#!/bin/bash

# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

set -e

LOGOUT_MSG="
Name: Please log out to update
Priority: Medium
OnlyAdminUsers: False
DontShowAfterReboot: true
DisplayIf: /opt/google/chrome-remote-desktop/is-remoting-session
Description: Chrome Remote Desktop has been updated. Please save your work and log out in order to apply this update. Your virtual desktop will be restarted automatically.
"

NOTIFIER_DIR="/var/lib/update-notifier/user.d"
VAR_DIR="/var/lib/chrome-remote-desktop"
HASHES_FILE="$VAR_DIR/hashes"

case "$1" in
  "configure")
    # Kill host processes. The wrapper script will restart them.
    # TODO(lambroslambrou): Remove the '-9' when the underlying problem with
    # hosts not responding to SIGTERM has been fixed - http://crbug.com/420090
    echo "Shutting down Chrome Remote Desktop hosts (they will restart automatically)..."
    killall -9 -q chrome-remote-desktop-host || true
    # If any files have changed that require the user to restart their virtual
    # desktops (eg, the wrapper script itself) then notify them but don't do
    # anything that would result in them losing state.
    if [ -f "$HASHES_FILE" ]; then
      if [ -d "$NOTIFIER_DIR" ]; then
        if ! md5sum --status -c "$HASHES_FILE" 2>/dev/null; then
          echo "Sending logout notification messages to virtual desktops."
          echo "$LOGOUT_MSG" > "$NOTIFIER_DIR/chrome-remote-desktop-logout"
        fi
      fi
      rm "$HASHES_FILE"
      rmdir --ignore-fail-on-non-empty "$VAR_DIR"
    fi
    ;;
esac

# Create defaults file.
DEFAULTS_FILE="/etc/default/chrome-remote-desktop"
if [ ! -e "$DEFAULTS_FILE" ]; then
  echo 'repo_add_once="true"' > "$DEFAULTS_FILE"
  echo 'repo_reenable_on_distupgrade="true"' >> "$DEFAULTS_FILE"
fi

# Run the cron job immediately to perform repository configuration.
nohup sh /etc/cron.daily/chrome-remote-desktop > /dev/null 2>&1 &

#DEBHELPER#