#!/bin/bash

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

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

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

# Exit if an error occurs during the execution of the script
ynh_abort_if_errors

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

# Retrieve arguments
domain=$YNH_APP_ARG_DOMAIN
path_url="/"
welcometext=$YNH_APP_ARG_WELCOMETEXT
registername=$YNH_APP_ARG_REGISTERNAME
instance_id=$YNH_APP_INSTANCE_NUMBER
mumbleweb=$YNH_APP_ARG_MUMBLEWEB
is_public=$YNH_APP_ARG_IS_PUBLIC

app=$YNH_APP_INSTANCE_NAME

server_password=$(ynh_string_random)
su_passwd=$(ynh_string_random)

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================

if [ "$mumbleweb" -eq 1 ] ; then
	ynh_script_progression --message="Validating installation parameters..." --weight=1

	final_path=/var/www/$app
	test ! -e "$final_path" || ynh_die "This path already contains a folder"

	# Register (book) web path
	ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
fi

#=================================================
# STORE SETTINGS FROM MANIFEST
#=================================================
ynh_script_progression --message="Storing installation settings..." --weight=2

# Save app settings
ynh_app_setting_set --app=$app --key=domain --value="$domain"
ynh_app_setting_set --app=$app --key=no_sso --value="true"
ynh_app_setting_set --app=$app --key=server_password --value="$server_password"
ynh_app_setting_set --app=$app --key=su_passwd --value="$su_passwd"
ynh_app_setting_set --app=$app --key=welcometext --value="$welcometext"
ynh_app_setting_set --app=$app --key=registername --value="$registername"
ynh_app_setting_set --app=$app --key=instance_id --value="$instance_id"
ynh_app_setting_set --app=$app --key=mumbleweb --value="$mumbleweb"

#=================================================
# STANDARD MODIFICATIONS
#=================================================
# FIND AND OPEN A PORT
#=================================================
ynh_script_progression --message="Finding an available port..." --weight=1

port=$(ynh_find_port --port=64738)
ynh_app_setting_set --app=$app --key=port --value=$port

# Open the port
ynh_script_progression --message="Configuring firewall..." --weight=1
ynh_exec_warn_less yunohost firewall allow Both $port

#=================================================
# INSTALL MUMBLE WEB
#=================================================

if [ "$mumbleweb" -eq 1 ] ; then
	ynh_script_progression --message="Installing Mumble web..." --weight=1

    port_web=$(ynh_find_port --port=64737)
    ynh_app_setting_set --app=$app --key=port_web --value=$port_web

	# Install NodeJS
    ynh_install_nodejs --nodejs_version=$nodejs_version

	# Create a system user
	ynh_system_user_create --username=$app --home_dir="$final_path"

	# Installing Mumble Web
	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
    ynh_setup_source --dest_dir="$final_path"

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

	# Configuring NGINX web server
	ynh_add_nginx_config

	# Configuring Mumble server
	ynh_use_nodejs
	(
	    cd $final_path
	    chown -R $app: $final_path
	    ynh_exec_warn_less ynh_exec_as "$app" PATH="$nodejs_path:$PATH" "$nodejs_path/npm" install --save --loglevel warn
	    ynh_exec_warn_less ynh_exec_as "$app" PATH="$nodejs_path:$PATH" "$nodejs_path/npm" run build
	    ls -lah
	)

	ynh_replace_string --match_string="__ENV_PATH__" --replace_string="$PATH" --target_file="../conf/mumble-web.service"
	ynh_exec_warn_less ynh_add_systemd_config --service=mumble-web --template=mumble-web.service

	yunohost service add mumble-web --description="Mumble web interface" --log="/var/log/$app/mumble-web.log"

	# Make app public if necessary
	if [ $is_public -eq 1 ]
	then
		ynh_permission_update --permission="main" --add="visitors"
	fi

	ynh_systemd_action --service_name=nginx --action=reload
fi

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=4

# Install Mumble Debian package via apt
ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies

#=================================================
# SPECIFIC SETUP
#=================================================
# mumble server conf.ini
#=================================================
ynh_script_progression --message="Configuring Mumble server..." --weight=1

ynh_add_config --template="../conf/mumble-server.ini" --destination="$final_path/mumble-server.ini"

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=10

# Create a dedicated systemd config
ynh_add_systemd_config

#=================================================
# GENERIC FINALIZATION
#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

chmod -R 770 "$final_path"
chown -R :mumble-server "$final_path"

#=================================================
# ADD USER TO SSL-CERT
#=================================================

# Add user to ssl-cert so it can read certificates
usermod --append --groups ssl-cert mumble-server

#=================================================
# Set SuperUser password
#=================================================

# || true temporarily to ignore a bug in murmurd 1.3.0
# https://github.com/mumble-voip/mumble/issues/3911
murmurd -ini "$final_path/mumble-server.ini" -supw "$su_passwd" "$instance_id" || true

#=================================================
# DISABLE DEFAULT SERVER
#=================================================

# Disable default server installed by Debian's package
systemctl stop mumble-server
systemctl disable mumble-server --quiet

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

# Add Mumble as a YunoHost service
yunohost service add $app --description="Mumble server" --log="/var/log/$app/$app.log" --needs_exposed_ports=$port

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=3

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

#=================================================
# SEND README TO ADMIN
#=================================================

message="
Port                   : $port
Password to join server: $server_password
SuperUser Password     : $su_passwd
Welcome text           : $welcometext
Root channel (your Mumble server name): $registername
Final path (where to find your files) : $final_path
Mumble configuration file             : $final_path/mumble-server.ini

Note about config file: this package will regenerate the config file on upgrade.
If you changed it manually and upgrade Mumble, you'll find a backup in $final_path.

Are you facing an issue, want to improve this app or say thank you?
Please open a new issue in this project: https://github.com/YunoHost-Apps/mumbleserver_ynh
"
ynh_send_readme_to_admin "$message"

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

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