#!/bin/bash

# Exit on command errors and treat unset variables as an error
set -eu
#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

source _common.sh
source /usr/share/yunohost/helpers

#=================================================
# LOAD SETTINGS
#=================================================
# Set app specific variables
app=$YNH_APP_INSTANCE_NAME

# 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."

# Retrieve arguments
domain=$(ynh_app_setting_get "$app" domain)
path_url=$(ynh_app_setting_get "$app" path_url)
# Compatibility with previous version
if [ -z "$path_url" ] ; then
  path_url=$(ynh_app_setting_get "$app" path)
  ynh_app_setting_set $app path_url "$path_url"
fi
path_url=$(ynh_normalize_url_path $path_url)
db_pwd=$(ynh_app_setting_get "$app" mysqlpwd)
deskey=$(ynh_app_setting_get "$app" deskey)
final_path=$(ynh_app_setting_get "$app" final_path)
# Compatibility with previous version
if [ -z "$final_path" ] ; then
  final_path="/var/www/$app"
  ynh_app_setting_set $app final_path "$final_path"
fi

db_name=$(ynh_app_setting_get "$app" db_name)
# Compatibility with previous version
if [ -z "$db_name" ] ; then
  db_name=$app
  ynh_app_setting_set "$app" db_name "$db_name"
fi
db_user="$db_name"

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

# Use prior backup and restore on error only if backup feature
# exists on installed instance
if [ -f "/etc/yunohost/apps/$app/scripts/backup" ] ; then
  ynh_backup_before_upgrade # Backup the current version of the app
  ynh_clean_setup () {
      ynh_backup_after_failed_upgrade
  }
  ynh_abort_if_errors	# Stop script if an error is detected
fi

#=================================================
# INSTALL DEPENDENCIES
#=================================================

ynh_install_app_dependencies "$PKG_DEPENDENCIES"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

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

#=================================================
# CREATE DEDICATED USER
#=================================================

ynh_system_user_create $app # Create dedicated user if not existing

#=================================================
# SPECIFIC SETUP
#=================================================

# Copy and set Wallabag dist configuration
wb_conf="${TMPDIR}/app/config/parameters.yml"
cp ${TMPDIR}/app/config/parameters.yml.dist $wb_conf

ynh_replace_string "fosuser_registration: true" "fosuser_registration: false" "$wb_conf"
ynh_replace_string "database_name: wallabag" "database_name:  ${db_name}" "$wb_conf"
ynh_replace_string "database_user: root" "database_user: ${db_user}" "$wb_conf"
ynh_replace_string "database_password: ~" "database_password: ${db_pwd}" "$wb_conf"
ynh_replace_string "database_table_prefix: wallabag_" "database_table_prefix: null" "$wb_conf"
ynh_replace_string "secret: ovmpmAWXRCabNlMgzlzFXDYmCFfzGv" "secret: ${deskey}" "$wb_conf"
ynh_replace_string "domain_name: https://your-wallabag-url-instance.com" "domain_name: https://$domain$path_url" "$wb_conf"

# Replace files and set permissions
ynh_secure_remove "${final_path}/var/cache"
mkdir "${final_path}/var/cache"
cp -a $TMPDIR/. "${final_path}"
chown -R $app: "${final_path}"
chmod 755 $final_path

# Upgrade database and clear the cache
exec_console $app "${final_path}" doctrine:migrations:migrate
exec_console $app "${final_path}" cache:clear

# Configure Wallabag instance URL
ynh_mysql_connect_as "$db_name" "$db_pwd" "$db_user"  <<< "UPDATE craue_config_setting SET value = 'https://$domain$path_url' WHERE name = 'wallabag_url'"

# Set-up fail2ban
# Create the log file is not already existing
if [ ! -f "$final_path/var/logs/prod.log" ]
then
  mkdir -p "$final_path/var/logs/"
  touch "$final_path/var/logs/prod.log"
  chown $app: "$final_path/var/logs/prod.log"
fi
# Add fail2ban config
ynh_add_fail2ban_config --logpath="$final_path/var/logs/prod.log" --failregex='app.ERROR: Authentication failure for user "([\w]+)?", from IP "<HOST>"' --max_retry=5 # same as install config

#=================================================
# NGINX CONFIGURATION
#=================================================

ynh_add_nginx_config
if [ "$path_url" = "/" ]
then
  # Replace "//" location (due to nginx template)
  # Prevent from replacing in "http://" expressions by excluding ":" as preceding character
  sed --in-place "s@\([^:]\)//@\1/@g" /etc/nginx/conf.d/$domain.d/$app.conf
else
  # Move prefix comment #for-subdir at end of lines
  sed --in-place "s/#for-subdir\(.*\)/\1 #for-subdir/g" /etc/nginx/conf.d/$domain.d/$app.conf
fi
ynh_store_file_checksum "/etc/nginx/conf.d/$domain.d/$app.conf"

# Copy and set php-fpm configuration
ynh_add_fpm_config

# Set SSOwat rules
ynh_app_setting_set "$app" unprotected_uris "/"

#=================================================
# RELOAD NGINX
#=================================================
systemctl restart php5-fpm
systemctl reload nginx