Update Copyright Headers #1

	name: Update Copyright Headers

	on:
	# Runs at 00:00 UTC on Jan 1st or via manual trigger
	schedule:
	- cron: '0 0 1 1 *'
	workflow_dispatch:
	inputs:
	newYear:
	description: "Desired year to update to (e.g. 2025). If not provided, will auto-detect."
	required: false

	jobs:
	update-headers:
	runs-on: ubuntu-latest
	steps:
	- name: Check out repository
	uses: actions/checkout@v3

	- name: Determine years for update
	id: determine-years
	run: \|
	INPUT_YEAR="${{ github.event.inputs.newYear }}"

	if [ -z "$INPUT_YEAR" ]; then
	PREVIOUS_YEAR=$(( $(date +'%Y') - 1 ))
	CURRENT_YEAR=$(date +'%Y')
	echo "Using scheduled run logic: ${PREVIOUS_YEAR} -> ${CURRENT_YEAR}"
	else
	PREVIOUS_YEAR=$(( INPUT_YEAR - 1 ))
	CURRENT_YEAR=$INPUT_YEAR
	echo "Using manual input logic: ${PREVIOUS_YEAR} -> ${CURRENT_YEAR}"
	fi

	echo "PREVIOUS_YEAR=$PREVIOUS_YEAR" >> $GITHUB_ENV
	echo "CURRENT_YEAR=$CURRENT_YEAR" >> $GITHUB_ENV

	- name: Bump ending year in copyright headers
	run: \|
	echo "Replacing year $PREVIOUS_YEAR with $CURRENT_YEAR ..."
	find . -type f \
	-exec sed -i -E "s/(Copyright \$c\$ [0-9]{4})-$PREVIOUS_YEAR/\\1-$CURRENT_YEAR/g" {} +

	- name: Commit and push changes
	run: \|
	git config user.name "github-actions"
	git config user.email "[email protected]"

	if [ -n "$(git status --porcelain)" ]; then
	git add .
	git commit -m "Auto-update copyright year to $CURRENT_YEAR"
	git push
	else
	echo "No changes to commit."

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