#!/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
#=================================================

domain=$YNH_APP_ARG_DOMAIN
path_url=$YNH_APP_ARG_PATH
admin=$YNH_APP_ARG_ADMIN
is_public=$YNH_APP_ARG_IS_PUBLIC
app=$YNH_APP_INSTANCE_NAME

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

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=$app --key=path --value=$path_url

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

# Find a free port
port=$(ynh_find_port --port=1880)
ynh_app_setting_set --app=$app --key=port --value=$port

#=================================================
# INSTALL NODEJS
#=================================================

ynh_install_nodejs --nodejs_version=$nodejs_version

#=================================================
# 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"

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

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

#=================================================
# Install through npm
#=================================================
ynh_script_progression --message="Installing Node-RED..." --weight=5

ynh_use_nodejs
chown -R $app: "$final_path"

pushd $final_path
	ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm install --production
	ynh_exec_warn_less ynh_exec_as $app $ynh_node_load_PATH $ynh_npm install node-red-dashboard
popd

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

# Create a dedicated NGINX config
ynh_add_nginx_config

#=================================================
# SPECIFIC SETUP
#=================================================

# Set up the settings file
mkdir -p $final_path/data
ynh_add_config --template="../conf/settings.js" --destination="$final_path/data/settings.js"
ynh_add_config --template="../conf/settings.user.js" --destination="$final_path/data/settings.user.js"

# Small hack to have the "/" path answer with a 200 code to satisfy the CI
if [[ "${PACKAGE_CHECK_EXEC:-}" = "1" ]] ; then
    ynh_add_config --template="../conf/flows.json" --destination="$final_path/data/flows.json"
fi

#=================================================
# SECURE FILES AND DIRECTORIES
#=================================================

chmod 750 "$final_path"
chmod -R o-rwx "$final_path"
chown -R $app: "$final_path"
# make settings.js readonly
chmod a-w "$final_path/data/settings.js"

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

# Create a dedicated systemd config
ynh_add_systemd_config

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

yunohost service add $app --description="Low-code programming for event-driven applications"

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

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

#=================================================
# SETUP SSOWAT
#=================================================
ynh_script_progression --message="Configuring permissions..." --weight=1

# The "main" permission is automatically created before the install script.
# Here we use it for the endpoints root, they should be world-accessible by default
# Since it is meant for automated actions, we hide the tile from the SSO
ynh_permission_create --permission="endpoints" --url="/" --show_tile=false

# Create the dashboard UI permission
ynh_permission_create --permission="ui" --url="/ui" --show_tile=true

# Reuse the main permission for the admin
ynh_permission_url --permission="main" --url="/admin"
ynh_permission_update --permission="main" --add="$admin" --remove="all_users" --show_tile=true

# Make the dashboard public if necessary
if [ $is_public -eq 1 ]
then
	ynh_permission_update --permission="ui" --add="visitors"
	ynh_permission_update --permission="endpoints" --add="visitors"
else
	ynh_permission_update --permission="ui" --add="$admin"
	ynh_permission_update --permission="endpoints" --add="$admin"
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 Node-RED completed" --last