#!/bin/bash

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

# Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
source ../settings/scripts/_common.sh
source /usr/share/yunohost/helpers

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

ynh_clean_setup () {
	ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=1

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name
db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
data_path=$(ynh_app_setting_get --app=$app --key=data_path)
allow_multimedia_write=$(ynh_app_setting_get --app=$app --key=allow_multimedia_write)
port=$(ynh_app_setting_get --app=$app --key=port)
backend_port=$(ynh_app_setting_get --app=$app --key=port)
similarity_port=$(ynh_app_setting_get --app=$app --key=similarity_port)

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_script_progression --message="Validating restoration parameters..." --weight=1

test ! -d $final_path \
	|| ynh_die --message="There is already a directory: $final_path "

test ! -d $data_path \
	|| ynh_die --message="There is already a directory: $data_path "

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RECREATE THE DEDICATED USER
#=================================================
ynh_script_progression --message="Recreating the dedicated system user..." --weight=1

# Create the dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir=$data_path

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Restoring the app main directory..." --weight=1

ynh_restore_file --origin_path="$final_path"

#=================================================
# RESTORE THE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Restoring the data directory..." --weight=1

ynh_restore_file --origin_path="$data_path" --not_mandatory
mkdir -p $data_path/protected_media/{thumbnails_big,square_thumbnails,square_thumbnails_small,faces}
mkdir -p $data_path/data/nextcloud_media
mkdir -p $data_path/matplotlib
ln -s $final_path/data_models $data_path/data_models

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

# Restore permissions on app files
set_permissions

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Reinstalling dependencies..." --weight=60

# Define and install dependencies
ynh_install_app_dependencies $pkg_dependencies
ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"

#=================================================
# RESTORE NODE.JS
#=================================================
ynh_script_progression --message="Restoring Node.js..." --weight=1

set_node_vars

#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the NGINX web server configuration..."

ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"

#=================================================
# SPECIFIC RESTORATION
#=================================================
# RESTORE THE POSTGRESQL DATABASE
#=================================================
ynh_script_progression --message="Restoring the PostgreSQL database..." --weight=2

ynh_psql_test_if_first_run
ynh_psql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
ynh_psql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < ./db.sql

#=================================================
# RESTORE VARIOUS FILES
#=================================================

ynh_restore_file --origin_path="/var/log/$app"

#=================================================
# YUNOHOST MULTIMEDIA INTEGRATION
#=================================================
ynh_script_progression --message="Adding multimedia directories..." --weight=1

# Build YunoHost multimedia directories
ynh_multimedia_build_main_dir
if [ $allow_multimedia_write -eq 1 ]; then
	ynh_multimedia_addaccess $app
fi

#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_script_progression --message="Restoring the systemd configurations..." --weight=1

ynh_restore_file --origin_path="/etc/systemd/system/$app-backend.service"
systemctl enable $app-backend.service --quiet
ynh_restore_file --origin_path="/etc/systemd/system/$app-frontend.service"
systemctl enable $app-frontend.service --quiet
ynh_restore_file --origin_path="/etc/systemd/system/$app-image-similarity.service"
systemctl enable $app-image-similarity.service --quiet
ynh_restore_file --origin_path="/etc/systemd/system/$app-worker.service"
systemctl enable $app-worker.service --quiet

#=================================================
# RESTORE THE LOGROTATE CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the logrotate configuration..."

ynh_restore_file --origin_path="/etc/logrotate.d/$app"

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating services in YunoHost..." --weight=1

yunohost service add $app-backend --description="Backend for librephotos" --log="/var/log/$app/gunicorn_django.log"
yunohost service add $app-frontend --description="Frontend for librephotos" --log="/var/log/$app/$app-frontend.log"
yunohost service add $app-image-similarity --description="Image similarity server for librephotos" --log="/var/log/$app/image_similarity.log"
yunohost service add $app-worker --description="Worker for librephotos" --log="/var/log/$app/$app-worker.log"

#=================================================
# START SYSTEMD SERVICES
#=================================================
ynh_script_progression --message="Starting systemd services..." --weight=1

ynh_systemd_action --service_name=$app-backend --action="start" --log_path="/var/log/$app/gunicorn_django.log" --line_match="Listening at: http"
ynh_systemd_action --service_name=$app-frontend --action="start" --log_path="systemd" --line_match="INFO: Accepting connections at http:"
ynh_systemd_action --service_name=$app-image-similarity --action="start" --log_path="/var/log/$app/image_similarity.log"
ynh_systemd_action --service_name=$app-worker --action="start" --log_path="/var/log/$app/$app-worker.log"

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Restoration completed for $app" --last