// nac-daemon/src/contract.rs
// NAC 合约模块 - Charter 合约部署和调用

use serde::{Deserialize, Serialize};
use sha3::{Digest, Keccak256};

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ContractDeployRequest {
    pub source: String,
    pub deployer: String,
    pub init_args: Vec<String>,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ContractDeployResult {
    pub contract_address: String,
    pub tx_hash: String,
    pub bytecode_size: usize,
    pub gas_used: u64,
}

#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ContractCallRequest {
    pub contract_address: String,
    pub function_name: String,
    pub args: Vec<String>,
    pub caller: String,
}

/// 生成合约地址（基于部署者地址和 nonce）
pub fn generate_contract_address(deployer: &str, nonce: u64) -> String {
    let mut hasher = Keccak256::new();
    hasher.update(deployer.as_bytes());
    hasher.update(&nonce.to_le_bytes());
    let result = hasher.finalize();
    format!("NAC_CTR_{}", hex::encode(&result[..14]))
}