ABI Interaction Support for Python SDK (#247)

* Start ABI JSON interaction

* Add static annoation

* Fix Method argument parsing

* Add ABI Typing to Method arguments

* [WIP] Add AtomicTransactionComposer build functions

* [WIP] Sign and send atomic transaction groups

* Add unit tests for object parsing

* Clean up method calls

* Address PR comments on JSON objects

* Refactor ABI Type to ABIType so it can be exposed to outside world

* Add cucumber steps for ABI tests and update existing implementation so it can pass these tests

* Refactor TransactionSigner to Abstract class and merge signatures when signing

* Update testing to reflect json unit tests and composer tests

* Formatting and docstring fixes

* Clean up imports

* Fix unit test for appId

* Refactor some names and add txn as an arg type

* Partially address PR comments

* Add some additional checks for safety

* Fix a step so we check for empty string instead of None

* MInclude returns tests and check for a valid returns from a ABI call

* Addressing PR comments about type hints and returning self

* Ensure group ids are zero when adding transactions

Makefile

@@ -1,8 +1,8 @@
 unit:
-	behave --tags="@unit.offline or @unit.algod or @unit.indexer or @unit.rekey or @unit.tealsign or @unit.dryrun or @unit.applications or @unit.responses or @unit.transactions or @unit.responses.231 or @unit.feetest or @unit.indexer.logs" test -f progress2
+	behave --tags="@unit.offline or @unit.algod or @unit.indexer or @unit.rekey or @unit.tealsign or @unit.dryrun or @unit.applications or @unit.responses or @unit.transactions or @unit.transactions.payment or @unit.responses.231 or @unit.feetest or @unit.indexer.logs or @unit.abijson or @unit.atomic_transaction_composer" test -f progress2
 
 integration:
-	behave --tags="@algod or @assets or @auction or @kmd or @send or @template or @indexer or @indexer.applications or @rekey or @compile or @dryrun or @dryrun.testing or @applications or @applications.verified or @indexer.231" test -f progress2
+	behave --tags="@algod or @assets or @auction or @kmd or @send or @template or @indexer or @indexer.applications or @rekey or @compile or @dryrun or @dryrun.testing or @applications or @applications.verified or @indexer.231 or @abi" test -f progress2
 
 docker-test:
 	./run_integration.sh

algosdk/abi/__init__.py

@@ -1,12 +1,16 @@
 from .util import type_from_string
 from .uint_type import UintType
 from .ufixed_type import UfixedType
+from .base_type import ABIType
 from .bool_type import BoolType
 from .byte_type import ByteType
 from .address_type import AddressType
 from .string_type import StringType
 from .array_dynamic_type import ArrayDynamicType
 from .array_static_type import ArrayStaticType
 from .tuple_type import TupleType
+from .method import Method, Argument, Returns
+from .interface import Interface
+from .contract import Contract
 
 name = "abi"

algosdk/abi/address_type.py

@@ -1,12 +1,12 @@
-from .base_type import Type
+from .base_type import ABIType
 from .byte_type import ByteType
 from .tuple_type import TupleType
 from .. import error
 
 from algosdk import encoding
 
 
-class AddressType(Type):
+class AddressType(ABIType):
     """
     Represents an Address ABI Type for encoding.
     """

algosdk/abi/array_dynamic_type.py

@@ -1,10 +1,10 @@
-from .base_type import ABI_LENGTH_SIZE, Type
+from .base_type import ABI_LENGTH_SIZE, ABIType
 from .byte_type import ByteType
 from .tuple_type import TupleType
 from .. import error
 
 
-class ArrayDynamicType(Type):
+class ArrayDynamicType(ABIType):
     """
     Represents a ArrayDynamic ABI Type for encoding.
 

algosdk/abi/array_static_type.py

@@ -1,13 +1,13 @@
 import math
 
-from .base_type import Type
+from .base_type import ABIType
 from .bool_type import BoolType
 from .byte_type import ByteType
 from .tuple_type import TupleType
 from .. import error
 
 
-class ArrayStaticType(Type):
+class ArrayStaticType(ABIType):
     """
     Represents a ArrayStatic ABI Type for encoding.
 

algosdk/abi/base_type.py

@@ -1,11 +1,10 @@
 from abc import ABC, abstractmethod
-from enum import IntEnum
 
 # Globals
 ABI_LENGTH_SIZE = 2  # We use 2 bytes to encode the length of a dynamic element
 
 
-class Type(ABC):
+class ABIType(ABC):
     """
     Represents an ABI Type for encoding.
     """
@@ -45,7 +44,7 @@ def encode(self, value):
         pass
 
     @abstractmethod
-    def decode(self, value_string):
+    def decode(self, bytestring):
         """
         Deserialize the ABI type and value from a byte string using ABI encoding rules.
         """

algosdk/abi/bool_type.py

@@ -1,8 +1,8 @@
-from .base_type import Type
+from .base_type import ABIType
 from .. import error
 
 
-class BoolType(Type):
+class BoolType(ABIType):
     """
     Represents a Bool ABI Type for encoding.
     """

algosdk/abi/byte_type.py

@@ -1,8 +1,8 @@
-from .base_type import Type
+from .base_type import ABIType
 from .. import error
 
 
-class ByteType(Type):
+class ByteType(ABIType):
     """
     Represents a Byte ABI Type for encoding.
     """

algosdk/abi/contract.py

@@ -0,0 +1,47 @@
+import json
+
+from algosdk.abi.method import Method
+
+
+class Contract:
+    """
+    Represents a ABI contract description.
+
+    Args:
+        name (string): name of the contract
+        app_id (int): application id associated with the contract
+        methods (list): list of Method objects
+    """
+
+    def __init__(self, name, app_id, methods) -> None:
+        self.name = name
+        self.app_id = int(app_id)
+        self.methods = methods
+
+    def __eq__(self, o) -> bool:
+        if not isinstance(o, Contract):
+            return False
+        return (
+            self.name == o.name
+            and self.app_id == o.app_id
+            and self.methods == o.methods
+        )
+
+    @staticmethod
+    def from_json(resp):
+        d = json.loads(resp)
+        return Contract.undictify(d)
+
+    def dictify(self):
+        d = {}
+        d["name"] = self.name
+        d["appId"] = self.app_id
+        d["methods"] = [m.dictify() for m in self.methods]
+        return d
+
+    @staticmethod
+    def undictify(d):
+        name = d["name"]
+        app_id = d["appId"]
+        method_list = [Method.undictify(method) for method in d["methods"]]
+        return Contract(name=name, app_id=app_id, methods=method_list)

algosdk/abi/interface.py

@@ -0,0 +1,39 @@
+import json
+
+from algosdk.abi.method import Method
+
+
+class Interface:
+    """
+    Represents a ABI interface description.
+
+    Args:
+        name (string): name of the interface
+        methods (list): list of Method objects
+    """
+
+    def __init__(self, name, methods):
+        self.name = name
+        self.methods = methods
+
+    def __eq__(self, o):
+        if not isinstance(o, Interface):
+            return False
+        return self.name == o.name and self.methods == o.methods
+
+    @staticmethod
+    def from_json(resp):
+        d = json.loads(resp)
+        return Interface.undictify(d)
+
+    def dictify(self):
+        d = {}
+        d["name"] = self.name
+        d["methods"] = [m.dictify() for m in self.methods]
+        return d
+
+    @staticmethod
+    def undictify(d):
+        name = d["name"]
+        method_list = [Method.undictify(method) for method in d["methods"]]
+        return Interface(name=name, methods=method_list)