Trigger on Village Creation

I'm fairly new to MCreator and I've got a solid mod idea that requires a procedure to trigger upon the creation of a village; i.e. when a village spawns in the world. The procedure I'm trying to create will upon creation of a village will give the village an ID, each villager an ID tied to their village ID, the number of villagers tied to the village ID, and the player "reputation" in relation to that village largely based on trades. I've tried searching the wiki and forums to see if such triggers and elements exist and I'm not finding any. Is this procedure possible or is custom code required to do this? If it is required can someone help me understand the code required to pull this off?