#!/bin/sh
# Configure cast01 as MariaDB GTID primary. Idempotent-ish.
set -eu
SHARED=/shared/cluster
CREDS="$SHARED/credentials.txt"
REPL_USER="$(awk '/^\[mariadb_replication\]/{f=1;next} /^\[/{f=0} f&&/^user=/{print substr($0,6); exit}' "$CREDS")"
REPL_PASS="$(awk '/^\[mariadb_replication\]/{f=1;next} /^\[/{f=0} f&&/^password=/{print substr($0,10); exit}' "$CREDS")"
APP_USER="$(awk '/^\[mariadb_app\]/{f=1;next} /^\[/{f=0} f&&/^user=/{print substr($0,6); exit}' "$CREDS")"
APP_PASS="$(awk '/^\[mariadb_app\]/{f=1;next} /^\[/{f=0} f&&/^password=/{print substr($0,10); exit}' "$CREDS")"

[ "$(hostname -s)" = cast01 ] || { echo "run on cast01 only"; exit 1; }

grep -q '^skip-networking' /etc/my.cnf.d/mariadb-server.cnf && \
  sed -i 's/^skip-networking/#skip-networking/' /etc/my.cnf.d/mariadb-server.cnf

install -D -m 644 "$SHARED/mariadb/primary.cnf" /etc/my.cnf.d/lab-cluster-primary.cnf
rc-update add mariadb default 2>/dev/null || true
rc-service mariadb restart

mariadb -u root <<SQL
CREATE USER IF NOT EXISTS '${REPL_USER}'@'10.7.16.%' IDENTIFIED BY '${REPL_PASS}';
GRANT REPLICATION SLAVE, REPLICATION CLIENT, RELOAD, LOCK TABLES, SELECT, SHOW VIEW, EVENT, TRIGGER ON *.* TO '${REPL_USER}'@'10.7.16.%';
CREATE USER IF NOT EXISTS '${APP_USER}'@'10.7.16.%' IDENTIFIED BY '${APP_PASS}';
CREATE USER IF NOT EXISTS '${APP_USER}'@'localhost' IDENTIFIED BY '${APP_PASS}';
GRANT ALL PRIVILEGES ON androidcast_crashes.* TO '${APP_USER}'@'10.7.16.%';
GRANT ALL PRIVILEGES ON androidcast_crashes.* TO '${APP_USER}'@'localhost';
GRANT ALL PRIVILEGES ON url_shortener.* TO '${APP_USER}'@'10.7.16.%';
GRANT ALL PRIVILEGES ON url_shortener.* TO '${APP_USER}'@'localhost';
FLUSH PRIVILEGES;
SQL

echo "primary_ok server_id=$(mariadb -u root -N -e 'SELECT @@server_id')"
echo "gtid=$(mariadb -u root -N -e 'SELECT @@gtid_current_pos')"