#!/usr/bin/env sh

# Required env variables
if [ -z "${DB_PASS}" ]; then
  echo "[ERROR] Mariadb database password must be set !"
  exit 1
fi

if [ -z "${FORUM_URL}" ]; then
  echo "[ERROR] Forum url must be set !"
  exit 1
fi

CACHE_DIR=/flarum/app/extensions/.cache
LIST_FILE=/flarum/app/extensions/list

# Set file config for nginx and php
sed -i "s/<FLARUM_PORT>/${FLARUM_PORT}/g" /etc/nginx/nginx.conf
sed -i "s/<UPLOAD_MAX_SIZE>/${UPLOAD_MAX_SIZE}/g" /etc/nginx/nginx.conf /etc/php7/php-fpm.conf
sed -i "s/<PHP_MEMORY_LIMIT>/${PHP_MEMORY_LIMIT}/g" /etc/php7/php-fpm.conf
sed -i "s/<OPCACHE_MEMORY_LIMIT>/${OPCACHE_MEMORY_LIMIT}/g" /etc/php7/conf.d/00_opcache.ini

# Set permissions for /flarum folder
echo "[INFO] Setting folder permissions"
for folder in /services /var/log /var/lib/nginx; do
  find ${folder} ! -user "${UID}" -exec chown -h "${UID}:${GID}" {} \+
  find ${folder} ! -group "${GID}" -exec chown -h "${UID}:${GID}" {} \+
done

find /flarum ! -user "${UID}" -exec chown "${UID}:${GID}" {} \+
find /flarum ! -group "${GID}" -exec chown "${UID}:${GID}" {} \+

# Set log output to STDOUT if wanted (LOG_TO_STDOUT=true)
if [ "${LOG_TO_STDOUT}" = true ]; then
  echo "[INFO] Logging to stdout activated"
  chmod o+w /dev/stdout
  sed -i "s/.*error_log.*$/error_log \/dev\/stdout warn;/" /etc/nginx/nginx.conf
  sed -i "s/.*error_log.*$/error_log = \/dev\/stdout/" /etc/php7/php-fpm.conf
fi

# Install additional php extensions
if [ -n "${PHP_EXTENSIONS}" ]; then
  for php_extension in ${PHP_EXTENSIONS}; do
    PACKAGES="php7-${php_extension} ${PACKAGES}"
  done
  echo "[INFO] Adding php extensions"
  apk add --no-progress --no-cache ${PACKAGES}
fi

cd /flarum/app

# Add github token authentication (eg. for privates extensions)
if [ "${GITHUB_TOKEN_AUTH}" != false ]; then
  echo "[INFO] Adding github token authentication"
  COMPOSER_CACHE_DIR="${CACHE_DIR}" su-exec "${UID}:${GID}" composer config github-oauth.github.com "${GITHUB_TOKEN_AUTH}"
fi

# Custom repositories (eg. for privates extensions)
if [ -f '/flarum/app/extensions/composer.repositories.txt' ]; then
  while read line; do
    repository="$(echo ${line} | cut -d '|' -f1)"
    json="$(echo ${line} | cut -d '|' -f2)"
    echo "[INFO] Adding ${repository} composer repository"
    COMPOSER_CACHE_DIR="${CACHE_DIR}" su-exec "${UID}:${GID}" composer config repositories."${repository}" --json "${json}"
  done < /flarum/app/extensions/composer.repositories.txt
fi

# Custom vhost flarum nginx
if [ ! -e '/etc/nginx/flarum/custom-vhost-flarum.conf' ]; then
  echo '# Example:
# fix for flagrow/sitemap (https://github.com/flagrow/sitemap)
# location = /sitemap.xml {
#   try_files $uri $uri/ /index.php?$query_string;
# }' > /etc/nginx/flarum/custom-vhost-flarum.conf
fi

# if installation was performed before
if [ -e '/flarum/app/public/assets/rev-manifest.json' ]; then
  echo "[INFO] Flarum already installed, init app..."

  sed -i -e "s|<DEBUG>|${DEBUG}|g" \
         -e "s|<DB_HOST>|${DB_HOST}|g" \
         -e "s|<DB_NAME>|${DB_NAME}|g" \
         -e "s|<DB_USER>|${DB_USER}|g" \
         -e "s|<DB_PASS>|${DB_PASS}|g" \
         -e "s|<DB_PREF>|${DB_PREF}|g" \
         -e "s|<DB_PORT>|${DB_PORT}|g" \
         -e "s|<FORUM_URL>|${FORUM_URL}|g" /flarum/app/config.php.sample

  cp -p /flarum/app/config.php.sample /flarum/app/config.php
  su-exec "${UID}:${GID}" php /flarum/app/flarum cache:clear

  # Download extra extensions installed with composer wrapup script
  if [ -s "${LIST_FILE}" ]; then
    echo "[INFO] Install extra bundled extensions"
    while read line; do
      extension="${extension}${line} "
    done < /flarum/app/extensions/list
    cmd="composer require ${extension}"
    eval "COMPOSER_CACHE_DIR=${CACHE_DIR} su-exec ${UID}:${GID} ${cmd}"
    echo "[INFO] Install extra bundled extensions: DONE"
  else
    echo "[INFO] No installed extensions"
  fi

  echo "[INFO] Flarum already installed, init app: DONE"
else
  # if no installation was performed before
  echo "[INFO] First launch, installation..."

  if [ -z "${FLARUM_ADMIN_USER}" ] || [ -z "${FLARUM_ADMIN_PASS}" ] || [ -z "${FLARUM_ADMIN_MAIL}" ]; then
    echo "[ERROR] User admin info of flarum must be set !"
    exit 1
  fi

  sed -i -e "s|<DEBUG>|${DEBUG}|g" \
         -e "s|<FORUM_URL>|${FORUM_URL}|g" \
         -e "s|<DB_HOST>|${DB_HOST}|g" \
         -e "s|<DB_NAME>|${DB_NAME}|g" \
         -e "s|<DB_USER>|${DB_USER}|g" \
         -e "s|<DB_PASS>|${DB_PASS}|g" \
         -e "s|<DB_PREF>|${DB_PREF}|g" \
         -e "s|<DB_PORT>|${DB_PORT}|g" \
         -e "s|<FLARUM_ADMIN_USER>|${FLARUM_ADMIN_USER}|g" \
         -e "s|<FLARUM_ADMIN_PASS>|${FLARUM_ADMIN_PASS}|g" \
         -e "s|<FLARUM_ADMIN_MAIL>|${FLARUM_ADMIN_MAIL}|g" \
         -e "s|<FLARUM_TITLE>|${FLARUM_TITLE}|g" /flarum/app/config.yml

  # Install flarum
  su-exec "${UID}:${GID}" php /flarum/app/flarum install --file=/flarum/app/config.yml
  echo "[INFO] End of flarum installation"
fi

echo "[INFO] End of startup script. Forum is starting."
exec su-exec "${UID}:${GID}" /bin/s6-svscan /services