#!/bin/bash

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

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

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

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

#=================================================
# 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 "$install_dir/data/flows.json" ]]; then
    if [[ -f "$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" "$install_dir/data/flows.json"
    elif [[ -f "$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
fi

# Remove logrotate and log directory, we use syslog now
if [[ -d "/etc/logrotate.d/$app" ]]; then
    ynh_remove_logrotate
    ynh_secure_remove --file="/var/log/$app"
fi

# In older versions of the package, the port serving the webui was opened to anyone,
# allowing direct access to Node-RED... let's close it.
if yunohost firewall list | grep -q "\- $port$"; then
    ynh_exec_warn_less yunohost firewall disallow TCP $port
fi

#=================================================
# UPGRADE NODEJS
#=================================================
ynh_script_progression --message="Upgrading NodeJS..."

ynh_install_nodejs --nodejs_version="$nodejs_version"

#=================================================
# DOWNLOAD, CHECK AND UNPACK SOURCE
#=================================================
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" --full_replace=1 --keep="data"

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

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

ynh_use_nodejs

pushd "$install_dir"
    ynh_exec_warn_less ynh_exec_as "$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="settings.js" --destination="$install_dir/data/settings.js"
if [[ ! -f "$install_dir/data/settings.user.js" ]] ; then
    ynh_add_config --template="settings.user.js" --destination="$install_dir/data/settings.user.js"
fi

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

chmod 400 "$install_dir/data/settings.js"
chmod -R o-rwx "$install_dir"
chown -R "$app:www-data" "$install_dir"

#=================================================
# REAPPLY SYSTEM CONFIGURATIONS
#=================================================
ynh_script_progression --message="Upgrading system configurations related to $app..." --weight=1

# Create a dedicated NGINX config
ynh_add_nginx_config

# Create a dedicated systemd config
ynh_add_systemd_config
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

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

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

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