<?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, $imap_server_type;

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

        /*
            Regarding the structure we've got three main possibilities.
            One sent holder. level 0.
            Multiple year holders with messages in it. level 1.
            Multiple year folders with holders in it. level 2.
        */
        switch ($sent_subfolders_setting) {
        case SMPREF_SENT_SUBFOLDERS_YEARLY:
            $level = 1;
            $sent_subfolder = $sent_subfolders_base
                            . $year;
            $year_folder = $sent_subfolder;
            break;
        case SMPREF_SENT_SUBFOLDERS_QUARTERLY:
            $level = 2;
            $sent_subfolder = $sent_subfolders_base
                            . $year
                            . $delimiter . $quarter;
            $year_folder = $sent_subfolders_base
                            . $year;
            break;
        case SMPREF_SENT_SUBFOLDERS_MONTHLY:
            $level = 2;
            $sent_subfolder = $sent_subfolders_base
                            . $year
                            . $delimiter . $month;
            $year_folder = $sent_subfolders_base . $year;
            break;
        case SMPREF_SENT_SUBFOLDERS_DISABLED:
        default:
            $level = 0;
            $sent_subfolder = $sent_folder;
            $year_folder = $sent_folder;
        }

        if( $sent_subfolders_setting <> SMPREF_SENT_SUBFOLDERS_DISABLED && 
            $imap_server_type <> 'uw' ) {
            $year_folder .= $delimiter;            
        }

        /* 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, $year_folder, ($level==1)?'':'noselect');
                } 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, $sent_subfolder)) {
                    sqimap_subscribe($ic, $sent_subfolder);
                }

                /* 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);
}

?>