Pig Gives Birth

gistfile1.txt

// the business logic for the creation of a new litter

Find the pig with the given id to make sure it's on the user's farm, female and pregnant. If not, return error.

Find the pig's most recent mating, which should be in a gestating state. If not, return error.

If it's been less than 100 days or more than 130 days since the mating, return error.

Update the mating to a successful state.

Update the pig to a lactating state.

Create a new birth event.

Create a new litter with the given number of piglets and the pig as the mother.