Recovery Pocket server

-- Doggy OS Pocket Recovery Server

local diskPath = "/disk/"
local recoveryPath = "/recovery/"

local function handleRequest(path, response)
    local fullPath = shell.resolve(path)

    if fs.exists(fullPath) then
        local file = fs.open(fullPath, "r")
        response.write(file.readAll())
        file.close()
    else
        response.setStatus(404)
        response.write("File not found.")
    end
end

local function startServer()
    local modemSide = "back"  -- Change this to the side where the modem is connected
    local modem = peripheral.wrap(modemSide)

    local serverID = os.getComputerID()

    print("Doggy OS Pocket Recovery Server")
    print("ID: " .. serverID)

    while true do
        local event, modemSide, senderChannel, replyChannel, message = os.pullEvent("modem_message")
        if senderChannel == tonumber(serverID) then
            if message == "GET /disk/" then
                handleRequest(diskPath, modem)
            elseif message == "GET /recovery/" then
                handleRequest(recoveryPath, modem)
            end
        end
    end
end

startServer()