import 'package:flutter/material.dart';
import '/common/colorCom.dart';
import 'package:wms_app/utils/dialogUtils.dart';
import 'package:wms_app/api_client/stock_out.dart';
import 'dart:convert';

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

  @override
  State<StockOutEmpty> createState() => _CallEmptyCartPageState();
}

class _CallEmptyCartPageState extends State<StockOutEmpty> {
  int vehicle_0 = 0, vehicle_1 = 1;
  String status_0 = "不可用", status_1 = "不可用";

  @override
  void initState() {
    super.initState();
    _fetchData();
  }

  Future<void> _fetchData() async {
    await StockOutApi.getVehicleIsEmpty(vehicle_0).then((response) {
      if (response["code"] != 200) {
        var thisContext = context;
        if (thisContext.mounted) {
          DialogUtils.showWarningMessage(thisContext, "警告", "服务器请求失败",
              btnLabel: "我知道了");
        }
        return;
      }
      final data = Map<String, dynamic>.from(jsonDecode(response["data"]));
      if (data["code"] == 200) {
        // 请求成功
        if (data["data"]["isEmpty"] == 1 && data["data"]["isLock"] == 0) {
          status_0 = "可用";
          return;
        }
      }
      return;
    }).catchError((err) {
      var thisContext = context;
      if (thisContext.mounted) {
        DialogUtils.showErrorMessage(
            thisContext, "请求发生错误", "请求服务器发生错误：${err.toString()}",
            btnLabel: "我知道了");
      }
      return;
    });

    await StockOutApi.getVehicleIsEmpty(vehicle_1).then((response) {
      if (response["code"] != 200) {
        var thisContext = context;
        if (thisContext.mounted) {
          DialogUtils.showWarningMessage(thisContext, "警告", "服务器请求失败",
              btnLabel: "我知道了");
        }
        return;
      }
      final data = Map<String, dynamic>.from(jsonDecode(response["data"]));
      if (data["code"] == 200) {
        // 请求成功
        if (data["data"]["isEmpty"] == 1 && data["data"]["isLock"] == 0) {
          status_1 = "可用";
          return;
        }
      }
      return;
    }).catchError((err) {
      var thisContext = context;
      if (thisContext.mounted) {
        DialogUtils.showErrorMessage(
            thisContext, "请求发生错误", "请求服务器发生错误：${err.toString()}",
            btnLabel: "我知道了");
      }
      return;
    });
  }

  String selectedOption = "1";
  String status = "可用";
  bool isLoading = false;

  void callEmptyCart() {
    if ((selectedOption == "1" && status_0 == "不可用") ||
        (selectedOption == "2" && status_1 == "不可用")) {
      DialogUtils.showWarningMessage(context, "警告", "选中的空托不可用",
          btnLabel: "我知道了");
    } else {
      StockOutApi.addStockOut().then((response) {
        if (response["code"] != 200) {
          var thisContext = context;
          if (thisContext.mounted) {
            DialogUtils.showWarningMessage(thisContext, "警告", "服务器请求失败",
                btnLabel: "我知道了");
          }
          return;
        }
        final data = Map<String, dynamic>.from(jsonDecode(response["data"]));
        if (data["code"] == 200) {
          DialogUtils.showSuccessMessage(context, "成功", "空托已呼叫",
              btnLabel: "我知道了");
          return;
        }
      }).catchError((err) {
        var thisContext = context;
        if (thisContext.mounted) {
          DialogUtils.showErrorMessage(
              thisContext, "请求发生错误", "请求服务器发生错误：${err.toString()}",
              btnLabel: "我知道了");
        }
        return;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        iconTheme: const IconThemeData(color: Colors.white),
        leading: IconButton(
            onPressed: () {
              Navigator.of(context).pop();
            },
            icon: const Icon(Icons.arrow_back)),
        centerTitle: true,
        backgroundColor: ColorCommon.colorScheme,
        title: const Text(
          "呼叫空托",
          style: TextStyle(color: Colors.white),
        ),
      ),
      body: FutureBuilder<void>(
        future: _fetchData(), // 使用FutureBuilder来等待_fetchData的完成
        builder: (context, snapshot) {
          if (snapshot.connectionState == ConnectionState.waiting) {
            return Center(child: CircularProgressIndicator()); // 显示加载中
          } else if (snapshot.hasError) {
            return Center(
              child: Text("请求失败: ${snapshot.error.toString()}"),
            );
          } else {
            return Center(
              child: Padding(
                padding: const EdgeInsets.only(top: 5, left: 10, right: 10),
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Row(
                      children: [
                        Expanded(
                          child: DropdownButton<String>(
                            value: selectedOption,
                            isExpanded: true,
                            items: [
                              DropdownMenuItem(
                                value: "1",
                                child: Text("1 - $status_0"),
                              ),
                              DropdownMenuItem(
                                value: "2",
                                child: Text("2 - $status_1"),
                              ),
                            ],
                            onChanged: (value) {
                              setState(() {
                                selectedOption = value!;
                              });
                            },
                          ),
                        ),
                        Padding(
                          padding: const EdgeInsets.only(left: 10),
                          child: ElevatedButton(
                            onPressed: isLoading ? null : callEmptyCart,
                            style: ButtonStyle(
                              backgroundColor: WidgetStateProperty.all(
                                  ColorCommon.colorScheme),
                            ),
                            child: Text("出库",
                                style: TextStyle(color: Colors.white)),
                          ),
                        ),
                      ],
                    ),
                  ],
                ),
              ),
            );
          }
        },
      ),
    );
  }
}