CI: deploy the web UI to a self-hosted runner (#315) #1

	name: Deploy web UI

	# Manual run, or automatic on push to the deploy branch.
	on:
	workflow_dispatch:
	push:
	branches: [main]

	concurrency:
	group: deploy-web
	cancel-in-progress: false

	jobs:
	deploy:
	runs-on: [self-hosted]
	env:
	DEPLOY_BRANCH: main
	SERVICE: coscientist-web
	HEALTH_URL: http://127.0.0.1:7000/
	steps:
	- name: Set up environment
	# A job-level env: block cannot expand $HOME or run id(1), so resolve the
	# deploy path, put uv on PATH, and set the user-bus vars here. These land
	# in the environment of every later step.
	run: \|
	set -euo pipefail
	{
	echo "DEPLOY_DIR=$HOME/cosci/CoScientist"
	echo "XDG_RUNTIME_DIR=/run/user/$(id -u)"
	echo "DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/$(id -u)/bus"
	} >> "$GITHUB_ENV"
	echo "$HOME/.local/bin" >> "$GITHUB_PATH"

	- name: Update code in the deploy dir
	run: \|
	set -euo pipefail
	cd "$DEPLOY_DIR"
	git fetch --prune origin
	git checkout "$DEPLOY_BRANCH"
	git reset --hard "origin/$DEPLOY_BRANCH"
	git rev-parse --short HEAD

	- name: Sync dependencies (locked)
	run: \|
	set -euo pipefail
	cd "$DEPLOY_DIR"
	uv sync --frozen

	- name: Link the server secrets
	run: ln -sfn "$HOME/.config/coscientist/.env" "$DEPLOY_DIR/.env"

	- name: Restart the service
	run: systemctl --user restart "$SERVICE"

	- name: Health check
	run: \|
	set -euo pipefail
	for i in $(seq 1 30); do
	if curl -fsS "$HEALTH_URL" >/dev/null; then
	echo "healthy after ${i} tries"
	exit 0
	fi
	sleep 2
	done
	echo "service did not answer on $HEALTH_URL"
	systemctl --user status "$SERVICE" --no-pager \|\| true
	journalctl --user -u "$SERVICE" -n 80 --no-pager \|\| true
	exit 1

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