package main

import (
	"flag"
	"fmt"
	"math/rand"
	"os"
	"os/signal"
	"syscall"

	"github.com/go-vgo/robotgo"
)

const helpText = "A simple command line tool for automatically calling in strategems in HellDivers 2"
const exampleText = "Example for Expendable Anti-Tank: autostrat.exe -combo=ssawd -cooldown=70"

func main() {
	combo := flag.String("combo", "", "The direction combination of keys needed to call in a statagem (wsad not arrows or directions)")
	cooldown := flag.Int("cooldown", 0, "The cooldown of the statagem in seconds")
	help := flag.Bool("help", false, "Prints this message")

	flag.Parse()
	if *help {
		fmt.Println(helpText)
		fmt.Println(exampleText)
		flag.PrintDefaults()
	} else {

		if *combo == "" {
			fmt.Println("Error: combo flag cannot be empty")
			fmt.Println(exampleText)
			flag.PrintDefaults()
			return
		}

		if *cooldown == 0 {
			fmt.Println("Error: cooldown flag cannot be empty")
			fmt.Println(exampleText)
			flag.PrintDefaults()
			return
		}

		go AutoCallStratagems(*combo, *cooldown*1000+1000)

		done := make(chan os.Signal, 1)
		signal.Notify(done, syscall.SIGINT, syscall.SIGTERM)
		fmt.Println("Blocking, press ctrl+c to continue...")
		<-done
	}
}

func AutoCallStratagems(combo string, cooldown int) {
	exit := false

	const min = 3
	const max = 14

	//Wait for exit signal or loop forever
	for !exit {
		//Toggle start modifier
		robotgo.KeyToggle("ctrl", "down")
		robotgo.MilliSleep(rand.Intn(max-min) + min)
		for _, key := range combo {
			robotgo.KeyTap(string(key))
			robotgo.MilliSleep(rand.Intn(max-min) + min)
		}
		fmt.Println("Calling down another stratagem for freedom!")
		robotgo.KeyToggle("ctrl", "up")
		robotgo.MilliSleep(cooldown)
	}
}