Pine3D installer

local width, height = term.getSize()

local function update(text)
    term.setBackgroundColor(colors.black)
    term.setTextColor(colors.white)
    term.setCursorPos(1, 9)
    term.clearLine()
    term.setCursorPos(math.floor(width/2 - string.len(text)/2), 9)
    write(text)
end

local function bar(ratio)
    term.setBackgroundColor(colors.gray)
    term.setTextColor(colors.lime)
    term.setCursorPos(1, 11)

    for i = 1, width do
        if (i/width < ratio) then
            write("]")
        else
            write(" ")
        end
    end
end

local function download(downloadPath, savePath)
    term.setBackgroundColor(colors.black)
    term.setTextColor(colors.white)
    term.setCursorPos(1, 13)
    term.clearLine()
    term.setCursorPos(1, 14)
    term.clearLine()
    term.setCursorPos(1, 15)
    term.clearLine()
    term.setCursorPos(1, 16)
    term.clearLine()
    term.setCursorPos(1, 17)
    term.clearLine()
    term.setCursorPos(1, 13)

    print("Accessing https://raw.githubusercontent.com/Xella37/Pine3D/master/"..downloadPath)
    local rawData = http.get("https://raw.githubusercontent.com/Xella37/Pine3D/master/"..downloadPath)
    local data = rawData.readAll()
    local file = fs.open(savePath, "w")
    file.write(data)
    file.close()
end

function install()
    term.setBackgroundColor(colors.black)
    term.setTextColor(colors.yellow)
    term.clear()

    local str = "Pine3D Installer"
    term.setCursorPos(math.floor(width/2 - #str / 2), 2)
    write(str)

    update("Installing...")
    bar(0)

    update("Downloading Pine3D.lua...")
    download("Pine3D.lua", "Pine3D.lua")
    bar(0.2)

    update("Downloading betterblittle.lua...")
    download("betterblittle.lua", "betterblittle.lua")
    bar(0.4)

    update("Downloading Mountains.lua...")
    download("Mountains.lua", "Mountains.lua")
    bar(0.5)

    update("Downloading noise.lua...")
    download("noise.lua", "noise.lua")
    bar(0.6)

    update("Creating models folder...")
    fs.makeDir("models")
    bar(0.7)

    update("Downloading box model...")
    download("models/box", "models/box")
    bar(0.8)

    update("Downloading emerald model...")
    download("models/emerald", "models/emerald")
    bar(0.9)

    update("Downloading pineapple model...")
    download("models/pineapple", "models/pineapple")
    bar(1)

    update("Installation finished!")

    sleep(1)

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

    term.setCursorPos(1, 1)
    write("Finished installation!\nPress any key to close...")

    os.pullEventRaw()

    term.clear()
    term.setCursorPos(1, 1)
end

install()