#!/bin/bash

set -e
set -u

# Retrieve arguments
domain=$1
path=${2%/}
admin=$3
app=${!#}

# Load common variables
. ./_common.sh

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

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

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

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

# Check destination directory
DESTDIR="/var/www/$app"
[[ -d $DESTDIR ]] && die \
"The destination directory '$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 \
  || die "Unable to install dependencies"

# Generate random password
dbpass=$(ynh_string_random)
ynh_app_setting_set $app mysqlpwd $dbpass

# Initialize database
ynh_mysql_create_db $dbname $dbuser $dbpass

# Create a system account for ownCloud
sudo useradd -c "$app system account" \
    -d /var/lib/$app --system --user-group $app \
  || 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 ownCloud configuration file
oc_conf="${DESTDIR}/config.json"
sed -i "s@#DOMAIN#@${domain}@g" ../conf/config.json
sed -i "s@#DATADIR#@${DATADIR}@g" ../conf/config.json
sudo cp ../conf/config.json "$oc_conf"

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

# 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

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

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

# Retrieve ownCloud sources
extract_owncloud "$DESTDIR" "$app"

# Install ownCloud 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" \
  || die "Unable to install ownCloud"

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

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

# Enable External Storage and create local mount
_exec_occ app:enable files_external
_exec_occ files_external:create \
    'Home' 'local' 'null::null' -c 'datadir=/home/$user'

# 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 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 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

# 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