-- bits-UI: An operating system for ComputerCraft. Licensed with GPL-3.0.

local version = "1.0 Alpha 1"
local desktop = "/system/desktop.lua"

term.clear()
term.setCursorPos(1,1)
print("Starting up bits-UI ".. version .."...")
sleep(3)

if term.isColor() then
    print("[ OK ] Advanced Computer is detected...")
else
    print("[ ERROR ] You need a advanced computer in order to make the UI functional...")
    sleep(3)
    os.shutdown()
end

sleep(3)

if fs.exists(desktop) then
    print("[ OK ] Desktop has been found...")
else
    print("[ ERROR ] Desktop cannot be found...")
    sleep(3)
    os.shutdown()
end

sleep(3)

if fs.exists("/home") then
    print("[ OK ] Home has been found...")
else
    fs.makeDir("/home")
    print("[ OK ] Home directory has been created...")
end

sleep(3)

if fs.exists("/system/bitUI.config") then
    print("[ OK ] Config has been found...")
else
    file = io.open("/system/bitUI.config", "w")
    file:close()

    print("[ INFO ] Config has not been found!")
    print("[ INFO ] You will be sent to the OOBE setup...")
end

sleep(3)

print("[ INFO ] Boot sequence is completed...")

sleep(3)
shell.run(desktop)