require_once('vendor/autoload.php');

require_once('path/to/pushpad-php/init.php');

Pushpad\Pushpad::$auth_token = '5374d7dfeffa2eb49965624ba7596a09';
Pushpad\Pushpad::$project_id = 123; # set it here or pass it as a param to methods later

Pushpad\Pushpad::signature_for($current_user_id);

$notification = new Pushpad\Notification(array(
  'body' => "Hello world!",
  'title' => "Website Name", # optional, defaults to your project name
  'target_url' => "https://example.com", # optional, defaults to your project website
  'icon_url' => "https://example.com/assets/icon.png", # optional, defaults to the project icon
  'badge_url' => "https://example.com/assets/badge.png", # optional, defaults to the project badge
  'image_url' => "https://example.com/assets/image.png", # optional, an image to display in the notification content
  'ttl' => 604800, # optional, drop the notification after this number of seconds if a device is offline
  'require_interaction' => true, # optional, prevent Chrome on desktop from automatically closing the notification after a few seconds
  'silent' => false, # optional, enable this option if you want a mute notification without any sound
  'urgent' => false, # optional, enable this option only for time-sensitive alerts (e.g. incoming phone call)
  'custom_data' => "123", # optional, a string that is passed as an argument to action button callbacks
  # optional, add some action buttons to the notification
  # see https://pushpad.xyz/docs/action_buttons
  'actions' => array(
    array(
      'title' => "My Button 1",
      'target_url' => "https://example.com/button-link", # optional
      'icon' => "https://example.com/assets/button-icon.png", # optional
      'action' => "myActionName" # optional
    )
  ),
  'starred' => true, # optional, bookmark the notification in the Pushpad dashboard (e.g. to highlight manual notifications)
  # optional, use this option only if you need to create scheduled notifications (max 5 days)
  # see https://pushpad.xyz/docs/schedule_notifications
  'send_at' => strtotime('2016-07-25 10:09'), # use a function like strtotime or time that returns a Unix timestamp
  # optional, add the notification to custom categories for stats aggregation
  # see https://pushpad.xyz/docs/monitoring
  'custom_metrics' => array('examples', 'another_metric') # up to 3 metrics per notification
));

# deliver to a user
$notification->deliver_to($user_id);

# deliver to a group of users
$notification->deliver_to($user_ids);

# deliver to some users only if they have a given preference
# e.g. only $users who have a interested in "events" will be reached
$notification->deliver_to($users, ["tags" => ["events"]]);

# deliver to segments
# e.g. any subscriber that has the tag "segment1" OR "segment2"
$notification->broadcast(["tags" => ["segment1", "segment2"]]);

# you can use boolean expressions 
# they must be in the disjunctive normal form (without parenthesis)
$notification->broadcast(["tags" => ["zip_code:28865 && !optout:local_events || friend_of:Organizer123"]]);
$notification->deliver_to($users, ["tags" => ["tag1 && tag2", "tag3"]]); # equal to "tag1 && tag2 || tag3"

# deliver to everyone
$notification->broadcast();