package main

import (
	"context"
	"errors"
	"log/slog"
	"os"
	"os/signal"
	"time"

	"github.com/godbus/dbus/v5"
	"github.com/holoplot/go-evdev"
)

const Version = "v0.1.1"

func main() {
	// Setup logger
	h := slog.NewJSONHandler(os.Stdout, &slog.HandlerOptions{Level: slog.LevelInfo})
	logger := slog.New(h)
	slog.SetDefault(logger)

	// Setup signal handler
	ctx, stop := signal.NotifyContext(context.Background(), os.Interrupt)
	defer stop()

	// Connect to dbus
	conn, err := dbus.ConnectSessionBus()
	if err != nil {
		panic(err)
	}
	defer conn.Close()

	obj := conn.Object("net.sourceforge.mumble.mumble", "/")

	// Start reading input events
	input, err := evdev.OpenWithFlags("/dev/input/event1", os.O_RDONLY)
	if err != nil {
		panic(err)
	}
	defer input.Close()
	input.NonBlock()

	var done bool

	// Listen for context cancellation
	go func() {
		<-ctx.Done()
		done = true
		input.Close()
	}()

	var lastOn time.Time
	// Start listening for PTT key
	slog.Info("Starting event listener", "version", Version)
	for !done {
		ev, err := input.ReadOne()
		if err != nil {
			if errors.Is(err, os.ErrClosed) {
				continue
			}
			slog.Error("Error reading fron input device", "error", err)
			os.Exit(1)
		}
		if ev.Code == evdev.KEY_F24 && ev.Value == 1 {
			slog.Info("PTT ON")
			lastOn = time.Now()
			obj.Call("net.sourceforge.mumble.Mumble.startTalking", 0)
		}
		if ev.Code == evdev.KEY_F24 && ev.Value == 0 {
			speakDuration := time.Since(lastOn).String()
			slog.Info("PTT OFF", "duration", speakDuration)
			obj.Call("net.sourceforge.mumble.Mumble.stopTalking", 0)
		}
	}
	obj.Call("net.sourceforge.mumble.Mumble.stopTalking", 0)
	slog.Info("Exiting")
}