Big Brother Base

--big brother base
--this program handles the base operations of the big brother system. these functions includes communications, file management, security, propoganda, etc
--this program is for Minecraft 1.16.5, CC Tweaked
local modem = peripheral.find("modem") or error("No modem attached", 0)
local Broadcasting = false
modem.open(43)

function start()
print("checking power status")
modem.transmit(32, 43, "power_check")
local event, side, channel, replyChannel, message, distance
repeat
    event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
until channel == 43
if message == "power_status.online" then
    print("power online")
    Boot()
else
    print("power offline")
    print("shutting down....")
    os.sleep(5)
    os.shutdown()
end
end

function Boot()
print("checking security systems")
modem.transmit(33,43, "security_check")
local event, side, channel, replyChannel, message, distance
repeat
    event, side, channel, replyChannel, message, distance = os.pullEvent("modem_message")
until channel == 43
if message == "security_status.online" then
    print("security Online")
    print("starting alert broadcast")
    parallel.waitForAll(Broadcast("Boot.dfpwm",5),Main)
else

end
end

function Main()
term.clear()
term.setCursorPos(1,1)
print("System Online")
while true do
    local event, a, b, c, d, e, f, g = os.pullEvent()
    if event == "modem_message") then
        if d == "power_status.offline" then
            print("power offline")
            print("shutting down.....")
            os.sleep(7)
            os.shutdown()
        elseif string.find(d,"PublicAnnouncement_") then
            modem.transmit(8,43,string.sub(d,19,string.len(d)))
            if Broadcasting == false then Broadcast("PublicAnnouncement.dfpwm",5) end
        end
    else
        if os.time() > 5.5 and os.time() < 6.1 then
            if Broadcasting == false then Broadcast("Morning.dfpwm",5) end
        elseif os.time() > 19.5 and os.time() < 20.1 then
            if Broadcasting == false then Broadcast("Afternoon.dfpwm",5) end
        end
    end
    os.queueEvent("pass")
end
end

function Broadcast(file,channel)
Broadcasting = true
local dfpwm = require "cc.audio.dfpwm"
local decoder = dfpwm.make_decoder()
for input in io.lines(file, 16 * 1024) do
  local decoded = decoder(input)
  modem.transmit(channel,43,textutils.serialize(decoded))
end
Broadcasting = false
end


start()