import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:forui/forui.dart';

import '../../../providers/danmaku_settings_provider.dart';
import '../../../shared/constants/breakpoints.dart';
import '../../../shared/widgets/adaptive_modal.dart';

void showBlockedKeywordsDialog(
  BuildContext context,
  WidgetRef ref,
  List<String> keywords,
) {
  showAdaptiveModal<void>(
    context: context,
    maxWidth: 420,
    compactMaxHeightFactor: 0.9,
    builder: (ctx) => _BlockedKeywordsDialog(
      keywords: keywords,
      onAdd: (kw) =>
          ref.read(danmakuSettingsProvider.notifier).addBlockedKeyword(kw),
      onRemove: (kw) =>
          ref.read(danmakuSettingsProvider.notifier).removeBlockedKeyword(kw),
    ),
  );
}

class _BlockedKeywordsDialog extends StatefulWidget {
  final List<String> keywords;
  final ValueChanged<String> onAdd;
  final ValueChanged<String> onRemove;

  const _BlockedKeywordsDialog({
    required this.keywords,
    required this.onAdd,
    required this.onRemove,
  });

  @override
  State<_BlockedKeywordsDialog> createState() => _BlockedKeywordsDialogState();
}

class _BlockedKeywordsDialogState extends State<_BlockedKeywordsDialog> {
  late final List<String> _keywords;
  final _controller = TextEditingController();

  @override
  void initState() {
    super.initState();
    _keywords = List.of(widget.keywords);
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  void _add() {
    final text = _controller.text.trim();
    if (text.isEmpty || _keywords.contains(text)) return;
    setState(() => _keywords.add(text));
    widget.onAdd(text);
    _controller.clear();
  }

  void _remove(String kw) {
    setState(() => _keywords.remove(kw));
    widget.onRemove(kw);
  }

  @override
  Widget build(BuildContext context) {
    final theme = Theme.of(context);
    final isCompact = Breakpoints.isCompact(MediaQuery.sizeOf(context).width);
    final chipsMaxHeight =
        MediaQuery.sizeOf(context).height * (isCompact ? 0.38 : 0.34);

    return SingleChildScrollView(
      padding: EdgeInsets.fromLTRB(24, isCompact ? 16 : 24, 24, 24),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          Text('屏蔽关键词', style: theme.textTheme.titleLarge),
          const SizedBox(height: 8),
          Text(
            '匹配到这些关键词的弹幕将被隐藏',
            style: theme.textTheme.bodySmall?.copyWith(
              color: theme.colorScheme.onSurfaceVariant,
            ),
          ),
          const SizedBox(height: 16),
          Row(
            children: [
              Expanded(
                child: TextField(
                  controller: _controller,
                  decoration: const InputDecoration(
                    hintText: '输入关键词后回车添加',
                    isDense: true,
                  ),
                  textInputAction: TextInputAction.done,
                  autocorrect: false,
                  enableSuggestions: false,
                  onSubmitted: (_) => _add(),
                ),
              ),
              const SizedBox(width: 8),
              IconButton.filledTonal(
                tooltip: '添加',
                onPressed: _add,
                icon: const Icon(Icons.add, size: 18),
              ),
            ],
          ),
          const SizedBox(height: 12),
          if (_keywords.isEmpty)
            Padding(
              padding: const EdgeInsets.symmetric(vertical: 24),
              child: Text(
                '暂无屏蔽关键词',
                textAlign: TextAlign.center,
                style: TextStyle(color: theme.colorScheme.onSurfaceVariant),
              ),
            )
          else
            ConstrainedBox(
              constraints: BoxConstraints(maxHeight: chipsMaxHeight),
              child: SingleChildScrollView(
                child: Wrap(
                  spacing: 8,
                  runSpacing: 8,
                  children: _keywords
                      .map(
                        (kw) => Chip(
                          label: Text(kw),
                          onDeleted: () => _remove(kw),
                          deleteIcon: const Icon(Icons.close, size: 14),
                        ),
                      )
                      .toList(),
                ),
              ),
            ),
          const SizedBox(height: 20),
          if (isCompact)
            FButton(
              onPress: () => Navigator.pop(context),
              child: const Text('完成'),
            )
          else
            Align(
              alignment: Alignment.centerRight,
              child: FButton(
                variant: FButtonVariant.ghost,
                onPress: () => Navigator.pop(context),
                child: const Text('完成'),
              ),
            ),
        ],
      ),
    );
  }
}