M-OS Installer (1.2)

--This is my OS called M-OS.
--It is pretty simple. But, it is fast, and easy to use!
--I hope you enjoy my OS!

fs.delete("boot")
fs.delete("setup")

function installingData(file)
    term.setCursorPos(1,19)
    term.clearLine()
    print("Installing: " .. file)
end

local function get(repoFile,saveTo)
local download = http.get("https://raw.githubusercontent.com/MarcoPolo0306/M-OS/master/"..repoFile)
installingData(saveTo)
if download then
   local handle = download.readAll()
   download.close()
   local file = fs.open(saveTo,"w")
   file.write(handle)
   file.close()
  else
   print("Unable to download the file "..repoFile)
   print("Make sure you have the HTTP API enabled or")
   print("an internet connection!")
  end
end

w,h = term.getSize()
slc = 0

function menu()
    term.setCursorPos(1,1)
    paintutils.drawFilledBox(1,1,w, h, colors.white)
    paintutils.drawLine(1,1,w, 1, colors.lightBlue)
    term.setCursorPos(1,1)
    term.setTextColor(colors.white)
    term.setBackgroundColor(colors.lightBlue)
    print(" M-OS Setup")
end

function welcomeScreen()
    slc = 1
    term.setTextColor(colors.gray)
    term.setBackgroundColor(colors.white)
    term.setCursorPos(8,3)
    print("Welcome to the M-OS installer.")
    term.setCursorPos(8,4)
    print('Click the "Next" button to continue.')
    term.setCursorPos(36,14)
    term.setBackgroundColor(colors.gray)
    term.setTextColor(colors.lightGray)
    print(" Next ")
end

function copy()
    slc = 0
    term.setBackgroundColor(colors.black)
    term.clear()
    menu()
    term.setTextColor(colors.gray)
    term.setBackgroundColor(colors.white)
    term.setCursorPos(8,3)
    print("Backing up old files...")
end

function installingData(msg)
    term.setCursorPos(1,18)
    term.setBackgroundColor(colors.white)
    term.clearLine()
    term.setTextColor(colors.lightGray)
    print("Installing: " .. msg)
end

function setPos()
    term.setCursorPos(1,-100)
end

function install()
    slc = 2
    term.setBackgroundColor(colors.black)
    term.clear()
    menu()
    term.setTextColor(colors.gray)
    term.setBackgroundColor(colors.white)
    term.setCursorPos(8,3)
    print("M-OS is installing...")
    setPos()
    get("startup","startup")
    get("m-os/boot","m-os/boot")
    get("m-os/desktop","m-os/desktop")
    get("m-os/logon","m-os/logon")
    get("m-os/monitior_detected","m-os/monitior_detected")
    get("m-os/restore","m-os/restore")
    get("m-os/settings","m-os/settings")
    get("m-os/shutdown","m-os/shutdown")
    get("m-os/config/bgPath","m-os/config/bgPath")
    get("m-os/config/pass","m-os/config/pass")
    get("m-os/config/showBiosOnStartup","m-os/config/showBiosOnStartup")
    get("m-os/config/updateOnStartup","m-os/config/updateOnStartup")
    get("m-os/config/theme","m-os/config/theme")
    get("m-os/images/logo","m-os/images/logo")
    get("m-os/images/backgrounds/cc","m-os/images/backgrounds/cc")
    get("m-os/images/backgrounds/default","m-os/images/backgrounds/default")
    get("m-os/images/backgrounds/mc","m-os/images/backgrounds/mc")
    get("m-os/images/icons/file","m-os/images/icons/file")
    get("m-os/images/icons/shell","m-os/images/icons/shell")
    get("m-os/images/icons/unknown","m-os/images/icons/unknown")
    get("m-os/images/icons/paint","m-os/images/icons/paint")
    get("m-os/images/icons/nPaint","m-os/images/icons/nPaint")
    get("m-os/images/UserPiciture","m-os/images/UserPiciture")
    get("m-os/images/default-preview","m-os/images/default-preview")
    get("m-os/images/mc-preview","m-os/images/mc-preview")
    get("m-os/programs/appstore","m-os/programs/appstore")
    get("m-os/programs/file_browser","m-os/programs/file_browser")
    get("m-os/programs/installed_programs","m-os/programs/installed_programs")
    get("m-os/programs/mshell","m-os/programs/mshell")
    get("m-os/programs/news","m-os/programs/news")
    get("m-os/programs/programs","m-os/programs/programs")
    get("setup2","setup2")
    get("boot","boot")
    finish()
end

function finish()
    slc = 3
    term.setBackgroundColor(colors.black)
    term.clear()
    menu()
    term.setTextColor(colors.gray)
    term.setBackgroundColor(colors.white)
    term.setCursorPos(8,3)
    print("Thank you for intalling M-OS.")
    term.setCursorPos(8,4)
    print("Click Reboot to continue the setup.")
    term.setCursorPos(36,14)
    term.setBackgroundColor(colors.gray)
    term.setTextColor(colors.lightGray)
    print(" Reboot ")
end

term.setBackgroundColor(colors.black)
term.clear()

menu()
welcomeScreen()

while true do
    local event, button, X, Y = os.pullEvent()
    if event == "mouse_click" then
        if X>=36 and X<=41 and Y==14 and button ==1 and slc == 1 then
            if fs.exists("m-os") then
                copy()
                if fs.exists(".m-os_BACKUP") then
                    fs.delete(".m-os_BACKUP")
                end
                shell.run("cp","m-os",".m-os_BACKUP")
                fs.delete("m-os")
                sleep(1)
                install()
            else
                install()
            end
        elseif X>=36 and X<=44 and Y==14 and slc == 3 then
            fs.delete("install")
            shell.run("boot")
        end
    end
    if src == 2 then
        input = read()
    end
end