#!/usr/bin/env bash

if [ -z "$PHPVER" ]; then
  PHPVER="83";
fi

if [ -z "$environment" ]; then
  environment="PROD"
fi

# Default to FPM-only role
export CONTAINER_ROLE="fpm_only"
export FPM_LISTEN=${FPM_LISTEN:-9000}

adduser -u $uid $user

# Root never follows customer symlinks under /home/$user: see safe-paths.sh.
source /scripts/safe-paths.sh
secure_home

user_mkdir /home/$user/public_html /home/$user/logs/php-fpm
# Create the pool's error_log (php_admin_value[error_log] in
# create-php-config.sh) AS THE CUSTOMER, before php-fpm starts. It used to be
# `touch`ed as root at the very end, after the chown -R, so on a site's first
# start the pool (customer uid) could not open it and PHP errors fell back to
# FastCGI stderr -> shared-httpd's error log until the next restart's chown -R
# fixed the owner. user_touch never writes or chowns through a symlink.
user_touch /home/$user/logs/php-fpm/error.log

ln -sf /home/$user/logs/php-fpm /var/log/php-fpm

source /scripts/detect-memory.sh
echo "Container memory: ${CONTAINER_MEMORY_MB}MB | PHP-FPM pm=${PHP_FPM_PM} max_children=${PHP_FPM_MAX_CHILDREN} | Listen=${FPM_LISTEN}"

/scripts/create-php-config.sh

mkdir -p /run/php-fpm/
/usr/sbin/php-fpm -y /etc/php-fpm.conf
# GNU chown -R defaults to -P: symlinks are lchown()ed, never followed.
chown -R $user:$user /home/$user
# Do NOT `chmod -R 755` the docroot here. /home/$user is the customer's
# bind-mounted site directory; a recursive 755 on every start made every file
# (wp-config.php included) world-readable AND executable, and reverted any
# tighter permissions the customer had set. Apache (shared-httpd, or the
# bundled httpd) runs as `apache`, not the customer, so it only needs to
# traverse directories to serve static files. Normalise that and nothing else:
# open the docroot itself, and add o+x to directories that lack it. Regular
# files are never touched, so execute is never added and wp-config.php is
# never loosened. Runs as the customer (safe-paths.sh) so a symlink can only
# reach what the customer already owns.
open_dir_traversal

if [[ $environment == 'DEV' ]]; then
  echo "Starting Dev Deployment (FPM-only mode)"
  user_mkdir /home/$user/_db_backups
  if ! command -v microdnf &> /dev/null; then
    echo "microdnf not found, installing with dnf..."
    dnf install -y microdnf && dnf clean all
  fi
  microdnf install -y MariaDB-server MariaDB-client memcached
  sed -r -i 's/session.save_path="memcache:11211/session.save_path="localhost:11211/' /etc/php.ini
  nohup mysqld -umysql &
  if [ ! -f /home/$user/mysql_creds ]; then
    echo "Give MySQL a chance to finish starting..."
    sleep 10
    mysql_user=$(tr -dc A-Za-z0-9 </dev/urandom | head -c 13 ; echo '')
    mysql_password=$(tr -dc A-Za-z0-9 </dev/urandom | head -c 18 ; echo '')
    mysql_db=$(tr -dc A-Za-z0-9 </dev/urandom | head -c 6 ; echo '')
    mysql -e "CREATE DATABASE devdb_"$mysql_db";"
    mysql -e "CREATE USER '"$mysql_user"'@'localhost' IDENTIFIED BY '"$mysql_password"';"
    mysql -e "GRANT ALL PRIVILEGES ON *.* TO '"$mysql_user"'@'localhost' WITH GRANT OPTION;"
    mysql -e "FLUSH PRIVILEGES;"
    # Written AS THE CUSTOMER (as_user tee), never by root through a customer path.
    drop_symlink /home/$user/crontab
    printf '%s\n' "# User crontab for $user" "*/15 * * * * /scripts/mysql-backup.sh $user devdb_$mysql_db" \
      | as_user tee /home/$user/crontab >/dev/null
    printf '%s\n' "MySQL User: $mysql_user" "MySQL Password: $mysql_password" "MySQL Database: devdb_$mysql_db" \
      | as_user tee /home/$user/mysql_creds
  fi
  /usr/bin/memcached -d -u $user
fi

if [[ $environment == 'PROD' ]]; then
    if [ -f /etc/php.d/50-memcached.ini ]; then
        sed -r -i 's/;session.save_path="localhost:11211/session.save_path="memcache:11211/' /etc/php.d/50-memcached.ini
    fi
fi

# Set up + load the user crontab, created and read as the customer
# (safe-paths.sh). Root reading/writing/chowning it followed symlinks.
load_user_crontab

/usr/sbin/crond

# Graceful shutdown. bash is PID 1 here, and PID 1 only receives signals it
# has a handler for, so without this trap `docker stop`'s SIGTERM was dropped:
# docker waited the full 10s and SIGKILLed php-fpm mid-request (exit 137).
# php-fpm QUIT = graceful (workers finish their current request), then crond.
source /scripts/stop-services.sh
TAIL_PID=""
shutdown() {
  trap - TERM INT
  echo "entrypoint: received stop signal, shutting down"
  stop_service php-fpm /run/php-fpm/php-fpm.pid QUIT 6 'php-fpm: master'
  stop_service crond /run/crond.pid TERM 1 '^/usr/sbin/crond'
  [ -n "$TAIL_PID" ] && kill "$TAIL_PID" 2>/dev/null
  exit 0
}
trap shutdown TERM INT

# Tail PHP-FPM logs to docker logs. Backgrounded + `wait` (instead of a
# foreground tail) so bash can run the trap as soon as a signal arrives.
tail -f /home/$user/logs/php-fpm/* &
TAIL_PID=$!
wait "$TAIL_PID"

exit 0