Merge pull request #581 from Concordium/SPO-34/init-contract-handler

initial attempt for initContract

Author: rbaconcordium

packages/sdk/CHANGELOG.md

@@ -6,6 +6,8 @@
 
 - deserialize function for DeployModulePayload implemented instead of throwing an exception of not supporting deserialize
 
+- deserialize function for InitContractPayload implemented instead of throwing an exception of not supporting deserialize
+
 ## 11.0.0
 
 ### Fixed

packages/sdk/src/accountTransactions.ts

@@ -40,6 +40,7 @@ import {
 import * as AccountAddress from './types/AccountAddress.js';
 import * as CcdAmount from './types/CcdAmount.js';
 import { DataBlob } from './types/DataBlob.js';
+import * as InitName from './types/InitName.js';
 import * as Parameter from './types/Parameter.js';
 import * as ReceiveName from './types/ReceiveName.js';
 
@@ -259,8 +260,26 @@ export class InitContractHandler implements AccountTransactionHandler<InitContra
         return Buffer.concat([serializedAmount, serializedModuleRef, serializedInitName, serializedParameters]);
     }
 
-    deserialize(): InitContractPayload {
-        throw new Error('deserialize not supported');
+    deserialize(serializePayload: Cursor): InitContractPayload {
+        const amount = serializePayload.read(8).readBigUInt64BE(0);
+        const moduleRef = serializePayload.read(32);
+
+        const initNameLength = serializePayload.read(2).readUInt16BE(0);
+        const initName = serializePayload.read(initNameLength);
+        const initNameAfterConversion = InitName.fromString(initName.toString('utf8'));
+
+        const paramLength = serializePayload.read(2).readUInt16BE(0);
+        const param = serializePayload.read(paramLength);
+        const paramBuffer = Parameter.fromBuffer(param.buffer);
+
+        return {
+            amount: CcdAmount.fromMicroCcd(amount),
+            moduleRef: ModuleReference.fromBuffer(moduleRef),
+            initName: ContractName.fromInitName(initNameAfterConversion),
+            param: paramBuffer,
+            //The execution energy cannot be recovered as it is not part of the payload serialization
+            maxContractExecutionEnergy: Energy.create(0n),
+        };
     }
 
     toJSON(payload: InitContractPayload): InitContractPayloadJSON {

packages/sdk/test/ci/deserialization.test.ts

@@ -9,8 +9,13 @@ import {
     CIS2,
     CcdAmount,
     ContractAddress,
+    ContractName,
     DataBlob,
     DeployModulePayload,
+    Energy,
+    InitContractPayload,
+    ModuleReference,
+    Parameter,
     RegisterDataPayload,
     SequenceNumber,
     SimpleTransferPayload,
@@ -89,6 +94,21 @@ test('test deserialize DeployModule ', () => {
     deserializeAccountTransactionBase(AccountTransactionType.DeployModule, payload);
 });
 
+test('test deserialize InitContract ', () => {
+    const moduleRef = ModuleReference.fromHexString('44434352ddba724930d6b1b09cd58bd1fba6ad9714cf519566d5fe72d80da0d1');
+    const contractName = ContractName.fromStringUnchecked('weather');
+
+    const deserializePayload: InitContractPayload = {
+        amount: CcdAmount.zero(),
+        moduleRef: moduleRef,
+        initName: contractName,
+        param: Parameter.fromHexString('0a'),
+        maxContractExecutionEnergy: Energy.create(0),
+    };
+
+    deserializeAccountTransactionBase(AccountTransactionType.InitContract, deserializePayload);
+});
+
 test('Expired transactions can be deserialized', () => {
     const payload: SimpleTransferPayload = {
         amount: CcdAmount.fromMicroCcd(5100000),