#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# 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)

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

upgrade_type=$(ynh_check_app_version_changed)

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

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

# Cleaning legacy permissions
if ynh_legacy_permissions_exists; then
	ynh_legacy_permissions_delete_all

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

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=2

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# 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
#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=7

ynh_install_app_dependencies $pkg_dependencies

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

# 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..." --weight=3

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

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..." --weight=2

path_no_root=${path_url%/}
# Create a dedicated NGINX config
ynh_add_nginx_config "path_no_root"

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPGRADE SEARX IN ITS VIRTUALENV
#=================================================
ynh_script_progression --message="Upgrading Searx..." --weight=7

# Clean venv if it still on python2
if [ ! -e $final_path/bin/python3 ]
then
    ynh_regex_secure_remove --file=$final_path/lib/ --regex='python[^/.]*'
    ynh_regex_secure_remove --file=$final_path/lib64/ --regex='python[^/.]*'
    ynh_regex_secure_remove --file=$final_path/share/python-wheels
fi
ynh_regex_secure_remove --file=$final_path/lib/python3/site-packages/setuptools
ynh_regex_secure_remove --file=$final_path/lib/python3/site-packages/ --regex='setuptools-[^/.]*'

python3 -m venv --system-site-packages "$final_path"

set +u; source $final_path/bin/activate; set -u
pip3 install -U setuptools
pip3 install --requirement $final_path/requirements-ynh.txt --upgrade

#=================================================
# CONFIGURE SEARX
#=================================================
ynh_script_progression --message="Configuring Searx..." --weight=2

secret_key=$(ynh_string_random)

ynh_add_config --template="../conf/settings.yml" --destination="$final_path/searx/settings.yml"

#=================================================
# GENERIC FINALISATION
#=================================================
# SECURING FILES AND DIRECTORIES
#=================================================

chown -R $app: "$final_path"

#=================================================
# CONFIGURE UWSGI FOR SEARX
#=================================================
ynh_script_progression --message="Reconfiguring uWSGI for Searx..." --weight=2

# Clean old files
ynh_secure_remove --file="/etc/uwsgi/apps-enabled/$app.ini"
ynh_secure_remove --file="/etc/uwsgi/apps-available/$app.ini"
ynh_add_uwsgi_service

#=================================================
# CHECK SEARX STARTING
#=================================================
ynh_script_progression --message="Restarting Searx..." --weight=3

# Wait for searx to be fully started
ynh_systemd_action --service_name=uwsgi-app@$app.service --action=restart --line_match="spawned uWSGI master process" --log_path="/var/log/uwsgi/$app/$app.log"

#=================================================
# 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="Upgrade of Searx completed" --last