#!/bin/bash

set -eu

# Retrieve arguments
domain=$1
path=${2%/}
admin=$3
user_home=$4

# Load common variables
source ./_common.sh

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

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

# Comments of this code was deleted, because it were in french...
if [ "${path:0:1}" != "/" ] && [ ${#path} -gt 0 ]; then
       path="/$path"
fi
if [ "${path:${#path}-1}" == "/" ] && [ ${#path} -gt 1 ]; then
       path="${path:0:${#path}-1}"
fi

# TODO: Check domain/path availability with app helper
sudo yunohost app checkurl "${domain}${path}" -a "$app" \
  || ynh_die "The path ${domain}${path} is not available for app installation."

# Check user parameter
ynh_user_exists "$admin" \
  || ynh_die "The chosen admin user does not exist."
ynh_app_setting_set $app admin_user $admin

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

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

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

# Generate random password
dbpass=$(ynh_string_random)

# Initialize database
ynh_mysql_create_db "$dbname" "$dbuser" "$dbpass"

# 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"

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

# Create app folders
sudo mkdir -p "$DESTDIR" "$DATADIR"

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

# 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
# do not serve .well-known if it's already served on the domain
if is_url_handled "https://${domain}/.well-known/caldav" ; then
  sed -ri '/^location = \/\.well\-known\/(caldav|carddav) \{/,/\}/d' \
      ../conf/nginx.conf
fi
sudo cp ../conf/nginx.conf "$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

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

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

# Retrieve Nextcloud sources
VERSION=$LAST_VERSION
NEXTCLOUD_SOURCE_SHA256=$(grep "NEXTCLOUD_SOURCE_SHA256=" "upgrade.d/upgrade.last.sh" | cut -d= -f2)
extract_nextcloud "$DESTDIR" "$app"

# Install Nextcloud using a temporary admin user
_exec_occ maintenance:install \
    --database "mysql" --database-name "$dbname" \
    --database-user "$dbuser" --database-pass "$dbpass" \
    --admin-user "admin" --admin-pass "$(ynh_string_random 6)" \
    --data-dir "$DATADIR" \
  || ynh_die "Unable to install Nextcloud"

# Ensure that UpdateNotification app is disabled
_exec_occ app:disable updatenotification

# Enable plugins and set Nextcloud configuration
_exec_occ app:enable user_ldap
_exec_occ ldap:create-empty-config
_exec_occ config:import "$nc_conf"
sudo rm -f "$nc_conf"

# Check LDAP configuratio to see if everything worked well
_exec_occ ldap:test-config \'\' \
  || ynh_die "An error occured during LDAP configuration"

# Enable External Storage and create local mount to home folder
if [[ $user_home -eq 1 ]]; then
  _exec_occ app:enable files_external
  create_home_external_storage '_exec_occ'
fi

# Add dynamic logout URL to the config
_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

# Set the user as admin and delete admin user
ynh_mysql_connect_as "$dbuser" "$dbpass" "$dbname" \
    <<< "INSERT INTO oc_group_user VALUES ('admin','$admin');"
_exec_occ user:delete admin

# 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

# Store app settings
ynh_app_setting_set "$app" user_home "$user_home"
ynh_app_setting_set "$app" mysqlpwd "$dbpass"

# Set SSOwat rules
ynh_app_setting_set "$app" unprotected_uris "/"
ynh_app_setting_set "$app" skipped_regex \
    "$(sed 's/[\.\-]/\%&/g' <<< $domain)/%.well%-known/.*"

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

# Add cron job
cron_path="/etc/cron.d/$app"
sed -i "s@#USER#@${app}@g"        ../conf/nextcloud.cron
sed -i "s@#DESTDIR#@${DESTDIR}@g" ../conf/nextcloud.cron
sudo cp ../conf/nextcloud.cron "$cron_path"
sudo chmod 644 "$cron_path"
_exec_occ background:cron