#!/usr/bin/env bash
# Deploy HEAD with podman and ansible on emily. Flags: --prune keeps three old
# images, --force skips the guards. The tree must be clean and HEAD pushed.
set -euo pipefail
cd "$(dirname "${BASH_SOURCE[0]}")"

git push

FORCE=false
PRUNE=false
for arg in "$@"; do
	case "$arg" in
	--force) FORCE=true ;;
	--prune) PRUNE=true ;;
	*)
		echo "Usage: $0 [--force] [--prune]" >&2
		exit 1
		;;
	esac
done

if [ "$FORCE" != true ]; then
	if [ -n "$(git status --porcelain --untracked-files=no)" ]; then
		echo "x tracked files modified, commit or stash first (or --force)" >&2
		exit 1
	fi
	git fetch origin --quiet
	if [ "$(git rev-parse HEAD)" != "$(git rev-parse origin/main)" ]; then
		echo "x HEAD != origin/main, push or pull first (or --force)" >&2
		exit 1
	fi
fi

git pull --ff-only
TAG=$(git rev-parse --short HEAD)
echo "==> deploying commit $TAG"
make build-production COMMIT="$TAG"

if [ "$PRUNE" = true ]; then
	PRUNE_FLAG="-e hops_image_prune=true"
else
	PRUNE_FLAG=""
fi

cd ansible
# shellcheck disable=SC2086
ansible-playbook playbook.yml -e "image_tag=$TAG" $PRUNE_FLAG