<?php

class WhatDidTheySayAdmin {
  var $default_options = array(
    'languages' => array(
      array('code' => 'en', 'default' => true),
      'fr',
      'es',
      'it',
      'de'
    ),
    'only_allowed_users' => false,
    'users' => array(),
    'capabilities' => array(
      'submit_transcription' => 'administrator',
      'approve_transcription' => 'administrator',
      'change_languages' => 'administrator'
    )
  );
  
  var $capabilities = array();
  
  var $language_file;
  var $all_languages = array();
  var $notices = array();
  
  function WhatDidTheySayAdmin() {
    $this->language_file = dirname(__FILE__) . '/../data/lsr-language.txt';
  }
  
  function init($what_did_they_say) {
    $this->what_did_they_say = $what_did_they_say;
    
    $this->capabilities = array(
      'submit_transcription'  => __('Submit transcriptions to a post', 'what-did-they-say'),
      'approve_transcription' => __('Approve transcriptions to a post', 'what-did-they-say'),
      'change_languages'      => __('Change the available languages', 'what-did-they-say')
    );
    
    add_action('admin_menu', array(&$this, 'admin_menu'));
    add_action('admin_notices', array(&$this, 'admin_notices'));
    
    if (current_user_can('edit_users')) {
      add_action('edit_user_profile', array(&$this, 'edit_user_profile'));
      add_action('show_user_profile', array(&$this, 'edit_user_profile'));
    }
    wp_enqueue_script('prototype');
    
    if (isset($_REQUEST['wdts'])) {
      if (isset($_REQUEST['wdts']['_nonce'])) {
        if (wp_verify_nonce($_REQUEST['wdts']['_nonce'], 'what-did-they-say')) {
    
          $this->handle_update($_REQUEST['wdts']);
        }
      } 
    }

    $this->read_language_file();
  }

  function _update_options($which, $value) {
    $options = get_option('what-did-they-say-options');
    $options[$which] = $value;
    update_option('what-did-they-say-options', $options);
  }

  function admin_notices() {
    if (!empty($this->notices)) {
      echo '<div class="updated fade">';
        echo implode("<br />", $this->notices);
      echo '</div>'; 
    }
  }

  function handle_update($info) {
    foreach (array(
      'languages', 'capabilities'
    ) as $method) {
      $result = $this->{"handle_update_${method}"}($info);
      if (!empty($result)) { $this->notices[] = $result; }
    }
  }

  function handle_update_languages($language_info) {
    $options = get_option('what-did-they-say-options');
    $updated = false;
    switch ($language_info['action']) {
      case "delete":
        $updated = sprintf(__('%s deleted.', 'what-did-they-say'), $options['languages'][$language_info['code']]['name']);
        unset($options['languages'][$language_info['code']]);
        break;
      case "add":
        $this->read_language_file();
        if (isset($this->all_languages[$language_info['code']])) {
          $options['languages'][$language_info['code']] = array('name' => $this->all_languages[$language_info['code']]);
          $updated = sprintf(__('%s added.', 'what-did-they-say'), $this->all_languages[$language_info['code']]);
        }
        break;
      case "default":
        if (isset($options['languages'][$language_info['code']])) {
          foreach ($options['languages'] as $code => $info) {
            if ($code == $language_info['code']) {
              $options['languages'][$code]['default'] = true;
              $updated = sprintf(__('%s set as default.', 'what-did-they-say'), $info['name']);
            } else {
              unset($options['languages'][$code]['default']);
            }
          }
        }
        break;
      case "rename":
        if (isset($options['languages'][$language_info['code']])) {
          if (!empty($language_info['name'])) {
            $updated = sprintf(__('%1$s renamed to %2$s.', 'what-did-they-say'), $options['languages'][$language_info['code']]['name'], $language_info['name']);
            $options['languages'][$language_info['code']]['name'] = $language_info['name'];
          }
        }
        break;
    }
    ksort($options['languages']);
    update_option('what-did-they-say-options', $options);
    return $updated;
  }
  
  function handle_update_capabilities($capabilities_info) {
    $options = get_option('what-did-they-say-options');
    $updated = false;
    switch ($capabilities_info['action']) {
      case "capabilities":
        if (isset($capabilities_info['capabilities'])) {
          foreach (array_keys($this->default_options['capabilities']) as $capability) {
            if (isset($capabilities_info['capabilities'][$capability])) {
              $options['capabilities'][$capability] = $capabilities_info['capabilities'][$capability];
            }
          }
          $updated = __('User capabilities updated', 'what-did-they-say');
        }
        break;
    }
    update_option('what-did-they-say-options', $options);
    return $updated;
  }

  function handle_update_options($requested_options) {
    $updated_options = array(
      'only_allowed_users' => false
    );

    foreach ($requested_options as $option => $value) {
      switch ($option) {
        case 'only_allowed_users':
          $updated_options['only_allowed_users'] = true;
          break;
      }
    }

    $options = array_merge(get_option('what-did-they-say-options'), $updated_options);
    update_option('what-did-they-say-options', $options);
  }

  function read_language_file() {
    if (file_exists($this->language_file)) {
      foreach (file($this->language_file, FILE_IGNORE_NEW_LINES) as $language) {
        list($code, $date_added, $name, $additional) = explode("\t", $language);
        $this->all_languages[$code] = $name;
      } 
    }
    return $this->all_languages;
  }

  function install() {
    $this->read_language_file();
    $options = get_option('what-did-they-say-options');
    if (empty($options)) {
      $this->default_options['languages'] = $this->build_default_languages();
      update_option('what-did-they-say-options', $this->default_options);
    } 
  }

  function build_default_languages() {
    $full_default_language_info = array();
    foreach ($this->default_options['languages'] as $info) {
      $code = null;
      if (is_string($info)) {
        $code = $info;
        $default = false;
      }
      if (is_array($info)) {
        extract($info);
      }
      if (isset($this->all_languages[$code])) {
        $full_default_language_info[$code] = array('name' => $this->all_languages[$code]);
        if (!empty($default)) {
          $full_default_language_info[$code]['default'] = true;
        }
      }
    }
    return $full_default_language_info;
  }

  function admin_menu() {
    add_submenu_page(
      'edit-comments.php',
      __('Manage Transcriptions', 'what-did-they-say'),
      __('Transcripts', 'what-did-they-say'),
      'edit_posts',
      'manage-transcriptions-wdts',
      array(&$this, 'manage_transcriptions_admin')
    );
    
    if (current_user_can('edit_posts')) {
      add_meta_box(
        'manage-transcriptions',
        __('Manage Transcriptions', 'what-did-they-say'),
        array(&$this, 'manage_transcriptions_meta_box'),
        'post',
        'normal',
        'low'
      );
    }
  }
  
  function manage_transcriptions_admin() {
    $options = get_option('what-did-they-say-options');

    $nonce = wp_create_nonce('what-did-they-say');
    
    include(dirname(__FILE__) . '/admin.inc');
  }
  
  function manage_transcriptions_meta_box() {
    global $post;
    
    var_dump($post->ID);
  }
  
  function edit_user_profile($user) {
    $options = get_option('what-did-they-say-options');

    if ($options['only_allowed_users']) {
      $nonce = wp_create_nonce('what-did-they-say');
      $active = in_array($user->ID, $options['allowed_users']); ?>
      <h3><?php _e('Transcription Roles', 'whay-did-they-say') ?></h3>
      
      <input type="hidden" name="wdts[_nonce]" value="<?php echo $nonce ?>" />
      <input type="hidden" name="wdts[action]" value="change-active" />
      <div>
        <input type="checkbox" name="wdts[active]" value="yes" <?php echo $active ? 'checked="checked"' : "" ?> /> <?php _e('Allow this user to submit and approve transcripts', 'what-did-they-say') ?>
      </div>
      <?php
    }
  }
}

?>