import 'package:flutter/material.dart';
import 'package:shadcn_ui/shadcn_ui.dart';

import '../models/cloud_file.dart';
import 'file_icon.dart';

/// A file row with Finder-style inline rename support and a context menu.
class FileListTile extends StatefulWidget {
  final CloudFile file;
  final bool isSelected;
  final VoidCallback? onSelect;
  final VoidCallback? onOpen;
  final VoidCallback? onRename;
  final Future<void> Function(String newName)? onRenameConfirm;
  final VoidCallback? onCopy;
  final VoidCallback? onCut;
  final VoidCallback? onDownload;
  final VoidCallback? onShare;
  final VoidCallback? onCopyFastTransfer;
  final VoidCallback? onDelete;
  final bool isRecycleItem;

  const FileListTile({
    super.key,
    required this.file,
    this.isSelected = false,
    this.onSelect,
    this.onOpen,
    this.onRename,
    this.onRenameConfirm,
    this.onCopy,
    this.onCut,
    this.onDownload,
    this.onShare,
    this.onCopyFastTransfer,
    this.onDelete,
    this.isRecycleItem = false,
  });

  @override
  State<FileListTile> createState() => _FileListTileState();
}

class _FileListTileState extends State<FileListTile> {
  late final TextEditingController _renameController;
  late final FocusNode _renameFocusNode;
  var _isRenaming = false;
  var _isSubmittingRename = false;

  @override
  void initState() {
    super.initState();
    _renameController = TextEditingController(text: widget.file.name);
    _renameFocusNode = FocusNode(debugLabel: 'rename-${widget.file.id}');
  }

  @override
  void didUpdateWidget(covariant FileListTile oldWidget) {
    super.didUpdateWidget(oldWidget);
    if (oldWidget.file.id != widget.file.id ||
        (!_isRenaming && oldWidget.file.name != widget.file.name)) {
      _renameController.text = widget.file.name;
    }
  }

  @override
  void dispose() {
    _renameController.dispose();
    _renameFocusNode.dispose();
    super.dispose();
  }

  void _beginRename() {
    if (widget.onRenameConfirm == null) {
      widget.onRename?.call();
      return;
    }
    setState(() {
      _renameController.text = widget.file.name;
      _renameController.selection = TextSelection(
        baseOffset: 0,
        extentOffset: _renameController.text.length,
      );
      _isRenaming = true;
    });
    WidgetsBinding.instance.addPostFrameCallback((_) {
      if (mounted) _renameFocusNode.requestFocus();
    });
  }

  void _cancelRename() {
    setState(() {
      _renameController.text = widget.file.name;
      _isRenaming = false;
    });
  }

  Future<void> _confirmRename() async {
    final newName = _renameController.text.trim();
    if (_isSubmittingRename || newName.isEmpty) return;
    if (newName == widget.file.name) {
      _cancelRename();
      return;
    }
    final confirmed = await showShadDialog<bool>(
      context: context,
      builder: (dialogContext) => ShadDialog(
        title: const Text('确认重命名？'),
        description: Text('“${widget.file.name}” 将重命名为 “$newName”'),
        actions: [
          ShadButton.outline(
            onPressed: () => Navigator.of(dialogContext).pop(false),
            child: const Text('取消'),
          ),
          ShadButton(
            onPressed: () => Navigator.of(dialogContext).pop(true),
            child: const Text('确认重命名'),
          ),
        ],
      ),
    );
    if (confirmed != true || !mounted) return;
    setState(() => _isSubmittingRename = true);
    try {
      await widget.onRenameConfirm!(newName);
      if (mounted) setState(() => _isRenaming = false);
    } finally {
      if (mounted) setState(() => _isSubmittingRename = false);
    }
  }

  @override
  Widget build(BuildContext context) {
    final theme = ShadTheme.of(context);
    final isDark = theme.brightness == Brightness.dark;
    return ShadContextMenuRegion(
      items: [
        ShadContextMenuItem.inset(
          leading: const Icon(LucideIcons.folderOpen, size: 16),
          trailing: const Icon(LucideIcons.chevronRight),
          onPressed: widget.onOpen,
          child: const Text('打开'),
        ),
        ShadContextMenuItem.inset(
          leading: const Icon(LucideIcons.pencil, size: 16),
          onPressed: _beginRename,
          child: const Text('重命名'),
        ),
        ShadContextMenuItem.inset(
          leading: const Icon(LucideIcons.copy, size: 16),
          trailing: const Icon(LucideIcons.chevronRight),
          onPressed: widget.onCopy,
          child: const Text('复制'),
        ),
        ShadContextMenuItem.inset(
          leading: const Icon(LucideIcons.scissors, size: 16),
          trailing: const Icon(LucideIcons.chevronRight),
          onPressed: widget.onCut,
          child: const Text('剪切'),
        ),
        const Divider(height: 8),
        ShadContextMenuItem.inset(
          leading: const Icon(LucideIcons.download, size: 16),
          trailing: const Icon(LucideIcons.chevronRight),
          onPressed: widget.onDownload,
          child: const Text('下载'),
        ),
        ShadContextMenuItem.inset(
          leading: const Icon(LucideIcons.share2, size: 16),
          trailing: const Icon(LucideIcons.chevronRight),
          onPressed: widget.onShare,
          child: const Text('分享'),
        ),
        ShadContextMenuItem.inset(
          leading: const Icon(LucideIcons.zap, size: 16),
          onPressed: widget.onCopyFastTransfer,
          child: const Text('复制秒传'),
        ),
        const Divider(height: 8),
        ShadContextMenuItem.inset(
          leading: Icon(
            widget.isRecycleItem ? LucideIcons.rotateCcw : LucideIcons.trash2,
            size: 16,
            color: widget.isRecycleItem
                ? theme.colorScheme.primary
                : theme.colorScheme.destructive,
          ),
          trailing: Icon(
            LucideIcons.chevronRight,
            color: widget.isRecycleItem
                ? theme.colorScheme.primary
                : theme.colorScheme.destructive,
          ),
          onPressed: widget.onDelete,
          child: Text(
            widget.isRecycleItem ? '恢复' : '删除',
            style: TextStyle(
              color: widget.isRecycleItem
                  ? theme.colorScheme.primary
                  : theme.colorScheme.destructive,
            ),
          ),
        ),
      ],
      child: GestureDetector(
        onTap: _isRenaming ? null : widget.onSelect,
        onDoubleTap: _isRenaming ? null : widget.onOpen,
        child: Container(
          height: 48,
          padding: const EdgeInsets.symmetric(horizontal: 12),
          decoration: BoxDecoration(
            color: widget.isSelected
                ? (isDark
                      ? theme.colorScheme.primary.withAlpha(30)
                      : theme.colorScheme.primary.withAlpha(15))
                : (isDark
                      ? Colors.white.withAlpha(3)
                      : Colors.black.withAlpha(2)),
            border: Border(
              bottom: BorderSide(
                color: isDark
                    ? Colors.white.withAlpha(10)
                    : Colors.black.withAlpha(8),
                width: 0.5,
              ),
            ),
          ),
          child: Row(
            children: [
              if (widget.isSelected)
                Padding(
                  padding: const EdgeInsets.only(right: 8),
                  child: Icon(
                    LucideIcons.checkCircle,
                    size: 18,
                    color: theme.colorScheme.primary,
                  ),
                ),
              SizedBox(
                width: 32,
                height: 32,
                child: FileIcon(file: widget.file),
              ),
              const SizedBox(width: 12),
              Expanded(
                child: _isRenaming
                    ? Row(
                        children: [
                          Expanded(
                            child: ShadInput(
                              controller: _renameController,
                              focusNode: _renameFocusNode,
                              autofocus: true,
                              enabled: !_isSubmittingRename,
                              onSubmitted: (_) => _confirmRename(),
                            ),
                          ),
                          const SizedBox(width: 4),
                          ShadButton.ghost(
                            size: ShadButtonSize.sm,
                            onPressed: _isSubmittingRename
                                ? null
                                : _confirmRename,
                            child: const Icon(Icons.check_rounded, size: 17),
                          ),
                          ShadButton.ghost(
                            size: ShadButtonSize.sm,
                            onPressed: _isSubmittingRename
                                ? null
                                : _cancelRename,
                            child: const Icon(Icons.close_rounded, size: 17),
                          ),
                        ],
                      )
                    : Column(
                        mainAxisAlignment: MainAxisAlignment.center,
                        crossAxisAlignment: CrossAxisAlignment.start,
                        children: [
                          Text(
                            widget.file.name,
                            style: TextStyle(
                              fontSize: 13,
                              fontWeight: FontWeight.w500,
                              color: theme.colorScheme.foreground,
                            ),
                            overflow: TextOverflow.ellipsis,
                          ),
                          if (widget.file.isDirectory &&
                              widget.file.subFileCount != null)
                            Text(
                              '${widget.file.subFileCount} 个项目',
                              style: TextStyle(
                                fontSize: 11,
                                color: theme.colorScheme.mutedForeground,
                              ),
                            ),
                        ],
                      ),
              ),
              SizedBox(
                width: 80,
                child: Text(
                  widget.file.formattedSize,
                  textAlign: TextAlign.right,
                  style: TextStyle(
                    fontSize: 12,
                    color: theme.colorScheme.mutedForeground,
                  ),
                ),
              ),
              const SizedBox(width: 12),
              SizedBox(
                width: 120,
                child: Text(
                  widget.file.modifiedAt,
                  textAlign: TextAlign.right,
                  style: TextStyle(
                    fontSize: 11,
                    color: theme.colorScheme.mutedForeground,
                  ),
                  overflow: TextOverflow.ellipsis,
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}