deploy.py

from web3 import Web3
import json
import time

try:
    # 1. Connect to Ganache
    w3 = Web3(Web3.HTTPProvider('http://127.0.0.1:7545'))
    assert w3.is_connected(), "Failed to connect to Ganache"
    
    # 2. Set deployer account (first Ganache account)
    w3.eth.default_account = w3.eth.accounts[0]
    print(f"Deployer: {w3.eth.default_account}")

    # 3. Load contract artifacts
    with open('blockchain/contract_abi.json') as f:
        abi = json.load(f)
    
    with open('blockchain/crypto_identifier.bin', 'r') as f:
        bytecode = f.read().strip()  # Remove any newlines
    
    # 4. Deploy with sufficient gas
    contract = w3.eth.contract(abi=abi, bytecode=bytecode)
    tx_hash = contract.constructor().transact({
        'gas': 3000000,
        'from': w3.eth.default_account
    })
    
    # 5. Wait for receipt (up to 2 minutes)
    start_time = time.time()
    while time.time() - start_time < 120:
        try:
            tx_receipt = w3.eth.get_transaction_receipt(tx_hash)
            if tx_receipt is not None:
                break
        except:
            pass
        time.sleep(2)
    
    if not tx_receipt:
        raise TimeoutError("Deployment timed out after 2 minutes")
    
    print(f"Contract deployed at: {tx_receipt.contractAddress}")
    print(f"Block: {tx_receipt.blockNumber}")
    print(f"Gas used: {tx_receipt.gasUsed}")

except Exception as e:
    print(f"Error: {type(e).__name__}: {str(e)}")
    if 'tx_hash' in locals():
        print(f"Transaction hash: {tx_hash.hex()}")
        print(f"Check Ganache GUI for details")