#!/bin/bash

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

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

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

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
language=$(ynh_app_setting_get --app=$app --key=language)
admin=$(ynh_app_setting_get --app=$app --key=admin)
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=$app --key=psqlpwd)
datadir=$(ynh_app_setting_get --app=$app --key=datadir)
api_key=$(ynh_app_setting_get --app=$app --key=api_key)
session_secret=$(ynh_app_setting_get --app=$app --key=session_secret)
website_title=$(ynh_app_setting_get --app=$app --key=website_title)
redis_db=$(ynh_app_setting_get --app=$app --key=redis_db)

#=================================================
# CHECK VERSION
#=================================================
ynh_script_progression --message="Checking version..."

upgrade_type=$(ynh_check_app_version_changed)

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

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

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..."

ynh_supervisor_action --service_name=$app --action="stop" --log_path="/var/log/supervisor/supervisord.log"

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

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

	ynh_app_setting_delete --app=$app --key=is_public
fi

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

# Create a dedicated user (if not existing)
ynh_system_user_create --username=$app --home_dir="$final_path"

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..."

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path" --keep="backend/development.ini frontend/configEnv.json"
fi

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..."

ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies $build_pkg_dependencies
ynh_install_nodejs --nodejs_version=$nodejs_version
ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..."

ynh_add_config --template="../conf/development.ini.sample" --destination="$final_path/backend/development.ini"
chmod 400 "$final_path/backend/development.ini"
chown $app:$app "$final_path/backend/development.ini"

ynh_add_config --template="../conf/configEnv.json.sample" --destination="$final_path/frontend/configEnv.json"
chmod 400 "$final_path/frontend/configEnv.json"
chown $app:$app "$final_path/frontend/configEnv.json"

#=================================================
# BUILD APP
#=================================================
ynh_script_progression --message="Building app..."

cp -r $final_path/frontend/dist/assets/branding.sample $final_path/frontend/dist/assets/branding

pushd "$final_path/backend"
	ynh_use_nodejs
	ynh_secure_remove --file="$final_path/backend/env"
	python3 -m venv env
	set +u;
	source env/bin/activate
	set -u;
	ynh_exec_warn_less pip install -r requirements-build.txt
	ynh_exec_warn_less ynh_exec_warn_less pip install -r requirements.txt
	ynh_exec_warn_less pip install -r requirements-full-preview-generator.txt
	ynh_exec_warn_less pip install -r requirements-db-postgres.txt
	ynh_exec_warn_less pip install -e "."
	mkdir sessions_data sessions_lock previews
	ynh_exec_warn_less alembic -c development.ini upgrade head
	set +u;
	deactivate
	set -u;
	ynh_exec_warn_less $ynh_npm install "i18next-conv@<8" -g
	ynh_exec_warn_less ./update_i18n_json_file.sh || exit 1
popd

pushd "$final_path"
	echo 'nodeLinker: node-modules' >> .yarnrc.yml
	ynh_exec_warn_less yarn install
	ynh_exec_warn_less ./build_full_frontend.sh
popd

ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
ynh_exec_warn_less ynh_package_autoremove

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app:www-data "$final_path"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..."

# Create a dedicated systemd config
ynh_add_supervisor_config --service="$app" --template="supervisord.conf"

ynh_add_config --template="../conf/web.ini" --destination="/etc/uwsgi/apps-available/$app-web.ini"
chmod 400 "/etc/uwsgi/apps-available/$app-web.ini"
chown $app:$app "/etc/uwsgi/apps-available/$app-web.ini"
ln -sf /etc/uwsgi/apps-available/$app-web.ini /etc/uwsgi/apps-enabled/$app-web.ini

ynh_add_config --template="../conf/webdav.ini" --destination="/etc/uwsgi/apps-available/$app-webdav.ini"
chmod 400 "/etc/uwsgi/apps-available/$app-webdav.ini"
chown $app:$app "/etc/uwsgi/apps-available/$app-webdav.ini"
ln -sf /etc/uwsgi/apps-available/$app-webdav.ini /etc/uwsgi/apps-enabled/$app-webdav.ini

ynh_add_config --template="../conf/caldav.ini" --destination="/etc/uwsgi/apps-available/$app-caldav.ini"
chmod 400 "/etc/uwsgi/apps-available/$app-caldav.ini"
chown $app:$app "/etc/uwsgi/apps-available/$app-caldav.ini"
ln -sf /etc/uwsgi/apps-available/$app-caldav.ini /etc/uwsgi/apps-enabled/$app-caldav.ini

#=================================================
# GENERIC FINALIZATION
#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..."

yunohost service add uwsgi --log="/var/log/uwsgi/app/$app-web.log"
yunohost service add supervisor --log="/var/log/supervisor/supervisord.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..."

# Start a systemd service
ynh_systemd_action --service_name="uwsgi" --action="restart" --log_path="/var/log/uwsgi/app/$app-web.log" --line_match="spawned uWSGI"
ynh_supervisor_action --service_name="$app" --action="restart" --log_path="/var/log/supervisor/supervisord.log"

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Upgrade of $app completed"