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import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:gecko/globals.dart';
import 'package:graphql_flutter/graphql_flutter.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:sentry/sentry.dart' as sentry;
import 'package:qrscan/qrscan.dart' as scanner;
import 'package:crypto/crypto.dart';
import 'package:fast_base58/fast_base58.dart';
class HistoryProvider with ChangeNotifier {
String pubkey = '';

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HistoryProvider(this.pubkey);
final TextEditingController outputPubkey = TextEditingController();
Future scan() async {
await Permission.camera.request();
String barcode;
try {
barcode = await scanner.scan();
} catch (e, stack) {
print(e);
if (kReleaseMode) {
await sentry.Sentry.captureException(
e,
stackTrace: stack,
);
}
return 'false';
}
if (barcode != null) {
isPubkey(barcode);
} else {
return 'false';
}
return barcode;
}
String isPubkey(pubkey) {
final RegExp regExp = new RegExp(
r'^[a-zA-Z0-9]+$',
caseSensitive: false,
multiLine: false,
);
if (regExp.hasMatch(pubkey) == true &&
pubkey.length > 42 &&
pubkey.length < 45) {
print("C'est une pubkey !!!");
this.pubkey = pubkey;
List<int> pubkeyByte = Base58Decode(pubkey);
Digest pubkeyS256 = sha256.convert(sha256.convert(pubkeyByte).bytes);
String pubkeyCheksum = Base58Encode(pubkeyS256.bytes);
String pubkeyChecksumShort = truncate(pubkeyCheksum, 3,
omission: "", position: TruncatePosition.end);
omission: String.fromCharCode(0x2026),
position: TruncatePosition.end) +
truncate(pubkey, 4, omission: "", position: TruncatePosition.start) +
':$pubkeyChecksumShort';
print(pubkeyShort);
notifyListeners();
return pubkey;
}
return '';
}

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// Pi: D2meevcAHFTS2gQMvmRW5Hzi25jDdikk4nC4u1FkwRaU // For debug
// Boris: JE6mkuzSpT3ePciCPRTpuMT9fqPUVVLJz2618d33p7tn

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// Matograine portefeuille: 9p5nHsES6xujFR7pw2yGy4PLKKHgWsMvsDHaHF64Uj25.
// Lion simone: 78jhpprYkMNF6i5kQPXfkAVBpd2aqcpieNsXTSW4c21f
List parseHistory(txs, _pubkey) {
var transBC = [];
int i = 0;
final currentBase = 0;
double currentUD = 10.54;
for (final trans in txs) {
var direction = trans['direction'];
final transaction = trans['node'];
if (direction == "RECEIVED") {
for (String line in transaction['outputs']) {
if (line.contains(_pubkey)) {
output = line;
}
} else {
output = transaction['outputs'][0];
}
if (output == null) {
continue;
}
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transBC.add(i);
transBC[i] = [];
final dateBrut = DateTime.fromMillisecondsSinceEpoch(
transaction['writtenTime'] * 1000);
final DateFormat formatter = DateFormat('dd-MM-yy\nHH:mm');
final date = formatter.format(dateBrut);
transBC[i].add(transaction['writtenTime']);
transBC[i].add(date);
// print(
// "DEBUG date et comment: ${date.toString()} -- ${transaction['comment'].toString()}");
int amountBrut = int.parse(output.split(':')[0]);
final base = int.parse(output.split(':')[1]);
final int applyBase = base - currentBase;
final num amount =
removeDecimalZero(amountBrut * pow(10, applyBase) / 100);
num amountUD = amount / currentUD;
if (direction == "RECEIVED") {
transBC[i].add(transaction['issuers'][0]);
transBC[i].add(amount.toString());
transBC[i].add(amountUD.toStringAsFixed(2));
} else if (direction == "SENT") {
final outPubkey = output.split("SIG(")[1].replaceAll(')', '');
transBC[i].add(outPubkey);
transBC[i].add('- ' + amount.toString());
transBC[i].add(amountUD.toStringAsFixed(2));
}
transBC[i].add(transaction['comment']);
i++;
}
return transBC;
}
FetchMoreOptions checkQueryResult(result, opts, _pubkey) {
final List<dynamic> blockchainTX =
(result.data['txsHistoryBc']['both']['edges'] as List<dynamic>);
pageInfo = result.data['txsHistoryBc']['both']['pageInfo'];
print('hasPreviousPage: ' + pageInfo['hasPreviousPage'].toString());
print('hasNextPage: ' + pageInfo['hasNextPage'].toString());
if (fetchMoreCursor != null) {
opts = FetchMoreOptions(
variables: {'cursor': fetchMoreCursor},
updateQuery: (previousResultData, fetchMoreResultData) {
final List<dynamic> repos = [
...previousResultData['txsHistoryBc']['both']['edges']
as List<dynamic>,
...fetchMoreResultData['txsHistoryBc']['both']['edges']
as List<dynamic>
];
fetchMoreResultData['txsHistoryBc']['both']['edges'] = repos;
return fetchMoreResultData;
},
);
}
print(
"###### DEBUG H Parse blockchainTX list. Cursor: $fetchMoreCursor ######");
if (fetchMoreCursor != null) {
transBC = parseHistory(blockchainTX, _pubkey);
} else {
print("###### DEBUG H - Début de l'historique");
}
return opts;
}

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void snackNode(context) {
if (isFirstBuild) {
String _message;
if (endPointGVA == 'HS') {
_message =
"Aucun noeud Duniter disponible, veuillez réessayer ultérieurement";
} else {
_message = "Vous êtes connecté au noeud\n${endPointGVA.split('/')[2]}";
}
final snackBar =
SnackBar(content: Text(_message), duration: Duration(seconds: 2));
Scaffold.of(context).showSnackBar(snackBar);
isFirstBuild = false;
}
}
notifyListeners();
}
num removeDecimalZero(double n) {
String result = n.toStringAsFixed(n.truncateToDouble() == n ? 0 : 2);
snackCopyKey(context) {
final snackBar = SnackBar(
content:
Text("Cette clé publique a été copié dans votre presse-papier."),
duration: Duration(seconds: 2));
Scaffold.of(context).showSnackBar(snackBar);
}

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// num getBalance(_pubkey) {
// getBalance(_pubkey);
// }