local monarch

go.property("screen_proxy", msg.url("#collectionproxy"))
go.property("screen_id", hash("UNIQUE ID HERE"))
go.property("popup", false)
go.property("popup_on_popup", false)
go.property("timestep_below_popup", 1)
go.property("transition_url", msg.url())
go.property("focus_url", msg.url())
go.property("receiver_url", msg.url())
go.property("preload", false)


function init(self)
	monarch = require "monarch.monarch"
	local url = msg.url()
	assert(not self.popup_on_popup or (self.popup_on_popup and self.popup), "Popup on Popups can only be set if the Popup flag is set")
	assert(self.screen_proxy ~= url, "You must specify either a proxy URL")
	assert(self.timestep_below_popup >= 0, "Timestep must be positive")
	
	local settings = {
		popup = self.popup,
		popup_on_popup = self.popup_on_popup,
		transition_url = self.transition_url ~= url and self.transition_url or nil,
		focus_url = self.focus_url ~= url and self.focus_url or nil,
		receiver_url = self.receiver_url ~= url and self.receiver_url or nil,
		timestep_below_popup = self.timestep_below_popup,
		auto_preload = self.preload,
	}

	monarch.register_proxy(self.screen_id, self.screen_proxy, settings)
end

function final(self)
	monarch.unregister(self.screen_id)
end

function on_message(self, message_id, message, sender)
	if message_id == hash("show") then
		monarch.show(self.screen_id, { clear = message.clear })
	elseif message_id == hash("hide") then
		monarch.back()
	elseif message_id == hash("back") then
		monarch.back()
	else
		monarch.on_message(message_id, message, sender)
	end
end