<?php
// $Id: subscriptions_blog_ui.module,v 1.6 2009/02/12 15:26:56 salvis Exp $

/**
 * @file
 * Provide a Subscriptions UI for the blog content type subscriptions
 */

/**
 * Implementation of hook_subscriptions().
 *
 * @ingroup hooks
 */
function subscriptions_blog_ui_subscriptions($op, $arg0 = NULL, $arg1 = NULL, $arg2 = NULL) {
  $function = '_subscriptions_blog_ui_'. $op;
  if (function_exists($function)) {
    return $function($arg0, $arg1, $arg2);
  }
  if ($op == 'stype' && $arg0 == 'blog') {
    return array('node', 'type', 'blog', $arg1);
  }
}

/**
 * Implementation of hook_types(), subhook of hook_subscriptions().
 *
 * This is called by subscriptions_types() in subscriptions.module.
 *
 * @return
 *   Returns information about types for the Subscriptions module interface.
 *
 * @ingroup form
 * @ingroup hooks
 *
 * @see subscriptions_types()
 */
function _subscriptions_blog_ui_types() {
  $tr = 't';
  $types['blog'] = array(
    'title' => $tr('Blogs'),
    'access' => 'subscribe to blogs',
    'page' => 'subscriptions_blog_ui_page_blog',
    'fields' => array('blog', 'author_uid'),
    'weight' => -3,
  );
  return $types;
  t('subscribe to blogs');
}

/**
 * Returns a list of blog subscriptions.
 *
 * @ingroup form
 */
function subscriptions_blog_ui_page_blog($account, $form) {
  $blogs = array();
  // get the blogs
  $sql = db_rewrite_sql("
    SELECT u.uid, u.name
    FROM {node} n
    INNER JOIN {users} u ON n.uid = u.uid
    WHERE n.type = 'blog' AND n.status = 1
    GROUP BY u.uid
    ORDER BY u.name");
  $result = db_query($sql);
  while ($usr = db_fetch_array($result)) {
    $blogs[$usr['uid']] = array(
      'uid' => $usr['uid'],
      'name' => $usr['name'],
      'has_blog' => TRUE,
    );
  }

  // possibly additional blog subscription entries (no blog nodes)
  if (isset($account)) {
    $result = db_query("
      SELECT s.author_uid, u.name
      FROM {subscriptions} s
      INNER JOIN {users} u ON s.author_uid = u.uid
      WHERE s.module = 'node' AND s.field = 'type' AND s.value = 'blog' AND s.recipient_uid = %d
      ORDER BY u.name", $account->uid);
    while ($usr = db_fetch_array($result)) {
      $blogs[$usr['author_uid']]['uid'] = $usr['author_uid'];
      $blogs[$usr['author_uid']]['name'] = $usr['name'];
    }
  }

  if (!empty($blogs)) {
    return drupal_get_form('subscriptions_blog_ui_blog_form', $blogs, $account, $form);
  }
  else {
    return t('There are no active blogs.');
  }
}

/**
 * Returns the blog subscription form.
 *
 * @ingroup form
 */
function subscriptions_blog_ui_blog_form(&$form_state, $blogs, $account, $form) {
  $uid = (isset($account) ? $account->uid : (is_numeric(arg(5)) ? -arg(5) : -DRUPAL_AUTHENTICATED_RID));
  $subscriptions = array();
  $result = db_query("
    SELECT s.value, s.send_interval, s.author_uid, s.send_comments, s.send_updates, u.name
    FROM {subscriptions} s
    INNER JOIN {users} u ON s.author_uid = u.uid
    WHERE s.module = 'node' AND s.field = 'type' AND s.value = 'blog' AND s.recipient_uid = %d
    ORDER BY u.name", $uid);
  while ($s = db_fetch_array($result)) {
    $subscriptions[$s['author_uid']] = $s;
  }
  $form[0] = array(
    '#type' => 'item',
    '#title' => '',
    '#tree' => TRUE,
    '#theme' => 'subscriptions_form_table',
  );

  $intervals = _subscriptions_send_intervals();
  foreach ($blogs as $blog) {
    $title = ($blog['has_blog'] ? l($blog['name'], 'blog/'. $blog['uid']) : $blog['name']);
    // add the active subscriptions
    if (!isset($subscriptions[$blog['uid']])) {
      // author-less item is missing -- add it here:
      $subscriptions[$blog['uid']] = array(
        'send_interval' => _subscriptions_get_setting('send_interval', ($uid < 0 ? $uid : $account)),
        'send_comments' => _subscriptions_get_setting('send_comments', ($uid < 0 ? $uid : $account)),
        'send_updates' => _subscriptions_get_setting('send_updates', ($uid < 0 ? $uid : $account)),
      );
    }
    subscriptions_form_helper($form[0], $defaults, $blog['uid'], 'blog', $title, $subscriptions[$blog['uid']]);
  }
  unset($form[0]['author']);
  $form[0]['defaults'] = array(
    '#type' => 'value',
    '#value' => $defaults,
  );
  subscriptions_form_column_filter($form[0], $uid);

  $form['#tree'] = TRUE;
  $form['uid'] = array('#type' => 'value', '#value' => $uid);
  $form['access_key'] = array('#type' => 'value', '#value' => 'blog');
  $form['module'] = array('#type' => 'value', '#value' => 'node');
  $form['field'] = array('#type' => 'value', '#value' => 'type');
  $form['submit'] = array('#type' => 'submit', '#value' => t('Save'), '#weight' => 10);
  $form['#submit'][] = 'subscriptions_page_form_submit';
  return $form;
}

/**
 * Implementation of hook_count_user_subscriptions().
 *
 * @ingroup hooks
 */
function subscriptions_blog_ui_count_user_subscriptions($counts, $uid) {
  $counts['blog']['author_uid'] = db_result(db_query("SELECT count(*) FROM {subscriptions} WHERE module = 'node' AND field = 'type' AND value = 'blog' AND recipient_uid = %d", $uid));
  return $counts;
}