Hammerspoon module to pause/unpause Folding@Home

fahmonitor.lua

screenSleep = false
screenSaver = false
screenLock = false
--[[
    A module to pause/unpause Folding@Home depending on screensaver, screen lock, and
    screen sleep state.

    Folding@Home's "only when idle" mode does not pause/unpause the client at obvious times
    or for obvious reasons. Instead, This module uses screen state as in indicator that the
    user is/isn't interacting with the system.

]]

local log = hs.logger.new('main','debug')

function fahPause()
    log.i("Pausing Folding@Home")
    local task = hs.task.new("/usr/local/bin/FAHClient",nil, {"--send-pause"})
    task:start()
end

function fahResume()
    log.i("Resuming Folding@Home")
    local task = hs.task.new("/usr/local/bin/FAHClient",nil, {"--send-unpause"})
    task:start()
end

function updateFah()
    log.i("Doing Folding@Home update")
    log.i("screenLock: ", screenLock)
    log.i("screenSaver: ", screenSaver)
    log.i("screenSleep: ", screenSleep)
    if screenSaver == false and screenLock == false and screenSleep == false then
        fahPause()
    else
        fahResume()
    end
end

function fahMonitorCallback(event)

    if event == hs.caffeinate.watcher.screensaverDidStart then
        log.i("screensaverDidStart")
        screenSaver = true
    elseif event == hs.caffeinate.watcher.screensDidLock then
        log.i("screensDidLock")
        screenLock = true
    elseif event == hs.caffeinate.watcher.screensDidSleep then
        log.i("screensDidSleep")
        screenSleep = true
    elseif event == hs.caffeinate.watcher.screensaverDidStop then
        log.i("screensaverDidStop")
        screenSaver = false
    elseif event == hs.caffeinate.watcher.screensDidUnlock then
        log.i("screensDidUnlock")
        screenLock = false
    elseif hs.caffeinate.watcher.screensDidWake then
        log.i("screensDidWake")
        screenSleep = false
    end

    updateFah()
end

fahWatcher = hs.caffeinate.watcher.new(fahMonitorCallback)
fahWatcher:start()
updateFah()