<?php
   /**
    **  imap_mailbox.php
    **
    **  This impliments all functions that manipulate mailboxes
    **/

   /******************************************************************************
    **  Expunges a mailbox 
    ******************************************************************************/
   function sqimap_mailbox_expunge ($imap_stream, $mailbox) {
      sqimap_mailbox_select ($imap_stream, $mailbox);
      fputs ($imap_stream, "a001 EXPUNGE\r\n");
      $read = sqimap_read_data($imap_stream, "a001", true, $response, $message);
   }


   /******************************************************************************
    **  Checks whether or not the specified mailbox exists 
    ******************************************************************************/
   function sqimap_mailbox_exists ($imap_stream, $mailbox) {
      $boxes = sqimap_mailbox_list ($imap_stream);
      $found = false;
      for ($i = 0; $i < count ($boxes); $i++) {
         if ($boxes[$i]["unformatted"] == $mailbox)
            $found = true;
      }
      return $found;
   }


   /******************************************************************************
    **  Selects a mailbox
    ******************************************************************************/
   function sqimap_mailbox_select ($imap_stream, $mailbox) {
      fputs ($imap_stream, "a001 SELECT \"$mailbox\"\r\n");
      $read = sqimap_read_data($imap_stream, "a001", true, $response, $message);
   }

   
   /******************************************************************************
    **  Creates a folder 
    ******************************************************************************/
   function sqimap_mailbox_create ($imap_stream, $mailbox, $type) {
      if (strtolower($type) == "noselect") {
         $dm = sqimap_get_delimiter($imap_stream);
         $mailbox = $mailbox.$dm;
      }
      fputs ($imap_stream, "a001 CREATE \"$mailbox\"\r\n");
      $read_ary = sqimap_read_data($imap_stream, "a001", true, $response, $message);

      sqimap_subscribe ($imap_stream, $mailbox);
   }


   /******************************************************************************
    **  Subscribes to an existing folder 
    ******************************************************************************/
   function sqimap_subscribe ($imap_stream, $mailbox) {
      fputs ($imap_stream, "a001 SUBSCRIBE \"$mailbox\"\r\n");
      $read_ary = sqimap_read_data($imap_stream, "a001", true, $response, $message);
   }


   /******************************************************************************
    **  Unsubscribes to an existing folder 
    ******************************************************************************/
   function sqimap_unsubscribe ($imap_stream, $mailbox) {
      fputs ($imap_stream, "a001 UNSUBSCRIBE \"$mailbox\"\r\n");
      $read_ary = sqimap_read_data($imap_stream, "a001", true, $response, $message);
   }


   /******************************************************************************
    **  This function simply deletes the given folder
    ******************************************************************************/
   function sqimap_mailbox_delete ($imap_stream, $mailbox) {
      fputs ($imap_stream, "a001 DELETE \"$mailbox\"\r\n");
      $read_ary = sqimap_read_data($imap_stream, "a001", true, $response, $message);
      sqimap_unsubscribe ($imap_stream, $mailbox);
   }


   /******************************************************************************
    **  Formats a mailbox into 4 parts for the $boxes array
    ******************************************************************************/
   function sqimap_mailbox_parse ($line, $dm) {
		global $folder_prefix;
      for ($g=0; $g < count($line); $g++) {
         $boxes[$g]["raw"] = $line[$g];
            
         $mailbox = find_mailbox_name($line[$g]);
         $dm_count = countCharInString($mailbox, $dm);
         if (substr($mailbox, -1) == $dm)
            $dm_count--;
            
         for ($j = 0; $j < $dm_count - (countCharInString($folder_prefix, $dm)); $j++)
            $boxes[$g]["formatted"] = $boxes[$g]["formatted"] . "  ";
         $boxes[$g]["formatted"] .= readShortMailboxName($mailbox, $dm);
            
         $boxes[$g]["unformatted-dm"] = $mailbox;
         if (substr($mailbox, -1) == $dm)
            $mailbox = substr($mailbox, 0, strlen($mailbox) - 1);
         $boxes[$g]["unformatted"] = $mailbox;
         $boxes[$g]["id"] = $g;

         $flags = substr($line[$g], strpos($line[$g], "(")+1);
         $flags = substr($flags, 0, strpos($flags, ")"));
         $flags = str_replace("\\", "", $flags);
         $flags = trim(strtolower($flags));
         if ($flags) {
            $boxes[$g]["flags"] = explode(" ", $flags);
         }
			for ($i=0; $i < count($boxes[$g]["flags"]); $i++) {
				if ($boxes[$g]["flags"][$i] == "noselect") {
					$boxes[$g]["unformatted-dm"] = $boxes[$g]["unformatted-dm"].$dm;
					echo $boxes[$g]["unformatted-dm"]." - debug<br>";
				}
			}
      }
      return $boxes;
   }
   
   /******************************************************************************
    **  Returns sorted mailbox lists in several different ways.
    **  The array returned looks like this:
    ******************************************************************************/
   function sqimap_mailbox_list ($imap_stream) {
      global $load_prefs_php, $prefs_php, $config_php, $data_dir, $username, $list_special_folders_first;
		global $special_folders;

      $inbox_in_list = false;
      $inbox_subscribed = false;

      if (!isset($load_prefs_php)) include "../src/load_prefs.php";
      else global $folder_prefix;
      if (!function_exists ("ary_sort")) include "../functions/array.php";

      $dm = sqimap_get_delimiter ($imap_stream);

      /** LIST array **/
      fputs ($imap_stream, "a001 LIST \"\" \"$folder_prefix*\"\r\n");
      $list_ary = sqimap_read_data ($imap_stream, "a001", true, $response, $message);

      for ($i=0;$i < count($list_ary); $i++) {
         $sorted_list_ary[$i]["name"] = find_mailbox_name($list_ary[$i]);
         $sorted_list_ary[$i]["raw"]  = $list_ary[$i];
         if ($sorted_list_ary[$i]["name"] == "INBOX")
            $inbox_in_list = true;
      }
      if (isset($sorted_list_ary)) {
         $list_sorted = array_cleave ($sorted_list_ary, "name");
         asort($list_sorted);
      }   


      /** LSUB array **/
      $inbox_subscribed = false;
      fputs ($imap_stream, "a001 LSUB \"\" \"*\"\r\n");
      $lsub_ary = sqimap_read_data ($imap_stream, "a001", true, $response, $message);
      for ($i=0;$i < count($lsub_ary); $i++) {
         $sorted_lsub_ary[$i] = find_mailbox_name($lsub_ary[$i]);
         if (substr($sorted_lsub_ary[$i], -1) == $dm)
            $sorted_lsub_ary[$i] = substr($sorted_lsub_ary[$i], 0, strlen($sorted_lsub_ary[$i])-1);
         if ($sorted_lsub_ary[$i] == "INBOX")
            $inbox_subscribed = true;
      }
      if (isset($sorted_lsub_ary)) {
         sort($sorted_lsub_ary);
      }   

      
      /** Just in case they're not subscribed to their inbox, we'll get it for them anyway **/
      if ($inbox_subscribed == false || $inbox_in_list == false) {
         fputs ($imap_stream, "a001 LIST \"\" \"INBOX\"\r\n");
         $inbox_ary = sqimap_read_data ($imap_stream, "a001", true, $response, $message);
         $merged[0] = $inbox_ary[0];
         $k = 1;
      } else {
         $k = 0;
      }

      $i = $j = 0;
      
      if (isset($list_sorted) && isset($sorted_lsub_ary)) {
	      reset ($list_sorted);
	      for (reset($list_sorted); $key = key($list_sorted), isset($key);) {
	         if ($sorted_lsub_ary[$i] == $list_sorted[$key]) {
	            $merged[$k] = $sorted_list_ary[$key]["raw"];
	            $k++;
	            $i++;
	            next($list_sorted);
	         } else if ($sorted_lsub_ary[$i] < $list_sorted[$key]) {
	            $i++;
	         } else {
	            next($list_sorted);
	         }
	      }
      }

		$boxes = sqimap_mailbox_parse ($merged, $dm);
		
		/** Now, lets sort for special folders **/
      for ($i = 0; $i < count($boxes); $i++) {
         if ($boxes[$i]["unformatted"] == $special_folders[0]) {
            $boxesnew[0] = $boxes[$i];
            $boxes[$i]["used"] = true;
         }
      }

      if ($list_special_folders_first == true) {
         for ($i = 0; $i < count($boxes); $i++) {
            for ($j = 1; $j < count($special_folders); $j++) {
               if (substr($boxes[$i]["unformatted"], strlen($folder_prefix), strlen($special_folders[$j])) == $special_folders[$j]) {
                  $pos = count($boxesnew);
                  $boxesnew[$pos] = $boxes[$i];
                  $boxes[$i]["used"] = true;
               }
            }
         }
      }
		
      for ($i = 0; $i < count($boxes); $i++) {
         if (($boxes[$i]["unformatted"] != $special_folders[0]) &&
             ($boxes[$i]["used"] == false))  {
            $pos = count($boxesnew);
            $boxesnew[$pos] = $boxes[$i];
            $boxes[$i]["used"] = true;
         }
      }

      return $boxesnew;
   }
   
   /******************************************************************************
    **  Returns a list of all folders, subscribed or not
    ******************************************************************************/
   function sqimap_mailbox_list_all ($imap_stream) {
      global $special_folders, $list_special_folders_first, $folder_prefix;
      
      if (!function_exists ("ary_sort"))
         include ("../functions/array.php");
      
      $dm = sqimap_get_delimiter ($imap_stream);

      fputs ($imap_stream, "a001 LIST \"$folder_prefix\" *\r\n");
      $read_ary = sqimap_read_data ($imap_stream, "a001", true, $response, $message);
      $g = 0;
      $phase = "inbox"; 
      for ($i = 0; $i < count($read_ary); $i++) {
         if (substr ($read_ary[$i], 0, 4) != "a001") {
            $boxes[$g]["raw"] = $read_ary[$i];

            $mailbox = find_mailbox_name($read_ary[$i]);
            $dm_count = countCharInString($mailbox, $dm);
            if (substr($mailbox, -1) == $dm)
               $dm_count--;
               
            for ($j = 0; $j < $dm_count; $j++)
               $boxes[$g]["formatted"] = $boxes[$g]["formatted"] . "  ";
            $boxes[$g]["formatted"] .= readShortMailboxName($mailbox, $dm);
               
            $boxes[$g]["unformatted-dm"] = $mailbox;
            if (substr($mailbox, -1) == $dm)
               $mailbox = substr($mailbox, 0, strlen($mailbox) - 1);
            $boxes[$g]["unformatted"] = $mailbox;
            $boxes[$g]["id"] = $g;

            /** Now lets get the flags for this mailbox **/
            fputs ($imap_stream, "a002 LIST \"\" \"$mailbox\"\r\n"); 
            $read_mlbx = sqimap_read_data ($imap_stream, "a002", true, $response, $message);

            $flags = substr($read_mlbx[0], strpos($read_mlbx[0], "(")+1);
            $flags = substr($flags, 0, strpos($flags, ")"));
            $flags = str_replace("\\", "", $flags);
            $flags = trim(strtolower($flags));
            if ($flags) {
               $boxes[$g]["flags"] = explode(" ", $flags);
            }
         }
         $g++;
      }
      $boxes = ary_sort ($boxes, "unformatted", 1);
      return $boxes;
   }
   
?>