#!/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

app=$YNH_APP_INSTANCE_NAME

#Set dedicated variables
if [ "$path_url" == "/" ]; then
	api_path=/api_/$app
	mqtt_path=/mqtt/$app
else
	api_path=/api_$path_url
	mqtt_path=/mqtt$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

#=================================================
# 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
ynh_app_setting_set --app=$app --key=mqtt_path --value=$mqtt_path

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

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

mqtt_port=$(ynh_find_port --port=1883)
ynh_app_setting_set --app=$app --key=mqtt_port --value=$mqtt_port

#=================================================
# 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
#=================================================
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/domoticz_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/credentials
mosquitto_passwd -U /etc/mosquitto/conf.d/credentials

ynh_print_info --message="The credential to the mosquitto server has been saved in the settings of the app"
#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring NGINX web server..." --weight=2

# 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
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"
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
ynh_systemd_action --service_name=mosquitto --action="restart"

#=================================================
# 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" --url="$domain$api_path" --allowed="visitors"
ynh_permission_create --permission="domoticz_MQTT" --url="$domain$mqtt_path" --allowed="visitors"

#=================================================
# 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