Add pull request labeling workflow #1

	name: Label Pull Requests

	on:
	pull_request:
	types: [opened, synchronize, reopened]

	jobs:
	label-pr:
	runs-on: ubuntu-latest

	steps:
	- name: Checkout code
	uses: actions/checkout@v4

	- name: Get changed files
	id: changed-files
	run: \|
	git fetch origin ${{ github.base_ref }} --depth=1
	git diff --name-only origin/${{ github.base_ref }} > changed-files.txt
	echo "##[group]Changed files"
	cat changed-files.txt
	echo "##[endgroup]"
	echo "::set-output name=files::$(cat changed-files.txt)"

	- name: Add labels to PR
	env:
	FILES: ${{ steps.changed-files.outputs.files }}
	run: \|
	# Labels
	LABEL_NEW="pr: new extension"
	LABEL_CHANGE="pr: change existing extension"
	LABEL_OTHER="pr: other"

	# Folder to monitor
	TARGET_FOLDER="extensions/"

	# Initialize flags
	ADD_NEW="false"
	MODIFY_EXISTING="false"

	# Process each file
	while IFS= read -r FILE; do
	if [[ "$FILE" == $TARGET_FOLDER* ]]; then
	if ! git ls-tree -r origin/${{ github.base_ref }} --name-only \| grep -q "^$FILE$"; then
	ADD_NEW="true"
	else
	MODIFY_EXISTING="true"
	fi
	fi
	done < changed-files.txt

	# Add labels
	if [[ "$ADD_NEW" == "true" ]]; then
	gh pr edit ${{ github.event.number }} --add-label "$LABEL_NEW"
	fi

	if [[ "$MODIFY_EXISTING" == "true" ]]; then
	gh pr edit ${{ github.event.number }} --add-label "$LABEL_CHANGE"
	fi

	if [[ "$ADD_NEW" == "false" && "$MODIFY_EXISTING" == "false" ]]; then
	gh pr edit ${{ github.event.number }} --add-label "$LABEL_OTHER"
	fi

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