Merge pull request #1157 from cypherstack/mweb

Initial Mweb

Author: rehrar

docs/building.md

@@ -7,6 +7,7 @@ Here you will find instructions on how to install the necessary tools for buildi
 - The only OS supported for building Android and Linux desktop is Ubuntu 20.04.  Windows builds require using Ubuntu 20.04 on WSL2.  macOS builds for itself and iOS.  Advanced users may also be able to build on other Debian-based distributions like Linux Mint.
 - Android setup ([Android Studio](https://developer.android.com/studio) and subsequent dependencies)
 - 100 GB of storage
+- Install go: [https://go.dev/doc/install](https://go.dev/doc/install)
 
 ## Linux host
 
@@ -163,6 +164,8 @@ cd scripts/windows
 ./deps.sh
 ```
 
+install go in WSL [https://go.dev/doc/install](https://go.dev/doc/install) (follow linux instructions) and ensure you have `x86_64-w64-mingw32-gcc` 
+
 and use `scripts/build_app.sh` to build plugins:
 ```
 cd ..

lib/db/drift/database.dart

@@ -9,6 +9,7 @@
  */
 
 import 'dart:async';
+import 'dart:math' as math;
 
 import 'package:drift/drift.dart';
 import 'package:drift_flutter/drift_flutter.dart';
@@ -44,13 +45,56 @@ class SparkNames extends Table {
   Set<Column> get primaryKey => {name};
 }
 
-@DriftDatabase(tables: [SparkNames])
+class MwebUtxos extends Table {
+  TextColumn get outputId => text()();
+  TextColumn get address => text()();
+  IntColumn get value => integer()();
+  IntColumn get height => integer()();
+  IntColumn get blockTime => integer()();
+  BoolColumn get blocked => boolean()();
+  BoolColumn get used => boolean()();
+
+  @override
+  Set<Column> get primaryKey => {outputId};
+}
+
+extension MwebUtxoExt on MwebUtxo {
+  int getConfirmations(int currentChainHeight) {
+    if (blockTime <= 0) return 0;
+    if (height <= 0) return 0;
+    return math.max(0, currentChainHeight - (height - 1));
+  }
+
+  bool isConfirmed(
+    int currentChainHeight,
+    int minimumConfirms, {
+    int? overrideMinConfirms,
+  }) {
+    final confirmations = getConfirmations(currentChainHeight);
+
+    if (overrideMinConfirms != null) {
+      return confirmations >= overrideMinConfirms;
+    }
+    return confirmations >= minimumConfirms;
+  }
+}
+
+@DriftDatabase(tables: [SparkNames, MwebUtxos])
 final class WalletDatabase extends _$WalletDatabase {
   WalletDatabase._(String walletId, [QueryExecutor? executor])
     : super(executor ?? _openConnection(walletId));
 
   @override
-  int get schemaVersion => 1;
+  int get schemaVersion => 2;
+
+  @override
+  MigrationStrategy get migration => MigrationStrategy(
+    onUpgrade: (m, from, to) async {
+      if (from == 1 && to == 2) {
+        await m.createTable(mwebUtxos);
+      }
+    },
+  );
 
   static QueryExecutor _openConnection(String walletId) {
     return driftDatabase(