2 files changed, 156 insertions, 0 deletions
diff --git a/build/init/Dockerfile b/build/init/Dockerfile
new file mode 100644
index 0000000..2b3d770
--- /dev/null
+++ b/build/init/Dockerfile
@@ -0,0 +1,5 @@
+FROM alpine:3.19
+RUN apk add --no-cache postgresql16-client tini
+COPY ./init /usr/local/bin/init
+ENTRYPOINT ["/sbin/tini", "--"]
+CMD ["/usr/local/bin/init"]
diff --git a/build/init/init b/build/init/init
new file mode 100755
index 0000000..c64f139
--- /dev/null
+++ b/build/init/init
@@ -0,0 +1,151 @@
+#!/bin/sh
+
+step() {
+	printf '\x1b[34;1m>> %s\x1b[0m\n' "$*"
+}
+
+error() {
+	printf '\x1b[31;1merror: \x1b[0m%s\n' "$*"
+}
+
+export PGPASSWORD=$POSTGRES_PASSWORD
+
+psql() {
+	/usr/bin/psql \
+		-h db \
+		-p 5432 \
+		-d $POSTGRES_DB \
+		-U $POSTGRES_USER \
+		"$@"
+}
+
+pg_isready() {
+	/usr/bin/pg_isready \
+		-h db \
+		-p 5432 \
+		-d $POSTGRES_DB \
+		-U $POSTGRES_USER \
+		"$@"
+}
+
+curr_revision() {
+	psql -qtAX -f /db/rev.sql;
+}
+
+wait_until_ready() {
+	step 'Checking if the database is ready...';
+	while true; do
+		pg_isready;
+		code=$?;
+		if [ $code -eq 0 ]; then
+			break;
+		fi
+		sleep 3;
+	done
+}
+
+run_migrations() {
+	i="$1"
+	while true; do
+		name=$(printf "%04d" "$i");
+		file="/db/migrations/$name.sql"
+
+		if [ -f $file ]; then
+			psql -f $file 2> /errors
+			errors=$(cat /errors | grep 'ERROR' | wc -l)
+			if [ "$errors" -eq 0 ]; then
+				i=$((i+1));
+				continue;
+			else
+				error "An error occoured during a migration (rev $name)"
+				cat /errors | grep -v 'current transaction is aborted';
+				error "Aborting migrations, fix file(s) then restart process."
+				return 1;
+			fi
+		else
+			return 0;
+		fi
+	done
+}
+
+init_api() {
+	psql -f /db/rest/rest.sql 2> /errors;
+	errors=$(cat /errors | grep 'ERROR' | wc -l)
+	if [ "$errors" -eq 0 ]; then
+		return 0;
+	else
+		error "An error occoured during api initialization"
+		cat /errors | grep -v 'current transaction is aborted';
+		error "Aborting api initialization, fix file(s) then restart process."
+		return 1;
+	fi
+}
+
+update_jwt() {
+	psql -c "UPDATE sys.database_info SET jwt_secret = '$JWT_SECRET' WHERE name = current_database();"
+	errors=$(cat /errors | grep 'ERROR' | wc -l)
+	if [ "$errors" -eq 0 ]; then
+		return 0;
+	else
+		return 1;
+	fi
+}
+
+load_ext() {
+	psql -qtAX -f /db/ext.sql;
+}
+
+init () {
+	# reomve ready status
+	# so php ignores requests
+	rm -fr /status/ready
+
+	step 'Waiting for database';
+	# make sure the database is running
+	# before we run any requests
+	wait_until_ready;
+	step 'Database ready';
+
+	step 'Loading extensions';
+	# Make sure extensions are loaded
+	load_ext;
+
+	step 'Peforming migrations';
+	# get the current revision
+	REV=$(curr_revision);
+	step "Database at revision: $REV"
+	# run each migration that is
+	# higher than our current revision
+	run_migrations "$REV"
+	CODE=$?;
+
+	if [ $CODE -ne 0 ]; then
+		return $CODE;
+	fi
+
+	step 'Initalizing the api';
+	# reinit the api schema for
+	# postgrest
+	init_api;
+	CODE=$?;
+
+	if [ $CODE -ne 0 ]; then
+		return $CODE;
+	fi
+
+	step 'Updating JWT secret';
+	# make sure postgres has the corrent
+	# jwt secret
+	update_jwt;
+	CODE=$?;
+
+	if [ $CODE -ne 0 ]; then
+		return $CODE;
+	fi
+
+	step 'Database is initialized'
+	# database is ready
+	touch /status/ready
+}
+
+init