CC Alarm (command computer)

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-- Alarm, 5 min countdown for command computer
-- by SukaiPoppuGo
--

-- Usage: Alarm 4 55
-- set the alarm at 4h55, for a countdown until 5h00
local alarmH, alarmM = ...

local alarm = tonumber(alarmH) + (tonumber(alarmM)/60)

print("Alarm set at:", alarm, "(", alarmH.."h"..alarmM, ")")

-- Formate un nombre de secondes en durée lisible
local function timeStr(sec)
    local d = math.floor(sec/86400) --24*60*60 sec
    local h = math.floor(sec/3600)%24 -- 60x60 sec
    local m = math.floor(sec/60)%60 -- 60sec
    local s = math.floor(sec%60) --Reste
    local str = ""
    if d>0 then str = d>1 and d.." days " or "1 day " end
    if h>0 then str = str..h.."h" end
    if m>0 then str = str..(m>9 and m or "0"..m) end
    if h==0 then str = m>0 and str..":"..(s>9 and s or "0"..s) or s.."s" end
    return str
end

local function delayUpdate()
    local h = os.time("local")
    print("Start delay at", textutils.formatTime( h, true ) )

    if h > alarm then
        return (24 - h + alarm) * 60 * 60 -- conversion en nombre de secondes
    else
        return (alarm - h) * 60 * 60
    end
end

repeat
    local delay = os.startTimer(delayUpdate())
    print("Delay:", timeStr(delay))
    os.pullEvent("timer")
    for i=5,0,-1 do
        local message = string.format("§c§lReboot du serveur dans %s min", i)
        commands.say(message)
        print("Say:", message)
        print("at", textutils.formatTime( os.time("local"), true ) )
        sleep(60)
    end
until false