Custom hook example: Give users points on their birthday (BuddyPress Version). The birthday date must be stored as a custom XProfile field in BuddyPress.

mycred-bp-birthday-hook-example

/**
 * Register Birthday Hook
 * @version 1.0
 */
add_filter( 'mycred_setup_hooks', 'mycred_pro_register_bp_birthday_hook' );
function mycred_pro_register_bp_birthday_hook( $installed ) {

	$installed['birthday'] = array(
		'title'       => '%plural% for Birthdays',
		'description' => 'Reward users with points on their birthday',
		'callback'    => array( 'myCRED_BP_Birthday_Hook' )
	);

return $installed;

}

/**
 * Load Birthday Hook
 * @version 1.0
 */
add_action( 'mycred_load_hooks', 'mycred_pro_load_bp_birthday_hook' );
function mycred_pro_load_bp_birthday_hook() {

	// Backwatds comp. pre 1.7
	if ( ! defined( 'MYCRED_DEFAULT_TYPE_KEY' ) ) define( 'MYCRED_DEFAULT_TYPE_KEY', 'mycred_default' );

	class myCRED_BP_Birthday_Hook extends myCRED_Hook {

		/**
		 * Construct
		 */
		function __construct( $hook_prefs, $type = MYCRED_DEFAULT_TYPE_KEY ) {

			parent::__construct( array(
				'id'       => 'birthday',
				'defaults' => array(
					'format'       => 'Y-m-d',
					'field_id'     => 'birthday',
					'creds'        => 1,
					'log'          => '%plural% for birthday'
				)
			), $hook_prefs, $type );

		}

		/**
		 * Run
		 * Runs if the hook is enabled.
		 * @version 1.0
		 */
		public function run() {

			add_action( 'mycred_reset_key', array( $this, 'cron' ) );

		}

		/**
		 * Every day, check if anyone has a birthday today.
		 * Users can only get points if they are not excluded and if
		 * they have not recevied points already this year.
		 * @version 1.0
		 */
		public function cron() {

			global $wpdb, $bp;

			$now         = current_time( 'timestamp' );
			$todays_date = date( $this->prefs['format'], $now );
			$this_year   = date( 'Y', $now );

			$birthdays   = $wpdb->get_col( $wpdb->prepare( "SELECT user_id FROM {$bp->profile->table_name_data} WHERE field_id = %s AND value = %s;", $this->prefs['field_id'], $todays_date ) );

			if ( ! empty( $birthdays ) ) {
				foreach ( $birthdays as $user_id ) {

					if ( $this->core->exclude_user( $user_id ) ) continue;

					if ( ! $this->has_entry( 'birthday', $this_year, $user_id ) )
						$this->core->add_creds(
							'birthday',
							$user_id,
							$this->prefs['creds'],
							$this->prefs['log'],
							$this_year,
							'',
							$this->mycred_type
						);

				}
			}

		}

		/**
		 * Hook Settings
		 */
		 public function preferences() {

			$prefs = $this->prefs;

?>
<!-- First we set the amount -->
<label class="subheader"><?php echo $this->core->plural(); ?></label>
<ol>
	<li>
		<div class="h2"><input type="text" name="<?php echo $this->field_name( 'creds' ); ?>" id="<?php echo $this->field_id( 'creds' ); ?>" value="<?php echo $this->core->number( $prefs['creds'] ); ?>" size="8" /></div>
	</li>
</ol>
<!-- Then the log template -->
<label class="subheader">Log Template</label>
<ol>
	<li>
		<div class="h2"><input type="text" name="<?php echo $this->field_name( 'log' ); ?>" id="<?php echo $this->field_id( 'log' ); ?>" value="<?php echo esc_attr( $prefs['log'] ); ?>" class="long" /></div>
	</li>
</ol>
<!-- Field ID -->
<label class="subheader">BuddyPress Profile Field ID</label>
<ol>
	<li>
		<div class="h2"><input type="text" name="<?php echo $this->field_name( 'field_id' ); ?>" id="<?php echo $this->field_id( 'field_id' ); ?>" value="<?php echo esc_attr( $prefs['field_id'] ); ?>" class="long" /></div>
		<p>The ID of the field where users enter their birthday.</p>
	</li>
</ol>
<!-- Date Format -->
<label class="subheader">Date Format</label>
<ol>
	<li>
		<div class="h2"><input type="text" name="<?php echo $this->field_name( 'format' ); ?>" id="<?php echo $this->field_id( 'format' ); ?>" value="<?php echo esc_attr( $prefs['format'] ); ?>" class="long" /></div>
		<p>The format used when storing the users date of birth. Fields where the date is not formatted correctly will not receive a payout! Recommended either <code>Y-m-d</code> or <code>m/d/Y</code>. For a complete list of acceptable formats, see the <a href="http://php.net/manual/en/function.date.php" target="_blank">PHP documentation.</a></p>
	</li>
</ol>
<?php

		}

	}

}