<?php
// $Id$

function tracker_help() {
  $output .= "The tracker module is a handy module for displaying the most recent comments happenning all over your web site.  By following the <i>view new comments</i> link in the user block, a user may quickly review all recent comments.  When a user first arrives at the main tracker page, she sees all recent comments in reverse chronological order, grouped by post.  In addition, a self-centered user may choose to display only his own comments.</p>";
  return $output;
}

function tracker_system($field){
  $system["description"] = t("Enables tracking of recent and new comments for users.");
  return $system[$field];
}

function tracker_link($type) {

  if ($type == "menu.view" && user_access("access comments")) {
    $links[] = lm(t("view new comments"), array("mod" => "tracker"), "", array("title" => t("Display an overview of the recent comments.")));
  }

  return $links ? $links : array();
}

function tracker_conf_options() {
  $period = array(3600 => format_interval(3600), 10800 => format_interval(10800), 21600 => format_interval(21600), 32400 => format_interval(32400), 43200 => format_interval(43200), 86400 => format_interval(86400), 172800 => format_interval(172800), 259200 => format_interval(259200), 604800 => format_interval(604800), 1209600 => format_interval(1209600), 2419200 => format_interval(2419200), 1000000000 => "All");
  $output .= form_select("Show comments more recent than", "tracker_period", variable_get("tracker_period", 259200), $period, "Comments younger than this get displayed.");
  return $output;
}

function tracker_comments($id = 0) {
  $period = time() - variable_get("tracker_period", 259200);  // all comments of the past 3 days if not configured to a different value

  if ($id) {
    $sresult = db_query("SELECT n.nid, n.title, COUNT(n.nid) AS comments, MAX(c.timestamp) AS last_comment FROM comments c LEFT JOIN node n ON c.nid = n.nid WHERE c.status = 0 AND c.timestamp > $period AND c.uid = '%s' GROUP BY n.nid, n.title ORDER BY last_comment DESC LIMIT 10", $id);
  }
  else {
    $sresult = db_query("SELECT n.nid, n.title, COUNT(n.nid) AS comments, MAX(c.timestamp) AS last_comment FROM comments c LEFT JOIN node n ON c.nid = n.nid WHERE c.status = 0 AND c.timestamp > $period GROUP BY n.nid, n.title ORDER BY last_comment DESC LIMIT 10");
  }

  while ($node = db_fetch_object($sresult)) {
    $output .= format_plural($node->comments, "comment", "comments") ." ". t("attached to node") ." ". l(check_output($node->title), array("id" => $node->nid)) .":\n";

    if ($id) {
      $cresult = db_query("SELECT c.*, u.name FROM comments c LEFT JOIN users u ON c.uid = u.uid WHERE c.timestamp > $period AND c.uid = '%d' AND c.nid = '%d' ORDER BY cid DESC", $id, $node->nid);
    }
    else {
      $cresult = db_query("SELECT c.*, u.name FROM comments c LEFT JOIN users u ON c.uid = u.uid WHERE c.timestamp > $period AND c.nid = '%d' ORDER BY cid DESC", $node->nid);
    }

    $output .= "<ul>";
    while ($comment = db_fetch_object($cresult)) {
      $output .= " <li>". l(check_output($comment->subject), array("id" => $node->nid, "cid" => $comment->cid, "pid" => $comment->pid), "node", $comment->cid) ." ". t("by") ." ". format_name($comment) ." (". t("replies") .": ". comment_num_replies($comment->cid) .") ". (comment_is_new($comment) ? theme_invoke("theme_mark") : "") ."</li>\n";
    }
    $output .= " </ul>\n";
  }

  return $output;
}

function tracker_menu() {
  global $user;

  $links[] = lm(t("your recent comments"), array("mod" => "tracker", "id" => $user->uid), "", array("title" => t("Display an overview of your recent comments.")));
  $links[] = lm(t("all recent comments"), array("mod" => "tracker"), "", array("title" => t("Display an overview of all the recent comments.")));

  return "<div align=\"center\">". implode(" &middot; ", $links) ."</div>";
}


function tracker_page() {
  global $theme, $id, $user;

  if (user_access("access comments")) {
    if ($id == $user->uid) {
      $theme->header(t("Your recent comments"));
      $theme->box(t("Tracker"), tracker_menu());
      $theme->box(t("Your recent comments"), tracker_comments($id));
      $theme->footer();
    }
    else if ($id) {
      $account = user_load(array("uid" => $id));
      $theme->header(t("%u's recent comments", array("%u" => $account->name)));
      $theme->box(t("Tracker"), tracker_menu());
      $theme->box(t("%u's recent comments", array("%u" => $account->name)), tracker_comments($id));
      $theme->footer();
    }
    else {
      $theme->header(t("All recent comments"));
      $theme->box(t("Tracker"), tracker_menu());
      $theme->box(t("All recent comments"), tracker_comments());
      $theme->footer();
    }
  }
}

function tracker_user($type, &$edit, &$user) {
  switch ($type) {
    case "view_public":
    case "view_private":
      if (user_access("access comments")) {
        return form_item(t("Comments"), lm(t("view recent comments"), array("mod" => "tracker", "id" => $user->uid), "", array("title" => t("View recent comments."))));
      }
  }
}
?>