#!/bin/bash

#=================================================
# GENERIC STARTING
#=================================================
# IMPORT GENERIC HELPERS
#=================================================

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_print_info "Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get $app domain)
path_url=$(ynh_app_setting_get $app path)
is_public=$(ynh_app_setting_get $app is_public)
final_path=$(ynh_app_setting_get $app final_path)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_print_info "Ensuring downward compatibility..."

# Fix is_public as a boolean value
if [ "${is_public,,}" = "yes" ]; then
	ynh_app_setting_set $app is_public 1
	is_public=1
elif [ "${is_public,,}" = "no" ]; then
	ynh_app_setting_set $app is_public 0
	is_public=0
fi

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

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

# 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

#=================================================
# CHECK THE PATH
#=================================================

# Normalize the URL path syntax
path_url=$(ynh_normalize_url_path $path_url)

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# UPGRADE DEPENDENCIES
#=================================================
ynh_print_info "Upgrading dependencies..."

ynh_install_app_dependencies git build-essential libxslt-dev python-dev python-virtualenv virtualenv python-babel zlib1g-dev libffi-dev libssl-dev python-lxml uwsgi uwsgi-plugin-python

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_print_info "Upgrading source files..."

# Verify the checksum and backup the file if it's different
ynh_backup_if_checksum_is_different "$final_path/searx/settings.yml"

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

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_print_info "Upgrading nginx web server configuration..."

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

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_print_info "Making sure dedicated system user exists..."

# Create a dedicated user (if not existing)
ynh_system_user_create $app

#=================================================
# SPECIFIC UPGRADE
#=================================================
# UPGRADE SEARX IN ITS VIRTUALENV
#=================================================
ynh_print_info "Upgrading Searx..."

rm -r $final_path/lib/python2.7/site-packages/setuptools $final_path/lib/python2.7/site-packages/setuptools-*
virtualenv --system-site-packages "$final_path"
set +u; source $final_path/bin/activate; set -u
pip install -U setuptools
pip install --requirement $final_path/requirements-ynh.txt --upgrade

#=================================================
# CONFIGURE SEARX
#=================================================
ynh_print_info "Reconfiguring Searx..."

# Change instance name
ynh_replace_string "instance_name : \"searx\"" "instance_name : \"YunoSearx\"" "$final_path/searx/settings.yml"

# Generate a secret key
ynh_replace_string "secret_key : \"ultrasecretkey\"" "secret_key : \"$(ynh_string_random)\"" "$final_path/searx/settings.yml"

# Modify the base_url parameter, if it's installed in a subpath
if [ "$path_url" != "/" ]
then
  ynh_replace_string "base_url : False" "base_url : https://${domain}${path_url}/" "$final_path/searx/settings.yml"
else
  ynh_replace_string "base_url : False" "base_url : False" "$final_path/searx/settings.yml"
fi
ynh_store_file_checksum "$final_path/searx/settings.yml"

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

chown $app: --recursive "$final_path"

#=================================================
# CONFIGURE UWSGI FOR SEARX
#=================================================
ynh_print_info "Reconfiguring uWSGI for Searx..."

cp ../conf/searx.ini /etc/uwsgi/apps-available/$app.ini
ynh_replace_string "__APP__" "$app" /etc/uwsgi/apps-available/$app.ini
ynh_replace_string "__FINALPATH__" "$final_path" /etc/uwsgi/apps-available/$app.ini

#=================================================
# CHECK SEARX STARTING
#=================================================
ynh_print_info "Restarting Searx..."

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

#=================================================
# SETUP SSOWAT
#=================================================
ynh_print_info "Upgrading SSOwat configuration..."

# Make app public if necessary
if [ $is_public -eq 1 ]
then
	ynh_app_setting_set $app skipped_uris "/"
fi

#=================================================
# RELOAD NGINX
#=================================================
ynh_print_info "Reloading nginx web server..."

systemctl reload nginx

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

ynh_print_info "Upgrade of $app completed"