#!/bin/bash

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

source _common.sh
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)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
port=$(ynh_app_setting_get --app=$app --key=port)
salt=$(ynh_app_setting_get --app=$app --key=salt)
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)

#=================================================
# 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_systemd_action --service_name=$app --action="stop" --log_path=systemd --line_match="Stopped"

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

# Previous versions did not set the DB name as a setting, so we need to set it now (will be used on
# remove).
if [ -z "$db_name" ]
then
	db_name=$(ynh_sanitize_dbid --db_name=$app)
	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
	db_user=$db_name
fi

# If final_path doesn't exist, create it
if [ -z "$final_path" ]
then
	final_path=/var/www/$app
	ynh_app_setting_set "$app" final_path "$final_path"
fi

if [ -d "/home/ynh$app" ]
then
	mv "/home/ynh$app/data" "$final_path/data"
	ynh_secure_remove --file="/home/ynh$app"
fi

if [ -z "$salt" ]
then
	salt=$(ynh_string_random 40)
	ynh_app_setting_set "$app" salt "$salt"
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..."

	# Remove previous build files to ensure there is no conflict (obsolete helpers.js file
	# called instead of helpers/index.js for ex.)
	ynh_secure_remove --file="$final_path/build"

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path"

	if [ -z "$final_path/data" ]
	then
		mkdir "$final_path/data"
	fi
fi

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

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

ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version

# Now that postgresql is installed, check the db exists and the user is set up
if [ -z "$db_pwd" ]
then
	ynh_script_progression --message="Setting up database"
	ynh_psql_test_if_first_run
	ynh_psql_setup_db --db_user=$db_user --db_name=$db_name
	db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd)
fi

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC UPGRADE
#=================================================
# INSTALL WOOB WITH PIP
#=================================================
ynh_script_progression --message="Installing woob..."

ynh_secure_remove --file="${final_path}/venv"
virtualenv --python=python3 --system-site-packages "${final_path}/venv"
(
	set +o nounset
	source "${final_path}/venv/bin/activate"
	set -o nounset

	pip install --upgrade pip
	pip install woob html2text simplejson BeautifulSoup4 PyExecJS typing-extensions pdfminer.six --ignore-installed
)
chown -R $app:www-data "$final_path"

#=================================================
# INSTALL KRESUS WITH NPM
#=================================================
ynh_script_progression --message="Installing app..."

ynh_use_nodejs
(
	cd "$final_path"

	# In case of nodejs upgrade, remove the current node_modules to make sure there are no errors
	# linked to modules compiled for the previous version.
	ynh_secure_remove --file="$final_path/node_modules"

	ynh_exec_warn_less $ynh_npm install --production --unsafe-perm
)
chown -R $app:www-data "$final_path"

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

ynh_add_config --template="../conf/config.ini" --destination="$final_path/config.ini"

chmod 400 "$final_path/config.ini"
chown $app:$app "$final_path/config.ini"

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

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Upgrading logrotate configuration..."

mkdir -p "/var/log/$app/"
touch "/var/log/$app/$app.log"
chown -R $app:$app "/var/log/$app/"
# Use logrotate to manage app-specific logfile(s)
ynh_use_logrotate --non-append

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

yunohost service add $app --log="/var/log/$app/$app.log"

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

ynh_systemd_action --service_name=$app --action="start" --log_path=systemd --line_match="Server is ready"

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

ynh_systemd_action --service_name=nginx --action=reload

#=================================================
# SEND README TO ADMIN
#=================================================

message="
Kresus was successfully updated!

Domain: $domain
Path  : $path_url
Config: $final_path/config.ini

Note about config.ini: this package will regenerate the config file on upgrade.
If you changed it manually and upgrade Kresus, you'll find a backup in $final_path.

Are you facing an issue, want to improve this app or say thank you?
Please open a new issue in this project: https://github.com/YunoHost-Apps/kresus_ynh
"
ynh_send_readme_to_admin "$message"

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

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