// $KyokoNet: antifetch, v 0.1.6 2022/11/15 08:54:00 akoizumi Exp $
//
// Get current system information like neofetch(1) without fancy things.
// It mostly uses the standard library, and an extra dependency.
package main

import (
	"fmt"
	"os"
	"log"
	"runtime"
	"github.com/shirou/gopsutil/v3/host"
	"github.com/shirou/gopsutil/v3/mem"
)

func main() {
	hostname, err := os.Hostname()
	uptime, _ := host.Uptime()
	v, _ := mem.VirtualMemory()

	days := uptime / (60 * 60 * 24)
	hours := (uptime - (days * 60 * 60 * 24)) / (60 * 60)
	minutes := ((uptime - (days * 60 * 60 * 24))  -  (hours * 60 * 60)) / 60
	
	if err != nil {
		log.Fatal(err)
	}

	fmt.Printf("%s @ %s\n", os.Getenv("USER"), hostname)
	fmt.Printf("\n")
	fmt.Printf("Editor:\t%s\n", os.Getenv("EDITOR"))
	fmt.Printf("System:\t%s\n", runtime.GOOS)
	fmt.Printf("Architecture:\t%s\n", runtime.GOARCH)
	fmt.Printf("RAM:\t%v/%v (%f%%)\n", v.Total, v.Free, v.UsedPercent)
	fmt.Printf("Shell:\t%s\n", os.Getenv("SHELL"))
	fmt.Printf("Uptime:\t%dd:%dh:%dm\n", days, hours, minutes)
}