Teso_Mobile/lib/Pages/Sub_Pages/PersonalSub/Referral.dart

import 'package:firebase_dynamic_links/firebase_dynamic_links.dart';
import 'package:flutter/material.dart';

import 'package:flutter/cupertino.dart';
import 'package:share_plus/share_plus.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:teso/util/SizeConfig.dart';
import 'package:teso/util/consts.dart';

class Referrals extends StatefulWidget {
  const Referrals({Key key}) : super(key: key);

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

class _ReferralsState extends State<Referrals> {
  String refLink = "";
  @override
  void initState() {
    SharedPreferences.getInstance().then((value) async {
      setState(() {
        refLink = value.getString("referral");
      });
      if (refLink == null) {
        String uid = value.getString("id");
        final ShortDynamicLink shortenedLink =
            await DynamicLinkParameters.shortenUrl(
          Uri.parse(dynamiclinkprefix +
              'https://mobile.tesoapp.com/referral?referrer=' +
              uid +
              dynamiclinktrailing),
          DynamicLinkParametersOptions(
              shortDynamicLinkPathLength:
                  ShortDynamicLinkPathLength.unguessable),
        );
        setState(() {
          refLink = shortenedLink.shortUrl.toString();
        });
        value.setString("referral", refLink);
      }
    });
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    SizeConfig().init(context);
    return Scaffold(
      body: refLink != null && refLink.isNotEmpty
          ? Stack(
              children: [
                Container(
                  height: MediaQuery.of(context).size.height * 0.5,
                  width: MediaQuery.of(context).size.width,
                  decoration: BoxDecoration(
                    gradient: LinearGradient(
                      begin: Alignment.topCenter,
                      end: Alignment.bottomCenter,
                      colors: [tesoGold, tesoAsh, tesoBlue],
                    ),
                  ),
                  child: AppBar(
                    backgroundColor: Colors.transparent,
                    leading: Container(
                      margin: EdgeInsets.all(5),
                      height: 35,
                      width: 35,
                      decoration: BoxDecoration(
                          color: Color.fromRGBO(0, 0, 0, 0.4),
                          shape: BoxShape.circle),
                      child: IconButton(
                        icon: Icon(
                          Icons.arrow_back_ios,
                          color: Colors.white,
                        ),
                        onPressed: () => Navigator.pop(context),
                      ),
                    ),
                  ),
                ),
                Align(
                  alignment: Alignment.center,
                  child: new Column(
                    children: [
                      Container(
                        padding: EdgeInsets.symmetric(
                          horizontal: MediaQuery.of(context).size.width * 0.2,
                        ),
                        margin: EdgeInsets.only(
                            top: SizeConfig.safeBlockHorizontal * 5),
                        child: Text(
                          "Invite Your Friend And Earn Silver Coin",
                          textAlign: TextAlign.center,
                          style: TextStyle(
                            color: Colors.white,
                            fontWeight: FontWeight.w900,
                            fontSize: 20,
                          ),
                        ),
                      ),
                      SizedBox(
                        height: 20,
                      ),
                      Container(
                        width: SizeConfig.safeBlockHorizontal * 50,
                        height: SizeConfig.safeBlockHorizontal * 50,
                        child: Image.asset("assets/images/refer.png"),
                      ),
                    ],
                  ),
                ),
                new Container(
                  alignment: Alignment.topCenter,
                  padding: new EdgeInsets.only(
                      top: MediaQuery.of(context).size.height * .44,
                      right: 10.0,
                      left: 10.0),
                  child: new Container(
                    // height: 80.0,
                    width: MediaQuery.of(context).size.width,
                    child: new Card(
                      //color: Colors.black,
                      elevation: 4.0,
                      child: new ListTile(
                        leading: Container(
                          child: Image.asset("assets/images/wallet.png"),
                        ),
                        title: Text(
                          "Share your referral link and invite your friends via SMS, Email or Whatsapp and Earn up to 250 Silver Coins",
                          style: TextStyle(
                            fontWeight: FontWeight.bold,
                            fontSize: 15,
                          ),
                        ),
                      ),
                    ),
                  ),
                ),
                Align(
                  alignment: Alignment.bottomCenter,
                  child: SingleChildScrollView(
                    scrollDirection: Axis.vertical,
                    child: Container(
                      margin: EdgeInsets.symmetric(
                          vertical: MediaQuery.of(context).size.width * 0.1),
                      height: MediaQuery.of(context).size.height * 0.28,
                      child: new Column(
                        children: [
                          Container(
                            padding: EdgeInsets.symmetric(
                              horizontal:
                                  MediaQuery.of(context).size.width * 0.2,
                            ),
                            child: Text(
                              "YOUR REFERRAL LINK",
                              textAlign: TextAlign.center,
                              style: TextStyle(
                                fontWeight: FontWeight.normal,
                                fontSize: 18,
                              ),
                            ),
                          ),
                          SizedBox(
                            height: 10,
                          ),
                          Container(
                            decoration: BoxDecoration(
                              border: Border.all(
                                width: 2,
                                style: BorderStyle.solid,
                              ),
                            ),
                            padding: EdgeInsets.symmetric(
                              vertical: 10,
                              horizontal:
                                  MediaQuery.of(context).size.width * 0.1,
                            ),
                            width: MediaQuery.of(context).size.width * 0.8,
                            child: Text(
                              refLink,
                              textAlign: TextAlign.center,
                              style: TextStyle(
                                fontWeight: FontWeight.normal,
                                fontSize: 15,
                              ),
                            ),
                          ),
                          Container(
                            width: MediaQuery.of(context).size.width * 0.4,
                            margin: EdgeInsets.symmetric(vertical: 15),
                            decoration: BoxDecoration(
                              borderRadius: BorderRadius.all(
                                Radius.circular(25.0),
                              ),
                              gradient: LinearGradient(
                                begin: Alignment.topCenter,
                                end: Alignment.bottomCenter,
                                colors: [
                                  accentMain,
                                  darkAccent,
                                ],
                              ),
                            ),
                            child: TextButton.icon(
                              onPressed: () => Share.share(
                                  'Join Teso App using my referral link and earn 5 silver coins ' +
                                      refLink,
                                  subject: 'Teso App!'),
                              icon: Icon(
                                Icons.share,
                                color: Colors.white,
                              ),
                              label: Text(
                                "Share",
                                style: TextStyle(
                                  color: Colors.white,
                                ),
                              ),
                            ),
                          ),
                        ],
                      ),
                    ),
                  ),
                )
              ],
            )
          : Container(
              width: double.infinity,
              height: double.infinity,
              child: Center(
                child: CupertinoActivityIndicator(
                  animating: true,
                  radius: 15,
                ),
              ),
            ),
    );
  }
}