#!/bin/bash

# Exit on command errors and treat unset variables as an error
set -eu

# Retrieve app id
app=$YNH_APP_INSTANCE_NAME

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

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

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

# 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."

# Create tmp directory and fetch new app inside
TMPDIR=$(ynh_mkdir_tmp)
extract_baikal "$TMPDIR"

# Get Specific folder from current installation
# FIXME: config.php and config.system.php are not updated with possible
# new or changed configurations
rm -rf "${TMPDIR}/Specific/*"
sudo cp -r "${DESTDIR}/Specific/"{config.php,config.system.php} "$TMPDIR/Specific"
sudo chown -hR "${USER}" "${TMPDIR}/Specific"

# Run Baikal upgrade from tmp directory
cp -r ../sources/bin "$TMPDIR"
php "${TMPDIR}/bin/upgrade.sh" \
  || echo "The Baïkal upgrade failed, you should try to go to " \
        "https://${domain}${path}/admin/install"

# Install new app and set permissions
if ! id -u $app > /dev/null 2>&1 ; then
  sudo useradd -c "$app system account" \
    -d /var/www/$app --system --user-group $app --shell /usr/sbin/nologin \
    || ynh_die "Unable to create $app system account"
fi
sudo rm -rf "$DESTDIR"
sudo mv "$TMPDIR" "$DESTDIR"
sudo chown -hR root: "$DESTDIR"
sudo chown $app:root "$DESTDIR/Specific/"{config.php,config.system.php}
sudo chmod 640 "$DESTDIR/Specific/"{config.php,config.system.php}

# Cleanup old baikal-admin sessions
# since we may have changed owner of the session file
sudo grep -lr "CSRF_TOKEN|s:" /var/lib/php5/sessions | xargs sudo rm

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

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

# Set SSOwat rules
ynh_app_setting_set "$app" skipped_uris "/"
ynh_app_setting_set "$app" protected_uris "/admin/"

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