<?php

/**
 * Implementation of hook_hook_info().
 */
function anonymous_contact_hook_info() {
	return array(
		'anonymous_contact' => array(
			'anonymous_contact' => array(
				'user_contact_form_sent' => array(
					'runs when' => t('Site visitor submitted a user contact form')
				)
			)
		)
	);
}

/**
 * Implementation of hook_trigger_name().
 */
function anonymous_contact_anonymous_contact($op, $user, $form_values) {
	if (!in_array($op, array('user_contact_form_sent'))) {
		return;
	}
	$aids = _trigger_get_hook_aids('anonymous_contact', $op);
	$context = array(
		'hook' 				=> 'anonymous_contact',
		'op' 					=> $op,
		'user' 				=> $user,
		'form_values' => $form_values
	);
	actions_do(array_keys($aids), $user, $context);
}

/**
 * Implementation of hook_action_info().
 */
function anonymous_contact_action_info() {
  return array(
    'anonymous_contact_send_email_action' => array(
      'description' => t('Send e-mail about user contact form'),
      'type' => 'anonymous_contact',
      'configurable' => TRUE,
      'hooks' => array(
        'anonymous_contact' => array('user_contact_form_sent')
      )
    )
  );
}

/**
 * Define recipient for the action.
 *
 * @see anonymous_contact_send_email_action_validate()
 * @see anonymous_contact_send_email_action_submit()
 * @param $context
 *   Default values (if we are editing an existing action instance).
 * @return
 *   Form definition.
 */
function anonymous_contact_send_email_action_form($context) {
  if (!isset($context['recipient'])) {
    $context['recipient'] = '';
  }
  if (!isset($context['subject'])) {
    $context['subject'] = '';
  }
  if (!isset($context['message'])) {
    $context['message'] = '';
  }

  $form['recipient'] = array(
    '#type' => 'textfield',
    '#title' => t('Recipient'),
    '#default_value' => $context['recipient'],
    '#maxlength' => '254',
    '#description' => t('The email address to which the message should be sent.'),
  );
  $form['subject'] = array(
    '#type' => 'textfield',
    '#title' => t('Subject'),
    '#default_value' => $context['subject'],
    '#maxlength' => '254',
    '#description' => t('The subject of the message.'),
  );
  $form['message'] = array(
    '#type' => 'textarea',
    '#title' => t('Message'),
    '#default_value' => $context['message'],
    '#cols' => '80',
    '#rows' => '20',
    '#description' => t('The message that should be sent. You may include the following variables: %recipient, %sender_name, %sender_mail, %subject, %body.'),
  );
  return $form;
}

/**
 * Validate anonymous_contact_send_email_action form submissions.
 */
function anonymous_contact_send_email_action_validate($form, $form_state) {
  $form_values = $form_state['values'];
  if (!valid_email_address($form_values['recipient'])) {
    form_set_error('recipient', t('Please enter a valid email address.'));
  }
}

/**
 * Process anonymous_contact_send_email_action form submissions.
 */
function anonymous_contact_send_email_action_submit($form, $form_state) {
  $form_values = $form_state['values'];
	$params = array(
    'recipient' => $form_values['recipient'],
    'subject'   => $form_values['subject'],
    'message'   => $form_values['message']
  );
  return $params;
}

/**
 * Implementation of Drupal action.
 */
function anonymous_contact_send_email_action($object, $context) {
  global $user;
	
  $recipient = $context['recipient'];
	$language = user_preferred_language($account);
  $params = array('account' => $context['form_values']['recipient'], 'fake_account' => $context['form_values']['user'], 'context' => $context);
	
  if (drupal_mail('anonymous_contact', 'action_send_email', $recipient, $language, $params)) {
		watchdog('action', 'Sent email to %recipient', array('%recipient' => $recipient));
  }
  else {
		watchdog('error', 'Unable to send email to %recipient', array('%recipient' => $recipient));
  }
}

/**
 * Addition to hook_mail().
 */
function anonymous_contact_mail($key, &$message, $params) {
	case 'action_send_email':
		$variables = array(
			'%site_name' 		=> variable_get('site_name', 'Drupal'),
			'%recipient' 		=> $params['context']['user']->name,
			'%sender_name' 	=> $params['context']['form_values']['user']->name,
			'%sender_mail' 	=> $params['context']['form_values']['user']->mail,
			'%subject' 			=> $params['context']['form_values']['subject'],
			'%body' 				=> nl2br($params['context']['form_values']['message'])
		);
		
		$subject 	= strtr($params['context']['subject'], $variables);
		$body 		= strtr($params['context']['message'], $variables);
		$message['subject'] = $subject;
		$message['body'][] = drupal_html_to_text($body);
		break;
}