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added 500 ms delay after kind 1 send

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added ln to qr code but did not use it.
commented out re-broadcast section.
This commit is contained in:
Vishal
2022-12-22 18:42:54 +05:30
parent b883231223
commit 922377a4e4
4 changed files with 90 additions and 16 deletions
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54
lib/utils.dart
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@@ -250,16 +250,62 @@ int isInRange( int n, List<List<int>> ranges ) {
return 0;
}
String getQrCodeAsString(String str) {
List<int> getTypeAndModule(String str) {
int type = 14, module = 73;
if( str.length > 3688 /~ 8) {
type = 16;
module = 81;
}
if( str.length > 4712 /~ 8) {
type = 18;
module = 89;
}
return [type, module];
}
int gMaxStrLenForQrCode = 600; // in bytes, maximum acceptable length of string that is converted to qr code. for lnbc1 invoices
String expandLNInvoices(String content) {
String regexp1 = '(lnbc1[a-zA-Z0-9]+)';
RegExp httpRegExp = RegExp(regexp1);
for( var match in httpRegExp.allMatches(content) ) {
String lnInvoice = content.substring(match.start, match.end);
if( lnInvoice.length > gMaxStrLenForQrCode) {
continue;
}
//print(lnInvoice);
String qrStr = "";
List<int> typeAndModule = getTypeAndModule(lnInvoice);
//print(typeAndModule);
qrStr = getPubkeyAsQrString(lnInvoice, typeAndModule[0], typeAndModule[1], "");
//print(qrStr);
content = content.substring(0, match.start) + "\n\n" + qrStr + "\n\n" + content.substring(match.end);
}
return content;
}
// https://www.sproutqr.com/blog/qr-code-types
// default 4 and 33 work for pubkey
String getPubkeyAsQrString(String str, [int typeNumber = 4, moduleCount = 33, String leftPadding = " "]) {
String output = "";
final qrCode = QrCode(4, QrErrorCorrectLevel.L)
final qrCode = QrCode(typeNumber, QrErrorCorrectLevel.L)
..addData('$str');
final qrImage = QrImage(qrCode);
assert( qrImage.moduleCount == 33);
assert( qrImage.moduleCount == moduleCount);
//print("qrimage modulecount = ${qrImage.moduleCount}");
String leftPadding = " ";
var x = 0;
for (x = 0; x < qrImage.moduleCount -1 ; x += 2) {
output += leftPadding;