package hotspot

import (
	"fmt"
	"os"
	"os/exec"

	"github.com/nemunaire/repeater/internal/models"
)

const (
	AP_INTERFACE = "wlan1"
	HOSTAPD_CONF = "/etc/hostapd/hostapd.conf"
)

// Configure updates the hotspot configuration
func Configure(config models.HotspotConfig) error {
	hostapdConfig := fmt.Sprintf(`interface=%s
driver=nl80211
ssid=%s
hw_mode=g
channel=%d
wmm_enabled=0
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=%s
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
`, AP_INTERFACE, config.SSID, config.Channel, config.Password)

	return os.WriteFile(HOSTAPD_CONF, []byte(hostapdConfig), 0644)
}

// Start starts the hotspot
func Start() error {
	cmd := exec.Command("systemctl", "start", "hostapd")
	return cmd.Run()
}

// Stop stops the hotspot
func Stop() error {
	cmd := exec.Command("systemctl", "stop", "hostapd")
	return cmd.Run()
}