#!/bin/bash -eu
#
# Copyright 2023 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

source /opt/c2d/c2d-utils || exit 1

readonly mysql_root_password="$(get_attribute_value "mysql-root-password")"
readonly wordpress_admin_username="admin"
readonly wordpress_admin_email="$(get_attribute_value "wordpress-admin-email")"
readonly wordpress_admin_password="$(get_attribute_value "wordpress-admin-password")"
readonly wordpress_mysql_password="$(get_attribute_value "wordpress-mysql-password")"
readonly wordpress_enable_https="$(get_attribute_value "wordpress-enable-https" \
  | tr '[:upper:]' '[:lower:]')"

# Stop Apache while Wordpress is not ready
systemctl stop apache2

mysql -u root -p"${mysql_root_password}" -e "CREATE USER 'wordpress'@'localhost' IDENTIFIED WITH mysql_native_password BY '${wordpress_mysql_password}';"
echo "Created wordpress user."
mysql -u root -p"${mysql_root_password}" -e "GRANT ALL PRIVILEGES ON wordpress.* TO 'wordpress'@'localhost';"
echo "Grant privileges to wordpress user."
mysql -u root -p"${mysql_root_password}" -e "FLUSH PRIVILEGES"
echo "Flushed privileges."

sudo -u www-data wp config create \
  --dbname=wordpress \
  --dbuser=wordpress \
  --dbpass="${wordpress_mysql_password}" \
  --path=/var/www/html/ \
  --force

# Run the CLI installer for WordPress
declare -a args=(
  --title="WordPress on Google Compute Engine" \
  --admin_user="${wordpress_admin_username}" \
  --admin_password="${wordpress_admin_password}" \
  --admin_email="${wordpress_admin_email}" \
  --path=/var/www/html/ \
  --skip-email
)

if has_external_ip; then
  args+=(--url="$(get_external_ip)")
else
  args+=(--url="$(get_internal_ip)")
fi

sudo -u www-data wp core install "${args[@]}"

cd /var/www/html/
sudo -u www-data wp cache flush

# If https is enabled, apply the configuration
if [[ "${wordpress_enable_https}" == "true" ]]; then
  a2dissite wordpress-http
  a2ensite wordpress-https
fi

# Start Apache after setup
systemctl start apache2