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Generalize to handle token standards other than ERC20 (e.g. eosio) #1

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Generalize to handle token standards other than ERC20 (e.g. eosio) #1

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0a872c9
restarting Raspberry Pi build
chuck-h Aug 2, 2024
603cc5a
Prepare to handle tokens other than erc20
chuck-h Aug 7, 2024
2ce6f53
Use SEEDS token in POS (need vendor config)
chuck-h Aug 7, 2024
63f9899
remove RPi references from README.
chuck-h Aug 7, 2024
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2 changes: 2 additions & 0 deletions README.md
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Expand Up @@ -2,6 +2,7 @@
Mobile app that serves as a Point of Sale application/Kiosk for our NFC wallets.
The app provides "tap to pay" and "tap to top-up" functionality for our NFC wallets.

https://citizenwallet.notion.site/Kiosk-manual-1d5b408be10b446b90ed5e53978dd02e

## Getting Started

Expand All @@ -15,3 +16,4 @@ A few resources to get you started if this is your first Flutter project:
For help getting started with Flutter development, view the
[online documentation](https://docs.flutter.dev/), which offers tutorials,
samples, guidance on mobile development, and a full API reference.

5 changes: 5 additions & 0 deletions android/keystore.properties
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@@ -0,0 +1,5 @@
storePassword=dummy
keyPassword=dummy
keyAlias=dummy
storeFile=dummy

31 changes: 30 additions & 1 deletion assets/config/v3/communities.test.json
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Expand Up @@ -1359,5 +1359,34 @@
}
],
"version": 1
}
},
{
"community": {
"name": "SEEDS",
"description": "This is a community for Chuck",
"url": "https://joinseeds.earth",
"alias": "chuck.citizenwallet.xyz",
"custom_domain": "",
"logo": "https://raw.githubusercontent.com/JoinSEEDS/seeds_light_wallet/master/assets/images/seeds_logo.svg",
"theme": {
"primary": "#00c800"
}
},
"token": {
"standard": "eosio",
"name": "Seeds",
"address": "token.seeds",
"symbol": "SEEDS",
"decimals": 4
},
"scan": {
"url": "https://explorer.telos.net/network",
"name": "Telos zero"
},
"node": {
"url": "https://mainnet.telos.net",
"invoice_url": "https://cc42.xyz/invoice"
},
"version": 1
}
]
3 changes: 2 additions & 1 deletion lib/router/bottom_tabs.dart
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Expand Up @@ -83,7 +83,8 @@ class CustomBottomAppBar extends StatelessWidget {
enabled: !redeeming,
offset: const Offset(0, 40),
itemBuilder: (BuildContext context) => configs
.where((c) => c.cards != null)
.where((c) => c.cards != null
|| c.token.standard == "eosio")
.map<PopupMenuEntry<Config>>(
(c) => PopupMenuItem<Config>(
value: c,
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243 changes: 168 additions & 75 deletions lib/screens/pos/screen.dart
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@@ -1,5 +1,7 @@
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'package:http/http.dart' as http;
import 'package:provider/provider.dart';
import 'package:scanner/router/bottom_tabs.dart';
import 'package:scanner/screens/pos/tabs/amount/amount.dart';
Expand Down Expand Up @@ -89,85 +91,176 @@ class POSScreenState extends State<POSScreen>
return;
}

final deepLinkUrl = dotenv.env['WALLET_DEEPLINK_URL'];
if (deepLinkUrl == null) {
return;
}

_scanLogic.listenToBalance();

await showModalBottomSheet<void>(
context: context,
builder: (modalContext) {
final vendorAddress = modalContext.watch<ScanState>().vendorAddress;
final vendorBalance = modalContext.watch<ScanState>().vendorBalance;

String params =
'?address=$vendorAddress&alias=${config.community.alias}';

params += '&amount=$amount';
params += '&message=$description';

final compressedParams = compress(params);

final deepLink =
'$deepLinkUrl/#/?alias=${config.community.alias}&receiveParams=$compressedParams';

return Container(
height: height,
width: width,
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 16),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
const Text(
'Scan to pay',
style: TextStyle(
fontSize: 24,
fontWeight: FontWeight.bold,
if (config.token.standard == "erc20") {
final deepLinkUrl = dotenv.env['WALLET_DEEPLINK_URL'];
if (deepLinkUrl == null) {
return;
}

_scanLogic.listenToBalance();

await showModalBottomSheet<void>(
context: context,
builder: (modalContext) {
final vendorAddress = modalContext.watch<ScanState>().vendorAddress;
final vendorBalance = modalContext.watch<ScanState>().vendorBalance;

String params =
'?address=$vendorAddress&alias=${config.community.alias}';

params += '&amount=$amount';
params += '&message=$description';

final compressedParams = compress(params);

final deepLink =
'$deepLinkUrl/#/?alias=${config.community.alias}&receiveParams=$compressedParams';

return Container(
height: height,
width: width,
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 16),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
const Text(
'Scan to pay',
style: TextStyle(
fontSize: 24,
fontWeight: FontWeight.bold,
),
),
),
const SizedBox(height: 16),
QR(
data: deepLink,
size: width - 120,
),
const SizedBox(height: 16),
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text(
'$amount ${config.token.symbol}',
style: const TextStyle(
fontSize: 22,
fontWeight: FontWeight.normal,
const SizedBox(height: 16),
QR(
data: deepLink,
size: width - 120,
),
const SizedBox(height: 16),
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text(
'$amount ${config.token.symbol}',
style: const TextStyle(
fontSize: 22,
fontWeight: FontWeight.normal,
),
),
),
],
),
const SizedBox(height: 16),
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text(
description,
style: const TextStyle(
fontSize: 22,
fontWeight: FontWeight.normal,
],
),
const SizedBox(height: 16),
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text(
description,
style: const TextStyle(
fontSize: 22,
fontWeight: FontWeight.normal,
),
),
],
),
],
),
);
},
);

_scanLogic.stopListenToBalance();
} else if (config.token.standard == "eosio"){
// TODO get legit vendor address (12 character eosio account name)
final vendorAddress = "vendor";

// TODO refactor API call - maybe in web3Service
String invoiceQuery =
'?to=$vendorAddress&quantity=$amount&memo=$description&tokenContract=${config.token.address}'+
'&tokenSymbol=${config.token.symbol}&digitsPrecision=${config.token.decimals}';
Map<String, String>? headers;
final mergedHeaders = <String, String>{
'Accept': 'application/json',
'Content-Type': 'application/json; charset=UTF-8',
};
if (headers != null) {
mergedHeaders.addAll(headers);
}
final gg = Uri.parse('${config.node!.invoiceUrl}$invoiceQuery');

final response = await http
.get(
Uri.parse('${config.node!.invoiceUrl}$invoiceQuery'),
headers: mergedHeaders,
)
.timeout(const Duration(seconds: 10));

if (response.statusCode < 200 || response.statusCode >= 300) {
throw Exception('[${response.statusCode}] ${response.reasonPhrase}');
}

String esrData = jsonDecode(utf8.decode(response.bodyBytes))['esr'];

await showModalBottomSheet<void>(
context: context,
builder: (modalContext) {


return Container(
height: height,
width: width,
padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 16),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
const Text(
'Scan to pay',
style: TextStyle(
fontSize: 24,
fontWeight: FontWeight.bold,
),
],
),
],
),
);
},
);

_scanLogic.stopListenToBalance();
),
const SizedBox(height: 16),
QR(
data: esrData,
size: width - 120,
),
const SizedBox(height: 16),
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text(
'$amount ${config.token.symbol}',
style: const TextStyle(
fontSize: 22,
fontWeight: FontWeight.normal,
),
),
],
),
const SizedBox(height: 16),
Row(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text(
description,
style: const TextStyle(
fontSize: 22,
fontWeight: FontWeight.normal,
),
),
],
),
],
),
);
},
);
}
}

void handleScan(
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