#!/bin/bash
# to test the functionnality :
# yunohost backup create -n "homeassistant-test" --apps homeassistant
# yunohost app remove homeassistant --purge
# yunohost backup restore "homeassistant-test"
# yunohost backup delete "homeassistant-test"

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

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

#=================================================
# MANAGE SCRIPT FAILURE
#=================================================

ynh_clean_setup () {
	true
}
ynh_abort_if_errors

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..."

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
port=$(ynh_app_setting_get --app=$app --key=port)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
data_path=$(ynh_app_setting_get --app=$app --key=data_path)
log_file=$(ynh_app_setting_get --app=$app --key=log_file)
path_url=$(ynh_app_setting_get --app=$app --key=path_url)
python=$(ynh_app_setting_get --app=$app --key=python)
db_name=$(ynh_app_setting_get --app=$app --key=db_name)
db_user=$db_name

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_script_progression --message="Validating restoration parameters..."

[ ! -d "$final_path" ] || ynh_die --message="There is already a directory: $final_path "

#=================================================
# STANDARD RESTORATION STEPS
#=================================================
# RESTORE THE NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the NGINX configuration..."

ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"

#=================================================
# RECREATE THE DEDICATED USER
#=================================================
ynh_script_progression --message="Recreating the dedicated system user..."

mynh_system_user_create

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Restoring the app main directory..."

ynh_restore_file --origin_path="$final_path"

#=================================================
# RESTORE THE DATA DIRECTORY
#=================================================
ynh_script_progression --message="Restoring the data directory..."

ynh_restore_file --origin_path="$data_path" --not_mandatory

mkdir -p $data_path

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Reinstalling dependencies..."

ynh_install_app_dependencies $pkg_dependencies
myynh_install_python --python="$python"

#=================================================
# RESTORE THE MYSQL DATABASE
#=================================================
ynh_script_progression --message="Restoring the MySQL database..."

db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd="$db_pwd"
ynh_mysql_connect_as --user=$db_user --password="$db_pwd" --database=$db_name < ./db.sql

#=================================================
# RESTORE VARIOUS FILES
#=================================================
ynh_script_progression --message="Restoring various files..."

ynh_restore_file --origin_path="/etc/sudoers.d/$app"

ynh_restore_file --origin_path="$(dirname "$log_file")"

#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_script_progression --message="Restoring the systemd configuration..."

ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
# add --verbose to track restart
sed -i 's/ExecStart=.*/& --verbose/g' "/etc/systemd/system/$app.service"
systemctl enable $app.service --quiet

#=================================================
# RESTORE THE LOGROTATE CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the logrotate configuration..."

ynh_restore_file --origin_path="/etc/logrotate.d/$app"

#=================================================
# IF NEEDED UPDATE THE PYHTON LINK IN THE VIRUTAL ENV.
#=================================================
ynh_script_progression --message="Updating the pyhton link in the pyhton virtual environment..."

hass_python_link=$(head -1 /var/www/homeassistant/bin/hass | sed 's/#!//')
if [ ! -e "$hass_python_link" ] ; then
    hass_python_new_dest=$(which `basename "$hass_python_link"`)
    ln -sfn "$hass_python_new_dest" "$hass_python_link"
fi

#=================================================
# SET FILE OWNERSHIP / PERMISSIONS
#=================================================

myynh_set_permissions

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

yunohost service add $app --description="Home Assistant server" --log="$log_file"

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

# start systemd service with --verbose
ynh_systemd_action --service_name=$app --action=start --line_match="Home Assistant initialized" --log_path="$log_file" --timeout=3600

# remove --verbose from service
ynh_replace_string --match_string=" --verbose" --replace_string="" --target_file="/etc/systemd/system/$app.service"
ynh_store_file_checksum --file="/etc/systemd/system/$app.service"
systemctl daemon-reload
ynh_systemd_action --service_name=$app --action=restart

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX AND PHP-FPM
#=================================================
ynh_script_progression --message="Reloading NGINX web server and PHP-FPM..."

ynh_systemd_action --service_name=nginx --action=reload

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

ynh_script_progression --message="Restoration completed for $app" --last