use serde::{Serialize, Deserialize};
use std::time::{SystemTime, UNIX_EPOCH};
use crate::error::CliError;

#[derive(Serialize, Deserialize)]
pub struct AuditLog {
    pub timestamp: u64,
    pub operator: String,
    pub operation: String,
    pub input_hash: String,
    pub output_hash: String,
    pub toolbox_version: String,
    pub signature: String,
}

pub fn log_operation(operation: &str, input: &[u8], output: &[u8]) -> Result<(), CliError> {
    let log = AuditLog {
        timestamp: SystemTime::now().duration_since(UNIX_EPOCH)
            .map_err(|e| CliError::Other(e.to_string()))?.as_secs(),
        operator: "0x1234...".to_string(), // 模拟
        operation: operation.to_string(),
        input_hash: format!("0x{:x}", md5::compute(input)),
        output_hash: format!("0x{:x}", md5::compute(output)),
        toolbox_version: "2.0.0".to_string(),
        signature: "0xabcd...".to_string(), // 模拟
    };
    
    // 写入审计日志
    let log_json = serde_json::to_string_pretty(&log)
        .map_err(|e| CliError::Other(e.to_string()))?;
    
    println!("📝 审计日志已记录:");
    println!("{}", log_json);
    
    Ok(())
}