From 3ab605c065d8b47c1baab0b4859f596e7422810c Mon Sep 17 00:00:00 2001
From: julian <julian@cypherstack.com>
Date: Fri, 24 Mar 2023 15:30:29 -0600
Subject: [PATCH] amount serialization

---
 lib/utilities/amount.dart | 39 ++++++++++++++++++++++++++++++++++++++-
 1 file changed, 38 insertions(+), 1 deletion(-)

diff --git a/lib/utilities/amount.dart b/lib/utilities/amount.dart
index 6955e2489..74d37b6b5 100644
--- a/lib/utilities/amount.dart
+++ b/lib/utilities/amount.dart
@@ -1,8 +1,11 @@
+import 'dart:convert';
+
 import 'package:decimal/decimal.dart';
+import 'package:equatable/equatable.dart';
 
 final _ten = BigInt.from(10);
 
-class Amount {
+class Amount implements Equatable {
   Amount({
     required BigInt rawValue,
     required this.fractionDigits,
@@ -40,4 +43,38 @@ class Amount {
   /// convenience getter
   @Deprecated("provided for convenience only. Use fractionDigits instead.")
   int get decimals => fractionDigits;
+
+  Map<String, dynamic> toMap() {
+    // ===========================================================================
+    // ======= Serialization =====================================================
+
+    return {"raw": raw.toString(), "fractionDigits": fractionDigits};
+  }
+
+  String toJsonString() {
+    return jsonEncode(toMap());
+  }
+
+  // ===========================================================================
+  // ======= Deserialization ===================================================
+
+  static Amount fromSerializedJsonString(String json) {
+    final map = jsonDecode(json) as Map;
+    return Amount(
+      rawValue: BigInt.parse(map["raw"] as String),
+      fractionDigits: map["fractionDigits"] as int,
+    );
+  }
+
+  // ===========================================================================
+  // ======= Overrides =========================================================
+
+  @override
+  String toString() => "Amount($raw, $fractionDigits)";
+
+  @override
+  List<Object?> get props => [fractionDigits, _value];
+
+  @override
+  bool? get stringify => false;
 }