#!/bin/bash

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

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

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

ynh_clean_setup () {
	### Remove this function if there's nothing to clean before calling the remove script.
	true
}
# 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=$YNH_APP_ARG_IS_PUBLIC
admin=$YNH_APP_ARG_ADMIN
password=$YNH_APP_ARG_PASSWORD

app=$YNH_APP_INSTANCE_NAME

#=================================================
# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
#=================================================
ynh_script_progression --message="Validating installation parameters..." --weight=1

# Testing if ZeroTier is installed
yunohost app list | grep -q "id: zerotier" || ynh_die "ZeroTier is needed, but it is not installed. There is a package for that!"

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..." --weight=1

ynh_app_setting_set --app=$app --key=domain --value=$domain
ynh_app_setting_set --app=$app --key=final_path --value=$final_path

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

# Find an available port
port=$(ynh_find_port --port=8095)
ynh_app_setting_set --app=$app --key=port --value=$port

#=================================================
# INSTALL DEPENDENCIES
#=================================================
ynh_script_progression --message="Installing dependencies..." --weight=2

ynh_install_app_dependencies $pkg_dependencies

ynh_install_nodejs --nodejs_version=$nodejs_version
ynh_use_nodejs

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
ynh_script_progression --message="Setting up source files..." --weight=2

ynh_app_setting_set --app=$app --key=final_path --value=$final_path
# Download, check integrity, uncompress and patch the source from app.src
ynh_setup_source --dest_dir="$final_path"

#=================================================
# NGINX CONFIGURATION
#=================================================
ynh_script_progression --message="Configuring nginx web server..." --weight=1

# Create a dedicated nginx config
ynh_add_nginx_config

#=================================================
# CREATE DEDICATED USER
#=================================================
ynh_script_progression --message="Configuring system user..." --weight=1

# Create a system user
ynh_system_user_create $app $final_path

#=================================================
# SPECIFIC SETUP
#=================================================
# NPM INSTALL
#=================================================
ynh_script_progression --message="Performing Node app installation..." --weight=3

chown -R $app: $final_path

pushd $final_path/src
	ynh_exec_as $app $ynh_node_load_PATH $ynh_npm --loglevel=error install node-gyp
	ynh_exec_as $app $ynh_node_load_PATH $ynh_npm --loglevel=error install
	ynh_exec_as $app $ynh_node_load_PATH $ynh_npm --loglevel=error install argon2-cli
	ynh_exec_as $app $ynh_node_load_PATH $ynh_npm --loglevel=error audit fix
popd

#=================================================
# MODIFY A CONFIG FILE
#=================================================

# Setup env file
mkdir -p $final_path
env_file=$final_path/src/.env
touch $env_file
chmod 600 $env_file

echo "ZT_TOKEN=$(</var/lib/zerotier-one/authtoken.secret)" >> $env_file
echo "ZT_ADDR=localhost:$(</var/lib/zerotier-one/zerotier-one.port)" >> $env_file
echo "HTTP_PORT=$port" >> $env_file

# Setup user credentials file
hashedpassword=$(echo -n "$password" | $final_path/src/node_modules/.bin/argon2-cli -e)
echo "{\"$admin\":{\"name\":\"$admin\",\"pass_set\":true,\"hash\":\"$hashedpassword\"}}" >> "$final_path/src/etc/passwd"

# Store user settings
ynh_app_setting_set --app=$app --key=admin --value=$admin
ynh_app_setting_set --app=$app --key=hashedpassword --value=$hashedpassword

#=================================================
# LINK CERTIFICATES
#=================================================

# Even though one can stay in HTTP mode, the ztncui requires SSL certificates
# let's use the ones of the domain
pushd $final_path/src/etc/tls
	cp /etc/yunohost/certs/$domain/key.pem privkey.pem
	cp /etc/yunohost/certs/$domain/crt.pem fullchain.pem
popd

#=================================================
# SETUP SYSTEMD
#=================================================
ynh_script_progression --message="Configuring a systemd service..." --weight=1

# Create a dedicated systemd config
ynh_add_systemd_config

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

# Set permissions to app files
chown -R $app: $final_path

#=================================================
# SETUP LOGROTATE
#=================================================
ynh_script_progression --message="Configuring log rotation..." --weight=1

# Use logrotate to manage application logfile(s)
ynh_use_logrotate

#=================================================
# INTEGRATE SERVICE IN YUNOHOST
#=================================================
ynh_script_progression --message="Integrating service in YunoHost..." --weight=1

yunohost service add $app --description "ZeroTier network controller user interface" --log "/var/log/$app/$app.log"

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

# Start a systemd service
ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"

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

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

#=================================================
# RELOAD NGINX
#=================================================
ynh_script_progression --message="Reloading nginx web server..." --weight=1

ynh_systemd_action --service_name=nginx --action=reload

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

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