import 'package:flutter/material.dart';
import 'package:item_tracker/database/sqlite_operation.dart';

class AddItemScreen extends StatefulWidget {
  @override
  _FromTestRouteSate createState() => _FromTestRouteSate();
}

class _FromTestRouteSate extends State<AddItemScreen> {
  TextEditingController _nameController = TextEditingController();
  TextEditingController _contentController = TextEditingController();
  GlobalKey<FormState> _formKey = GlobalKey<FormState>();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('新增物品'),
      ),
      body: Builder(builder: (context) {
        return Form(
          key: _formKey, // 设置 globalKey，用于后面获取 FormState
          autovalidateMode: AutovalidateMode.onUserInteraction,
          child: Column(
            children: <Widget>[
              TextFormField(
                autofocus: true,
                controller: _nameController,
                decoration: InputDecoration(
                  labelText: "名称",
                  hintText: "请输入物品名称",
                  icon: Icon(Icons.person),
                ),
                maxLength: 20,
                // 校验用户名
                validator: (v) {
                  if (v == null || v.trim().isEmpty) {
                    print('名称不能为空');
                    return "物品名称不能为空";
                  }
                  return null;
                },
              ),
              TextFormField(
                controller: _contentController,
                decoration: InputDecoration(
                  labelText: "物品描述",
                  hintText: "请输入物品描述",
                  icon: Icon(Icons.lock),
                ),
                maxLength: 200,
              ),
              // 登录按钮
              Padding(
                padding: const EdgeInsets.only(top: 28.0),
                child: Row(
                  children: <Widget>[
                    Expanded(
                      child: ElevatedButton(
                        child: Padding(
                          padding: const EdgeInsets.all(16.0),
                          child: Text("提交"),
                        ),
                        onPressed: () {
                          if (_formKey.currentState!.validate()) {
                            // 验证通过提交数据
                            print('物品名称：${_nameController.text}');
                            print('物品描述：${_contentController.text}');

                            insertItem(_nameController.text, _contentController.text);
                            // 显示操作成功的提示
                            ScaffoldMessenger.of(context).showSnackBar(SnackBar(
                              content: Text('提交成功'),
                              duration: Duration(seconds: 1),
                            ));
                            // 返回上一页
                            Navigator.pop(context, true);
                          }
                        },
                      ),
                    ),
                  ],
                ),
              )
            ],
          ),
        );
      }),
    );
  }
}