feat: using AlgoKit Core to build a payment transaction

Author: CiottiGiorgio

poetry.lock

@@ -11,7 +11,7 @@ python = "^3.10"
 py-algorand-sdk = "^2.4.0"
 httpx = ">=0.23.1,<=0.28.1"
 typing-extensions = ">=4.6.0"
-algokit-transact = {path = "../../RustroverProjects/algokit-core/packages/python/algokit_transact/dist/algokit_transact-0.1.0.tar.gz"}
+algokit-transact = {path = "../../RustroverProjects/algokit-core/target/wheels/algokit_transact-0.1.0-py3-none-manylinux_2_34_x86_64.whl"}
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8"

pyproject.toml

@@ -0,0 +1,46 @@
+import base64
+
+import algokit_transact
+import algosdk.transaction
+
+
+def payment_through_core(
+    sender,
+    sp,
+    receiver,
+    amt,
+    close_remainder_to=None,
+    note=None,
+    lease=None,
+    rekey_to=None,
+) -> algosdk.transaction.PaymentTxn:
+    txn = algokit_transact.Transaction(
+        transaction_type=algokit_transact.TransactionType.PAYMENT,
+        sender=algokit_transact.address_from_string(sender),
+        # The correct fee will be calculated later based on suggested params and estimated size of the transaction.
+        fee=sp.fee,
+        first_valid=sp.first,
+        last_valid=sp.last,
+        genesis_hash=base64.b64decode(sp.gh),
+        genesis_id=sp.gen,
+        note=note,
+        lease=lease,
+        rekey_to=algokit_transact.address_from_string(rekey_to) if rekey_to else None,
+        payment=algokit_transact.PaymentTransactionFields(
+            receiver=algokit_transact.address_from_string(receiver),
+            amount=amt,
+            close_remainder_to=algokit_transact.address_from_string(close_remainder_to) if close_remainder_to else None,
+        ),
+    )
+
+    size = algokit_transact.estimate_transaction_size(txn)
+    final_fee: int
+    if sp.flat_fee:
+        final_fee = sp.fee
+    else:
+        final_fee = max(algosdk.constants.MIN_TXN_FEE, sp.flat_fee * size)
+    txn.fee = final_fee
+
+    return algosdk.encoding.msgpack_decode(
+        base64.b64encode(algokit_transact.encode_transaction_raw(txn)).decode("utf-8")
+    )

src/algokit_utils/transactions/algokit_core_bridge.py

@@ -29,6 +29,7 @@
 from algokit_utils.models.state import BoxIdentifier, BoxReference
 from algokit_utils.models.transaction import SendParams, TransactionWrapper
 from algokit_utils.protocols.account import TransactionSignerAccountProtocol
+from algokit_utils.transactions.algokit_core_bridge import payment_through_core
 
 if TYPE_CHECKING:
     from collections.abc import Callable
@@ -2251,7 +2252,7 @@ def _build_payment(
             "close_remainder_to": params.close_remainder_to,
         }
 
-        return self._common_txn_build_step(lambda x: algosdk.transaction.PaymentTxn(**x), params, txn_params)
+        return self._common_txn_build_step(lambda x: payment_through_core(**x), params, txn_params)
 
     def _build_asset_create(
         self, params: AssetCreateParams, suggested_params: algosdk.transaction.SuggestedParams