local druid = require("druid.druid")


local function init_left_page(self)
	local prefab = gui.get_node("prefab")
	self.left_grid = self.druid:new_grid("page_parent", prefab, 1)
	self.left_grid:set_offset(vmath.vector3(0, 5, 0))

	for i = 1, 7 do
		local nodes = gui.clone_tree(prefab)
		gui.set_text(nodes["number"], i)
		self.left_grid:add(nodes["prefab"])
	end

	local size = self.left_grid:get_size()
	local view_size = gui.get_size(gui.get_node("page_parent"))

	self.left_scroll = self.druid:new_scroll("page_parent", "page_input",
		vmath.vector4(0, view_size.y/2, 0, -size.y - view_size.y/2))

	self.left_scroll:set_points(self.left_grid:get_all_pos())
end


local function log(self, index)
	print("Click on", index)
end


local function init_right_page(self)
	local prefab = gui.get_node("prefab")
	self.right_grid = self.druid:new_grid("right_parent", prefab, 1)
	self.right_grid:set_offset(vmath.vector3(0, 5, 0))

	for i = 1, 20 do
		local nodes = gui.clone_tree(prefab)
		gui.set_text(nodes["number"], i)
		self.druid:new_button(nodes["prefab"], log, i)
		self.right_grid:add(nodes["prefab"])
	end

	local size = self.right_grid:get_size()
	local view_size = gui.get_size(gui.get_node("right_parent"))

	-- TODO: Should we calc scrolle size with parent size?
	-- If yes, we will pass only content size to correct scrolling
	self.right_scroll = self.druid:new_scroll("right_parent", "right_input",
		vmath.vector4(0, 0, 0, -size.y - view_size.y))

	self.right_scroll:set_points(self.right_grid:get_all_pos())

	self.right_scroll:on_point_move(function(self, index, pos)
		print("Point to element:", index)
	end)
end


function init(self)
	self.druid = druid.new(self)

	-- -600 to 600 - left and right pos.x pages
	-- border is vmath.vector4(left_x, top_y, right_x, bot_y)
	self.main_scroll = self.druid:new_scroll("parent", "input_zone",
		vmath.vector4(-600, 0, 600, 0))

	self.main_scroll:set_points({
		vmath.vector3(600, 0, 0),
		vmath.vector3(0, 0, 0),
		vmath.vector3(-600, 0, 0),
	})
	-- Disable free inert and we only scroll via points, if exist
	self.main_scroll:set_inert(false)

	init_left_page(self)
	init_right_page(self)
end

function update(self, dt)
	self.druid:update(dt)
end

function on_input(self, action_id, action)
	self.druid:on_input(action_id, action)
end