/**

 * Smarty plugin

 * @package Smarty

 * @subpackage plugins

 */

/**

 * Smarty {html_select_date} plugin

 *

 * Type:     function

 * Name:     html_select_date

 * Purpose:  Prints the dropdowns for date selection.

 *

 * ChangeLog:

 *           - 1.0 initial release

 *           - 1.1 added support for +/- N syntax for begin

 *                and end year values. (Monte)

 *           - 1.2 added support for yyyy-mm-dd syntax for

 *                time value. (Jan Rosier)

 *           - 1.3 added support for choosing format for

 *                month values (Gary Loescher)

 *           - 1.3.1 added support for choosing format for

 *                day values (Marcus Bointon)

 *           - 1.3.2 suppport negative timestamps, force year

 *             dropdown to include given date unless explicitly set (Monte)

 * @link http://smarty.php.net/manual/en/language.function.html.select.date.php {html_select_date}

 *      (Smarty online manual)

 * @version 1.3.2

 * @author   Andrei Zmievski

 * @param array

 * @param Smarty

 * @return string

 */

function smarty_function_html_select_date($params, &$smarty)

{

    require_once $smarty->_get_plugin_filepath('shared','make_timestamp');

    require_once $smarty->_get_plugin_filepath('function','html_options');

    /* Default values. */

    $prefix          = "Date_";

    $start_year      = strftime("%Y");

    $end_year        = $start_year;

    $display_days    = true;

    $display_months  = true;

    $display_years   = true;

    $month_format    = "%B";

    /* Write months as numbers by default  GL */

    $month_value_format = "%m";

    $day_format      = "%02d";

    /* Write day values using this format MB */

    $day_value_format = "%d";

    $year_as_text    = false;

    /* Display years in reverse order? Ie. 2000,1999,.... */

    $reverse_years   = false;

    /* Should the select boxes be part of an array when returned from PHP?

       e.g. setting it to "birthday", would create "birthday[Day]",

       "birthday[Month]" & "birthday[Year]". Can be combined with prefix */

    $field_array     = null;

    /* <select size>'s of the different <select> tags.

       If not set, uses default dropdown. */

    $day_size        = null;

    $month_size      = null;

    $year_size       = null;

    /* Unparsed attributes common to *ALL* the <select>/<input> tags.

       An example might be in the template: all_extra ='class ="foo"'. */

    $all_extra       = null;

    /* Separate attributes for the tags. */

    $day_extra       = null;

    $month_extra     = null;

    $year_extra      = null;

    /* Order in which to display the fields.

       "D" -> day, "M" -> month, "Y" -> year. */

    $field_order     = 'MDY';

    /* String printed between the different fields. */

    $field_separator = "\n";

    $time = time();

    $all_empty       = null;

    $day_empty       = null;

    $month_empty     = null;

    $year_empty      = null;

    foreach ($params as $_key=>$_value) {

        switch ($_key) {

            case 'prefix':

            case 'time':

            case 'start_year':

            case 'end_year':

            case 'month_format':

            case 'day_format':

            case 'day_value_format':

            case 'field_array':

            case 'day_size':

            case 'month_size':

            case 'year_size':

            case 'all_extra':

            case 'day_extra':

            case 'month_extra':

            case 'year_extra':

            case 'field_order':

            case 'field_separator':

            case 'month_value_format':

            case 'month_empty':

            case 'day_empty':

            case 'year_empty':

                $$_key = (string)$_value;

                break;

            case 'all_empty':

                $$_key = (string)$_value;

                $day_empty = $month_empty = $year_empty = $all_empty;

                break;

            case 'display_days':

            case 'display_months':

            case 'display_years':

            case 'year_as_text':

            case 'reverse_years':

                $$_key = (bool)$_value;

                break;

            default:

                $smarty->trigger_error("[html_select_date] unknown parameter $_key", E_USER_WARNING);

        }

    }

    if(preg_match('!^-\d+$!',$time)) {

        // negative timestamp, use date()

        $time = date('Y-m-d',$time);

    }

    // If $time is not in format yyyy-mm-dd

    if (!preg_match('/^\d{0,4}-\d{0,2}-\d{0,2}$/', $time)) {

        // use smarty_make_timestamp to get an unix timestamp and

        // strftime to make yyyy-mm-dd

        $time = strftime('%Y-%m-%d', smarty_make_timestamp($time));

    }

    // Now split this in pieces, which later can be used to set the select

    $time = explode("-", $time);

    // make syntax "+N" or "-N" work with start_year and end_year

    if (preg_match('!^(\+|\-)\s*(\d+)$!', $end_year, $match)) {

        if ($match[1] == '+') {

            $end_year = strftime('%Y') + $match[2];

        } else {

            $end_year = strftime('%Y') - $match[2];

        }

    }

    if (preg_match('!^(\+|\-)\s*(\d+)$!', $start_year, $match)) {

        if ($match[1] == '+') {

            $start_year = strftime('%Y') + $match[2];

        } else {

            $start_year = strftime('%Y') - $match[2];

        }

    }

    if (strlen($time[0]) > 0) { 

        if ($start_year > $time[0] && !isset($params['start_year'])) {

            // force start year to include given date if not explicitly set

            $start_year = $time[0];

        }

        if($end_year < $time[0] && !isset($params['end_year'])) {

            // force end year to include given date if not explicitly set

            $end_year = $time[0];

        }

    }

    $field_order = strtoupper($field_order);

    $html_result = $month_result = $day_result = $year_result = "";

    if ($display_months) {

        $month_names = array();

        $month_values = array();

        if(isset($month_empty)) {

            $month_names[''] = $month_empty;

            $month_values[''] = '';

        }

        for ($i = 1; $i <= 12; $i++) {

            $month_names[$i] = strftime($month_format, mktime(0, 0, 0, $i, 1, 2000));

            $month_values[$i] = strftime($month_value_format, mktime(0, 0, 0, $i, 1, 2000));

        }

        $month_result .= '

        if (null !== $field_array){

            $month_result .= '"' . $field_array . '[' . $prefix . 'Month]"';

        } else {

            $month_result .= '"' . $prefix . 'Month"';

        }

        if (null !== $month_size){

            $month_result .= ' size="' . $month_size . '"';

        }

        if (null !== $month_extra){

            $month_result .= ' ' . $month_extra;

        }

        if (null !== $all_extra){

            $month_result .= ' ' . $all_extra;

        }

        $month_result .= '>'."\n";

        $month_result .= smarty_function_html_options(array('output'     => $month_names,

                                                            'values'     => $month_values,

                                                            'selected'   => $a=$time[1] ? strftime($month_value_format, mktime(0, 0, 0, (int)$time[1], 1, 2000)) : '',

                                                            'print_result' => false),

                                                      $smarty);

        $month_result .= '</select>';

    }

    if ($display_days) {

        $days = array();

        if (isset($day_empty)) {

            $days[''] = $day_empty;

            $day_values[''] = '';

        }

        for ($i = 1; $i <= 31; $i++) {

            $days[] = sprintf($day_format, $i);

            $day_values[] = sprintf($day_value_format, $i);

        }

        $day_result .= '

        if (null !== $field_array){

            $day_result .= '"' . $field_array . '[' . $prefix . 'Day]"';

        } else {

            $day_result .= '"' . $prefix . 'Day"';

        }

        if (null !== $day_size){

            $day_result .= ' size="' . $day_size . '"';

        }

        if (null !== $all_extra){

            $day_result .= ' ' . $all_extra;

        }

        if (null !== $day_extra){

            $day_result .= ' ' . $day_extra;

        }

        $day_result .= '>'."\n";

        $day_result .= smarty_function_html_options(array('output'     => $days,

                                                          'values'     => $day_values,

                                                          'selected'   => $time[2],

                                                          'print_result' => false),

                                                    $smarty);

        $day_result .= '</select>';

    }

    if ($display_years) {

        if (null !== $field_array){

            $year_name = $field_array . '[' . $prefix . 'Year]';

        } else {

            $year_name = $prefix . 'Year';

        }

        if ($year_as_text) {

            $year_result .= '

            if (null !== $all_extra){

                $year_result .= ' ' . $all_extra;

            }

            if (null !== $year_extra){

                $year_result .= ' ' . $year_extra;

            }

            $year_result .= '>';

        } else {

            $years = range((int)$start_year, (int)$end_year);

            if ($reverse_years) {

                rsort($years, SORT_NUMERIC);

            } else {

                sort($years, SORT_NUMERIC);

            }

            $yearvals = $years;

            if(isset($year_empty)) {

                array_unshift($years, $year_empty);

                array_unshift($yearvals, '');

            }

            $year_result .= '

            if (null !== $year_size){

                $year_result .= ' size="' . $year_size . '"';

            }

            if (null !== $all_extra){

                $year_result .= ' ' . $all_extra;

            }

            if (null !== $year_extra){

                $year_result .= ' ' . $year_extra;

            }

            $year_result .= '>'."\n";

            $year_result .= smarty_function_html_options(array('output' => $years,

                                                               'values' => $yearvals,

                                                               'selected'   => $time[0],

                                                               'print_result' => false),

                                                         $smarty);

            $year_result .= '</select>';

        }

    }

    // Loop thru the field_order field

    for ($i = 0; $i <= 2; $i++){

        $c = substr($field_order, $i, 1);

        switch ($c){

            case 'D':

                $html_result .= $day_result;

                break;

            case 'M':

                $html_result .= $month_result;

                break;

            case 'Y':

                $html_result .= $year_result;

                break;

        }

        // Add the field seperator

        if($i != 2) {

            $html_result .= $field_separator;

        }

    }

    return $html_result;

}

/* vim: set expandtab: */

?>