import 'package:Parlando/login/models/login_entity.dart';
import 'package:Parlando/net/dio_utils.dart';
import 'package:Parlando/net/http_api.dart';
import 'package:Parlando/util/toast_utils.dart';
import 'package:flustars/flustars.dart';
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:Parlando/common/permission_request_widget.dart';
import 'package:Parlando/common/protocol_model.dart';
import 'package:Parlando/home/webview_page.dart';
import 'package:Parlando/login/widgets/my_text_field.dart';
import 'package:Parlando/res/constant.dart';
import 'package:Parlando/res/resources.dart';
import 'package:Parlando/routers/fluro_navigator.dart';
import 'package:Parlando/routers/routers.dart';
import 'package:Parlando/util/change_notifier_manage.dart';
import 'package:Parlando/util/other_utils.dart';
import 'package:Parlando/widgets/my_app_bar.dart';
import 'package:Parlando/widgets/my_button.dart';
import 'package:Parlando/widgets/my_scroll_view.dart';
import 'package:getwidget/getwidget.dart';

import '../login_router.dart';

import 'package:flutter_gen/gen_l10n/Parlando_localizations.dart';
import 'package:Parlando/extension/int_extension.dart';

import 'package:permission_handler/permission_handler.dart';

/// design/1注册登录/index.html
class LoginPage extends StatefulWidget {
  const LoginPage({Key? key}) : super(key: key);

  @override
  _LoginPageState createState() => _LoginPageState();
}

class _LoginPageState extends State<LoginPage>
    with ChangeNotifierMixin<LoginPage>, ProtocolModel {
  //定义一个controller
  final TextEditingController _nameController = TextEditingController();
  final TextEditingController _passwordController = TextEditingController();
  final FocusNode _nodeText1 = FocusNode();
  final FocusNode _nodeText2 = FocusNode();
  bool _clickable = false;
  bool _isLoading = false;

  @override
  Map<ChangeNotifier, List<VoidCallback>?>? changeNotifier() {
    final List<VoidCallback> callbacks = <VoidCallback>[_verify];
    return <ChangeNotifier, List<VoidCallback>?>{
      _nameController: callbacks,
      _passwordController: callbacks,
      _nodeText1: null,
      _nodeText2: null,
    };
  }

  @override
  void initState() {
    super.initState();
    WidgetsBinding.instance!.addPostFrameCallback((_) {
      /// 显示状态栏和导航栏
      SystemChrome.setEnabledSystemUIMode(SystemUiMode.manual,
          overlays: [SystemUiOverlay.top, SystemUiOverlay.bottom]);
    });
    _nameController.text = SpUtil.getString(Constant.phone).nullSafe;

    List<String> _list = [
      "为您更好的体验应用，所以需要获取您的手机文件存储权限，以保存您的一些偏好设置",
      "您已拒绝权限，所以无法保存您的一些偏好设置，将无法使用APP",
      "您已拒绝权限，请在设置中心中同意APP的权限请求",
      "其他错误"
    ];

    Future.delayed(
      Duration.zero,
          () {
        NavigatorUtils.pushPageByFade(
          context: context,
          //目标页面
          targetPage: PermissionRequestWidget(
            //所需要申请的权限
            permission: Permission.camera,
            //显示关闭应用按钮
            isCloseApp: true,
            //提示文案
            permissionList: _list,
          ),
          //权限申请结果
          dismissCallBack: (value) {
            showPrivacyPage();
          },
        );
      },
    );
  }

  void showPrivacyPage() async {
    bool isAgreement = await showProtocolFunction(context);
    if (isAgreement) {
      // next();
    } else {
      SystemChannels.platform.invokeMethod("SystemNavigator.pop");
    }
  }

  void _verify() {
    final String name = _nameController.text;
    final String password = _passwordController.text;
    bool clickable = true;
    if (name.isEmpty || name.length < 5) {
      clickable = false;
    }
    if (password.isEmpty || password.length < 6) {
      clickable = false;
    }

    /// 状态不一样再刷新，避免不必要的setState
    if (clickable != _clickable) {
      setState(() {
        _clickable = clickable;
      });
    }
  }

  void _login() {
    setState(() {});
    _isLoading = true;
    setState(() {});
    Map<String, String> params = <String, String>{
      "email": _nameController.text,
      "password": _passwordController.text,
    };
    DioUtils.instance.asyncRequestNetwork<LoginEntity>(
      Method.post,
      HttpApi.login,
      params: params,
      onSuccess: (data) {
        SpUtil.putString(Constant.userToken, data!.data!.token!);
        NavigatorUtils.push(context, Routes.home, clearStack: true);
        _isLoading = false;
      },
      onError: (code, msg) {
        Toast.show(msg.toString());
        _isLoading = false;
        setState(() {});
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: MyAppBar(
        isBack: false,
        isTransparent: true,
        onPressed: () {
          NavigatorUtils.push(context, LoginRouter.smsLoginPage);
        },
        homeActionWidgets: TextButton(
          onPressed: () {
            NavigatorUtils.push(context, LoginRouter.smsLoginPage);
          },
          child: Text(
            "验证码登录",
            style: TextStyle(
              color: Colors.black45,
              fontSize: 15.px,
            ),
          ),
        ),
      ),
      body: Stack(
        children: [
          MyScrollView(
            keyboardConfig: Utils.getKeyboardActionsConfig(context, <FocusNode>[
              _nodeText1,
              _nodeText2,
            ]),
            padding: EdgeInsets.only(
              left: 16.px,
              right: 16.px,
              top: 20.px,
            ),
            children: _buildBody,
          ),
          Container(
            child: _isLoading ? const GFLoader() : null,
          ),
        ],
      ),
    );
  }

  List<Widget> get _buildBody => <Widget>[
    Text(
      ParlandoLocalizations.of(context).passwordLogin,
      style: TextStyles.textBold26,
    ),
    Gaps.vGap16,
    MyTextField(
      key: const Key('email'),
          focusNode: _nodeText1,
          controller: _nameController,
          maxLength: 100,
          keyboardType: TextInputType.emailAddress,
          hintText: ParlandoLocalizations.of(context).inputEmailHint,
        ),
    Gaps.vGap8,
    MyTextField(
      key: const Key('password'),
      keyName: 'password',
      focusNode: _nodeText2,
      isInputPwd: true,
      controller: _passwordController,
      keyboardType: TextInputType.visiblePassword,
      hintText: ParlandoLocalizations.of(context).inputPasswordHint,
    ),
    Gaps.vGap24,
    Text.rich(
      TextSpan(
          text: '登录即代表同意并阅读',
          style: const TextStyle(fontSize: 12, color: Color(0xFF999999)),
          children: [
            TextSpan(
              text: '《用户协议》',
              style: TextStyle(color: Theme.of(context).primaryColor),
              recognizer: TapGestureRecognizer()
                ..onTap = () {
                  Navigator.of(context)
                      .push(MaterialPageRoute(builder: (context) {
                    return const WebViewPage(
                      title: '《用户协议》',
                      url: Constant.protocolUrl,
                    );
                  }));
                },
            ),
            const TextSpan(text: ' & '),
            TextSpan(
              text: '《隐私政策》',
              style: TextStyle(color: Theme.of(context).primaryColor),
              recognizer: TapGestureRecognizer()
                ..onTap = () {
                  Navigator.of(context).push(
                    MaterialPageRoute(
                      builder: (context) {
                        return const WebViewPage(
                          title: '《隐私政策》',
                          url: Constant.privacyUrl,
                        );
                      },
                    ),
                  );
                },
            ),
          ]),
    ),
    Gaps.vGap16,
    MyButton(
      key: const Key('login'),
      onPressed: _clickable ? _login : null,
      text: ParlandoLocalizations.of(context).login,
    ),
    Container(
      height: 40.px,
      alignment: Alignment.centerRight,
      child: GestureDetector(
        child: Text(
          ParlandoLocalizations.of(context).forgotPasswordLink,
          key: const Key('forgotPassword'),
          style: Theme.of(context).textTheme.subtitle2,
        ),
        onTap: () =>
            NavigatorUtils.push(context, LoginRouter.resetPasswordPage),
      ),
    ),
    Gaps.vGap16,
    Container(
        alignment: Alignment.center,
        child: GestureDetector(
          child: Text(
            ParlandoLocalizations.of(context).noAccountRegisterLink,
            key: const Key('noAccountRegister'),
            style: TextStyle(color: Theme.of(context).primaryColor),
          ),
          onTap: () =>
              NavigatorUtils.push(context, LoginRouter.registerPage),
        ))
  ];
}