A simple plugin system that would take minimal development time.

[gabrielcrowe]

BTW: a big player uses webhooks, PayPal.

[george]

This is too complex for many readers pal, why don't you elaborate a wee bit. For us hard of understanding types of course.

[NormanRouxel]

I've asked for similar in a slightly different way.

I'm mainly interested in the page-build phase and a file "actinic_actions.php" (Site folder specific) containing a set of empty PHP routines that are called whenever something happens on the UI would allow a lot finer control. E.g. beforeUpdate, afterUpdate, beforeRefresh, afterRefresh, afterApply, etc, etc.

And a variable "CurrentAction" that dynamically contains values like Updating, Refreshing, Previewing, SinglePagePreview, etc.