package api

import (
	"cwtch.im/tapir"
	"cwtch.im/tapir/applications"
	"encoding/json"
	"github.com/therecipe/qt/core"
	"github.com/therecipe/qt/qml"
	"sync"
)

type GardenAPI struct {
	applications.AuthApp
	connection tapir.Connection
	core.QObject
	lock sync.Mutex

	QMLEngine  *qml.QQmlApplicationEngine
	Translator *core.QTranslator

	_ func(x int, y int) `signal:"DrawEvent"`

	_ func(x int, y int) `signal:"newDrawEvent,auto"`
}

func (ea *GardenAPI) newDrawEvent(x int, y int) {
	event := new(UpdateEvent)
	event.X = x
	event.Y = y
	data, _ := json.Marshal(event)
	ea.lock.Lock()
	defer ea.lock.Unlock()
	ea.connection.Send(data)
}

// NewInstance should always return a new instantiation of the application.
func (ea *GardenAPI) NewInstance() tapir.Application {
	return ea
}

// Init is run when the connection is first started.
func (ea *GardenAPI) Init(connection tapir.Connection) {
	// First run the Authentication App
	ea.AuthApp.Init(connection)

	if connection.HasCapability(applications.AuthCapability) {
		// The code for out simple application (We just send and receive "Hello"
		ea.connection = connection
		go ea.listen()
	}
}

type UpdateEvent struct {
	X int
	Y int
}

func (ea *GardenAPI) listen() {
	for {
		data := ea.connection.Expect()
		event := new(UpdateEvent)
		json.Unmarshal(data, event)
		ea.DrawEvent(event.X, event.Y)
	}
}