master_setup

--Find peripherals
pList = peripheral.getNames()

function getPeripherals(pType, pName)
    local name in pairs(pList) do
    if pType == 'modem' then
        if peripheral.getType(name) == pType then
            rednet.open(name)
        end
    elseif peripheral.getType(name) == pType then
        pName = peripheral.wrap(name)
    end
end

function sendMessage(recipient, mType, mCmd[])
    rednet.send(recipient, textutils.serialize(mType, mCmd[]))
end

function getMessage()
    mId, message = rednet.receive()
    mType, message = textutils.unserialize(message)
end

getPeripherals('modem', nil)

getPeripherals('monitor', 'mon')

mon.write('hello')

rednet.broadcast(textutils.serialize({'master', {'login'}}))
while true do
    getMessage()
    if mType == 'slave' and message[1] == 'logged in' then
        if fs.exists('slave') then
            if fs.exists('slave/id') then
            else
                local file = fs.open('slave/id', 'w')
                file.write(mId)
                file.close()
                mon.setCursorPos(1, 2)
                mon.write('Slave '..mId..' registered!')
            end
        else
            fs.makeDir('slave')
            local file = fs.open('slave/id', 'w')
            file.write(mId)
            file.close()
            mon.setCursorPos(1, 2)
            mon.write('Slave '..mId..' registered!')
        end
    elseif mType == 'reactor' and message[1] == 'ready' then
        if fs.exists('reactor') then
            local file = fs.open('reactor/info','w')
            file.write(message[2])
            file.close()
        else
            fs.makeDir('reactor')
            local file = fs.open('reactor/info','w')
            file.write(message[2])
            file.close()
        end
        print('System ready')
        break
    end
end