ChickenFarm/UI/CF.APP/chicken_farm/lib/pages/sample/sample_detail_page.dart

import 'package:flutter/material.dart';
import 'package:chicken_farm/components/vb_app_bar.dart';
import 'package:chicken_farm/modes/experiment/sample/sample.dart';
import 'package:chicken_farm/modes/experiment/sample/sample_flow_log.dart';
import 'package:chicken_farm/apis/experiment/_sample.dart';
import 'package:chicken_farm/core/utils/toast.dart';
import 'package:chicken_farm/core/utils/logger.dart';
import 'package:chicken_farm/core/utils/datetime_util.dart';

class SampleDetailPage extends StatefulWidget {
  final String id;

  const SampleDetailPage({super.key, required this.id});

  @override
  State<SampleDetailPage> createState() => _SampleDetailPageState();
}

class _SampleDetailPageState extends State<SampleDetailPage> {
  SampleModel? _sample;
  List<SampleFlowLogModel> _flowLogs = [];
  bool _isLoading = true;

  @override
  void initState() {
    super.initState();
    // 将 _loadSampleData 调用推迟到下一帧，避免在构建过程中修改状态
    WidgetsBinding.instance.addPostFrameCallback((_) {
      _loadSampleData();
    });
  }

  Future<void> _loadSampleData() async {
    try {
      final sampleFuture = SampleApi().querySample(widget.id);
      final flowLogsFuture = SampleApi().queryFlowLogs(widget.id);

      final results = await Future.wait([sampleFuture, flowLogsFuture]);

      setState(() {
        _sample = results[0] as SampleModel;
        _flowLogs = results[1] as List<SampleFlowLogModel>;
        _isLoading = false;
      });
    } catch (e, stackTrace) {
      logger.e('加载样品详情失败: $e, error: e, stackTrace: $stackTrace');
      setState(() {
        _isLoading = false;
      });
      ToastUtil.error('加载样品详情失败: $e');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: const VberAppBar(title: '样品详情', showLeftButton: true),
      body: _buildBody(),
    );
  }

  Widget _buildBody() {
    if (_isLoading) {
      return const Center(child: CircularProgressIndicator());
    }

    if (_sample == null) {
      return const Center(
        child: Text(
          '无法加载样品信息',
          style: TextStyle(fontSize: 16, color: Colors.grey),
        ),
      );
    }

    return SingleChildScrollView(
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          _buildSampleInfo(),
          const Divider(),
          _buildFlowLogsTitle(),
          _buildFlowLogsList(),
        ],
      ),
    );
  }

  Widget _buildSampleInfo() {
    return Container(
      width: double.infinity,
      padding: const EdgeInsets.all(16.0),
      child: Card(
        child: Padding(
          padding: const EdgeInsets.all(16.0),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.start,
            children: [
              Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: [
                  Text(
                    _sample!.sampleName,
                    style: Theme.of(context).textTheme.titleLarge,
                  ),
                  Chip(
                    label: Text(
                      _getSampleStatusText(_sample!.sampleStatus),
                      style: TextStyle(
                        color: _getSampleStatusColor(_sample!.sampleStatus),
                      ),
                    ),
                  ),
                ],
              ),
              const SizedBox(height: 16),
              _buildInfoRow('样品编号', _sample!.id.toString()),
              _buildInfoRow('样品类型', _getSampleTypeText(_sample!.sampleType)),
              _buildInfoRow('取样批次', _sample!.batchNum),
              _buildInfoRow('取样翅号', _sample!.wingTagNum),
              _buildInfoRow(
                '取样时间',
                DateTimeUtil.toStandardString(_sample!.sampleTime),
              ),
              _buildInfoRow('取样人', _sample!.createByName),
              const SizedBox(height: 8),
              Text('样品描述: ${_sample!.description}'),
            ],
          ),
        ),
      ),
    );
  }

  Widget _buildInfoRow(String label, String value) {
    return Padding(
      padding: const EdgeInsets.symmetric(vertical: 4.0),
      child: Row(
        children: [
          SizedBox(
            width: 80,
            child: Text(
              '$label:',
              style: const TextStyle(fontWeight: FontWeight.bold),
            ),
          ),
          Expanded(child: Text(value)),
        ],
      ),
    );
  }

  Widget _buildFlowLogsTitle() {
    return Padding(
      padding: const EdgeInsets.all(16.0),
      child: Text('流转记录', style: Theme.of(context).textTheme.titleLarge),
    );
  }

  Widget _buildFlowLogsList() {
    if (_flowLogs.isEmpty) {
      return const Center(
        child: Padding(
          padding: EdgeInsets.all(32.0),
          child: Text(
            '暂无流转记录',
            style: TextStyle(fontSize: 16, color: Colors.grey),
          ),
        ),
      );
    }

    return ListView.builder(
      shrinkWrap: true,
      physics: const NeverScrollableScrollPhysics(),
      itemCount: _flowLogs.length,
      itemBuilder: (context, index) {
        final log = _flowLogs[index];
        return _buildFlowLogItem(log);
      },
    );
  }

  Widget _buildFlowLogItem(SampleFlowLogModel log) {
    return Card(
      margin: const EdgeInsets.symmetric(horizontal: 16, vertical: 8),
      child: ListTile(
        title: Text(log.handlerName),
        subtitle: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text('查询时间: ${DateTimeUtil.toStandardString(log.handleTime)}'),
          ],
        ),
      ),
    );
  }

  String _getSampleStatusText(int status) {
    switch (status) {
      case 0:
        return '待处理';
      case 1:
        return '处理中';
      case 2:
        return '已完成';
      default:
        return '未知状态';
    }
  }

  Color _getSampleStatusColor(int status) {
    switch (status) {
      case 0:
        return Colors.orange;
      case 1:
        return Colors.blue;
      case 2:
        return Colors.green;
      default:
        return Colors.grey;
    }
  }

  String _getSampleTypeText(int type) {
    switch (type) {
      case 1:
        return '血液样品';
      case 2:
        return '组织样品';
      case 3:
        return '粪便样品';
      default:
        return '未知类型';
    }
  }
}