#!/bin/bash

set -eu

# Get multi-instances specific variables
app=$YNH_APP_INSTANCE_NAME

# Load common variables and helpers
. ./_common.sh

# Set app specific variables
dbname=$app
dbuser=$app

# Source app helpers
. /usr/share/yunohost/helpers

# Retrieve app settings
domain=$(ynh_app_setting_get $app domain)
path=$(ynh_app_setting_get $app path)
path=${path%/}
dbpass=$(ynh_app_setting_get $app mysqlpwd)

# Check destination directory
DESTDIR="/var/www/$app"
[[ ! -d $DESTDIR ]] && ynh_die \
"The destination directory '$DESTDIR' does not exist.\
 The app is not correctly installed, you should remove it first."

# Check app's data directory
DATADIR="/home/yunohost.app/${app}/data"
[[ ! -d $DATADIR ]] && ynh_die \
"The data directory '$DATADIR' does not exist.\
 The app is not correctly installed, you should remove it first."

# Upgrade dependencies
ynh_package_install_from_equivs ../conf/${DEPS_PKG_NAME}.control \
  || ynh_die "Unable to upgrade dependencies"

# Copy and set nginx configuration
nginx_conf="/etc/nginx/conf.d/${domain}.d/${app}.conf"
sed -i "s@#APP#@${app}@g"          ../conf/nginx.conf
sed -i "s@#PATH#@${path}@g"        ../conf/nginx.conf
sed -i "s@#LOCATION#@${path:-/}@g" ../conf/nginx.conf
sed -i "s@#DESTDIR#@${DESTDIR}@g"  ../conf/nginx.conf
sudo cp ../conf/nginx.conf "$nginx_conf"

# Copy and set php-fpm configuration
phpfpm_conf="/etc/php5/fpm/pool.d/${app}.conf"
sed -i "s@#USER#@${app}@g"         ../conf/php-fpm.conf
sed -i "s@#GROUP#@${app}@g"        ../conf/php-fpm.conf
sed -i "s@#POOLNAME#@${app}@g"     ../conf/php-fpm.conf
sed -i "s@#DESTDIR#@${DESTDIR}/@g" ../conf/php-fpm.conf
sudo cp ../conf/php-fpm.conf "$phpfpm_conf"
sudo chown root: $phpfpm_conf
sudo chmod 644 $phpfpm_conf

# Set system group in hooks
sed -i "s@#GROUP#@${app}@g" ../hooks/post_user_create

# occ helper for the current installation
_exec_occ() {
  exec_occ "$DESTDIR" "$app" $@
}

# Retrieve new ownCloud sources in a temporary directory
TMPDIR=$(ynh_mkdir_tmp)
extract_owncloud "$TMPDIR"

# Copy ownCloud configuration file
oc_conf="${DESTDIR}/config.json"
sed -i "s@#DOMAIN#@${domain}@g" ../conf/config.json
sed -i "s@#DATADIR#@${DATADIR}@g" ../conf/config.json
sudo cp ../conf/config.json "${TMPDIR}/config.json"

# Copy configuration for external storage plugin
sudo cp ../conf/mount.json "$DATADIR"

# Enable maintenance mode
_exec_occ maintenance:mode --on

# Copy config and 3rd party applications from current directory
sudo cp -a "${DESTDIR}/config/config.php" "${TMPDIR}/config/config.php"
for a in $(sudo ls "${DESTDIR}/apps"); do
  [[ ! -d "${TMPDIR}/apps/$a" ]] \
    && sudo cp -a "${DESTDIR}/apps/$a" "${TMPDIR}/apps/$a"
done

# Rename existing app directory and move new one
sudo rm -rf "${DESTDIR}"
sudo mv "$TMPDIR" "$DESTDIR"

# Set app folders ownership
sudo chown -R $app: "$DESTDIR" "$DATADIR"

# Upgrade ownCloud (SUCCESS = 0, UP_TO_DATE = 3)
# TODO: Restore old directory in case of failure?
_exec_occ maintenance:mode --off
_exec_occ upgrade \
  || ([[ $? -eq 3 ]] || ynh_die "Unable to upgrade ownCloud")

# Enable plugins and set ownCloud configuration
_exec_occ app:enable user_ldap
_exec_occ config:import "$oc_conf"
sudo rm -f "$oc_conf"

# Enable External Storage and create local mount as needed
_exec_occ app:enable files_external
_exec_occ files_external:list --output=json \
    | grep -q '"storage":"\\\\OC\\\\Files\\\\Storage\\\\Local"' \
  || _exec_occ files_external:create \
      'Home' 'local' 'null::null' -c 'datadir=/home/$user'

# Add dynamic logout URL to the config
# TODO: if changes are made to this section, replace it with new one.
_exec_occ config:system:get logout_url >/dev/null 2>&1 \
  || sudo su -c "echo \"
//-YunoHost-
// set logout_url according to main domain
\\\$main_domain = exec('cat /etc/yunohost/current_host');
\\\$CONFIG['logout_url'] = 'https://'.\\\$main_domain.'/yunohost/sso/?action=logout';
//-YunoHost-
\" >> ${DESTDIR}/config/config.php" -- $app

# Iterate over users to extend their home folder permissions - for the external
# storage plugin usage - and create relevant ownCloud directories
for u in $(ynh_user_list); do
  sudo mkdir -p "${DATADIR}/${u}"
  sudo setfacl -m g:$app:rwx "/home/$u" || true
done

# Fix app ownerships & permissions
sudo find ${DESTDIR}/ -type f -print0 | sudo xargs -0 chmod 0644
sudo find ${DESTDIR}/ -type d -print0 | sudo xargs -0 chmod 0755
sudo find ${DATADIR}/ -type f -print0 | sudo xargs -0 chmod 0640
sudo find ${DATADIR}/ -type d -print0 | sudo xargs -0 chmod 0750
sudo chmod 640 "${DESTDIR}/config/config.php"
sudo chmod 755 /home/yunohost.app

# Set SSOwat rules
ynh_app_setting_set "$app" unprotected_uris "/remote.php"
ynh_app_setting_set "$app" skipped_uris "/.well-known"

# Reload services
sudo service php5-fpm restart || true
sudo service nginx reload || true

# Warn about possible disabled apps
echo "Note that if you've installed some third-parties ownCloud applications, \
they are probably disabled and you'll have to manually upgrade them."