<?php

/**
 * setup.php -- Sent Subfolders Setup File
 *
 * Copyright (c) 1999-2002 The SquirrelMail Project Team
 * Licensed under the GNU GPL. For full terms see the file COPYING.
 *
 * This is a standard Squirrelmail-1.2 API for plugins.
 *
 * $Id$
 */

define('SMPREF_SENT_SUBFOLDERS_DISABLED',  0);
define('SMPREF_SENT_SUBFOLDERS_YEARLY',    1);
define('SMPREF_SENT_SUBFOLDERS_QUARTERLY', 2);
define('SMPREF_SENT_SUBFOLDERS_MONTHLY',   3);
define('SMOPT_GRP_SENT_SUBFOLDERS','SENT_SUBFOLDERS');

function squirrelmail_plugin_init_sent_subfolders() {
    /* Standard initialization API. */
    global $squirrelmail_plugin_hooks;

    /* The hooks to make the sent subfolders display correctly. */
    $squirrelmail_plugin_hooks
    ['check_handleAsSent_result']['sent_subfolders'] =
        'sent_subfolders_check_handleAsSent';

    /* The hooks to automatically update sent subfolders. */
    $squirrelmail_plugin_hooks
    ['left_main_before']['sent_subfolders'] =
        'sent_subfolders_update_sentfolder';

    $squirrelmail_plugin_hooks
    ['compose_send']['sent_subfolders'] =
        'sent_subfolders_update_sentfolder';

    /* The hook to load the sent subfolders prefs. */
    $squirrelmail_plugin_hooks
    ['loading_prefs']['sent_subfolders'] =
        'sent_subfolders_load_prefs';

    /* The hooks to handle sent subfolders options. */
    $squirrelmail_plugin_hooks
    ['optpage_loadhook_folder']['sent_subfolders'] =
        'sent_subfolders_optpage_loadhook_folders';
}

function sent_subfolders_check_handleAsSent() {
    global $handleAsSent_result, $sent_subfolders_base;
    global $use_sent_subfolders;
    $sent_subfolders_base = 'INBOX.Sent';
    $args = func_get_arg(0);

    /* Only check the folder string if we have been passed a mailbox. */
    if ($use_sent_subfolders && (count($args) > 1)) {
        /* Chop up the folder strings as needed. */
        $base_str = $sent_subfolders_base . $delimiter;
        $mbox_str = substr($args[1], 0, strlen($base_str));

        /* Perform the comparison. */
        $handleAsSent_result =
            ( $handleAsSent_result
              || ($base_str == $mbox_str)
              || ($sent_subfolders_base == $args[1])
            );
    }
}

function sent_subfolders_load_prefs() {
    global $use_sent_subfolders;
    global $sent_subfolders_setting, $sent_subfolders_base;

    $use_sent_subfolders = getPref
    ($data_dir, $username, 'use_sent_subfolders', SMPREF_OFF);
    
    $sent_subfolders_setting = getPref
    ($data_dir, $username, 'sent_subfolders_setting', SMPREF_SENT_SUBFOLDERS_DISABLED);

    $sent_subfolders_base = getPref
    ($data_dir, $username, 'sent_subfolders_base', SMPREF_NONE);
}

function sent_subfolders_optpage_loadhook_folders() {
    global $optpage_data, $username, $key, $imapServerAddress, $imapPort;

    /* Get some imap data we need later. */
    $imapConnection =
        sqimap_login($username, $key, $imapServerAddress, $imapPort, 0);
    $boxes = sqimap_mailbox_list($imapConnection);
    sqimap_logout($imapConnection);

    /* Load the Sent Subfolder Options into an array. */
    $optgrp = _("Sent Subfolders Options");
    $optvals = array();

    $optvals[] = array(
        'name'    => 'sent_subfolders_setting',
        'caption' => _("Use Sent Subfolders"),
        'type'    => SMOPT_TYPE_STRLIST,
        'refresh' => SMOPT_REFRESH_FOLDERLIST,
        'posvals' => array(SMPREF_SENT_SUBFOLDERS_DISABLED  => _("Disabled"),
                           SMPREF_SENT_SUBFOLDERS_MONTHLY   => _("Monthly"),
                           SMPREF_SENT_SUBFOLDERS_QUARTERLY => _("Quarterly"),
                           SMPREF_SENT_SUBFOLDERS_YEARLY    => _("Yearly")),
        'save'    => 'save_option_sent_subfolders_setting'
    );

    $sent_subfolders_base_values = array();
    foreach ($boxes as $folder) {
        if (strtolower($folder['unformatted']) != 'inbox') {
            $real_value = $folder['unformatted-dm'];
            $disp_value = str_replace(' ', '&nbsp;', $folder['formatted']);
            $sent_subfolders_base_values[$real_value] = $disp_value;
        }
    }

    $optvals[] = array(
        'name'    => 'sent_subfolders_base',
        'caption' => _("Base Sent Folder"),
        'type'    => SMOPT_TYPE_STRLIST,
        'refresh' => SMOPT_REFRESH_FOLDERLIST,
        'posvals' => $sent_subfolders_base_values
    );

    /* Add our option data to the global array. */
    $optpage_data['grps'][SMOPT_GRP_SENT_SUBFOLDERS] = $optgrp;
    $optpage_data['vals'][SMOPT_GRP_SENT_SUBFOLDERS] = $optvals;
}

function save_option_sent_subfolders_setting($option) {
    global $data_dir, $username, $use_sent_subfolders;

    /* Set use_sent_subfolders as either on or off. */
    if ($option->new_value == SMPREF_SENT_SUBFOLDERS_DISABLED) {
        setPref($data_dir, $username, 'use_sent_subfolders', SMPREF_OFF);
    } else {
        setPref($data_dir, $username, 'use_sent_subfolders', SMPREF_ON);
        setPref($data_dir, $username, 'move_to_sent', SMPREF_ON);
    }

    /* Now just save the option as normal. */
    save_option($option);
}

function sent_subfolders_update_sentfolder() {
    global $sent_folder, $delimiter, $auto_create_special, $auto_create_done;
    global $sent_subfolders_base, $sent_subfolders_setting;
    global $username, $data_dir, $key, $imapServerAddress, $imapPort;
    global $use_sent_subfolders, $move_to_sent;

    if ($use_sent_subfolders && $move_to_sent) {
        $year = date('Y');
        $month = date('m');
        $quarter = sent_subfolder_getQuarter($month);

        switch ($sent_subfolders_setting) {
            case SMPREF_SENT_SUBFOLDERS_YEARLY:
	            $sent_subfolder = $sent_subfolders_base
                                . $delimiter . $year;
                $year_folder = $sent_subfolder;
                break;
            case SMPREF_SENT_SUBFOLDERS_QUARTERLY:
                $sent_subfolder = $sent_subfolders_base
                                . $delimiter . $year
                                . $delimiter . $quarter;
                $year_folder = $sent_subfolders_base
                                . $delimiter . $year;
                break;
            case SMPREF_SENT_SUBFOLDERS_MONTHLY:
                $sent_subfolder = $sent_subfolders_base
                                . $delimiter . $year
                                . $delimiter . $month;
                $year_folder = $sent_subfolders_base
                                . $delimiter . $year;
                break;
            case SMPREF_SENT_SUBFOLDERS_DISABLED:
            default:
                $sent_subfolder = $sent_folder;
                $year_folder = $sent_folder;
        }

        /* If this folder is NOT the current sent folder, update stuff. */
        if ($sent_subfolder != $sent_folder) {
            /* First, update the sent folder. */
            setPref($data_dir, $username, 'sent_folder', $sent_subfolder);
            setPref($data_dir, $username, 'move_to_sent', SMPREF_ON);
            $sent_folder = $sent_subfolder;
            $move_to_sent = SMPREF_ON;

            /* Auto-create folders, if they do not yet exist. */
            if ($sent_folder != 'none') {
                /* Create the imap connection. */
                $ic = sqimap_login
                ($username, $key, $imapServerAddress, $imapPort, 10);
	    
                /* Auto-create the year folder, if it does not yet exist. */
                if (!sqimap_mailbox_exists($ic, $year_folder)) {
                    sqimap_mailbox_create($ic, $year_folder, '');
                } else if (!sqimap_mailbox_is_subscribed($ic, $year_folder)) {
                    sqimap_subscribe($ic, $year_folder);
                }
	    
                /* Auto-create the subfolder, if it does not yet exist. */
                if (!sqimap_mailbox_exists($ic, $sent_folder)) {
                    sqimap_mailbox_create($ic, $sent_folder, '');
                } else if (!sqimap_mailbox_is_subscribed($ic, $sent_folder)) {
                    sqimap_subscribe($ic, $sent_folder);
                }

                /* Close the imap connection. */
                sqimap_logout($ic);
            }
        }
    }
}

function sent_subfolder_getQuarter($month) {
    switch ($month) {
        case '01':
        case '02':
        case '03': $result = '1'; break;
        case '04':
        case '05':
        case '06': $result = '2'; break;
        case '07':
        case '08':
        case '09': $result = '3'; break;
        case '10':
        case '11':
        case '12': $result = '4'; break;
	default: $result = 'ERR';
    }

    /* Return the current quarter. */
    return ('Q' . $result);
}

?>