHeight, anchor);
        setTilemapKey(`${newWidth}-${newHeight}-${Date.now()}`);
        handleTilemapChange();
    }, [tilemap, handleTilemapChange]);

    if (!tilemap) {
        return (
            <div className="tilemap-editor-panel">
                <div className="tilemap-editor-empty">
                    <Map size={48} />
                    <h3>No Tilemap Selected</h3>
                    <p>
                        Select an entity with a TilemapComponent
                        <br />
                        and click "Edit Tilemap" to start editing.
                    </p>
                </div>
            </div>
        );
    }

    return (
        <div className="tilemap-editor-panel">
            {/* Toolbar */}
            <div className="tilemap-editor-toolbar">
                <div className="tool-group">
                    <button
                        className={`tool-btn ${currentTool === 'brush' ? 'active' : ''}`}
                        onClick={() => handleToolChange('brush')}
                        title="Brush (B)"
                    >
                        <Paintbrush size={16} />
                    </button>
                    <button
                        className={`tool-btn ${currentTool === 'eraser' ? 'active' : ''}`}
                        onClick={() => handleToolChange('eraser')}
                        title="Eraser (E)"
                    >
                        <Eraser size={16} />
                    </button>
                    <button
                        className={`tool-btn ${currentTool === 'fill' ? 'active' : ''}`}
                        onClick={() => handleToolChange('fill')}
                        title="Fill (G)"
                    >
                        <PaintBucket size={16} />
                    </button>
                </div>

                <div className="separator" />

                <div className="tool-group">
                    <button
                        className="tool-btn"
                        onClick={handleSaveTilemap}
                        title="Save Tilemap (Ctrl+S)"
                    >
                        <Save size={16} />
                    </button>
                    <button
                        className="tool-btn"
                        onClick={() => setShowResizeDialog(true)}
                        title="Resize Map"
                    >
                        <Scaling size={16} />
                    </button>
                </div>

                <div className="separator" />

                <div className="tool-group">
                    <button
                        className={`tool-btn ${showGrid ? 'active' : ''}`}
                        onClick={() => setShowGrid(!showGrid)}
                        title="Toggle Grid"
                    >
                        <Grid3x3 size={16} />
                    </button>
                    <button
                        className={`tool-btn ${showCollision ? 'active' : ''}`}
                        onClick={() => setShowCollision(!showCollision)}
                        title="Show Collision"
                    >
                        {showCollision ? <Eye size={16} /> : <EyeOff size={16} />}
                    </button>
                    <button
                        className={`tool-btn ${editingCollision ? 'active' : ''}`}
                        onClick={() => setEditingCollision(!editingCollision)}
                        title="Edit Collision Layer"
                    >
                        <Shield size={16} />
                    </button>
                </div>

                <div className="zoom-control">
                    <button className="tool-btn" onClick={handleZoomOut} title="Zoom Out">
                        <ZoomOut size={16} />
                    </button>
                    <span>{Math.round(zoom * 100)}%</span>
                    <button className="tool-btn" onClick={handleZoomIn} title="Zoom In">
                        <ZoomIn size={16} />
                    </button>
                    <button className="tool-btn" onClick={handleResetView} title="Reset View">
                        <RotateCcw size={16} />
                    </button>
                </div>
            </div>

            {/* Main content area */}
            <div className="tilemap-editor-content">
                {/* Canvas */}
                <TilemapCanvas
                    key={tilemapKey}
                    tilemap={tilemap}
                    tilesetImage={tilesetImage}
                    onTilemapChange={handleTilemapChange}
                />

                {/* Sidebar toggle button */}
                <button
                    className="sidebar-toggle"
                    onClick={() => setShowSidebar(!showSidebar)}
                    title={showSidebar ? 'Hide Sidebar' : 'Show Sidebar'}
                >
                    {showSidebar ? <PanelRightClose size={16} /> : <PanelRightOpen size={16} />}
                </button>

                {/* Right sidebar with tileset and layers */}
                {showSidebar && (
                    <div className="tilemap-editor-sidebar" ref={sidebarRef} style={{ width: `${sidebarWidth}px` }}>
                        {/* Sidebar width resize handle */}
                        <div
                            className={`sidebar-resize-handle ${isResizingWidth ? 'active' : ''}`}
                            onMouseDown={handleSidebarResizeStart}
                        />
                        {/* Tileset Section */}
                        <div className="tileset-section">
                            <div
                                className="section-header"
                                onClick={() => setShowTilesetPanel(!showTilesetPanel)}
                            >
                                {showTilesetPanel ? <ChevronDown size={14} /> : <ChevronRight size={14} />}
                                <span>Tileset</span>
                                <div className="section-actions">
                                    <button
                                        className="section-btn"
                                        onClick={(e) => { e.stopPropagation(); handleAddTileset(); }}
                                        title="Add Tileset"
                                    >
                                        <Plus size={12} />
                                    </button>
                                    {tilemap.tilesets.length > 0 && (
                                        <button
                                            className="section-btn"
                                            onClick={(e) => { e.stopPropagation(); handleRemoveTileset(0); }}
                                            title="Remove Tileset"
                                        >
                                            <Trash2 size={12} />
                                        </button>
                                    )}
                                </div>
                            </div>
                            {showTilesetPanel && (
                                <div className="tileset-content" style={{ height: tilesetHeight }}>
                                    {tilesetImageUrl ? (
                                        <>
                                            <TilesetPreview
                                                imageUrl={tilesetImageUrl}
                                                tileWidth={tileWidth}
                                                tileHeight={tileHeight}
                                                columns={tilesetColumns}
                                                rows={tilesetRows}
                                            />
                                            {selectedTiles && (
                                                <div className="tileset-info">
                                                    Selected: {selectedTiles.width}×{selectedTiles.height}
                                                </div>
                                            )}
                                        </>
                                    ) : (
                                        <div className="tileset-empty-state">
                                            <p>No tileset</p>
                                            <button onClick={handleAddTileset}>
                                                <Plus size={14} />
                                                Add Tileset
                                            </button>
                                        </div>
                                    )}
                                </div>
                            )}
                            {/* Resize handle */}
                            {showTilesetPanel && (
                                <div
                                    className={`resize-handle ${isResizing ? 'active' : ''}`}
                                    onMouseDown={handleResizeStart}
                                />
                            )}
                        </div>

                        {/* Layer Panel */}
                        <LayerPanel
                            tilemap={tilemap}
                            onAddLayer={handleAddLayer}
                            onRemoveLayer={handleRemoveLayer}
                            onMoveLayer={handleMoveLayer}
                        />
                    </div>
                )}
            </div>

            {/* Info bar */}
            <div className="tilemap-info-bar">
                <span>
                    Size: {tilemap.width}×{tilemap.height}
                </span>
                <span>
                    Tile: {tileWidth}×{tileHeight}
                </span>
                {entity && <span>Entity: {entity.name}</span>}
                {editingCollision && <span style={{ color: '#ff6b6b' }}>Editing Collision</span>}
            </div>

            {/* Asset Picker Dialog */}
            <AssetPickerDialog
                isOpen={showAssetPicker}
                onClose={() => setShowAssetPicker(false)}
                onSelect={handleTilesetSelected}
                title="Select Tileset Image"
                fileExtensions={['.png', '.jpg', '.jpeg', '.webp']}
            />

            {/* Resize Map Dialog */}
            <ResizeMapDialog
                isOpen={showResizeDialog}
                onClose={() => setShowResizeDialog(false)}
                onConfirm={handleResizeMap}
                currentWidth={tilemap.width}
                currentHeight={tilemap.height}
            />
        </div>
    );
};