#!/usr/bin/env php
<?php
/*
 +-----------------------------------------------------------------------+
 | export-contacts.sh                                                    |
 |                                                                       |
 | This script permit to export Roundcube user's address book in vCard   |
 | format.                                                               |
 |                                                                       |
 | Copyright (C) 2017, Easter-eggs                                       |
 |                                                                       |
 | Licensed under the GNU General Public License version 3 or            |
 | any later version with exceptions for skins & plugins.                |
 | See the LICENSE file for a full license statement.                    |
 |                                                                       |
 +-----------------------------------------------------------------------+
 | Author: Benjamin Renard <brenard@easter-eggs.com>                     |
 +-----------------------------------------------------------------------+
*/

define('INSTALL_PATH', realpath(__DIR__ . '/..') . '/' );
ini_set('memory_limit', -1);

require_once INSTALL_PATH.'program/include/clisetup.php';

function print_usage()
{
	print "Usage: export-contact.sh -u username -m mailhost.fqdn\n";
	print "-u / --user       User name\n";
	print "-m / --mailhost   Mailhost (optional)\n";
	print "-o / --output     Output file\n";
	print "-v / --verbose    Enable verbose mode\n";
	print "-d / --debug      Enable debug mode\n";
}

function vputs($str)
{
	$out = $GLOBALS['args']['output'] ? STDERR : STDOUT;
	fwrite($out, $str);
}

function progress_update($pos, $max)
{
	$percent = round(100 * $pos / $max);
	vputs(sprintf("%3d%% [%-51s] %d/%d\033[K\r", $percent, @str_repeat('=', $percent / 2) . '>', $pos, $max));
}

class rcmail_export extends rcmail_utils {

  function get_userid($user,$mailhost=null) {
    $db = self::db();
    $sql = "SELECT user_id, mail_host, last_login FROM " . $db->table_name('users', true) . " WHERE username=?";
    $sql_params = array($user);
    if ($mailhost) {
      $sql .= " AND mail_host=?";
      $sql_params[] = $mailhost;
    }
    //$sql .= " ORDER BY last_login DESC";
    $sql_result = $db->query($sql, $sql_params);
    log_msg("DEBUG", "Search user $user SQL query : $sql / ".print_r($sql_params, 1));
    if ($sql_result) {
      if ($db -> num_rows($sql_result)==0) {
        log_msg('FATAL',"User $user not found !");
      }
      elseif ($db -> num_rows($sql_result)>1) {
        log_msg('FATAL', "More thant one user found for username $user. You need to specify mailhost !");
        log_msg('INFO', "Users found :");
        while($sql_arr = $db->fetch_assoc($sql_result)) {
          log_msg('INFO', " - User : $user / ID : ".$sql_arr['user_id']." / Mailhost : ".$sql_arr['mail_host']." / Last login : ".$sql_arr['last_login']);
        }
      }
      else {
        $sql_arr = $db->fetch_assoc($sql_result);
        return $sql_arr['user_id'];
      }
    }
    return false;
  }

  function get_user_address_book($user, $mailhost = null) {
    $userid=$this -> get_userid($user, $mailhost);
    if ($userid !== false) {
      log_msg('DEBUG', "User $user ID : $userid");
      $contacts = new rcube_contacts(self::db(), $userid);
      return $contacts;
    }
    return false;
  }

  function export_user_contacts($user, $mailhost = null, $out = null) {
    $CONTACTS = $this->get_user_address_book($user, $mailhost);
    if ($CONTACTS === false) {
      log_msg('WARNING', "No address book found for user $user");
      return false;
    }

    $CONTACTS->set_page(1);
    $CONTACTS->set_pagesize(99999);
    $result = $CONTACTS->list_records(null, 0, true);

    if (!$out) {
      $out = STDOUT;
    }

    $count=0;
    while ($result && ($row = $result->next())) {
       if ($CONTACTS) {
           $this -> prepare_for_export($row, $CONTACTS);
       }

       // fix folding and end-of-line chars
       $row['vcard'] = preg_replace('/\r|\n\s+/', '', $row['vcard']);
       $row['vcard'] = preg_replace('/\n/', rcube_vcard::$eol, $row['vcard']);
       fwrite($out, rcube_vcard::rfc2425_fold($row['vcard']) . rcube_vcard::$eol);
       $count++;
    }
    log_msg("INFO","$count contact(s) found in address book of user $user");
  }

  function prepare_for_export(&$record, $source = null) {
    $groups   = $source && $source->groups && $source->export_groups ? $source->get_record_groups($record['ID']) : null;
    $fieldmap = $source ? $source->vcard_map : null;

    if (empty($record['vcard'])) {
        $vcard = new rcube_vcard($record['vcard'], RCUBE_CHARSET, false, $fieldmap);
        $vcard->reset();

        foreach ($record as $key => $values) {
            list($field, $section) = explode(':', $key);
            // avoid unwanted casting of DateTime objects to an array
            // (same as in rcube_contacts::convert_save_data())
            if (is_object($values) && is_a($values, 'DateTime')) {
                $values = array($values);
            }

            foreach ((array) $values as $value) {
                if (is_array($value) || is_a($value, 'DateTime') || @strlen($value)) {
                    $vcard->set($field, $value, strtoupper($section));
                }
            }
        }

        // append group names
        if ($groups) {
            $vcard->set('groups', join(',', $groups), null);
        }

        $record['vcard'] = $vcard->export();
    }
    // patch categories to alread existing vcard block
    else if ($record['vcard']) {
        $vcard = new rcube_vcard($record['vcard'], RCUBE_CHARSET, false, $fieldmap);

        // unset CATEGORIES entry, it might be not up-to-date (#1490277)
        $vcard->set('groups', null);
        $record['vcard'] = $vcard->export();

        if (!empty($groups)) {
            $vgroups = 'CATEGORIES:' . rcube_vcard::vcard_quote($groups, ',');
            $record['vcard'] = str_replace('END:VCARD', $vgroups . rcube_vcard::$eol . 'END:VCARD', $record['vcard']);
        }
    }
  }

}

// get arguments
$opts = array('u' => 'user', 'm' => 'mailhost', 'o' => 'output', 'd' => 'debug', 'v' => 'verbose', 'h' => 'help');
$args = rcube_utils::get_opt($opts);

if ($_SERVER['argv'][1] == 'help' || isset($args['help'])) {
	print_usage();
	exit;
}

$_log_levels=array(
  'FATAL' => 0,
  'WARNING' => 1,
  'INFO' => 2,
  'DEBUG' => 3
);

$log_level='WARNING';
if (isset($args['debug'])) {
  $log_level='DEBUG';
}
elseif (isset($args['verbose'])) {
  $log_level="INFO";
}
$_log_level=$_log_levels[$log_level];

function log_msg($level, $msg) {
  global $_log_level, $_log_levels;
  if (!isset($_log_levels[$level]))
    $level='DEBUG';
  $_level=$_log_levels[$level];
  if ($_level <= $_log_level) {
    echo "[$level] $msg\n";
  }
}

// prompt for username if not set
if (empty($args['user'])) {
	vputs("User: ");
	$args['user'] = trim(fgets(STDIN));
}

$out=null;
if (!empty($args['output'])) {
  $out=fopen($args['output'], 'w');
  if ($out===false) {
    print "Fail to open output file !\n";
    exit(1);
  }
}

$export = new rcmail_export();

$export -> export_user_contacts( $args['user'], $args['mailhost'], $out);

if ($out)
  fclose($out);