feat: support interacting with smart contracts on EVM-based blockchains

2025-05-09 19:04:38 +03:00
parent 2695b5f5f7
commit 619ce57776
8 changed files with 596 additions and 57 deletions
--- a/examples/hero_vault/contract_example.rhai
+++ b/examples/hero_vault/contract_example.rhai
@@ -0,0 +1,101 @@
+// 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);
+
+            // Note: In a full implementation, we would handle function arguments
+            // For now, we're just demonstrating the basic structure
+            print("Note: balanceOf function requires an address argument, which is not implemented in this example");
+            print("In a full implementation, we would pass the address and get the balance");
+        } else {
+            print("✗ Failed to load contract");
+        }
+    } else {
+        print("✗ Failed to create Ethereum wallet");
+    }
+} else {
+    print("✗ Failed to create key space");
+}
+
+print("\nContract example completed");