add balance to accounts

close #11

src/data_handler.ts

@@ -94,6 +94,20 @@ export class DataHandler {
       ctx.log.info(
         `New transaction: ${transfer.from} to ${transfer.to} of ${transfer.amount} tokens`
       );
+      // should never fail because source of transfer must be an existing account
+      const fromAccount = await this.getAccountByAddressOrFail(ctx, transfer.from);
+      // shoud never fail because destination of transfer must be existing account or raise System.NewAccount
+      const toAccount = await this.getAccountByAddressOrFail(ctx, transfer.to);
+      const newTransfer = new Transfer({
+        id: transfer.id,
+        blockNumber: transfer.blockNumber,
+        timestamp: transfer.timestamp,
+        from: fromAccount,
+        to: toAccount,
+        amount: transfer.amount,
+      });
+      this.data.transfers.set(transfer.id, newTransfer);
+
       // Update balances
       await this.updateAccountBalance(ctx, transfer.from, -transfer.amount);
       await this.updateAccountBalance(ctx, transfer.to, transfer.amount);