-- scenes/options :: a basic example of how to handle gamecore options in a menu

--[[
  Copyright © 2019 Kazhnuz

  Permission is hereby granted, free of charge, to any person obtaining a copy of
  this software and associated documentation files (the "Software"), to deal in
  the Software without restriction, including without limitation the rights to
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  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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  COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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]]

local Scene     = require "gamecore.modules.scenes"
local OptionsMenu  = Scene:extend()

local ListBox   = require "gamecore.modules.menusystem.listbox"
local Widget    = require "gamecore.modules.menusystem.widgets"

local DoubleTextWidget = Widget.Text:extend()

local SubMenuWidget = DoubleTextWidget:extend()
local SceneWidget   = Widget.Text:extend()
local ExitWidget    = Widget.Text:extend()

function OptionsMenu:new()
  OptionsMenu.super.new(self)
  self.assets:addImageFont("medium", "examples/mainmenu/assets/medium")

  self:addMenu("main", true)
  self:addSubMenu("basic", "Basic Tests")
  self:addScene("basic", examples.Test, "Basic Test 1")
  self:addScene("basic", examples.Test2, "Basic Test 2")
  self:addScene("basic", examples.TestMenu, "Basic Test Menu")
  self:addSubMenu("menus", "Menus Tests")
  self:addScene("menus", examples.Inventory, "Inventory")
  self:addSubMenu("gameplay", "Games Examples")
  self:addScene("gameplay", examples.MovePlayer, "Movable Player")

  ExitWidget(self, "main")
  self.menusystem:switchMenu("main")
end

-- MENU FUNCTION
-- Functions that serve the handling of menus

function OptionsMenu:addMenu(name, nobackbutton)
  local screenHeight, screenWidth = core.screen:getDimensions()
  local w, h = 424/2, 240 - 48
  local x, y = w / 2, 24
  ListBox(self.menusystem, name, x, y, w, h, 8)
end

function OptionsMenu:addSubMenu(name, fullname)
  self:addMenu(name)
  SubMenuWidget(self, "main", name, fullname)
  SubMenuWidget(self, name, "main", "Back", 1, "<")
end

function OptionsMenu:addScene(submenu, scene, fullname)
  SceneWidget(self, submenu, scene, fullname)
end

function OptionsMenu:draw()
  love.graphics.setColor(.3,  .1, .4, 1)
  love.graphics.rectangle("fill", 0, 0, 424, 240)
end

-- WIDGETS
-- Widgets used by menus

-- DoubleText widget : a two-side text widget

function DoubleTextWidget:new(menu, font, label1, label2)
  DoubleTextWidget.super.new(self, menu, font, label1)
  self.label2 = label2 or ""
end

function DoubleTextWidget:drawCanvas()
  local w, h
  w = math.floor(self.width)
  h = math.floor(self.height / 2) - (self.font:getHeight() / 2)
  self.font:draw(self.label, 4, h, -1, "left")
  self.font:draw(self.label2, w-4, h, -1, "right")
end

-- Submenu widget :: go to a submenu

function SubMenuWidget:new(scene, menu, newmenu, fullname, order, label2)
  self.scene = scene
  local widgetmenu  = self.scene.menusystem.menus[menu]
  local font        = self.scene.assets.fonts["medium"]
  local label2      = label2 or ">"
  self.newmenu      = newmenu
  SubMenuWidget.super.new(self, widgetmenu, font, fullname, label2)
  self.order = order or 0
end

function SubMenuWidget:action()
  self.scene.menusystem:switchMenu(self.newmenu)
end

-- Scene widget :: switch scene

function SceneWidget:new(scene, menu, newscene, fullname)
  self.scene = scene
  local widgetmenu  = self.scene.menusystem.menus[menu]
  local font        = self.scene.assets.fonts["medium"]
  self.newscene     = newscene
  SceneWidget.super.new(self, widgetmenu, font, fullname)
end

function SceneWidget:action()
  core.scenemanager:storeCurrentScene("mainmenu")
  self.newscene()
end

-- Exit Widget : exit the examples

function ExitWidget:new(scene, menu)
  self.scene = scene
  local widgetmenu  = self.scene.menusystem.menus[menu]
  local font        = self.scene.assets.fonts["medium"]
  SceneWidget.super.new(self, widgetmenu, font, "Exit")
end

function ExitWidget:action()
  core.scenemanager:setStoredScene("mainmenu")
end

return OptionsMenu