package main

import (
	"flag"
	"fmt"
	"time"

	"git.sr.ht/~jackmordaunt/go-toast"
)

func main() {
	var (
		runDeadlock bool
	)

	flag.BoolVar(&runDeadlock, "deadlock", false, "run the deadlocking function")
	flag.Parse()

	if runDeadlock {
		deadlock()
	} else {
		noDeadlock()
	}
}

func noDeadlock() {
	done := make(chan struct{})

	toast.SetActivationCallback(func(args string, data []toast.UserData) {
		fmt.Printf("args %q, data %v\n", args, data)
		done <- struct{}{}
	})

	n := toast.Notification{
		AppID:          "deadlock test",
		Title:          "testing deadlock",
		Body:           "deadlock occurs when waiting on Windows Runtime",
		ActivationType: toast.Foreground,
	}

	n.Push()
        
        // Useless goroutine tricks the Go runtime to avoid deadlock panic. 
	go func() {
		for range time.NewTicker(time.Second).C {

		}
	}()

	<-done
}

func deadlock() {
	done := make(chan struct{})

	toast.SetActivationCallback(func(args string, data []toast.UserData) {
		fmt.Printf("args %q, data %v\n", args, data)
		done <- struct{}{}
	})

	n := toast.Notification{
		AppID:          "deadlock test",
		Title:          "testing deadlock",
		Body:           "deadlock occurs when waiting on Windows Runtime",
		ActivationType: toast.Foreground,
	}

	n.Push()

	<-done
}