package wifi

import (
	"log"
	"os/exec"
	"strings"
)

const (
	CMD_NMCLI = "/usr/bin/nmcli"
)

type wifi struct {
	essid    string
	password string
}

func New(essid string, password string) *wifi {
	w := wifi{
		essid:    essid,
		password: password,
	}
	return &w
}

func (w *wifi) ApplyConfig() {
	// Cleanup existing WiFi connections
	nmcliOut, err := exec.Command(CMD_NMCLI, "-t", "connection", "show").Output()
	if err != nil {
		log.Fatalf("Error running %s : %s", CMD_NMCLI, err)
	}
	connections := strings.Split(strings.Trim(string(nmcliOut), "\n"), "\n")
	for _, connection := range connections {
		details := strings.Split(connection, ":")
		if details[2] != "802-11-wireless" {
			continue
		}
		err := exec.Command(CMD_NMCLI, "connection", "del", details[1]).Run()
		if err != nil {
			log.Fatalf("Error running %s : %s", CMD_NMCLI, err)
		}
	}
	// Create new WiFi connection with network manager
	err = exec.Command(CMD_NMCLI, "d", "wifi", "connect", w.essid, "password", w.password).Run()
	if err != nil {
		log.Fatalf("Error running %s : %s", CMD_NMCLI, err)
	}
}