#!/bin/bash

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

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

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

upgrade_type=$(ynh_check_app_version_changed)

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

ynh_systemd_action --service_name=$app --action="stop" --log_path="systemd"

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

# Flows were stored in file named after the hostname.
# Not very portable. Let's fix that.
if [[ ! -f "$install_dir/data/flows.json" && -f "$install_dir/data/flows_$(hostname).json" ]]; then
	mv "$install_dir/data/flows_$(hostname)_cred.json" "$install_dir/data/flows_cred.json"
	mv "$install_dir/data/flows_$(hostname).json" "$install_dir/data/flows.json"
# Flows could be stored in a file named '>>'.
# Definitely weird, let's fix that.
elif [[ ! -f "$install_dir/data/flows.json" && -f "$install_dir/data/>>" ]]; then
	mv "$install_dir/data/>>_cred" "$install_dir/data/flows_cred.json"
	mv "$install_dir/data/>>" "$install_dir/data/flows.json"
fi

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

if [ "$upgrade_type" == "UPGRADE_APP" ]
then
	ynh_script_progression --message="Upgrading source files..." --weight=2

	# Download, check integrity, uncompress and patch the source from app.src
	ynh_setup_source --dest_dir="$install_dir"
fi

chown -R $app: "$install_dir"

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

# Create a dedicated NGINX config
ynh_add_nginx_config

ynh_install_nodejs --nodejs_version=$nodejs_version

# Create a dedicated systemd config
ynh_add_systemd_config

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

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

pushd $install_dir
	ynh_use_nodejs
    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

#=================================================
# UPDATE A CONFIG FILE
#=================================================
ynh_script_progression --message="Updating a configuration file..."

# Set up the settings file
ynh_add_config --template="../conf/settings.js" --destination="$install_dir/data/settings.js"
chmod 400 "$install_dir/data/settings.js"
chown $app:$app "$install_dir/data/settings.js"

if [[ ! -f "$install_dir/data/settings.user.js" ]] ; then
    ynh_add_config --template="../conf/settings.user.js" --destination="$install_dir/data/settings.user.js"
    chmod 400 "$install_dir/data/settings.user.js"
	chown $app:$app "$install_dir/data/settings.user.js"
fi

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

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

ynh_systemd_action --service_name=$app --action="start" --log_path="systemd"

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

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