sender

---@class command
---@field key string
---@field arguments rednet.transmittable[]

local COMMAND_PROTOCOL = "controller.command"
local REQUEST_PROTOCOL = "controller.request"
local RESPONSE_PROTOCOL = "controller.response"

local connectedTurtles = {}

local function split(str, sep)
    sep = sep or "%s"

    local t = {}

    for s in string.gmatch(str, "[^" .. sep .. "]+") do
        table.insert(t, s)
    end

    return t
end

local function receiver()
    while true do
        local id, message = rednet.receive(REQUEST_PROTOCOL)

        if message == "connect" then
            rednet.send(id, true, RESPONSE_PROTOCOL)
            table.insert(connectedTurtles, id)
        end
    end
end

local function main()
    term.clear()
    term.setCursorPos(1, 1)

    peripheral.find("modem", rednet.open)

    while true do
        term.setTextColor(colors.yellow)
        write("$ ")

        term.setTextColor(colors.white)
        local input = read()
        local args = split(input)

        rednet.broadcast({ key = table.remove(args, 1), arguments = args }, COMMAND_PROTOCOL)
    end
end

parallel.waitForAll(main, receiver)