add getting gold in bank

src/artifacts.zig

@@ -461,7 +461,6 @@ pub const GoldTransactionResult = struct {
     pub fn parseDepositError(status: std.http.Status) ?BankDepositGoldError {
         return switch (@intFromEnum(status)) {
             461 => BankDepositGoldError.BankIsBusy,
-            478 => BankDepositGoldError.NotEnoughGold, // TODO: This should maybe be removed
             486 => BankDepositGoldError.CharacterIsBusy,
             492 => BankDepositGoldError.NotEnoughGold,
             498 => BankDepositGoldError.CharacterNotFound,
@@ -482,10 +481,6 @@ pub const GoldTransactionResult = struct {
             else => null
         };
     }
-
-    pub fn deinit(self: GoldTransactionResult) void {
-        _ = self;
-    }
 };
 
 pub const ItemTransactionResult = struct {
@@ -1071,6 +1066,22 @@ pub fn actionEquip(
     );
 }
 
+pub fn getBankGold(self: *ArtifactsAPI) APIError!u64 {
+    const result = try self.fetch(.{ .method = .GET, .path = "/my/bank/gold" });
+    defer result.deinit();
+
+    if (result.status != .ok) {
+        return APIError.RequestFailed;
+    }
+    if (result.body == null) {
+        return APIError.ParseFailed;
+    }
+
+    const data = json_utils.asObject(result.body.?) orelse return APIError.RequestFailed;
+    const quantity = json_utils.getInteger(data, "quantity") orelse return APIError.ParseFailed;
+    return @intCast(quantity);
+}
+
 test "parse date time" {
     try std.testing.expectEqual(1723069394.105, parseDateTime("2024-08-07T22:23:14.105Z").?);
 }