<?php

/**
 * @file
 * Provides a 'maillog' node type
 *
 * @todo: better implementation of detail link
 *
 *
 * Extensibility of maillog engines is based on the mimemail engine hooks.
 * See mimemail_get_engines in mimemail.module with
 * Please install mimemail to make the outgoing engine pluggable.
 *
 * mail flow:
 * drupal_mail -> maillog:drupal_mail_wrapper -> maillog_mail_send
 * mimemail -> maillog_mailengine -> maillog_mail_send [-> ANY_engine]
 */

/**
 * Implementation of hook_permision().
 */
function maillog_permission() {
  return array('view maillog' => array(
     'title' => t('View Maillog'),
     'description' => t('Allow users to view a list of recently logged mails.'),
  ),
 'delete maillog' => array(
     'title' => t('Delete Entries from the log'),
     'description' => t('Allow users to delete logged mails.'),
  ),
    'administer maillog' => array(
     'title' => t('Administer Maillog'),
     'description' => t('Allow users to change maillog seetings.'),
  )
  );
}

function maillog_maillog_delete($maillog) {
  $idmaillog = $maillog['idmaillog'];
  $result = db_query("DELETE FROM {maillog} WHERE idmaillog = :id", array(':id' => $idmaillog));
  if ($result == FALSE) {
    drupal_set_message(t('A Problem occured when deleting Mail with idmaillog !idmaillog !', array('!idmaillog' => $idmaillog)));
  }
  else {
    drupal_set_message(t('Mail with idmaillog !idmaillog has been deleted!', array('!idmaillog' => $idmaillog)));
  }
  drupal_goto('admin/reports/maillog');
}

/**
 * Implementation of hook_menu().
 */
function maillog_menu() {
  $items = array();

  $items['admin/config/development/maillog'] = array(
    'title' => t('Maillog Settings'),
    'description' => t('Configure the settings of Maillog module.'),
    'page callback' => 'drupal_get_form',
    'page arguments' => array('maillog_admin_settings'),
    'access arguments' => array('administer maillog'),
    'type' => MENU_NORMAL_ITEM,
  );

  $items['maillog/delete/%maillog_maillog'] = array(
    'title' => t("Delete Maillog from 'maillog' Table"),
    'description' => t("Delete the Maillog with the idmaillog given by the parameter from 'maillog' Table"),
    'page callback' => 'maillog_maillog_delete',
    'page arguments' => array(2),
    'access arguments' => array('delete maillog'),
    'type' => MENU_CALLBACK,
  );
  $items['maillog/details/%maillog_maillog'] = array(
    'title callback' => 'maillog_maillog_title',
    'title arguments' => array(2),
    'description' => t("Delete the Maillog with the idmaillog given by the parameter from 'maillog' Table"),
    'page callback' => 'maillog_maillog_page',
    'page arguments' => array(2),
    'access arguments' => array('view maillog'),
    'type' => MENU_CALLBACK,
  );

  return $items;
}

/**
 *
 */
function maillog_maillog_title($maillog) {
  return $maillog['subject'];
}

/**
 *
 */
function maillog_maillog_load($idmaillog) {
  $result = db_query("SELECT idmaillog, header_from, header_to, header_reply_to, header_all, subject, body FROM {maillog} WHERE idmaillog=:id", array(
    ':id' => $idmaillog,
  ));
  if ($result == FALSE) {
    $maillog = NULL;
  }
  else {
    $maillog = $result->fetchAssoc();
    // unserialize values
    $maillog['header_all'] = unserialize($maillog['header_all']);
  }
  return $maillog;
}

/**
 *
 */
function maillog_maillog_page($maillog) {
  return theme('maillog', array('maillog' => $maillog));
}

/**
 * Implementation of the module settings form.
 */
function maillog_admin_settings() {
  $form = array();

  $form['maillog_send'] = array(
    '#type' => 'checkbox',
    '#title' => t("Allow the e-mails to be sent."),
    '#default_value' => variable_get('maillog_send', TRUE),
  );

  $form['maillog_log'] = array(
    '#type' => 'checkbox',
    '#title' => t("Create table entries in maillog table for each e-mail."),
    '#default_value' => variable_get('maillog_log', TRUE),
  );

  $form['maillog_devel'] = array(
    '#type' => 'checkbox',
    '#title' => t("Display the e-mails on page using devel module (if enabled)."),
    '#default_value' => variable_get('maillog_devel', TRUE),
  );
  if (module_exists('mimemail')) {
    $engines = mimemail_get_engines();
    // maillog will be unset, because ist would cause an recursion
    unset($engines['maillog']);
    $form['maillog_engine'] = array(
      '#type' => 'select',
      '#title' => t("Select the mailengine which should be used."),
      '#default_value' => variable_get('maillog_engine', 'mimemail'),
      '#options' => $engines,
    );
  }
  return system_settings_form($form);
}

/**
 * Implementation of hook_views_api().
 */
function maillog_views_api() {
  return array(
    'api' => 3,
    'path' => drupal_get_path('module', 'maillog') . '/includes/',
  );
}

/**
 * Implementation of hook_theme().
 */
function maillog_theme() {
  return array(
    'maillog_header_from' => array(
      'variables' => array('header_from' => NULL),
    ),
    'maillog_header_to' => array(
      'variables' => array('header_to' => NULL),
    ),
    'maillog_header_reply_to' => array(
      'variables' => array('header_reply_to' => NULL),
    ),
    'maillog_header_all' => array(
      'variables' => array('header_all' => NULL),
    ),
    'maillog_body' => array(
      'variables' => array('body' => NULL),
    ),
    'maillog' => array(
      'variables' => array('maillog' => NULL),
    ),
  );
}

/**
 * Render the 'From' field in the node type 'Logged Mail'
 */
function theme_maillog_header_from($variables) {
  $output = '';

  $output .= '<div class="field mail-log-header-from">';
  $output .= '<div class="field-label">' . t('From') . ':</div>';
  $output .= '<div class="field-item">' . check_plain($variables['header_from']) . '</div>';
  $output .= '</div>';

  return $output;
}

/**
 *
 */
function theme_maillog($variables) {
  $output = theme( 'maillog_header_from', array('header_from' => $variables['maillog']['header_from']) );
  $output .= theme( 'maillog_header_to', array('header_to' => $variables['maillog']['header_to']) );
  $output .= theme( 'maillog_header_reply_to', array('header_reply_to' => $variables['maillog']['header_reply_to']) );
  $output .= theme( 'maillog_header_all', array('header_all' => $variables['maillog']['header_all']) );
  $output .= theme( 'maillog_body', array('body' => $variables['maillog']['body']) );
  return $output;
}


/**
 * Render the 'To' field in the node type 'Logged Mail'
 */
function theme_maillog_header_to($variables) {
  $output = '';

  $output .= '<div class="field mail-log-header-to">';
  $output .= '<div class="field-label">' . t('To') . ':</div>';
  $output .= '<div class="field-item">' . check_plain($variables['header_to']) . '</div>';
  $output .= '</div>';

  return $output;
}

/**
 * Render the 'Reply-To' field in the node type 'Logged Mail'
 */
function theme_maillog_header_reply_to($variables) {
  $output = '';

  $output .= '<div class="field mail-log-header-reply-to">';
  $output .= '<div class="field-label">' . t('Reply To') . ':</div>';
  $output .= '<div class="field-item">' . check_plain($variables['header_reply_to']) . '</div>';
  $output .= '</div>';

  return $output;
}

/**
 * Render the 'Header' field in the node type 'Logged Mail'
 */
function theme_maillog_header_all($variables) {
  $output = '';

  $output .= '<div class="field mail-log-header-all">';
  $output .= '<div class="field-label">' . t('Header') . ':</div>';
  $output .= '<div class="field-item">';

  foreach ($variables['header_all'] as $header_all_name => $header_all_value) {
    $output .= '<div class="mail-log-header-all-subitem">';
    $output .= check_plain($header_all_name) . ': ' . check_plain($header_all_value);
    $output .= '</div>';
  }

  $output .= '</div>';
  $output .= '</div>';

  return $output;
}

/**
 * Render the 'Body' field in the node type 'Logged Mail'
 */
function theme_maillog_body($variables) {
  $output = '';

  $output .= '<div class="field mail-log-body">';
  $output .= '<div class="field-label">' . t('Body') . ':</div>';
  $output .= '<div class="field-item">';
  $output .= '<pre>';
  $output .= check_plain($variables['body']);
  $output .= '</pre>';
  $output .=  '</div>';
  $output .= '</div>';

  return $output;
}