#!/bin/bash

set -eu

# Get multi-instances specific variables
app=$YNH_APP_INSTANCE_NAME

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

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

# Retrieve old app settings
domain=$(ynh_app_setting_get "$app" domain)
path=$(ynh_app_setting_get "$app" path)
dbpass=$(ynh_app_setting_get "$app" mysqlpwd)

# TODO: Check domain/path availability with app helper
# Temporarily conditioned, see https://dev.yunohost.org/issues/593
if [ ${#path} -gt 1 ]; then
  sudo yunohost app checkurl "${domain}${path}" -a "$app" \
    || ynh_die "The path ${domain}${path} is not available for app installation."
fi

# Check destination directory
DESTDIR="/var/www/$app"
[[ -d $DESTDIR ]] && ynh_die \
"The destination directory '$DESTDIR' already exists.\
 You should safely delete it before restoring this app."

# Define app's data directory
DATADIR="/home/yunohost.app/${app}/data"

# Check configuration files
nginx_conf="/etc/nginx/conf.d/${domain}.d/${app}.conf"
[[ -f $nginx_conf ]] && ynh_die \
"The NGINX configuration already exists at '${nginx_conf}'.
 You should safely delete it before restoring this app."
phpfpm_conf="/etc/php5/fpm/pool.d/${app}.conf"
[[ -f $phpfpm_conf ]] && ynh_die \
"The PHP FPM configuration already exists at '${phpfpm_conf}'.
 You should safely delete it before restoring this app."

# Install dependencies
ynh_package_install_from_equivs ./nextcloud-deps.control \
  || ynh_die "Unable to install dependencies"

# Create a system account for Nextcloud
sudo useradd -c "$app system account" \
    -d /var/lib/$app --system --user-group $app \
  || ynh_die "Unable to create $app system account"

# Restore the app files
sudo cp -a ./www "$DESTDIR"
sudo mkdir -p "$DATADIR"
if [ -d ./data ]	# Le dossier data est restauré seulement si il existe. Si le backup a été fait avec l'option backup_core_only, ce dossier n'a pas été sauvegardé.
then
	sudo cp -a ./data/. "$DATADIR"
fi
ynh_app_setting_delete $app backup_core_only	# Retire l'option backup_core_only du fichier settings.yml le cas échéant

# Create and restore the database
ynh_mysql_create_db "$dbname" "$dbuser" "$dbpass"
ynh_mysql_connect_as "$dbuser" "$dbpass" "$dbname" < ./db.sql

# Iterate over users to extend their home folder permissions - for the external
# storage plugin usage - and create relevant Nextcloud 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 chown -R $app: "$DESTDIR" "$DATADIR"
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

# Restore configuration files
sudo cp -a ./conf/nginx.conf   "$nginx_conf"
sudo cp -a ./conf/php-fpm.conf "$phpfpm_conf"

# Restore cron job
sudo cp -a ./conf/cron "/etc/cron.d/${app}"

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