Fetch upstream #218

	name: Fetch upstream

	on:
	schedule:
	- cron: '30 8 * * 4' # run every week before release
	workflow_dispatch:

	jobs:
	update:
	runs-on: ubuntu-latest
	env:
	UPSTREAM_DIR: ./rime-cantonese-upstream
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Checkout Upstream
	uses: actions/checkout@v4
	with:
	repository: CanCLID/rime-cantonese-upstream
	path: ${{ env.UPSTREAM_DIR }}
	- name: Install Dependencies
	run: \|
	python -m pip install -U pip
	python -m pip install pytz
	- name: Rebuild Dictionary from Upstream
	run: \|
	UPSTREAM_TIME=$(git -C "$UPSTREAM_DIR" log -1 --format=%aI)
	python scripts/fetch_upstream.py "$UPSTREAM_DIR" "$UPSTREAM_TIME"
	git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
	git config user.name "github-actions[bot]"
	git config diff.notimestamp.textconv 'sed "/^version:/d"'
	echo "*.dict.yaml diff=notimestamp" > .gitattributes
	git add "*.dict.yaml"
	if [ -n "$(git diff --cached)" ]; then # Push to GitHub if contents changed. Don't use `--name-only` because this flag prevents the actual content from being computed by the command specified by textconv (same for `git status`).
	UPSTREAM_SHA=$(git -C "$UPSTREAM_DIR" rev-parse HEAD)
	git commit -m "Update from upstream https://github.com/CanCLID/rime-cantonese-upstream/commit/$UPSTREAM_SHA"
	git push origin main
	fi

Provide feedback