File Updater Script

update.lua

FILES = { 
    ["foofile1"] = "url1",
    ["foofile2"] = "url2"
}

function update_file(filename, url)
    local cacheBreak = tostring(math.random(0, 99999))
     
    res, err = http.get(url .. "?breaker=" .. cacheBreak)
    if not res then error(err) end
     
    local code = res.readAll()
     
    if not(fs.exists(filename))
    then
        local newFile = fs.open(filename, 'w')
        newFile.close()
    end
     
    local readFile = fs.open(filename, 'r')
    local oldCode = readFile.readAll()
    readFile.close()
     
    local file = fs.open(filename, 'w')
     
    if oldCode == code
    then
        file.write(oldCode)
        print(filename .. ': NO CHANGES MADE - Same Code')
    else
        file.write(code)
        print(filename .. ': WRITING UPDATE')
        byteDiff = string.len(code) - string.len(oldCode)
     
        if byteDiff >= 0
        then
            print(filename .. ': ' .. tostring(math.abs(byteDiff)) .. ' bytes added')
        else
            print(filename .. ': ' .. tostring(math.abs(byteDiff)) .. ' bytes removed')
        end
    end
     
    file.close()
    res.close()
end

math.randomseed(os.time())

for file, url in pairs(FILES) do
    update_file(file, url)
end

-- Pastebin: https://pastebin.com/qMpy7hiB