#!/bin/bash

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

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

#=================================================
# LOAD SETTINGS
#=================================================
ynh_script_progression --message="Loading installation settings..." --weight=1

app=$YNH_APP_INSTANCE_NAME

domain=$(ynh_app_setting_get --app=$app --key=domain)
path_url=$(ynh_app_setting_get --app=$app --key=path)
no_sso=$(ynh_app_setting_get --app=$app --key=no_sso)
server_password=$(ynh_app_setting_get --app=$app --key=server_password)
su_passwd=$(ynh_app_setting_get --app=$app --key=su_passwd)
welcometext=$(ynh_app_setting_get --app=$app --key=welcometext)
registername=$(ynh_app_setting_get --app=$app --key=registerName)
port=$(ynh_app_setting_get --app=$app --key=port)
port_web=$(ynh_app_setting_get --app=$app --key=port_web)
final_path=$(ynh_app_setting_get --app=$app --key=final_path)
instance_id=$(ynh_app_setting_get --app=$app --key=instance_id)
mumbleweb=$(ynh_app_setting_get --app=$app --key=mumbleweb)

#=================================================
# CHECK VERSION
#=================================================

upgrade_type=$(ynh_check_app_version_changed)

#=================================================
# ENSURE DOWNWARD COMPATIBILITY
#=================================================
ynh_script_progression --message="Ensuring downward compatibility..." --weight=1

# If final_path doesn't exist, create it
if [ -z "$final_path" ]; then
	final_path=/var/www/$app
	ynh_app_setting_set "$app" final_path "$final_path"
fi

# test old time
if [ -z "$server_password" ]; then
	old_mumble_conf="/etc/mumble-server.ini"

	server_password=$(cat "$old_mumble_conf" \
		| grep "serverpassword=" \
		| sed "s/serverpassword=//")

	welcometext=$(cat "$old_mumble_conf" \
		| grep "welcometext=" \
		| sed "s/welcometext=//")

	registername=$(cat "$old_mumble_conf" \
		| grep "registerName=" \
		| sed "s/registername=//")

	# we don't know what the previous password was, let's regenerate it
	su_passwd=$(ynh_string_random)

	domain=$(yunohost domain list \
		| grep "\- " \
		| head -1 \
		| sed -r "s/.* (([a-z])*\.([a-z])*).*/\1/g")

	ynh_app_setting_set --app=$app --key=server_password --value=$server_password
	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=$app --key=su_passwd --value=$su_passwd
	ynh_app_setting_set --app=$app --key=domain --value=$domain

	systemctl stop mumble-server
	dpkg-reconfigure mumble-server --frontend=Noninteractive
	systemctl stop mumble-server
	systemctl disable mumble-server --quiet
fi

# Fix SSO issue
# https://github.com/YunoHost-Apps/mumbleserver_ynh/issues/19
if [ -z "$domain" ]; then
	domain=$(ynh_app_setting_get "$app" domain_mumble)
	ynh_app_setting_set "$app" domain "$domain"
	ynh_app_setting_delete "$app" domain_mumble
fi

# Fix SSO issue
# https://github.com/YunoHost-Apps/mumbleserver_ynh/issues/19
if [ -z "$no_sso" ]; then
	ynh_app_setting_set "$app" no_sso "true"
fi

# Fix multi installation
if [ -z "$instance_id" ]; then
	instance_id=$YNH_APP_INSTANCE_NUMBER
	ynh_app_setting_set "$app" instance_id "$instance_id"
fi

#=================================================
# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
#=================================================
ynh_script_progression --message="Backing up the app before upgrading (may take a while)..." --weight=5

# Backup the current version of the app
ynh_backup_before_upgrade
ynh_clean_setup () {
	# restore it if the upgrade fails
 	ynh_restore_upgradebackup
}

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

#=================================================
# STANDARD UPGRADE STEPS
#=================================================
# STOP SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Stopping a systemd service..." --weight=1

ynh_systemd_action --service_name="$app" --action="stop"
if [ "$mumbleweb" -eq 1 ] ; then
	ynh_systemd_action --service_name="mumble-web" --action="stop"
fi

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1

if [ "$mumbleweb" -eq 1 ] ; then
	# Create a dedicated user (if not existing)
	ynh_system_user_create --username="$app" --home_dir="$final_path"
fi

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================

if [ "$mumbleweb" -eq 1 ] ; then
	ynh_script_progression --message="Upgrading source files..." --weight=1

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$final_path" #--keep="$final_path/mumble-server.ini"
fi

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Upgrading NGINX web server configuration..."  --weight=5

# Create a dedicated nginx config
if [ "$mumbleweb" -eq 1 ] ; then
	ynh_add_nginx_config
fi

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Upgrading dependencies..." --weight=1

# Install Mumble Debian package via apt
ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies

if [ "$mumbleweb" -eq 1 ] ; then
    ynh_install_nodejs --nodejs_version=$nodejs_version
fi

#=================================================
# SPECIFIC UPGRADE
#=================================================
# mumble server conf.ini
#=================================================

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

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Upgrading systemd configuration..." --weight=2

# Create a dedicated systemd config
ynh_add_systemd_config

if [ "$mumbleweb" -eq 1 ] ; then
	ynh_replace_string --match_string="__ENV_PATH__" --replace_string="$PATH" --target_file="../conf/mumble-web.service"
	ynh_add_systemd_config --service=mumble-web --template=mumble-web.service
fi

#=================================================
# 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 "../conf/mumble-server.ini" -supw "$su_passwd" "$instance_id" || true

#=================================================
# Disable default server installed by Debian's package
#=================================================

systemctl stop mumble-server
systemctl disable mumble-server --quiet

#=================================================
# ADVERTISE SERVICE IN ADMIN PANEL
#=================================================

# Add Mumble as a YunoHost service
yunohost service add $app --description="Mumble server" --log="/var/log/$app/$app.log" --needs_exposed_ports=$port
# Add Mumble as a YunoHost service
if [ "$mumbleweb" -eq 1 ] ; then
	yunohost service add mumble-web --description="Mumble web interface" --log="/var/log/$app/mumble-web.log"
fi

#=================================================
# START SYSTEMD SERVICE
#=================================================
ynh_script_progression --message="Starting a systemd service..." --weight=1

ynh_systemd_action --service_name="$app" --action="start" --log_path="/var/log/$app/$app.log"
if [ "$mumbleweb" -eq 1 ] ; then
	ynh_systemd_action --service_name="mumble-web" --action="start" --log_path="/var/log/$app/mumble-web.log"
fi

#=================================================
# RELOAD NGINX
#=================================================
if [ "$mumbleweb" -eq 1 ] ; then
	ynh_script_progression --message="Reloading NGINX web server..." --weight=2

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

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

message="
Mumble server was updated!

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="Upgrade of $app completed" --last