#!/bin/sh
set -eu


usage() {
	cat <<-'EOF'
		Usage: cicdd
	EOF
}


N=`nproc`

if [ ! -e "$CLONE" ]; then
	git clone "$REPO" "$CLONE"
fi

cd "$CLONE"
git fetch
git checkout "$VERSION"

MANIFEST_OPT=
if [ -f manifest.scm ]; then
	MANIFEST_OPT='-m manifest.scm'
fi
guix shell -Cv3 $MANIFEST_OPT -- make -j$N all check



NAME="$(basename "$PWD" .git)"
LOGS_DIR=/var/log/ci/"$NAME"/
TIMESTAMP="$(now)"
FILENAME="$TIMESTAMP-$SHA.log"
LOGFILE="$LOGS_DIR/$FILENAME"
mkdir -p "$LOGS_DIR"


info() {
	pre "$(color -c lightblueb 'CI')"
}



{
	cat <<-EOF | info
		Starting CI job at: $(now)
	EOF
	START="$(epoch)"

	duration() {
		if [ "$RUN_DURATION" -gt 60 ]; then
			cat <<-EOF
				$(yellow 'WARNING'): run took more than 1 minute! ($RUN_DURATION seconds)
			EOF
		else
			cat <<-EOF
				Run took $RUN_DURATION seconds.
			EOF
		fi
	}

	finish() {
		STATUS="$?"
		END="$(epoch)"
		RUN_DURATION=$((END - START))
		cat <<-EOF | info
			Finishing CI job at: $(now)
			Exit status was $STATUS
			Re-run with:
			  \$ $CMD
			$(duration)
		EOF

		NOTE="$(
			cat <<-EOF
				See CI logs with:
				  git notes --ref=refs/notes/ci-logs show $SHA
				  git notes --ref=refs/notes/ci-data show $SHA

				Exit status: $STATUS
				Duration: $RUN_DURATION
			EOF
		)"
		git notes --ref=refs/notes/ci-data add -f -m "$(
			cat <<-EOF
				status $STATUS
				sha $SHA
				filename $FILENAME
				duration $RUN_DURATION
				timestamp $TIMESTAMP
				to-prod $TO_PROD
				refname $REFNAME
			EOF
		)" "$SHA"
		git notes --ref=refs/notes/ci-logs add -f -F "$LOGFILE" "$SHA"
		git notes add -f -m "$NOTE" "$SHA"

		{
			printf 'Git CI HTML report for %s (%s) started.\n' "$NAME" "$SHA" >&2
			DIR="$(mkdtemp)"
			report -o "$DIR"
			sudo -u deployer rsync \
				--chmod=D775,F664         \
				--chown=deployer:deployer \
				--delete                  \
				-a                        \
				"$DIR"/ "$HTML_OUTDIR_CI"/
			rm -rf "$DIR"
			printf 'Git CI HTML report for %s (%s) finished.\n' "$NAME" "$SHA" >&2
		} 2>&1 | logger -i -p local0.warn -t git-ci 1>/dev/null 2>&1 &
	}
	trap finish EXIT

	unset GIT_DIR

	if [ "$REFNAME" = 'refs/heads/main' ] && [ "$SKIP_DEPLOY" = false ]; then
		cat <<-EOF | info
			In branch "main", running deploy for $SHA.
		EOF
		TO_PROD=true
		CMD="sudo reconfigure $SHA"
	else
		if [ "$SKIP_DEPLOY" = true ]; then
			cat <<-EOF | info
				"deploy.skip" option detected, skipping deploy for $SHA.
			EOF
		else
			cat <<-EOF | info
				Not on branch "main", skipping deploy for $SHA.
			EOF
		fi
		TO_PROD=false
		CMD="sudo reconfigure -n $SHA"
	fi
	$CMD
} 2>&1 | ts -s '%.s' | tee "$LOGFILE"