--Variable
local osVer = "Alpha 1.0"
local w,h = term.getSize()
local brunning = true
local slc = 0
local _mtext = 1
local _mback = 128

--Tables
local menu = {
        [""] = {tcol = _mtext; bcol = _mback; x = 1; xx = 7; y = 1; cmd = function() slc = 1 end};
        ["            "] = {tcol = _mtext; bcol = _mback; x = 1; xx = 12; y = 2; cmd = function() end};
        [" Programs > "] = {tcol = _mtext; bcol = _mback; x = 1; xx = 12; y = 3; cmd = function() end};
        [" Settings > "] = {tcol = _mtext; bcol = _mback; x = 1; xx = 12; y = 4; cmd = function() end};
        [" Lua Prompt "] = {tcol = _mtext; bcol = _mback; x = 1; xx = 12; y = 5; cmd = function() end};
        [" Quit       "] = {tcol = _mtext; bcol = _mback; x = 1; xx = 12; y = 6; cmd = function() term.setBackgroundColor(colors.black) term.setCursorPos(1,1) term.clear() brunning = false end};
        [" Shutdown   "] = {tcol = _mtext; bcol = _mback; x = 1; xx = 12; y = 7; cmd = function() os.shutdown() end};
        [" Logoff     "] = {tcol = _mtext; bcol = _mback; x = 1; xx = 12; y = 8; cmd = function() end};
        [" Reboot     "] = {tcol = _mtext; bcol = _mback; x = 1; xx = 12; y = 9; cmd = function() shell.run("pastebin run ghqk3qWx") end};
        [" Glitch     "] = {tcol = _mtext; bcol = _mback; x = 1; xx = 12; y = 10; cmd = function() for i=1, 500 do  print("ERROR") end os.shutdown() end};
}
--Functions
local function tb_Draw()
        term.setCursorPos(1,1)
        term.setBackgroundColor(8)
        term.setTextColor(1)
        term.clearLine()
        print("[Begin]")
        term.setCursorPos(math.floor(w)-#osVer, 1)
        print(osVer)
end

local function clear(bcol)
        term.setBackgroundColor(bcol)
        term.clear()
end

local function drawMenu()
        for k,v in pairs(menu) do
                term.setBackgroundColor(v.bcol)
                term.setTextColor(v.tcol)
                term.setCursorPos(v.x, v.y)
                print(k)
        end
end

local function menuClick()
        for k,v in pairs(menu) do
                if      e[1] == "mouse_click" then
                        if e[2] == 1 then
                                if e[3] >= v.x and e[3] <= v.xx and e[4] == v.y then
                                        v.cmd()
                                        else slc = 0 clear(colors.black) tb_Draw()
                                end
                        end
                end
        end
end

--Main code
shell.run("clear")
print("Starting...")
textutils.slowPrint("########")
sleep(0.2)
print("Testing ram...")
sleep(0.2)
print("Testing disk...")
sleep(0.2)
print("Testing CPU...")
sleep(0.2)
print("Testing GPU...")
sleep(0.2)
print("Done..")
sleep(0.1)
clear(colors.black)
tb_Draw()
while brunning do
e = {os.pullEvent()}
        if slc == 0 then
                clear(colors.black)
                tb_Draw()
                if      e[1] == "mouse_click" then
                        if e[2] == 1 then
                                if e[3] >= 1 and e[3] <= 7 and e[4] == 1 then
                                        slc = 1
                                        drawMenu()
                                end
                        end
                end

        elseif slc == 1 then
                drawMenu()
                menuClick()
        end
end