local MenuSystem = Object:extend()

local cwd  = (...):gsub('%.init$', '') .. "."

MenuSystem.Parent       = require(cwd .. "parent")
MenuSystem.ListBox      = require(cwd .. "listbox")
MenuSystem.FlowBox      = require(cwd .. "flowbox")
MenuSystem.Grid         = require(cwd .. "grid")
MenuSystem.TextMenu     = require(cwd .. "textmenu")

MenuSystem.Widget       = require(cwd .. "widgets")


--local VirtualPad = require "modules.virtualpad"

function MenuSystem:new()
  self.menus = {}
  self.focusedMenu = ""
end

function MenuSystem:reset()
  self.menus = {}
end

function MenuSystem:addMenu(name, menu)
  self.menus[name] = menu
end

function MenuSystem:update(dt)
  self:removeDestroyedMenus()
  for k,v in pairs(self.menus) do
    v:update(dt)
    v:updateWidgets(dt)
  end

  if self.menus[self.focusedMenu] ~= nil then
    -- Only check buttons if the current focused menu is actually active
    if self.menus[self.focusedMenu].isActive then
      for k,v in pairs(self.keys) do
        if self.keys[k].isPressed then
          self.menus[self.focusedMenu]:keyreleased(k)
        end
      end
    end
  end

end

function MenuSystem:switchMenu(menu)
  for k,v in pairs(self.menus) do
    if k == menu then
      v:getFocus()
      v:setVisibility(true)
      v:setActivity(true)
    else
      v:setVisibility(false)
      v:setActivity(false)
    end
  end
end

function MenuSystem:setAllMenuVisibility(visibility)
  for k,v in pairs(self.menus) do
    v:setVisibility(visibility)
  end
end

function MenuSystem:setAllMenuActivity(activity)
  for k,v in pairs(self.menus) do
    v.isActive = activity
  end
end

function MenuSystem:removeDestroyedMenus()
 -- On retire les entitées marquées comme supprimées
  for k,v in pairs(self.menus) do
    if (v.isDestroyed == true) then
      self.menus[k] = nil
    end
  end
end

function MenuSystem:keyreleased(key, code)
  -- TODO:depreciated function
end

function MenuSystem:mousemoved(x, y, dx, dy)
  for k,v in pairs(self.menus) do
    if v.isActive then
      if (x > v.x) and (x < v.x + v.w) and (y > v.y) and (y < v.y + v.h) then
        v:mousemoved(x - v.x, y - v.y)
        break;
      end
    end
  end
end

function MenuSystem:mousepressed( x, y, button, istouch )
  for k,v in pairs(self.menus) do
    if v.isActive then
      if (x > v.x) and (x < v.x + v.w) and (y > v.y) and (y < v.y + v.h) then
        v:mousepressed(x - v.x, y - v.y, button, istouch )
        break;
      end
    end
  end
end

function MenuSystem:getDrawList()
  local drawList = {}
  for k,v in pairs(self.menus) do
    local drawObject = {}
    drawObject.name   = k
    drawObject.depth  = v.depth
    table.insert(drawList, drawObject)
  end
  table.sort(drawList, function(a,b) return a.depth > b.depth end)

  return drawList
end

function MenuSystem:draw(dt) -- On dessine les entitées
  self.drawList = self:getDrawList()

  for i,v in ipairs(self.drawList) do
    local v2 = self.menus[v.name]
    if (v2.isVisible) then
      v2:draw(dt)
    end
  end

  if self.menus[self.focusedMenu] ~= nil then
    if (self.menus[self.focusedMenu].isVisible) then
      self.menus[self.focusedMenu]:drawCursor()
    end
  end

end

return MenuSystem