#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================

timezone="$(cat /etc/timezone)"
secret=$(ynh_string_random --length=32)
redis_db=$(ynh_redis_get_free_db)

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

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# If backend_path doesn't exist, create it
if [ -z "${backend_path:-}" ]; then
	backend_path=/opt/$app
	ynh_app_setting_set --app=$app --key=backend_path --value=$backend_path
fi

if [ -z "${set_motd:-}" ]; then
	set_motd=""
	ynh_app_setting_set --app=$app --key=set_motd --value=$set_motd
fi

if [ -z "${enable_registration:-}" ]; then
	enable_registration="true"
	ynh_app_setting_set --app=$app --key=enable_registration --value=$enable_registration
fi

if [ -z "${enable_linksharing:-}" ]; then
	enable_linksharing="true"
	ynh_app_setting_set --app=$app --key=enable_linksharing --value=$enable_linksharing
fi

if [ -z "${enable_taskattachments:-}" ]; then
	enable_taskattachments="true"
	ynh_app_setting_set --app=$app --key=enable_taskattachments --value=$enable_taskattachments
fi

if [ -z "${enable_taskcomments:-}" ]; then
	enable_taskcomments="true"
	ynh_app_setting_set --app=$app --key=enable_taskcomments --value=$enable_taskcomments
fi

if [ -z "${enable_emailreminders:-}" ]; then
	enable_emailreminders="true"
	ynh_app_setting_set --app=$app --key=enable_emailreminders --value=$enable_emailreminders
fi

if [ -z "${enable_userdeletion:-}" ]; then
	enable_userdeletion="true"
	ynh_app_setting_set --app=$app --key=enable_userdeletion --value=$enable_userdeletion
fi

if [ -z "${maxavatarsize:-}" ]; then
	maxavatarsize=1024
	ynh_app_setting_set --app=$app --key=maxavatarsize --value=$maxavatarsize
fi

if [ -z "${maxitemsperpage:-}" ]; then
	maxitemsperpage=50
	ynh_app_setting_set --app=$app --key=maxitemsperpage --value=$maxitemsperpage
fi

if [ -z "${language:-}" ]; then
	language="en"
	ynh_app_setting_set --app=$app --key=language --value=$language
fi

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --weight=1

ynh_systemd_action --service_name=$app --action=stop --log_path=systemd

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=5

	# Frontend
	ynh_setup_source --dest_dir="$install_dir" --source_id="front"
	
	# Backend
	mkdir -p "$backend_path/files"
	tempdir="$(mktemp -d)"
	ynh_setup_source --dest_dir=$tempdir --source_id="back"
	back="$(find $tempdir -name "vikunja-*" \! -name "*.sha256")"
	cp "$back" "$backend_path/vikunja"
fi

chmod -R o-rwx "$install_dir"
chown -R $app:www-data "$install_dir"
chmod +x "$backend_path/vikunja"
chown -R $app:www-data "$backend_path/files"

#=================================================
# UPGRADE A CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading a configuration file..." --weight=1

ynh_add_config --template="config.yml" --destination="$backend_path/config.yml"

chmod 400 "$backend_path/config.yml"
chown $app:$app "$backend_path/config.yml"

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

ynh_add_nginx_config

ynh_add_systemd_config

yunohost service add $app --description="Self-hosted To-Do list application" --log="/var/log/$app/$app.log"

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

ynh_systemd_action --service_name=$app --action=start --log_path=systemd --line_match="server started on"

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

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