package uptime

import (
	"os"
	"strconv"
	"strings"

	"bugs.watch/agent/internal/aggregate"
)

type Collector struct{}

func New() *Collector {
	return &Collector{}
}

func (c *Collector) Name() string {
	return "uptime"
}

// Collect reads /proc/uptime and stores the latest uptime in seconds.
// Failure is silently ignored by design.
func (c *Collector) Collect(window *aggregate.Window) {
	data, err := os.ReadFile("/proc/uptime")
	if err != nil {
		return
	}

	// Format: "<uptime_seconds> <idle_seconds>"
	fields := strings.Fields(string(data))
	if len(fields) < 1 {
		return
	}

	seconds, err := strconv.ParseFloat(fields[0], 64)
	if err != nil {
		return
	}

	window.SetUptime(uint64(seconds))
}