-- If not debug then returning a blank class.
if not _G.ENABLE_DEBUG_OVERLAY then
    local void = {}
    local mt = {
        __index = function(self, key) return self end,
        __newindex = function(self, key) return self end,
        __metatable = {},
        __call = function() return void end
        }
    setmetatable(void, mt)
    print(void)
    return void
end

require("imgui")
local class, object =  require("class"), require("class.object")
local Console = require("debug_overlay.console")
local Graphs = require("debug_overlay.graphs")
local Watch = require("debug_overlay.watch")


local Debug = class(object)

function Debug:init()
    self.debug_menus = {
        Debug = {
            Console = Console:new(),
            Watch = Watch:new(),
            Graphs = Graphs:new(),
        }
    }
    self.console = self.debug_menus.Debug.Console
    self.watch = self.debug_menus.Debug.Watch

end

function Debug:register_menu(menu_name, windows)
    if self.debug_menus[menu_name] then
        self.console:error('Debug : '..menu_name.." debug menu is already registered.")
        return
    end
    self.debug_menus[menu_name] = windows
end

function Debug:render()
    self.debug_menus.Debug.Graphs:update()
    if imgui.BeginMainMenuBar() then
        for menu,windows in pairs(self.debug_menus) do
        -- Menu
            if imgui.BeginMenu(menu) then
                for k,v in pairs(windows) do
                    if imgui.MenuItem(k, v.shortcut, v.visible) then
                        v:toggle()
                    end
                end
                imgui.EndMenu()
            end
        end
        imgui.EndMainMenuBar()
        for menu,windows in pairs(self.debug_menus) do
            for k, window in pairs(windows) do
                if window.visible then
                    window:render()
                end
            end
        end
    end
end

function Debug:keypressed(key)
    for _, windows in pairs(self.debug_menus) do
        for __, window in pairs(windows) do
            if window.shortcut and key == window.shortcut then
                window:toggle()
            end
        end
    end
end

return Debug