sal/examples/hero_vault/contract_example.rhai

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// Example Rhai script for interacting with smart contracts using Hero Vault
// This script demonstrates loading a contract ABI and interacting with a contract
// Step 1: Set up wallet and network
let space_name = "contract_demo_space";
let password = "secure_password123";
print("Creating key space: " + space_name);
if create_key_space(space_name, password) {
print("✓ Key space created successfully");
// Create a keypair
print("\nCreating keypair...");
if create_keypair("contract_key", password) {
print("✓ Created contract keypair");
}
// Step 2: Create an Ethereum wallet for Gnosis Chain
print("\nCreating Ethereum wallet...");
if create_ethereum_wallet() {
print("✓ Ethereum wallet created");
let address = get_ethereum_address();
print("Ethereum address: " + address);
// Step 3: Define a simple ERC-20 ABI (partial)
let erc20_abi = `[
{
"constant": true,
"inputs": [],
"name": "name",
"outputs": [{"name": "", "type": "string"}],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "symbol",
"outputs": [{"name": "", "type": "string"}],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [],
"name": "decimals",
"outputs": [{"name": "", "type": "uint8"}],
"payable": false,
"stateMutability": "view",
"type": "function"
},
{
"constant": true,
"inputs": [{"name": "owner", "type": "address"}],
"name": "balanceOf",
"outputs": [{"name": "", "type": "uint256"}],
"payable": false,
"stateMutability": "view",
"type": "function"
}
]`;
// Step 4: Load the contract ABI
print("\nLoading contract ABI...");
let contract = load_contract_abi("Gnosis", "0x4ECaBa5870353805a9F068101A40E0f32ed605C6", erc20_abi);
if contract != "" {
print("✓ Contract loaded successfully");
// Step 5: Call read-only functions
print("\nCalling read-only functions...");
// Get token name
let token_name = call_contract_read(contract, "name");
print("Token name: " + token_name);
// Get token symbol
let token_symbol = call_contract_read(contract, "symbol");
print("Token symbol: " + token_symbol);
// Get token decimals
let token_decimals = call_contract_read(contract, "decimals");
print("Token decimals: " + token_decimals);
// For now, we're just demonstrating the basic structure
} else {
print("✗ Failed to load contract");
}
} else {
print("✗ Failed to create Ethereum wallet");
}
} else {
print("✗ Failed to create key space");
}
print("\nContract example completed");