#!/bin/bash

#=================================================
# GENERIC START
#=================================================
# 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 $app path)
final_path=$(ynh_app_setting_get $app final_path)
port=$(ynh_app_setting_get $app port)

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

upgrade_type=$(ynh_check_app_version_changed)

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

# If port doesn't exist, create it
if [ -z "$port" ]; then
	port=4242
	ynh_app_setting_set $app port $port
fi

#=================================================
# CLOSE A PORT
#=================================================

if yunohost firewall list | grep -q "\- $port$"
then
	ynh_print_info "Closing port $port"
	ynh_exec_warn_less yunohost firewall disallow TCP $port
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)

#=================================================
# ACTIVATE MAINTENANCE MODE
#=================================================

ynh_maintenance_mode_ON

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

pushd "$final_path"
git fetch
git reset --hard origin/master
popd

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

# Create a dedicated nginx config
ynh_add_nginx_config

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

ynh_install_app_dependencies python-virtualenv sqlite3 zlib1g-dev


#=================================================
# 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
#=================================================
# SETUP SYSTEMD
#=================================================

ynh_add_systemd_config

#=================================================
# Fix current websocket version error (2019-02-14)
#=================================================

pushd $final_path
	ve3/bin/pip3 uninstall -y websockets
	ve3/bin/pip3 install 'websockets>=6.0,<7.0'
	ve3/bin/pip3 install -r requirements-frozen.txt
popd

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

# Set permissions on app files
chown -R $app:root $final_path

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

# Make app public
ynh_app_setting_set $app skipped_uris "/"

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

ynh_system_reload --service_name=nginx

#=================================================
# RESTART YUNORUNNER
#=================================================

ynh_system_reload --service_name=$app --action=restart


#=================================================
# DEACTIVE MAINTENANCE MODE
#=================================================

ynh_maintenance_mode_OFF

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

ynh_print_info "Upgrade of $app completed"