#!/bin/bash

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

# Keep this path for calling _common.sh inside the execution's context of backup and restore scripts
source ../settings/scripts/_common.sh
source /usr/share/yunohost/helpers

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

ynh_clean_setup () {
	ynh_clean_check_starting
}
# Exit if an error occurs during the execution of the script
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)
path_url=$(ynh_app_setting_get --app="$app" --key=path)
final_path=$(ynh_app_setting_get --app="$app" --key=final_path)
backup_OS=$(ynh_app_setting_get --app="$app" --key=OS)
backup_mach=$(ynh_app_setting_get --app="$app" --key=mach)
mqtt_domain=$(ynh_app_setting_get --app="$app" --key=mqtt_domain)

#=================================================
# CHECK IF THE APP CAN BE RESTORED
#=================================================
ynh_script_progression --message="Validating restoration parameters..."
test ! -d "$final_path" \
	|| ynh_die --message="There is already a directory: $final_path "
#As we are downloading compiled binaries for each system, we have to check if the restore occurs
#on the same system type. If we are restoring on another system type it won't work and in that
#case we must go through a reinstall process.
test "$backup_OS" = "$os" \
	|| ynh_die --message="Cannot restore : previous OS is $backup_OS, current OS is $OS, please reinstall"
test "$backup_mach" = "$mach" \
	|| ynh_die --message="Cannot restore : previous machine type is $backup_mach, current machine type is $MACH, please reinstall"

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

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

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

# Create the dedicated user (if not existing)
ynh_system_user_create --username="$app" --home_dir="$final_path"

#allow user to access USB / serial port to communicate with tools (RFXtrx, Z-wave dongle, etc.) & i2c bus
if grep dialout -q < /etc/group; then
	usermod -a -G dialout "$app"
fi
if grep i2c -q < /etc/group; then
	usermod -a -G i2c "$app"
fi
if grep gpio -q < /etc/group; then
	usermod -a -G gpio "$app"
fi

#Restore user authorization to restart server
ynh_restore_file --origin_path="/etc/sudoers.d/$app"

#=================================================
# RESTORE THE APP MAIN DIR
#=================================================
ynh_script_progression --message="Restoring the app main directory..." --weight=5

ynh_restore_file --origin_path="$final_path"

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R "$app":"$app" "$final_path"

#=================================================
# SPECIFIC RESTORATION
#=================================================
# REINSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Reinstalling dependencies..." --weight=5

# Define and install dependencies
ynh_install_app_dependencies "$pkg_dependencies"

#=================================================
# SET MOSQUITTO SETTINGS
#=================================================
if [ ! -z "$mqtt_domain" ]; then
	ynh_script_progression --message="Reinstalling up mosquitto..." --weight=5

	#Installing packages
	ynh_install_extra_app_dependencies --repo="deb https://repo.mosquitto.org/debian buster main" --package="$extra_pkg_dependencies" --key="http://repo.mosquitto.org/debian/mosquitto-repo.gpg.key"
	#reinstalling settings
	ynh_restore_file --origin_path="/etc/mosquitto/conf.d" --not_mandatory
fi

#=================================================
# RESTORE SYSTEMD
#=================================================
ynh_script_progression --message="Restoring the systemd configuration..." --weight=3

ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
systemctl enable "$app".service --quiet

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

yunohost service add "$app" --description="Domotique open sources" --log="/var/log/$app/$app.log"
[[ ! -z "$mqtt_domain" ]] && yunohost service add mosquitto --description="Serveur MQTT pour domoticz" --log="/var/log/mosquitto/mosquitto.log"


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

ynh_systemd_action --service_name="$app" --action="start" --log_path="/var/log/$app/$app.log"

#Restarting mosquitto to take changes into account
[[ ! -z "$mqtt_domain" ]] && ynh_systemd_action --service_name=mosquitto --action="restart"

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

mkdir -p /var/log/"$app"
chown -R domoticz: /var/log/"$app"

ynh_restore_file --origin_path="/etc/logrotate.d/$app"
[[ ! -z "$mqtt_domain" ]] && ynh_use_logrotate --logfile="/var/log/mosquitto/"

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

ynh_restore_file --origin_path="/usr/share/yunohost/hooks/conf_regen/95-nginx_domoticz"
yunohost tools regen-conf postfix

#=================================================
# RESTORE THE FAIL2BAN CONFIGURATION
#=================================================
ynh_script_progression --message="Restoring the Fail2Ban configuration..." --weight=7

ynh_restore_file --origin_path="/etc/fail2ban/jail.d/$app.conf"
ynh_restore_file --origin_path="/etc/fail2ban/filter.d/$app.conf"

log_file=/var/log/$app/$app.log
if [ ! -f "$log_file" ]; then
	touch "$log_file"
	chown $app: "$log_file"
fi

ynh_systemd_action --action=restart --service_name=fail2ban

#=================================================
# GENERIC FINALIZATION
#=================================================
# RELOAD NGINX AND PHP-FPM
#=================================================
ynh_script_progression --message="Reloading NGINX web server..." --weight=3

ynh_systemd_action --service_name=nginx --action=reload

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

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