<?php

/**

 * Smarty plugin

 *

 * @package    Smarty

 * @subpackage PluginsFunction

 */

/**

 * @ignore

 */

require_once(SMARTY_PLUGINS_DIR . 'shared.escape_special_chars.php');

/**

 * @ignore

 */

require_once(SMARTY_PLUGINS_DIR . 'shared.make_timestamp.php');

/**

 * Smarty {html_select_date} plugin

 * Type:     function<br>

 * Name:     html_select_date<br>

 * Purpose:  Prints the dropdowns for date selection.

 * ChangeLog:

 * <pre>

 *            - 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 support negative timestamps, force year

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

 *            - 1.3.4 fix behaviour of 0000-00-00 00:00:00 dates to match that

 *              of 0000-00-00 dates (cybot, boots)

 *            - 2.0 complete rewrite for performance,

 *              added attributes month_names, *_id

 * </pre>

 *

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

 *           (Smarty online manual)

 * @version  2.0

 * @author   Andrei Zmievski

 * @author   Monte Ohrt <monte at ohrt dot com>

 * @author   Rodney Rehm

 *

 * @param array $params parameters

 *

 * @return string

 */

function smarty_function_html_select_date($params) {

    // generate timestamps used for month names only

    static $_month_timestamps = null;

    static $_current_year = null;

    if ($_month_timestamps === null) {

        $_current_year = date('Y');

        $_month_timestamps = array();

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

            $_month_timestamps[$i] = mktime(0, 0, 0, $i, 1, 2000);

        }

    }

    /* Default values. */

    $prefix = "Date_";

    $start_year = null;

    $end_year = null;

    $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;

       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";

    $option_separator = "\n";

    $time = null;

    // $all_empty = null;

    // $day_empty = null;

    // $month_empty = null;

    // $year_empty = null;

    $extra_attrs = '';

    $all_id = null;

    $day_id = null;

    $month_id = null;

    $year_id = null;

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

        switch ($_key) {

            case 'time':

                if (!is_array($_value) && $_value !== null) {

                    $time = smarty_make_timestamp($_value);

                }

                break;

            case 'month_names':

                if (is_array($_value) && count($_value) == 12) {

                    $$_key = $_value;

                } else {

                    trigger_error("html_select_date: month_names must be an array of 12 strings", E_USER_NOTICE);

                }

                break;

            case 'prefix':

            case 'field_array':

            case 'start_year':

            case 'end_year':

            case 'day_format':

            case 'day_value_format':

            case 'month_format':

            case 'month_value_format':

            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 'option_separator':

            case 'all_empty':

            case 'month_empty':

            case 'day_empty':

            case 'year_empty':

            case 'all_id':

            case 'month_id':

            case 'day_id':

            case 'year_id':

                $$_key = (string)$_value;

                break;

            case 'display_days':

            case 'display_months':

            case 'display_years':

            case 'year_as_text':

            case 'reverse_years':

                $$_key = (bool)$_value;

                break;

            default:

                if (!is_array($_value)) {

                    $extra_attrs .= ' ' . $_key . '="' . smarty_function_escape_special_chars($_value) . '"';

                } else {

                    trigger_error("html_select_date: extra attribute '$_key' cannot be an array", E_USER_NOTICE);

                }

                break;

        }

    }

    // Note: date() is faster than strftime()

    // Note: explode(date()) is faster than date() date() date()

    if (isset($params['time']) && is_array($params['time'])) {

        if (isset($params['time'][$prefix . 'Year'])) {

            // $_REQUEST[$field_array] given

            foreach (array('Y' => 'Year', 'm' => 'Month', 'd' => 'Day') as $_elementKey => $_elementName) {

                $_variableName = '_' . strtolower($_elementName);

                $$_variableName = isset($params['time'][$prefix . $_elementName])

                    ? $params['time'][$prefix . $_elementName]

                    : date($_elementKey);

            }

        } elseif (isset($params['time'][$field_array][$prefix . 'Year'])) {

            // $_REQUEST given

            foreach (array('Y' => 'Year', 'm' => 'Month', 'd' => 'Day') as $_elementKey => $_elementName) {

                $_variableName = '_' . strtolower($_elementName);

                $$_variableName = isset($params['time'][$field_array][$prefix . $_elementName])

                    ? $params['time'][$field_array][$prefix . $_elementName]

                    : date($_elementKey);

            }

        } else {

            // no date found, use NOW

            list($_year, $_month, $_day) = $time = explode('-', date('Y-m-d'));

        }

    } elseif ($time === null) {

        if (array_key_exists('time', $params)) {

            $_year = $_month = $_day = $time = null;

        } else {

            list($_year, $_month, $_day) = $time = explode('-', date('Y-m-d'));

        }

    } else {

        list($_year, $_month, $_day) = $time = explode('-', date('Y-m-d', $time));

    }

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

    // Note preg_match('!^(\+|\-)\s*(\d+)$!', $end_year, $match) is slower than trim+substr

    foreach (array('start', 'end') as $key) {

        $key .= '_year';

        $t = $$key;

        if ($t === null) {

            $$key = (int)$_current_year;

        } elseif ($t[0] == '+') {

            $$key = (int)($_current_year + (int)trim(substr($t, 1)));

        } elseif ($t[0] == '-') {

            $$key = (int)($_current_year - (int)trim(substr($t, 1)));

        } else {

            $$key = (int)$$key;

        }

    }

    // flip for ascending or descending

    if (($start_year > $end_year && !$reverse_years) || ($start_year < $end_year && $reverse_years)) {

        $t = $end_year;

        $end_year = $start_year;

        $start_year = $t;

    }

    // generate year <select> or <input>

    if ($display_years) {

        $_extra = '';

        $_name = $field_array ? ($field_array . '[' . $prefix . 'Year]') : ($prefix . 'Year');

        if ($all_extra) {

            $_extra .= ' ' . $all_extra;

        }

        if ($year_extra) {

            $_extra .= ' ' . $year_extra;

        }

        if ($year_as_text) {

            $_html_years = '<input type="text" name="' . $_name . '" value="' . $_year . '" size="4" maxlength="4"' . $_extra . $extra_attrs . ' />';

        } else {

            $_html_years = '<select name="' . $_name . '"';

            if ($year_id !== null || $all_id !== null) {

                $_html_years .= ' id="' . smarty_function_escape_special_chars(

                        $year_id !== null ? ($year_id ? $year_id : $_name) : ($all_id ? ($all_id . $_name) : $_name)

                    ) . '"';

            }

            if ($year_size) {

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

            }

            $_html_years .= $_extra . $extra_attrs . '>' . $option_separator;

            if (isset($year_empty) || isset($all_empty)) {

                $_html_years .= '<option value="">' . (isset($year_empty) ? $year_empty : $all_empty) . '</option>' . $option_separator;

            }

            $op = $start_year > $end_year ? -1 : 1;

            for ($i = $start_year; $op > 0 ? $i <= $end_year : $i >= $end_year; $i += $op) {

                $_html_years .= '<option value="' . $i . '"'

                    . ($_year == $i ? ' selected="selected"' : '')

                    . '>' . $i . '</option>' . $option_separator;

            }

            $_html_years .= '</select>';

        }

    }

    // generate month <select> or <input>

    if ($display_months) {

        $_extra = '';

        $_name = $field_array ? ($field_array . '[' . $prefix . 'Month]') : ($prefix . 'Month');

        if ($all_extra) {

            $_extra .= ' ' . $all_extra;

        }

        if ($month_extra) {

            $_extra .= ' ' . $month_extra;

        }

        $_html_months = '<select name="' . $_name . '"';

        if ($month_id !== null || $all_id !== null) {

            $_html_months .= ' id="' . smarty_function_escape_special_chars(

                    $month_id !== null ? ($month_id ? $month_id : $_name) : ($all_id ? ($all_id . $_name) : $_name)

                ) . '"';

        }

        if ($month_size) {

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

        }

        $_html_months .= $_extra . $extra_attrs . '>' . $option_separator;

        if (isset($month_empty) || isset($all_empty)) {

            $_html_months .= '<option value="">' . (isset($month_empty) ? $month_empty : $all_empty) . '</option>' . $option_separator;

        }

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

            $_val = sprintf('%02d', $i);

            $_text = isset($month_names) ? smarty_function_escape_special_chars($month_names[$i]) : ($month_format == "%m" ? $_val : strftime($month_format, $_month_timestamps[$i]));

            $_value = $month_value_format == "%m" ? $_val : strftime($month_value_format, $_month_timestamps[$i]);

            $_html_months .= '<option value="' . $_value . '"'

                . ($_val == $_month ? ' selected="selected"' : '')

                . '>' . $_text . '</option>' . $option_separator;

        }

        $_html_months .= '</select>';

    }

    // generate day <select> or <input>

    if ($display_days) {

        $_extra = '';

        $_name = $field_array ? ($field_array . '[' . $prefix . 'Day]') : ($prefix . 'Day');

        if ($all_extra) {

            $_extra .= ' ' . $all_extra;

        }

        if ($day_extra) {

            $_extra .= ' ' . $day_extra;

        }

        $_html_days = '<select name="' . $_name . '"';

        if ($day_id !== null || $all_id !== null) {

            $_html_days .= ' id="' . smarty_function_escape_special_chars(

                    $day_id !== null ? ($day_id ? $day_id : $_name) : ($all_id ? ($all_id . $_name) : $_name)

                ) . '"';

        }

        if ($day_size) {

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

        }

        $_html_days .= $_extra . $extra_attrs . '>' . $option_separator;

        if (isset($day_empty) || isset($all_empty)) {

            $_html_days .= '<option value="">' . (isset($day_empty) ? $day_empty : $all_empty) . '</option>' . $option_separator;

        }

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

            $_val = sprintf('%02d', $i);

            $_text = $day_format == '%02d' ? $_val : sprintf($day_format, $i);

            $_value = $day_value_format == '%02d' ? $_val : sprintf($day_value_format, $i);

            $_html_days .= '<option value="' . $_value . '"'

                . ($_val == $_day ? ' selected="selected"' : '')

                . '>' . $_text . '</option>' . $option_separator;

        }

        $_html_days .= '</select>';

    }

    // order the fields for output

    $_html = '';

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

        switch ($field_order[$i]) {

            case 'Y':

            case 'y':

                if (isset($_html_years)) {

                    if ($_html) {

                        $_html .= $field_separator;

                    }

                    $_html .= $_html_years;

                }

                break;

            case 'm':

            case 'M':

                if (isset($_html_months)) {

                    if ($_html) {

                        $_html .= $field_separator;

                    }

                    $_html .= $_html_months;

                }

                break;

            case 'd':

            case 'D':

                if (isset($_html_days)) {

                    if ($_html) {

                        $_html .= $field_separator;

                    }

                    $_html .= $_html_days;

                }

                break;

        }

    }

    return $_html;

}