local GuiScreen = Object:extend()
local ElementList = require "birb.modules.gui.mixins.elements"
local ScreenList = require "birb.modules.gui.mixins.screens"
GuiScreen:implement(ScreenList)
GuiScreen:implement(ElementList)

local TweenManager = require "birb.classes.time"

function GuiScreen:new(name, controller)
    self.controller = controller or self:getGui()
    self.name = name
    self.isVisible = false
    self.transforms = {}
    self.tweens = TweenManager(self)

    self:reset()
    self:registerElements()
    self.controller:addScreen(name, self)
end

function GuiScreen:update(dt)
    self.tweens:update(dt)
    for _, screen in pairs(self.screens) do
        if (screen ~= nil) then
            screen:update(dt)
        end
    end
end

function GuiScreen:show()
    if (not self.isVisible) then
        self.isVisible = true
        if (self.transforms["show"] ~= nil) then
            self:playTransform("show")
        end
    end
end

function GuiScreen:hide()
    if (self.isVisible) then
        if (self.transforms["hide"] ~= nil) then
            local time = self:playTransform("hide")
            print(time)
            self.tweens:newFunc(time, "hide", function ()
                self.isVisible = false
            end)
        end
    end
end

function GuiScreen:addTransform(name, transform)
    self.transforms[name] = transform
end

function GuiScreen:playTransform(name, delay)
    local gui = self:getGui()
    return gui:transform(self.transforms[name], delay)
end

function GuiScreen:getGui()
    local scene = core.scenemanager.nextScene or core.scenemanager.currentScene
    return scene.gui
end

function GuiScreen:reset()
    self:initElements()
    self:initScreens()
end

function GuiScreen:registerElements()
    local elementList = self:createElements()
    for _, element in ipairs(elementList) do
        if (element.is ~= nil) then
            self:addElement(element.name, element)
            element.screen = self
        else
            self:addElement(element[1].name, element[1])
            if (element[2] == false) then
                element[1].isVisible = false
            end
            element[1].screen = self
        end
    end
end

function GuiScreen:createElements()
    -- Empty function
end

return GuiScreen