#!/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=$(ynh_normalize_url_path "$(ynh_app_setting_get "$app" path_url)")
final_path=$(ynh_app_setting_get "$app" final_path)
is_public=$(ynh_app_setting_get "$app" is_public)
port=$(ynh_app_setting_get "$app" port)

#=================================================
# 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_restore_upgradebackup
  }
  ynh_abort_if_errors	# Stop script if an error is detected
fi

#=================================================
# INSTALL NODEJS
#=================================================
ynh_install_nodejs $nodejs_version

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

ynh_system_user_create $app

#=================================================
# SPECIFIC SETUP
#=================================================
# HANDLE LOG FILES AND LOGROTATE
#=================================================

# Setup logrotate
ynh_use_logrotate /var/log/${app}/*.log --non-append

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

final_path=/var/www/$app
ynh_app_setting_set $app final_path $final_path
ynh_setup_source $final_path

# Set files ownership during installation
sudo chown $app: $final_path -R
sudo chmod 755 $final_path -R

#=================================================
# Modify Nginx configuration file and copy it to Nginx conf directory
#=================================================

ynh_add_nginx_config

#=================================================
# ADD SYSTEMD SERVICE
#=================================================

ynh_replace_string "__NODE__" "$nodejs_path" "../conf/systemd.service"
ynh_replace_string "__NODEJS__" "$nodejs_version" "../conf/systemd.service"
ynh_replace_string "__ENV_PATH__" "$PATH" "../conf/systemd.service"
ynh_add_systemd_config


#=================================================
# INSTALL CRYPTPAD
#=================================================

script_dir="$PWD"
pushd "$final_path"
chown -R $app: $final_path
npm install
npm install -g bower
exec_login_as $app cd $final_path && env PATH=$PATH bower install
popd

#=================================================
# CONFIGURE SERVER.JS	
#=================================================

# Backup configuration file if changed
ynh_backup_if_checksum_is_different "$final_path/config.js"

# Copy default configuration file
sudo mv "$final_path/config.example.js" "$final_path/config.js"

# Set service port
ynh_replace_string "httpPort: 3000" "httpPort: $port" "$final_path/config.js"
# Tune CSP to allow for YunoHost tile
ynh_replace_string "\"script-src 'self'\"" "\"script-src 'self' 'unsafe-eval'\"" "$final_path/config.js"
# Remove donate button
ynh_replace_string "removeDonateButton: false" "removeDonateButton: true" "$final_path/config.js"
# Disable analytics unsolicited communications
ynh_replace_string "adminEmail: 'i.did.not.read.my.config@cryptpad.fr'" "adminEmail: false" "$final_path/config.js"

# Store file checksum to detected user modifications on upgrade
ynh_store_file_checksum "$final_path/config.js"

#=================================================
# SET FILES OWNERSHIP
#=================================================

sudo chown -R root: $final_path
sudo chown -R $app: $final_path/datastore $final_path/pins $final_path/blob $final_path/blobstage

#=================================================
# INSTALL MODULES FOR CRYPTPAD
#=================================================

#npm install cryptpad-level-store;

#=================================================
# ENABLE SERVICE IN ADMIN PANEL
#=================================================

# Ajoute le service au monitoring de Yunohost.
sudo yunohost service add $app --log "/var/log/$app/$app.log"

#=================================================
# START CRYPTPAD IN BACKGROUND
#=================================================

sudo systemctl start $app

#=================================================
# SETUP SSOWAT
#=================================================

if [ $is_public -eq 1 ];
then
  ynh_app_setting_set "$app" unprotected_uris "/"
fi

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