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<?php

class Blog {
  function Blog($blog) {
    global $user;

    $this = new Node($blog);
    $this->title = $blog[title];
    $this->body = $blog[body];
    $this->userid = $blog[userid] ? $blog[userid] : $user->userid;
    $this->timestamp = $blog[timestamp];
  }
}

function blog_help() {
 ?>
  <p>Drupal's blog module allows registered users to maintain an online blog or diary.  It provides easy-to-write and easy-to-read online diaries or journals that can be filled with daily thoughts, poetry, boneless blabber, spiritual theories, intimate details, valuable experiences, cynical rants, semi-coherent comments, writing experiments, artistic babblings, critics on current facts, fresh insights, diverse dreams, chronicles and mumbling madness available for public consumption.</p>
  <p>TODO</p>:
  <p>Add an entry on the account display for another user, linked to module.php?mod=blog&name=$userid</p>
  <p>Provide links on other "Noded" module displays to allow the node to be blogged module.php?mod=blog&type=blog&id=$nid . Currently these are available on blogs and import displays.</p>
  <p>Combine the calendar display class with the node calendar display class.</p>
 <?php
}

function blog_perm() {
  return array("administer blogs", "access blogs", "post blogs");
}

function blog_page_all($num = 20) {
  global $theme, $user;

  $result = db_query("SELECT n.timestamp, n.title, u.userid, n.nid, b.body FROM blog b LEFT JOIN node n ON b.nid = n.nid LEFT JOIN users u ON n.author = u.id ORDER BY b.lid DESC LIMIT $num");

  while ($blog = db_fetch_object($result))  {
    $output .= "<a href=\"submit.php?mod=blog&type=blog&id=$blog->nid\"><img src=\"misc/blog.gif\" border=\"0\" width=\"12\" height=\"16\" alt=\"". t("Blog this item") ."\" /></a> <a href=\"module.php?mod=blog&name=". urlencode($blog->userid) ."\"><img src=\"misc/earth.gif\" border= \"0\" width=\"11\" height=\"11\" alt=\"". t("This blog") ."\" /></a> ". format_username($blog->userid) ." ". t("on") ." ". format_date($blog->timestamp) .":<br />";
    $output .= "<blockquote><b>". check_input($blog->title) ."</b><br />" . check_output($blog->body, 1) ."</blockquote>\n";
  }

  $theme->header();
  $theme->box(t("Latest blogs"), $output);
  $theme->footer();
}

function blog_page_user($userid = 0, $date = 0) {
  global $theme, $user;

  $userid = $userid ? $userid : $user->userid;

  $theme->header();

  if ($date) {

    /*
    ** Displays today's blogs for this user:
    */

    blog_page_day($userid, $date);
  }
  else {

    /*
    ** Display the last blogs for this user:
    */

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    $result = db_query("SELECT n.nid, n.timestamp FROM node n LEFT JOIN users u ON u.id = n.author WHERE n.type = 'blog' AND u.userid = '". check_input($userid) ."' AND n.timestamp > ". (time() - 2592000) ." ORDER BY n.timestamp DESC LIMIT 15");
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    while ($blog = db_fetch_object($result)) {
      if ($date != date("ndy", $blog->timestamp)) {
        $date = date("ndy", $blog->timestamp);
        blog_page_day($userid, $blog->timestamp);
      }
    }
  }

  $theme->footer();
}


function blog_page_day($userid = 0, $date = 0) {
  global $theme, $user;

  $header .= "<table cellspacing=\"0\" cellpadding=\"0\" width=\"100%\">\n";
  $header .= " <tr>\n";
  $header .= "  <td><b><a href=\"module.php?mod=blog&op=view&name=". urlencode($userid) ."\">". check_output($userid) ."'s ". t("blog") ."</a></b></td>\n";
  $header .= "  <td align=\"right\"><b><a href=\"module.php?mod=blog&op=view&name=". urlencode($userid) ."&date=$date\">". format_date($date, custom, "d-M-Y") ."</a></b></td>\n";
  $header .= " </tr>\n";
  $header .= "</table>\n";

  $sdate = mktime(0, 0, 0, date("m", $date), date("d", $date), date("Y", $date));
  $edate = mktime(23, 59, 59, date("m", $date), date("d", $date), date("Y", $date));

  $result = db_query("SELECT b.body, n.timestamp, n.nid FROM blog b LEFT JOIN node n ON b.nid = n.nid LEFT JOIN users u ON n.author = u.id WHERE u.userid = '". check_input($userid) ."' AND n.timestamp > '$sdate' AND n.timestamp < '$edate' ORDER BY b.lid DESC LIMIT 50");

  while ($blog = db_fetch_object($result)) {
    if (!$first) $first = $blog->nid;
    $output .= "<p><a href=\"submit.php?mod=blog&type=blog&id=$blog->nid\"><img src=\"misc/blog.gif\" border=\"0\" width=\"12\" height=\"16\" alt=\"". t("Blog this item") ."\"></a> ". check_output($blog->body, 1) ."</p>\n";
  }

  if ($userid == $user->userid) {
    $output .= "<p>[ <a href=\"submit.php?mod=blog&op=edit&id=$first\">". t("edit") ."</a> ]</p>";
  }

  $theme->box($header, $output);
}

function blog_status() {
  return array(dumped, posted);
}

function blog_remove($nid) {
  global $status, $user;

  node_save(array(nid => $nid), array(status => $status[dumped]));
  $blog = node_get_object(array(type => "blog", nid => "$nid"));
  if ((user_access("administer blogs")) or ($blog->userid == $user->userid)) {
    node_del(array(type => "blog", nid => $nid, lid => $blog->lid));
  }
}

function blog_view($node) {
  global $status, $theme;

  $userid = urlencode($node->userid);

  $header .= "<table cellspacing=\"0\" cellpadding=\"0\" width=\"100%\">\n";
  $header .= " <tr>\n";
  $header .= "  <td><b><a href=\"module.php?mod=blog&op=view&name=$userid\">". $node->userid ."'s ". t("blog") ."</a></b></td>\n";
  $header .= "  <td align=\"right\"><b><a href=\"module.php?mod=blog&op=view&name=$userid&date=$node->timestamp\">". format_date($node->timestamp, custom, "d-M-Y") ."</a></b></td>\n";
  $header .= " </tr>\n";
  $header .= "</table>\n";

  $output .= "<p>". check_output($node->body, 1) ."</p>\n";
  $output .= "<p>[ ". implode(" | ", link_node($node)) ."]</p>\n";

  $theme->box($header, $output);
}

function blog_form($edit = array()) {
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  global $REQUEST_URI, $id, $mod, $type, $user, $theme;
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  if ($mod == "node" || $edit[type] == "blog") {
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  }
  else if ($type == "blog") {
    $item = node_get_object(array(type => "blog", nid => $id));
    $edit["title"] = $item->title;
    $edit["body"] = $item->body ." [<a href=\"module.php?mod=blog&name=". urlencode($item->userid) ."&date=$item->timestamp\">$item->userid</a>]";
  }
  else if ($type == "import") {
    $item = db_fetch_object(db_query("SELECT i.*, f.title as ftitle, f.link as flink FROM item i, feed f WHERE i.iid = '". check_input($id) ."' AND i.fid = f.fid"));
    $edit["title"] = $item->title;
    $edit["body"] = "<a href=\"$item->link\">$item->title</a> - ". check_output($item->description) ." [<a href=\"$item->flink\">$item->ftitle</a>]\n";
  }

  if ($edit[title]) {
    $form .= blog_view(new Blog(node_preview($edit)));
  }

  $form .= form_textfield(t("Subject"), "title", $edit["title"], 50, 64);
  $form .= form_textarea(t("Body"), "body", $edit["body"], 70, 15, t("Allowed HTML tags") .": ". htmlspecialchars(variable_get("allowed_html", "")));

  $form .= form_hidden("type", "blog");

  if ($edit["nid"] > 0) {
    $form .= form_hidden("nid", $edit["nid"]);
  }

  if ($edit && !$edit["title"]) {
    $form .= "<font color=\"red\">". t("Warning: you did not supply a subject.") ."</font><p>\n";
    $form .= form_submit(t("Preview"));
  }
  else if ($edit && !$edit["body"]) {
    $form .= "<font color=\"red\">". t("Warning: you did not supply any text.") ."</font><p>\n";
    $form .= form_submit(t("Preview"));
  }
  else {
    $form .= form_submit(t("Preview"));
    $form .= form_submit(t("Submit"));
  }

  $output .= form($REQUEST_URI, $form);

  return $output;
}

function blog_save($edit) {
  global $status, $user;

  if (!$edit["nid"]) {
    node_save($edit, array(author => $user->id, body, status => variable_get("blog_status", $status[posted]), timestamp => time(), title, type => "blog"));
  }
  else if (user_access("administer blogs")) {
    node_save($edit, array(attributes => node_attributes_save("blog", $edit), body, title, type => "blog"));
  }
}

function blog_edit_history($nid) {
  global $user;

  // DB: changed this to 15 older blog entries rather than today's entries
  //     as there was no way to edit entries older than a day.  The notion
  //     of a day can be quite annoying when bloging around midnight.  All
  //     entries are accessible now.
  //
  //  $blog = node_get_object(array(nid => $nid, type => "blog"));
  //  $sdate = mktime(0, 0, 0, date("m", $blog->timestamp), date("d", $blog->timestamp), date("Y", $blog->timestamp));
  //  $edate = mktime(23, 59, 59, date("m", $blog->timestamp), date("d", $blog->timestamp), date("Y", $blog->timestamp));
  //  $result = db_query("SELECT n.title, b.body, n.timestamp, n.nid FROM blog b LEFT JOIN node n ON b.nid = n.nid WHERE n.author = '$user->id' AND n.timestamp > '$sdate' AND n.timestamp < '$edate' ORDER BY b.lid DESC LIMIT 100");

  $result = db_query("SELECT n.nid, n.title, n.timestamp, b.body FROM blog b LEFT JOIN node n ON b.nid = n.nid WHERE n.author = '". check_input($user->id) ."' AND n.nid < '". check_input($nid) ."' ORDER BY b.lid DESC LIMIT 15");

  $output .= "<table cellpadding=\"3\" cellspacing=\"3\" border=\"0\" width=\"100%\">";
  while ($blog = db_fetch_object($result)) {
    $output .= "<tr><td><b>". check_output($blog->title) ."</b><br />". check_output($blog->body, 1) ."</td><td><a href=\"submit.php?mod=blog&op=edit&id=$blog->nid\">". t("edit") ."</a></td><td><a href=\"submit.php?mod=blog&op=delete&id=$blog->nid\">". t("delete") ."</a></td></tr>\n";
  }
  $output .= "</table>";

  return $output;
}

function blog_page() {
  global $op, $name, $date;

  if (user_access("access blogs")) {
    if ($name) {
      blog_page_user($name, $date);
    }
    else {
      blog_page_all();
    }
  }
}

function blog_user() {
  global $op, $id, $name, $date, $edit, $theme, $user;

  if (user_access("post blogs")) {
    switch ($op) {
      case "delete":
        blog_remove($id);
        blog_page_day($user->userid, time());
        break;
      case "edit":
        $theme->box(t("Submit a blog"), blog_form(node_get_array(array("nid" => $id, "type" => "blog"))));
        $theme->box(t("Older blogs"), blog_edit_history($id));
        break;
      case t("Preview"):
        $theme->box(t("Preview Blog"), blog_form($edit));
        break;
      case t("Submit"):
        blog_save($edit);
        blog_page_day($user->userid, time());
        break;
      default:
        $theme->box(t("Submit a blog"), blog_form($edit));
    }
  }
}


function blog_link($type) {
  global $user;

  if ($type == "page" && user_access("access blogs")) {
    $links[] = "<a href=\"module.php?mod=blog\">". t("latest blogs") ."</a>";
  }

  if ($type == "menu" && user_access("post blogs")) {
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    $links[] = "<a href=\"submit.php?mod=blog\">". t("edit your blog") ."</a>";
    $links[] = "<a href=\"module.php?mod=blog&op=view&name=". urlencode($user->userid) ."\">". t("view your blog") ."</a>";
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  }

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


function blog_block() {
  global $name, $date, $user, $mod;

  $result = db_query("SELECT u.userid, n.timestamp, n.title, n.nid FROM node n LEFT JOIN users u ON n.author = u.id WHERE n.type = 'blog' ORDER BY n.nid DESC LIMIT 10");
  while ($node = db_fetch_object($result)) {
    $output .= "<a href=\"module.php?mod=blog&op=view&name=". urlencode($node->userid) ."\">". check_output($node->title) ."<br />\n";
  }

  $block[0]["subject"] = "<a href=\"module.php?mod=blog\">". t("Latest blogs") ."</a>";
  $block[0]["content"] = $output;
  $block[0]["info"] = t("Latest blogs");
  $block[0]["link"] = "module.php?mod=blog";

  $date = $data ? $data : time();
  $userid = $name ? $name : $user->userid;

  if (($mod == "blog") || ($mod == "block")) {
       // Only show this block on "blog pages" and in the admin block section.
    $calendar = new BlogCalendar($userid, $date);
    $block[1]["subject"] = "<a href=\"module.php?mod=blog&name=". urlencode($userid) ."\">" . t("Browse blog") . "</a>";
    $block[1]["content"] = $calendar->display();
    $block[1]["info"] = t("Calendar to browse blogs");
  }

  return $block;
}


function blog_search($keys) {
  global $status, $user;
  $result = db_query("SELECT n.*, b.* FROM blog b LEFT JOIN node n ON n.nid = b.nid AND n.lid = b.lid WHERE (n.title LIKE '%$keys%' OR b.body LIKE '%$keys%') ORDER BY n.timestamp DESC LIMIT 20");
  while ($blog = db_fetch_object($result)) {
    $find[$i++] = array("title" => check_output($blog->title), "link" => (user_access("administer nodes") ? "admin.php?mod=node&type=blog&op=edit&id=$blog->nid" : "node.php?id=$blog->nid"), "user" => $blog->userid, "date" => $blog->timestamp);
  }
  return $find;
}


class BlogCalendar {
  var $date;
  var $userid;

  function BlogCalendar($userid, $date) {
    $this->userid = urlencode($userid);

    // Prevent future dates:
    $today = mktime(23, 59, 59, date("n", time()), date("d", time()), date("Y", time()));
    $this->date = (($date && $date <= $today) ? $date : $today);
    $this->date = mktime(23, 59, 59, date("n", $this->date), date("d", $this->date), date("Y", $this->date));
  }

  function display() {
    // Extract information from the given date:
    $month  = date("n", $this->date);
    $year = date("Y", $this->date);
    $day = date("d", $this->date);

    // Extract today's date:
    $today = mktime(23, 59, 59, date("n", time()), date("d", time()), date("Y", time()));

    // Extract the timestamp of the last day of today's month:
    $thislast = mktime(23, 59, 59, date("n", time()), date("t", time()), date("Y", time()));

    // Extract first day of the month:
    $first = date("w", mktime(0, 0, 0, $month, 1, $year));

    // Extract last day of the month:
    $last = date("t", mktime(0, 0, 0, $month, 1, $year));

    // Calculate previous and next months dates and check for shorter months (28/30 days)
    $prevmonth = mktime(23, 59, 59, $month - 1, 1, $year);
    $prev = mktime(23, 59, 59, $month - 1, min(date("t", $prevmonth), $day), $year);
    $nextmonth = mktime(23, 59, 59, $month + 1, 1, $year);
    $next = mktime(23, 59, 59, $month + 1, min(date("t", $nextmonth), $day), $year);

    // Generate calendar header:
    $output .= "\n<!-- calendar -->\n";
    $output .= "<TABLE WIDTH=\"100%\" BORDER=\"0\" CELLSPACING=\"0\" CELLPADDING=\"1\">\n";
    $output .= " <TR><TD ALIGN=\"center\" COLSPAN=\"7\"><B><A HREF=\"module.php?mod=blog&name=$this->userid&date=$prev\" STYLE=\"text-decoration: none;\">&lt;&lt;</A> &nbsp; ". date("F Y", $this->date) ." &nbsp; " . ($next <= $thislast ? "<A HREF=\"module.php?mod=blog&name=$this->userid&date=$next\" STYLE=\"text-decoration: none;\">&gt;&gt;</A>" : "&gt;&gt;") . "<B></TD></TR>\n";

    // Generate the days of the week:
    $output .= " <TR>";
    $somesunday = mktime(0, 0, 0, 3, 20, 1994);
    for ($i = 0; $i < 7; $i++) {
      $output .= "<TD ALIGN=\"center\">" . substr(ucfirst(t(date("l", $somesunday + $i * 86400))), 0, 1) . "</TD>";
    }
    $output .= "</TR>\n";

    // Initialize temporary variables:
    $nday = 1;
    $sday = $first;

    // Loop through all the days of the month:
    while ($nday <= $last) {
      // Set up blank days for first week of the month:
      if ($first) {
        $output .= " <TR><TD COLSPAN=\"$first\">&nbsp</TD>\n";
        $first = 0;
      }

      // Start every week on a new line:
      if ($sday == 0) $output .=  " <TR>\n";

      // Print one cell:
      $date = mktime(23, 59, 59, $month, $nday, $year);
      if ($date == $this->date) $output .= "  <TD ALIGN=\"center\" BGCOLOR=\"#CCCCCC\"><B>$nday</B></TD>\n";
      else if ($date > $today) $output .= "  <TD ALIGN=\"center\">$nday</TD>\n";
      else $output .= "  <TD ALIGN=\"center\"><A HREF=\"module.php?mod=blog&name=$this->userid&date=$date\" STYLE=\"text-decoration: none;\">$nday</A></TD>\n";

      // Start every week on a new line:
      if ($sday == 6) $output .=  " </TR>\n";

      // Update temporary variables:
      $sday++;
      $sday = $sday % 7;
      $nday++;
    }

    // Complete the calendar:
    if ($sday) {
      $end = 7 - $sday;
      $output .= "  <TD COLSPAN=\"$end\">&nbsp;</TD>\n </TR>\n";
    }
    $output .= "</TABLE>\n\n";

    // Return calendar:
    return $output;
  }
}

?>