#!/bin/bash

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

source _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

#=================================================
# RETRIEVE ARGUMENTS FROM THE MANIFEST
#=================================================

domain="$YNH_APP_ARG_DOMAIN"
path_url="$YNH_APP_ARG_PATH"
is_public="$YNH_APP_ARG_IS_PUBLIC"
mqtt_domain="$YNH_APP_ARG_MQTT_DOMAIN"

app="$YNH_APP_INSTANCE_NAME"

#Set dedicated variables
if [ "$path_url" == "/" ]; then
	api_path=/api_/"$app"
else
	api_path=/api_"$path_url"
fi
#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..."

final_path=/opt/yunohost/"$app"
test ! -e "$final_path" || ynh_die --message="This path already contains a folder"

# Register (book) web path
ynh_webpath_register --app="$app" --domain="$domain" --path_url="$path_url"
#impossible de booker plusieurs webpath
#if [ ! -z $mqtt_domain ]; then
#	ynh_webpath_register --app=mqtt_$app --domain=$mqtt_domain --path_url="/"
#fi

if [ "$domain" == "$mqtt_domain" ]; then 
	mqtt_domain=""
fi

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..."

ynh_app_setting_set --app="$app" --key=domain --value="$domain"
ynh_app_setting_set --app="$app" --key=path --value="$path_url"

#Will be used in restore script to check that we're restoring on the same OS/Board type
ynh_app_setting_set --app="$app" --key=OS --value="$os"
ynh_app_setting_set --app="$app" --key=mach --value="$mach"

#path used by api & mqtt to read/update domoticz
ynh_app_setting_set --app="$app" --key=api_path --value="$api_path"
[[ ! -z "$mqtt_domain" ]] && ynh_app_setting_set --app="$app" --key=mqtt_domain --value="$mqtt_domain"


#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding available port..."

# Find an available port
port=$(ynh_find_port --port=8080)
ynh_app_setting_set --app="$app" --key=port --value="$port"

if [ ! -z "$mqtt_domain" ]; then
	ynh_script_progression --message="Finding available ports for Mosquitto..."
	mqtt_port=$(ynh_find_port --port="$default_mqtt_port")
	ynh_app_setting_set --app="$app" --key=mqtt_port --value="$mqtt_port"

	mqtt_websocket_port=$(ynh_find_port --port="$default_mqtt_websocket_port")
	ynh_app_setting_set --app="$app" --key=mqtt_websocket_port --value="$mqtt_websocket_port"
fi

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=15

ynh_install_app_dependencies "$pkg_dependencies"

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..."

# Create a system user
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

#allow app user to restart service on startup
ynh_add_config --template="../conf/sudoer" --destination="/etc/sudoers.d/$app"
chmod 440 /etc/sudoers.d/"$app"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=5

ynh_app_setting_set --app="$app" --key=final_path --value="$final_path"
# Download, check integrity, uncompress and patch the source from app.src
# Create an app.src for the correct version of domoticz
# match string are fulfilled in _common.sh via the upstream bash installation script
ynh_add_config --template="../conf/app.src.default" --destination="../conf/app.src"

ynh_setup_source --dest_dir="$final_path"

#Create the database file
if [ ! -f "$final_path"/domoticz.db ]; then
	touch "$final_path"/domoticz.db
	chmod 640 "$final_path"/domoticz.db
fi

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


#=================================================
# SET MOSQUITTO SETTINGS
#=================================================
if [ ! -z "$mqtt_domain" ]; then

	ynh_script_progression --message="Setting 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"

	#Setting up conf file for access
	ynh_add_config --template="../conf/domoticz_mosquitto.conf" --destination="/etc/mosquitto/conf.d/"$app"_mosquitto.conf"
	chmod 644 /etc/mosquitto/conf.d/"$app"_mosquitto.conf

	#Setting up user&pwd for mqtt access
	ynh_app_setting_set --app="$app" --key=mqtt_user --value=$(ynh_string_random --length=8)
	ynh_app_setting_set --app="$app" --key=mqtt_pwd --value=$(ynh_string_random)
	echo $(ynh_app_setting_get --app="$app" --key=mqtt_user):$(ynh_app_setting_get --app="$app" --key=mqtt_pwd) > "/etc/mosquitto/conf.d/"$app"_credentials"
	mosquitto_passwd -U "/etc/mosquitto/conf.d/"$app"_credentials"

	ynh_print_info --message="The credential to the mosquitto server has been saved in the settings of the app"
fi


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

[[ ! -z "$mqtt_domain" ]] && ynh_add_config --template="../conf/mqtt_nginx.conf" --destination="/etc/nginx/conf.d/"$mqtt_domain".d/mqtt_"$app".conf"

#Set Hook for nginx domain
cp -R ../sources/hooks/conf_regen/95-nginx_domoticz /usr/share/yunohost/hooks/conf_regen/
yunohost tools regen-conf nginx

# Create a dedicated NGINX config
ynh_add_nginx_config


#=================================================
# SPECIFIC SETUP
#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..."

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..."

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

# Use logrotate to manage application logfile(s)
ynh_use_logrotate --logfile="/var/log/$app/$app.log"
[[ ! -z "$mqtt_domain" ]] && ynh_use_logrotate --logfile="/var/log/mosquitto/"

#=================================================
# 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..."

# Start a systemd service
ynh_systemd_action --service_name="$app" --action="start"

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

#=================================================
# SETUP FAIL2BAN
#=================================================
ynh_script_progression --message="Configuring Fail2Ban..." --weight=8

# Make sure a log file exists (mostly for CI tests)
log_file=/var/log/$app/$app.log
if [ ! -f "$log_file" ]; then
	touch "$log_file"
	chown $app: "$log_file"
fi

# Create a dedicated Fail2Ban config
ynh_add_fail2ban_config --logpath="$log_file" --failregex="^.*Error: Failed login attempt from <HOST>.*$" --max_retry=5


#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..."

# Make app public if necessary
if [ "$is_public" -eq 1 ]
then
	# Everyone can access the app.
	# The "main" permission is automatically created before the install script.
	ynh_permission_update --permission="main" --add="visitors"
fi

#API & MQTT should stay publicly accessible.  
ynh_permission_create --permission="domoticz_API" --label="api" --url="$domain$api_path" --allowed="visitors" --show_tile="false" --protected="true"
[[ ! -z "$mqtt_domain" ]] && ynh_permission_create --permission="domoticz_MQTT" --label="MQTT" --url="$mqtt_domain" --allowed="visitors" --show_tile="false" --protected="true"


#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading NGINX web server..."

ynh_systemd_action --service_name=nginx --action=reload

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

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