part of 'studio_app.dart';

class StudioOperationsPage extends StatefulWidget {
  const StudioOperationsPage({
    super.key,
    required this.tab,
    required this.runtime,
    required this.onAction,
  });

  final StudioTab tab;
  final StudioRuntime runtime;
  final void Function(String title, String detail) onAction;

  @override
  State<StudioOperationsPage> createState() => _StudioOperationsPageState();
}

class _StudioOperationsPageState extends State<StudioOperationsPage> {
  bool _loading = false;
  String _status = '等待执行';
  String _detail = '';
  Map<String, dynamic>? _lastData;

  Future<void> _downloadConfigs() async {
    setState(() {
      _loading = true;
      _status = '正在下载配置包...';
      _detail = '';
      _lastData = null;
    });
    try {
      final result = await widget.runtime.client.downloadModelConfigs(
        session: widget.runtime.session,
      );
      final savedPath = await saveBytesToFile(
        bytes: result.bytes,
        suggestedName: result.filename,
      );
      if (!mounted) {
        return;
      }
      setState(() {
        _status = savedPath == null
            ? '已下载配置包，但未保存'
            : '配置包已保存';
        _detail = savedPath == null
            ? '文件名：${result.filename}\n大小：${result.bytes.length} bytes'
            : '文件：$savedPath\n文件名：${result.filename}\n大小：${result.bytes.length} bytes';
        _lastData = <String, dynamic>{
          'filename': result.filename,
          'contentType': result.contentType,
          'statusCode': result.statusCode,
          'savedPath': savedPath,
          'size': result.bytes.length,
        };
      });
      widget.onAction('下载配置', result.filename);
    } catch (error, stackTrace) {
      _printError('下载配置失败', error, stackTrace);
      if (!mounted) {
        return;
      }
      setState(() {
        _status = '下载失败';
        _detail = _normalizeError(error);
      });
    } finally {
      if (mounted) {
        setState(() {
          _loading = false;
        });
      }
    }
  }

  Future<void> _repairDepartment() async {
    setState(() {
      _loading = true;
      _status = '正在执行部门修复...';
      _detail = '';
      _lastData = null;
    });
    try {
      final result = await widget.runtime.client.repairDepartment(
        session: widget.runtime.session,
      );
      if (!mounted) {
        return;
      }
      setState(() {
        _status = result.success ? '修复完成' : '修复失败';
        _detail = _formatActionResult(result);
        _lastData = result.raw;
      });
      widget.onAction('部门修复', result.message.isNotEmpty ? result.message : '已执行');
    } catch (error, stackTrace) {
      _printError('部门修复失败', error, stackTrace);
      if (!mounted) {
        return;
      }
      setState(() {
        _status = '修复失败';
        _detail = _normalizeError(error);
      });
    } finally {
      if (mounted) {
        setState(() {
          _loading = false;
        });
      }
    }
  }

  void _printError(String title, Object error, StackTrace stackTrace) {
    debugPrint('========== $title ==========');
    debugPrint('error: $error');
    debugPrint('stackTrace:\n$stackTrace');
    debugPrint('========== $title end ==========');
  }

  String _normalizeError(Object error) {
    final text = error.toString();
    const marker = 'Bad state: ';
    if (text.startsWith(marker)) {
      return text.substring(marker.length);
    }
    return text;
  }

  String _formatActionResult(StudioBackendActionResult result) {
    final buffer = StringBuffer()
      ..writeln('code: ${result.code.isEmpty ? '空' : result.code}')
      ..writeln('message: ${result.message.isEmpty ? '无' : result.message}')
      ..writeln('data: ${const JsonEncoder.withIndent('  ').convert(result.data)}')
      ..writeln('raw: ${const JsonEncoder.withIndent('  ').convert(result.raw)}');
    return buffer.toString();
  }

  @override
  Widget build(BuildContext context) {
    final isRepair = widget.tab.pageType == StudioPageType.repair;

    final primaryAction = isRepair ? _repairDepartment : _downloadConfigs;
    final primaryLabel = isRepair ? '执行修复' : '下载配置';
    final primaryIcon = isRepair ? Icons.build_rounded : Icons.download_rounded;
    final secondaryHint = isRepair
        ? '部门修复会直接调用后端接口，执行后请刷新相关页面确认数据。'
        : '下载配置会调用后端压缩包接口，并让你选择本地保存位置。';

    return SingleChildScrollView(
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.stretch,
        children: [
          Card(
            child: Padding(
              padding: const EdgeInsets.all(18),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    widget.tab.title,
                    style: Theme.of(context).textTheme.headlineSmall
                        ?.copyWith(fontWeight: FontWeight.w700),
                  ),
                  const SizedBox(height: 6),
                  Text(
                    widget.tab.summary,
                    style: Theme.of(context).textTheme.bodyMedium
                        ?.copyWith(color: _mutedColor(context)),
                  ),
                  const SizedBox(height: 16),
                  LinearProgressIndicator(
                    value: _loading ? null : 1.0,
                    minHeight: 10,
                    borderRadius: BorderRadius.circular(999),
                  ),
                ],
              ),
            ),
          ),
          const SizedBox(height: 16),
          Card(
            child: Padding(
              padding: const EdgeInsets.all(18),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    '操作说明',
                    style: Theme.of(context).textTheme.titleLarge
                        ?.copyWith(fontWeight: FontWeight.w700),
                  ),
                  const SizedBox(height: 8),
                  Text(secondaryHint),
                  const SizedBox(height: 14),
                  Wrap(
                    spacing: 10,
                    runSpacing: 10,
                    children: [
                      FilledButton.icon(
                        onPressed: _loading ? null : primaryAction,
                        icon: _loading
                            ? const SizedBox(
                                width: 16,
                                height: 16,
                                child: CircularProgressIndicator(strokeWidth: 2),
                              )
                            : Icon(primaryIcon),
                        label: Text(primaryLabel),
                      ),
                      FilledButton.tonalIcon(
                        onPressed: _loading
                            ? null
                            : () => widget.onAction('记录动作', widget.tab.title),
                        icon: const Icon(Icons.history_rounded),
                        label: const Text('记录动作'),
                      ),
                    ],
                  ),
                ],
              ),
            ),
          ),
          const SizedBox(height: 16),
          Card(
            child: Padding(
              padding: const EdgeInsets.all(18),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.start,
                children: [
                  Text(
                    '执行结果',
                    style: Theme.of(context).textTheme.titleLarge
                        ?.copyWith(fontWeight: FontWeight.w700),
                  ),
                  const SizedBox(height: 10),
                  SelectableText(
                    _status,
                    style: Theme.of(context).textTheme.bodyLarge
                        ?.copyWith(fontWeight: FontWeight.w700),
                  ),
                  if (_detail.isNotEmpty) ...[
                    const SizedBox(height: 10),
                    SelectableText(
                      _detail,
                      style: Theme.of(context).textTheme.bodyMedium,
                    ),
                  ],
                  if (_lastData != null) ...[
                    const SizedBox(height: 12),
                    SelectableText(
                      const JsonEncoder.withIndent('  ').convert(_lastData),
                      style: const TextStyle(fontFamily: 'monospace', height: 1.45),
                    ),
                  ],
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }
}