#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

if [ ! -e _common.sh ]; then
	# Get the _common.sh file if it's not in the current directory
	cp ../settings/scripts/_common.sh ./_common.sh
	cp ../settings/scripts/psql.sh ./psql.sh
	chmod a+rx _common.sh psql.sh
fi

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


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

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# LOAD SETTINGS
#=================================================
ynh_print_info "Loading settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get "$app" domain)
path_url="/"
final_path=$(ynh_app_setting_get "$app" final_path)
port=$(ynh_app_setting_get "$app" port)
db_name=$(ynh_app_setting_get "$app" psql_db)
db_pwd=$(ynh_app_setting_get "$app" psqlpwd)

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_print_info "Validating restoration parameters..."

ynh_webpath_available "$domain" "$path_url" \
	|| ynh_die "Path not available: ${domain}${path_url}"
test ! -d "$final_path" \
	|| ynh_die "There is already a directory: $final_path "

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================

ynh_restore_file "/etc/nginx/conf.d/$domain.d/$app.conf"

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_print_info "Restoring the app main directory..."

ynh_restore_file "$final_path"

#=================================================
# RECREATE THE DEDICATED USER
#=================================================
ynh_print_info "Recreating the dedicated system user..."

# Create the dedicated user (if not existing)
ynh_system_user_create "$app"

#=================================================
# RESTORE USER RIGHTS
#=================================================

# Set right permissions
if [ ! -d "/home/yunohost.app/$app" ]; then
	mkdir -p "/home/yunohost.app/${app}/storage"
fi
chown -R "$app":"$app" "/home/yunohost.app/${app}/storage"

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_print_info "Reinstalling dependencies..."

# install nodejs
ynh_install_nodejs 8

# add backports for Debian Jessie (required to install ffmpeg)
if [ "$(lsb_release --codename --short)" == "jessie" ]; then
	echo "deb http://httpredir.debian.org/debian jessie-backports main" | tee /etc/apt/sources.list.d/jessie-backports.list
fi

# add yarn repo for Debian
curl -sS https://dl.yarnpkg.com/debian/pubkey.gpg | apt-key add -
echo "deb https://dl.yarnpkg.com/debian/ stable main" | tee /etc/apt/sources.list.d/yarn.list
ynh_package_update

# install postgresql, ffmpeg, redis
ynh_install_app_dependencies $pkg_dependencies

#=================================================
# RESTORE THE POSTGRESQL DATABASE
#=================================================
ynh_print_info "Restoring the PostgreSQL database..."

ynh_psql_test_if_first_run
ynh_psql_create_user "$app" "$db_pwd"
ynh_psql_execute_as_root \
"CREATE DATABASE $db_name ENCODING 'UTF8' LC_COLLATE='C' LC_CTYPE='C' template=template0 OWNER $app;"
ynh_psql_execute_file_as_root ./db.sql "$db_name"

#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_print_info "Restoring the systemd configuration..."

ynh_restore_file "/etc/systemd/system/$app.service"
systemctl enable "$app.service"

#=================================================
# RESTORE THE LOGROTATE CONFIGURATION
#=================================================

ynh_restore_file "/etc/logrotate.d/$app"

#=================================================
# RESTORE THE LOGROTATE CONFIGURATION
#=================================================

(
	cd "$final_path"
	yarn install --production --pure-lockfile --silent --cache-folder /var/cache/yarn/
)

# Set right permissions 
chown -R "$app":"$app" "$final_path"

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX AND PEERTUBE
#=================================================
ynh_print_info "Reloading nginx web server and peertube..."

systemctl reload nginx
systemctl enable "$app"
systemctl start "$app"
# App needs time to start
sleep 30

#=================================================
# END OF SCRIPT
#=================================================

ynh_print_info "Restoration completed for $app"