use std::time::{SystemTime, UNIX_EPOCH};

#[derive(Debug, Clone)]
pub struct NodeMetrics {
    pub block_height: u64,
    pub peer_count: u32,
    pub tx_pool_size: usize,
    pub sync_progress: f64,
    pub cpu_usage: f64,
    pub memory_usage: f64,
    pub disk_usage: f64,
    pub timestamp: u64,
}

impl NodeMetrics {
    pub fn collect() -> Self {
        let timestamp = SystemTime::now()
            .duration_since(UNIX_EPOCH)
            .unwrap()
            .as_secs();
        
        Self {
            block_height: 12345,
            peer_count: 42,
            tx_pool_size: 128,
            sync_progress: 99.9,
            cpu_usage: 25.5,
            memory_usage: 45.2,
            disk_usage: 60.1,
            timestamp,
        }
    }
    
    pub fn display(&self) {
        println!("📊 节点指标");
        println!("   区块高度: {}", self.block_height);
        println!("   连接节点: {}", self.peer_count);
        println!("   交易池: {}", self.tx_pool_size);
        println!("   同步进度: {:.1}%", self.sync_progress);
        println!("   CPU使用: {:.1}%", self.cpu_usage);
        println!("   内存使用: {:.1}%", self.memory_usage);
        println!("   磁盘使用: {:.1}%", self.disk_usage);
    }
}