<?php

/**
 * @file
 * mcd.module
 *
 * This module provides the maintenance page with nice countdown timer.
 * So now you may set time for your maintenance work and your visitors
 * will see when time is up.
 *
 */

/**
 * Implements hook_help().
 *
 * $lang = (array) $GLOBALS['language'];
  echo "Lang prefix is: " . $lang['prefix'];
 */
function mcd_help($path, $arg) {
//   Care about lang prefix
    $lang = (array) $GLOBALS['language'];
    if ($lang['prefix']) {
        $base_url = $GLOBALS['base_url'] . '/' . $lang['prefix'];
    } else {
        $base_url = $GLOBALS['base_url'];
    }
//   Help starts here
    $output = '';
    switch ($path) {
        case "admin/help#mcd":
            $output .= '<h3>' . t('Setting up MCD') . '</h3>';
            $output .= '<p>' . t('After enabling MCD module goto !url page,
          set time for maintenance and switch site off. Choose other additional options.
          After you done your maintenance works, go back and turn your site on-line.', array(
                        '!url' => l(t('Maintenance mode'), $base_url . '/admin/config/development/maintenance'),
                    )) . '</p>';
            $output .= '<h3>' . t('Simplenews integration') . '</h3>';
            $output .= '<p>' . t('If you want enable visitors to subscribe on your
          news by email (only email), install !simplenews module.', array(
                        '!simplenews' => l('Simplenews', 'http://drupal.org/project/simplenews')
                    )) . '</p>';
            $output .= '<p>' . t('NOTE: While site is off your subscribers will able read your new by email ONLY.') . '</p>';
            $output .= '<p>' . t("After you enable Simplenews module, you need to create your website launch category or use default one. Edit:
          <ul>
          	<li><strong>Select:</strong> @method → @method_select (because this
          method don't require confirmation email pages which will be never shown while your site is off-line)</li>
            <li><strong>Check:</strong> @subsblock (that's all about it)</li>
          </ul></p><p>
          Then, go to maintenance page and select subscription form category, to
          be shown. Switch website offline.", array(
                        '@method' => t('Opt-in/out method'),
                        '@method_select' => t('Single'),
                        '@subsblock' => t('Subscription block'),
                    )) . '</p>';
            $output .= '<h4>' . t('Create a newsletter') . '</h4>';
            $output .= '<p>' . t('After switching the site online, go to "@newsltr"
          tab of your newsletter node and send the newsletter to your subscribers
          manually.', array('@newsltr' => t('Newsletter'))) . '</p>';
            $output .= '<p>' . 'to be continued / продолжение следует / à poursuivre / se continuó / fortgesetzt werden' . '</p>';
            break;
    }
    return $output;
}

/**
 * Implements of hook_init().
 */
function mcd_init() {
    if (arg(0) == 'admin' && arg(3) == 'maintenance') {
        drupal_add_css(drupal_get_path('module', 'mcd') . '/mcd.css', array('type' => 'file', 'every_page' => FALSE, 'preprocess' => FALSE));
    }
//    if (variable_get('maintenance_mode', 0) && arg(0) != 'admin') {
//        drupal_add_css(drupal_get_path('theme', 'jollyness') . '/assets/css/style-preset1.css', array('type' => 'file', 'every_page' => FALSE, 'preprocess' => FALSE));
//    }
}

/**
 * Check if module simplenews is enabled
 */
function mcd_check_simplenews() {
    return module_exists('simplenews');
}

/**
 * Implements hook_form_alter().
 */
function mcd_form_alter(&$form, &$form_state, $form_id) {
    if ($form_id == 'system_site_maintenance_mode') {
        $form['mcd'] = array(
            '#type' => 'fieldset',
            '#title' => t('Maintenance Countdown settings'),
            '#weight' => 1,
            '#collapsible' => TRUE,
            '#element_validate' => array('mcd_form_validate'),
        );
        $form['mcd']['help_info'] = array(
            '#markup' => '<p>' . t('Here you may set maintenance time. i.e. how long site will be offline. For example, if you plan switch
            site offline for 5 minutes, enter \'5\' (without apostrophes) in "Minutes" field. If you need 100 hours, just do it — feel
            free to enter \'100\' (without apostrophes) in "Hours" field.') . '</p>',
        );
        $form['mcd']['mcd_months'] = array(
            '#title' => t('Month(s)'),
            '#type' => 'textfield',
            '#size' => 3,
            '#maxlength' => 3,
            '#default_value' => variable_get('mcd_months', NULL),
            '#prefix' => '<div class="mcd">'
        );
        $form['mcd']['mcd_days'] = array(
            '#title' => t('Day(s)'),
            '#type' => 'textfield',
            '#size' => 3,
            '#maxlength' => 3,
            '#default_value' => variable_get('mcd_days', NULL)
        );
        $form['mcd']['mcd_hours'] = array(
            '#title' => t('Hours(s)'),
            '#type' => 'textfield',
            '#size' => 3,
            '#maxlength' => 3,
            '#default_value' => variable_get('mcd_hours', NULL)
        );
        $form['mcd']['mcd_minutes'] = array(
            '#title' => t('Minute(s)'),
            '#type' => 'textfield',
            '#size' => 3,
            '#maxlength' => 3,
            '#default_value' => variable_get('mcd_minutes', NULL)
        );
        $form['mcd']['mcd_seconds'] = array(
            '#title' => t('Seconds'),
            '#type' => 'textfield',
            '#size' => 3,
            '#maxlength' => 3,
            '#default_value' => variable_get('mcd_seconds', NULL),
            '#suffix' => '</div>'
        );
        $form['mcd']['mcd_time_up_message'] = array(
            '#title' => t('Message after time is up'),
            '#type' => 'textarea',
            '#default_value' => variable_get('mcd_time_up_message', t('Time is up. Please reload this page by hitting <kbd>F5</kbd> on your keyboard or click on "Reload" button below.')),
            '#description' => t('Write some message that will be shown after time is up. HTML allowed.'),
        );
        //  Reload settings
        $form['mcd']['reload_settings'] = array(
            '#type' => 'fieldset',
            '#title' => t('Maintenance page reload settings'),
            '#collapsible' => TRUE,
            '#collapsed' => TRUE
        );
        $form['mcd']['reload_settings']['mcd_reload_button'] = array(
            '#type' => 'radios',
            '#default_value' => variable_get('mcd_reload_button', 0),
            '#options' => array(
                t('Show reload button'),
                t("Don't show reload button"),
                t("Don't show reload button, but add auto-reloading maintenance page every 15 seconds after time is up")),
        );
        //  Page theme setings
        $form['mcd']['theme_settings'] = array(
            '#type' => 'fieldset',
            '#title' => t('Maintenance page customization'),
            '#collapsible' => TRUE,
            '#collapsed' => TRUE
        );
        $form['mcd']['theme_settings']['mcd_page_themes'] = array(
            '#type' => 'select',
            '#title' => t('Select page theme'),
            '#default_value' => variable_get('mcd_page_themes', 'light'),
            '#options' => array(
                'light' => t('Light'),
                'dark' => t('Dark')
            )
        );
        $form['mcd']['theme_settings']['mcd_site_logo'] = array(
            '#type' => 'checkbox',
            '#title' => t('Hide site logo'),
            '#default_value' => variable_get('mcd_site_logo', 0),
        );
        $form['mcd']['theme_settings']['mcd_site_name'] = array(
            '#type' => 'checkbox',
            '#title' => t('Hide site name with link'),
            '#default_value' => variable_get('mcd_site_name', 0),
        );
        $form['mcd']['theme_settings']['mcd_site_slogan'] = array(
            '#type' => 'checkbox',
            '#title' => t('Hide site slogan'),
            '#default_value' => variable_get('mcd_site_slogan', 0),
        );
        if (mcd_check_simplenews()) {
            $form['mcd']['emailsubs_settings'] = array(
                '#type' => 'fieldset',
                '#title' => t('Subscription form settings'),
                '#collapsible' => TRUE,
                '#collapsed' => TRUE,
            );
            $form['mcd']['emailsubs_settings']['mcd_email_subscr'] = array(
                '#type' => 'select',
                '#title' => t('Select form to be shown on maintenance page'),
                '#options' => array(t('<none>')) + simplenews_category_list(),
                '#default_value' => variable_get('mcd_email_subscr', 0),
            );
            $form['mcd']['emailsubs_settings']['mcd_email_place'] = array(
                '#description' => t('If you want some placeholder for email field, so type it here.'),
                '#type' => 'textfield',
                '#title' => t('Placeholder for email field'),
                '#default_value' => variable_get('mcd_email_place'),
            );
        }
        $form['#submit'][] = 'mcd_submit';
    }
    if ($form_id == 'simplenews_block_form_' . variable_get('mcd_email_subscr') && variable_get('mcd_email_place')) {
        $form['mail']['#attributes'] = array('placeholder' => variable_get('mcd_email_place'));
    }
}

/**
 * Validation handler for time fields. All fields must be numeric
 */
function mcd_form_validate($form, &$form_state) {
    foreach (array('mcd_months', 'mcd_days', 'mcd_hours', 'mcd_minutes', 'mcd_seconds') as $field) {
        // check if fields are numeric
        if (!empty($form_state['values'][$field])) {
            if (!is_numeric($form_state['values'][$field])) {
                form_set_error($field, t('Time must be entered as number, check field(s).'));
            }
        }
        // fill '0' in empty fields to prevent incorrect time set
        else {
            $form_state['values'][$field] = 0;
        }
    }
}

/**
 * Add system_site_maintenance_settings form submit processing.
 */
function mcd_submit($form, &$form_state) {
// If website offline
    if (variable_get('maintenance_mode', 0) == 1) {
//  get time like 1315776380
        $starttime = REQUEST_TIME;
        $offtime = array(
            variable_get('mcd_months', 0) . ' months',
            variable_get('mcd_days', 0) . ' days',
            variable_get('mcd_hours', 0) . ' hours',
            variable_get('mcd_minutes', 0) . ' minutes',
            variable_get('mcd_seconds', 0) . ' seconds'
        );
        $stoptime = strtotime(format_date($starttime, 'custom', 'c') . " +" . implode(" ", $offtime));
//  save stop-time in var, output like 1315776380
        variable_set('mcd_stoptime', $stoptime);

//  for messages
        $start = format_date($starttime, 'small');
        $stop = format_date($stoptime, 'small');
        watchdog('mcd', 'Maintenance time @start — @stop', array('@start' => $start, '@stop' => $stop), WATCHDOG_INFO);

        if ($starttime == $stoptime) {
            variable_set('mcd_maintenance', 0);
            drupal_set_message(t('The timer is not set, because the time is not given.'), 'warning');
        }
//  process
        else {
            variable_set('mcd_maintenance', 1);
            drupal_set_message(t('Maintenance time @start — @stop', array('@start' => $start, '@stop' => $stop)));
        }
    }
//  If website online
    else {
        variable_set('mcd_maintenance', 0);
        drupal_set_message(t('Site on-line.'));
        watchdog('mcd', 'Site on-line', NULL, WATCHDOG_INFO);
    }

    // Update the registry based on the latest files listed in the DB.
    registry_rebuild();
    system_rebuild_theme_data();
    drupal_theme_rebuild();

    // If cache lifetime has been set, then clear page cache
    if (variable_get('cache_lifetime', 0) > 0) {
        cache_clear_all('*', 'cache', TRUE);
        cache_clear_all('*', 'cache_page', TRUE);
    }
}

/**
 * If time is set process our maintenance page with countdown
 */
if (variable_get('mcd_maintenance', 0) == '1') {
    include_once 'mcd.countdown.inc';
}