package main

import (
	"fmt"
	"log"
	"os"
	"path"

	"github.com/fsnotify/fsnotify"
)

func watchForConfigChanges() {
	watcher, err := fsnotify.NewWatcher()
	if err != nil {
		log.Fatal(err)
	}
	defer watcher.Close()

	done := make(chan bool)
	go func() {
		for {
			select {
			case event := <-watcher.Events:
				log.Println("event: ", event)
				if event.Op&fsnotify.Write == fsnotify.Write {
					log.Println("modified file:", event.Name)
				}
			case err := <-watcher.Errors:
				log.Println("error:", err)
			}
		}
	}()

	// The configuration file need to be in the same directory as the binary.
	// Later on, we can add other paths, where the file can be placed (like as a
	// dotfile in the home directory or in the .config/n3rdpad/ folder or other
	// places where windows will put it).
	config_path, err := os.Getwd()
	config_file := path.Join(config_path, "keymap.conf")

	err = watcher.Add(config_file)
	if err != nil {
		log.Fatal("Can't find the 'keymap.conf' configuration file. Please create one.")
	}
	<-done
}

func main() {
	fmt.Printf("Ready\n")
	watchForConfigChanges()
}