// Command agent 是 host-metrics-collector 的 Agent 端入口：定时采集主机
// CPU/内存/磁盘/网络/进程指标与文件日志，经本地 WAL 断点续传，批量上报到
// Collector Gateway（默认 http://127.0.0.1:4318）。
package main

import (
	"context"
	"log"
	"os"
	"os/signal"
	"syscall"

	"git.opencomputing.cn/yumoqing/host-metrics-collector/internal/agent"
	"git.opencomputing.cn/yumoqing/host-metrics-collector/internal/config"
)

func main() {
	cfg := config.DefaultAgentConfig()
	log.Printf("[agent] starting host=%s version=%s gateway=%s", cfg.HostID, cfg.AgentVersion, cfg.GatewayURL)

	a, err := agent.New(cfg)
	if err != nil {
		log.Fatalf("[agent] init failed: %v", err)
	}
	defer func() {
		if err := a.Close(); err != nil {
			log.Printf("[agent] close: %v", err)
		}
	}()

	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt, syscall.SIGTERM)
	defer stop()

	if err := a.Run(ctx); err != nil {
		log.Printf("[agent] run: %v", err)
	}
	log.Printf("[agent] stopped")
}