import 'package:flutter/material.dart';
import 'package:chicken_farm/components/vb_app_bar.dart';
import 'package:chicken_farm/components/vb_dict_select.dart';
import 'package:chicken_farm/core/utils/toast.dart';

class IndividualCullingPage extends StatefulWidget {
  const IndividualCullingPage({super.key});

  @override
  State<IndividualCullingPage> createState() => _IndividualCullingPageState();
}

class _IndividualCullingPageState extends State<IndividualCullingPage> {
  String? _rfid;
  String? _cullReason;
  String? _disposalMethod;
  bool _isScanningRfid = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: const VberAppBar(title: '个体淘汰', showLeftButton: true),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            // 电子编号区域
            _buildRfidSection(),
            const SizedBox(height: 20),
            // 淘汰原因
            _buildCullReasonSection(),
            const SizedBox(height: 20),
            // 处置方式
            _buildDisposalMethodSection(),
            const SizedBox(height: 30),
            // 提交按钮
            SizedBox(
              width: double.infinity,
              child: ElevatedButton(
                onPressed:
                    _rfid != null &&
                        _cullReason != null &&
                        _disposalMethod != null
                    ? _handleSubmit
                    : null,
                style: ElevatedButton.styleFrom(
                  backgroundColor:
                      _rfid != null &&
                          _cullReason != null &&
                          _disposalMethod != null
                      ? Colors.blue
                      : Colors.grey,
                  foregroundColor: Colors.white,
                ),
                child: const Text('提交'),
              ),
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildRfidSection() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        const Text('电子编号', style: TextStyle(fontWeight: FontWeight.bold)),
        const SizedBox(height: 10),
        Container(
          padding: const EdgeInsets.fromLTRB(16, 2, 16, 2),
          decoration: BoxDecoration(
            border: Border.all(color: Colors.grey),
            borderRadius: BorderRadius.circular(8),
          ),
          child: Row(
            children: [
              Expanded(
                child: Text(
                  _rfid ?? '未扫描',
                  style: TextStyle(
                    color: _rfid != null ? Colors.black : Colors.grey,
                    fontSize: 16,
                  ),
                ),
              ),
              IconButton(
                icon: _isScanningRfid
                    ? const SizedBox(
                        width: 20,
                        height: 20,
                        child: CircularProgressIndicator(strokeWidth: 2),
                      )
                    : const Icon(Icons.qr_code_scanner, size: 20),
                onPressed: _simulateScanRfid,
              ),
            ],
          ),
        ),
      ],
    );
  }

  Widget _buildCullReasonSection() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        const Text('淘汰原因', style: TextStyle(fontWeight: FontWeight.bold)),
        const SizedBox(height: 10),
        Container(
          padding: const EdgeInsets.fromLTRB(16, 2, 16, 2),
          decoration: BoxDecoration(
            border: Border.all(color: Colors.grey),
            borderRadius: BorderRadius.circular(8),
          ),
          child: VberDictSelect(
            dictType: 'chicken_cull_reason',
            value: _cullReason,
            onChanged: (value) {
              setState(() {
                _cullReason = value;
              });
            },
            hint: '请选择淘汰原因',
            hideUnderline: true,
          ),
        ),
      ],
    );
  }

  Widget _buildDisposalMethodSection() {
    return Column(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: [
        const Text('处置方式', style: TextStyle(fontWeight: FontWeight.bold)),
        const SizedBox(height: 10),
        Container(
          padding: const EdgeInsets.fromLTRB(16, 2, 16, 2),
          decoration: BoxDecoration(
            border: Border.all(color: Colors.grey),
            borderRadius: BorderRadius.circular(8),
          ),
          child: VberDictSelect(
            dictType: 'chicken_disposal_method',
            value: _disposalMethod,
            onChanged: (value) {
              setState(() {
                _disposalMethod = value;
              });
            },
            hint: '请选择处置方式',
            hideUnderline: true,
          ),
        ),
      ],
    );
  }

  // 模拟扫描电子编号
  void _simulateScanRfid() {
    if (_isScanningRfid) return;

    setState(() {
      _isScanningRfid = true;
    });

    // 模拟扫描过程
    Future.delayed(const Duration(seconds: 1), () {
      if (mounted) {
        setState(() {
          _rfid = 'RFID-${DateTime.now().millisecondsSinceEpoch}';
          _isScanningRfid = false;
        });
        ToastUtil.success('电子编号扫描成功');
      }
    });
  }

  // 提交数据
  void _handleSubmit() {
    // 在实际应用中，这里会发送数据到服务器
    ScaffoldMessenger.of(context).showSnackBar(
      const SnackBar(content: Text('个体淘汰提交成功'), backgroundColor: Colors.green),
    );

    // 提交后重置表单
    setState(() {
      _rfid = null;
      _cullReason = null;
      _disposalMethod = null;
    });
  }
}