Trade Station Controller Installer

--Redstone Controller Installer
function download(code, location)
    url = http.get("https://www.pastebin.com/raw/"..code)
    f = fs.open(location,"w") --#opens file in write mode, has to be specified with location
    f.write(url.readAll()) --#reads every byte of url and writes it to location
    f.close() --# always close the file >:c
    return true --#return true so function can be used in ifs
end

if peripheral.getType("top")  ~= "modem" then
    print("No Modem Found. Please Install Modem into back of computer then run the code again.");
else
    term.clear();
    term.setCursorPos(1,1);

    local minecraftID;
    local displayName;
    local increment;
    local color;

    while true do
        term.clear();
        term.setCursorPos(1,1)
        print("Please enter the item id that you wish to add \n (Ex. minecraft:redstone) ALL LOWERCASE\n> ");
        term.setCursorPos(3, 3)
        minecraftID = read();

        print("Please enter the Display Name of the item that you wish to add (Ex. Redstone Dust)\n> ")
        term.setCursorPos(3, 6)
        displayName = read();

        print("Please Type the amount that you want to increment by. \n> ");
        term.setCursorPos(3, 9)
        increment = read();
        term.clear();
        term.setCursorPos(1,1)
        print("===========================================");
        print("Please Enter The Display Color");
        print("===========================================");
        print(" 1) White       2) Orange   3) Magenta");
        print(" 4) Light Blue  5) yellow   6) lime");
        print(" 7) Pink        8) Gray     9) Light Gray");
        print("10) Cyan       11) Purple  12) Blue");
        print("13) Brown      14) Green   15) Red");
        print("===========================================");
        print("> ")
        term.setCursorPos(3, 10)

        while true do
            color = tonumber(read());
            if color == nil or color < 1 or color > 16 then
                print("Error Color Not Found. Try Again.")
            else
                break;
            end
        end

        local displayColor;
        if color == 1 then color = colors.white; displayColor = "White";
        elseif color == 2 then color = colors.orange; displayColor = "Orange";
        elseif color == 3 then color = colors.magenta; displayColor = "Magenta";
        elseif color == 4 then color = colors.lightBlue; displayColor = "Light Blue";
        elseif color == 5 then color = colors.yellow; displayColor = "Yellow";
        elseif color == 6 then color = colors.lime; displayColor = "Lime";
        elseif color == 7 then color = colors.pink; displayColor = "Pink";
        elseif color == 8 then color = colors.gray; displayColor = "Gray";
        elseif color == 9 then color = colors.lightGray; displayColor = "Light Gray";
        elseif color == 10 then color = colors.cyan; displayColor = "Cyan";
        elseif color == 11 then color = colors.purple; displayColor = "Purple";
        elseif color == 12 then color = colors.blue; displayColor = "Blue";
        elseif color == 13 then color = colors.brown; displayColor = "Brown";
        elseif color == 14 then color = colors.green; displayColor = "Green";
        elseif color == 15 then color = colors.red; displayColor = "Red";
        end

        term.clear();
        term.setCursorPos(1,1);
        print("=========================================");
        print("Is This Correct? [y/n]")
        print("=========================================");
        print("Item ID: " .. minecraftID);
        print("Display Name: " .. displayName);
        print("Increment: " .. increment);
        print("Color: " .. displayColor);
        print("=========================================");
        print("> ")
        term.setCursorPos(3, 9)
        local answer = read();
        if answer == "y" then break; end
    end
    local data = {};
    data["itemID"] = minecraftID;
    data["displayName"] = displayName;
    data["increment"] = increment;
    data["color"] = color;

    os.setComputerLabel("[" .. displayName .. "] Trade Station Controller");

    fs.delete("data.dat");
    local file = fs.open("data.dat", "w");
    file.write(textutils.serialize(data));
    file.close();
    fs.delete("/SmallGUI/init.lua")
    print("Downloading SmallGUI Library...");
    download("kY7CPumC", "/SmallGUI/init.lua");
    fs.delete("startup.lua");
    print("Downloading Trade Station Controller Program...");
    download("bGmPju0E", "startup.lua");

    os.reboot();
end