#!/bin/bash

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

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

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

#REMOVEME? app=$YNH_APP_INSTANCE_NAME

#REMOVEME? domain=$(ynh_app_setting_get --app=$app --key=domain)
#REMOVEME? path=$(ynh_app_setting_get --app=$app --key=path)
#REMOVEME? admin=$(ynh_app_setting_get --app=$app --key=admin)
#REMOVEME? #REMOVEME? install_dir=$(ynh_app_setting_get --app=$app --key=install_dir)
#REMOVEME? language=$(ynh_app_setting_get --app=$app --key=language)
#REMOVEME? db_name=$(ynh_app_setting_get --app=$app --key=db_name)
#REMOVEME? db_user=$db_name
#REMOVEME? db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
#REMOVEME? port=$(ynh_app_setting_get --app=$app --key=port)
#REMOVEME? backend_port=$(ynh_app_setting_get --app=$app --key=backend_port)
#REMOVEME? similarity_port=$(ynh_app_setting_get --app=$app --key=similarity_port)
#REMOVEME? data_path=$(ynh_app_setting_get --app=$app --key=data_path)
#REMOVEME? allow_multimedia_write=$(ynh_app_setting_get --app=$app --key=allow_multimedia_write)

#=================================================
# CHECK VERSION
#=================================================

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
#REMOVEME? ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=30

# Backup the current version of the app
#REMOVEME? ynh_backup_before_upgrade
#REMOVEME? ynh_clean_setup () {
	# Restore it if the upgrade fails
#REMOVEME? 	ynh_restore_upgradebackup
}
# Exit if an error occurs during the execution of the script
#REMOVEME? ynh_abort_if_errors

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping systemd services..." --weight=7

ynh_systemd_action --service_name=$app-backend --action="stop" --log_path="/var/log/$app/gunicorn_django.log"
ynh_systemd_action --service_name=$app-frontend --action="stop" --log_path="systemd"
ynh_systemd_action --service_name=$app-image-similarity --action="stop" --log_path="/var/log/$app/image_similarity.log"
ynh_systemd_action --service_name=$app-worker --action="stop" --log_path="/var/log/$app/$app-worker.log"

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# Remove old node version
ynh_use_nodejs
if [ "$nodejs_version" -eq 10 ]; then
	ynh_remove_nodejs
fi

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	unpack_source
fi

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config backend_port

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
#REMOVEME? ynh_script_progression --message="Upgrading dependencies..." --weight=1

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

#=================================================
# CREATE DEDICATED USER
#=================================================
#REMOVEME? ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1

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

#=================================================
# SPECIFIC UPGRADE
#=================================================
# SET UP BACKEND
#=================================================
ynh_script_progression --message="Setting up backend..." --weight=50

set_up_backend

#=================================================
# SET UP FRONTEND
#=================================================
ynh_script_progression --message="Setting up frontend..." --weight=5

set_up_frontend

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configurations..." --weight=1

# Create dedicated systemd configs
ynh_add_systemd_config --service=$app-backend --template=backend.service
ynh_add_systemd_config --service=$app-frontend --template=frontend.service
ynh_add_systemd_config --service=$app-image-similarity --template=image-similarity.service
ynh_add_systemd_config --service=$app-worker --template=worker.service

#=================================================
# ADD CONFIGURATIONS
#=================================================
ynh_script_progression --message="Generating configuration files..." --weight=1

add_configuations

#=================================================
# FINALIZE DATABASE
#=================================================
ynh_script_progression --message="Finalizing database..." --weight=1

upgrade_db

#=================================================
# 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

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

# Set permissions to app files
set_permissions

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..." --weight=1

# Use logrotate to manage application logfiles
set_up_logrotate

#=================================================
# INTEGRATE SERVICES 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

# Start systemd services
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"

#=================================================
# RELOAD NGINX
#=================================================
#REMOVEME? ynh_script_progression --message="Reloading NGINX web server..." --weight=1

#REMOVEME? ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# END OF SCRIPT
#=================================================
ynh_script_progression --message="Upgrade of $app completed" --last