Create smart_contract.py

projects/PiNetAI/blockchain/smart_contract.py

@@ -0,0 +1,59 @@
+import os
+import json
+from typing import Dict, List
+from web3 import Web3
+
+class SmartContract:
+    def __init__(self, contract_address: str, contract_abi: List[Dict[str, str]]):
+        self.contract_address = contract_address
+        self.contract_abi = contract_abi
+        self.w3 = Web3(Web3.HTTPProvider("https://mainnet.infura.io/v3/YOUR_PROJECT_ID"))
+
+    def get_contract(self):
+        return self.w3.eth.contract(address=self.contract_address, abi=self.contract_abi)
+
+    def call_function(self, function_name: str, args: List[str]) -> str:
+        contract = self.get_contract()
+        function = contract.functions[function_name]
+        return function(*args).call()
+
+    def send_transaction(self, function_name: str, args: List[str], from_address: str, private_key: str) -> str:
+        contract = self.get_contract()
+        function = contract.functions[function_name]
+        tx = function(*args).buildTransaction({
+            "gas": 2000000,
+            "gasPrice": self.w3.toWei("20", "gwei"),
+            "from": from_address,
+            "nonce": self.w3.eth.getTransactionCount(from_address)
+        })
+        signed_tx = self.w3.eth.account.sign_transaction(tx, private_key)
+        return self.w3.eth.sendRawTransaction(signed_tx.rawTransaction).hex()
+
+    def get_event(self, event_name: str, from_block: int, to_block: int) -> List[Dict[str, str]]:
+        contract = self.get_contract()
+        event = contract.events[event_name]
+        return event.getLogs(fromBlock=from_block, toBlock=to_block)
+
+    def get_balance(self, address: str) -> int:
+        return self.w3.eth.get_balance(address)
+
+# Example usage:
+contract_address = "0x...ContractAddress..."
+contract_abi = json.loads("[{\"inputs\":[],\"name\":\"exampleFunction\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"}]")
+smart_contract = SmartContract(contract_address, contract_abi)
+
+# Call a function
+result = smart_contract.call_function("exampleFunction", ["arg1", "arg2"])
+print(result)
+
+# Send a transaction
+tx_hash = smart_contract.send_transaction("exampleFunction", ["arg1", "arg2"], "0x...FromAddress...", "0x...PrivateKey...")
+print(tx_hash)
+
+# Get an event
+events = smart_contract.get_event("exampleEvent", 100, 200)
+print(events)
+
+# Get balance
+balance = smart_contract.get_balance("0x...Address...")
+print(balance)