<?php

//    __  __                                 __  __  _
//   / / / /_______  __________   ________  / /_/ /_(_)___  ____ ______
//  / / / / ___/ _ \/ ___/ ___/  / ___/ _ \/ __/ __/ / __ \/ __ `/ ___/
// / /_/ (__  )  __/ /  (__  )  (__  )  __/ /_/ /_/ / / / / /_/ (__  )
// \____/____/\___/_/  /____/  /____/\___/\__/\__/_/_/ /_/\__, /____/
//                                                       /____/

/**
 * Implements hook_user_insert().
 */
function materio_translator_user_insert(&$edit, &$account, $category = NULL) {
  materio_translator_user_update($edit, $account, $category);
}

/**
 * Implements hook_user_update().
 */
function materio_translator_user_update(&$edit, &$account, $category = NULL) {
  if ($category == 'account') {
    // see user_admin_perm_submit()
    if (isset($edit['materio_translator'])) {
      db_delete('materio_translator')
        ->condition('uid', $account->uid)
        ->execute();
      $edit['materio_translator'] = array_filter($edit['materio_translator']);
      if (count($edit['materio_translator'])) {
        db_insert('materio_translator')
          ->fields(array(
            'uid' => $account->uid,
            'perm' => implode(', ', array_keys($edit['materio_translator'])),
        ))->execute();
      }
      unset($edit['materio_translator']);
    }
  }
}

/**
 * Implements hook_user_delete().
 */
function materio_translator_user_delete($account) {
  db_delete('materio_translator')
    ->condition('uid', $account->uid)
    ->execute();
}

//     __  __     __
//    / / / /__  / /___  ___  __________
//   / /_/ / _ \/ / __ \/ _ \/ ___/ ___/
//  / __  /  __/ / /_/ /  __/ /  (__  )
// /_/ /_/\___/_/ .___/\___/_/  /____/
//             /_/
/**
 * Load the language permissions for a given user
 */
function materio_translator_load_permissions($uid = NULL) {
  $perms = &drupal_static(__FUNCTION__);

  // use the global user id if none is passed
  if (!isset($uid)) {
    $uid = $GLOBALS['user']->uid;
    $account = NULL;
  }else {
    $account = user_load($uid);
  }

  if (!isset($perms[$uid])) {
    $perm_string = db_query('SELECT perm FROM {materio_translator} WHERE uid = :uid', array(':uid' => $uid))->fetchField();

    if ($perm_string) {
      $perms[$uid] = drupal_map_assoc(explode(', ', $perm_string));
    }else {
      $perms[$uid] = array();
    }
  }

  // adding the default languages if permission has been granted
  if (user_access('access selected languages', $account)) {
    $perms[$uid] = array_merge($perms[$uid], drupal_map_assoc(variable_get('materio_translator_languages', array())));
  }

  return $perms[$uid];
}


//    ________      __          __
//   / ____/ /___  / /_  ____ _/ /  ____  ___  _________ ___  _____
//  / / __/ / __ \/ __ \/ __ `/ /  / __ \/ _ \/ ___/ __ `__ \/ ___/
// / /_/ / / /_/ / /_/ / /_/ / /  / /_/ /  __/ /  / / / / / (__  )
// \____/_/\____/_.___/\__,_/_/  / .___/\___/_/  /_/ /_/ /_/____/
//                              /_/
/**
 * Implements hook_permission().
 */
function materio_translator_permission() {
  return array(
    'access selected languages' => array(
      'title' => t('Access selected languages'),
      'description' => t('This permission gives this role edit/delete access to all content which are in the <a href="!url" target="_blank">selected language</a>. View/create access needs a different access level.', array('!url' => url('admin/config/regional/language/access'))),
      'restrict access' => TRUE,
    ),
    'administer user translation language access' => array(
      'title' => t('Administer user translation language access'),
      'description' => t('administer user translation language access'),
      'restrict access' => TRUE,
    ),
    'access_translations_overview' =>  array(
      'title' => t('Access translations overview')
    ),

    'access_translation_table_fields' =>  array(
      'title' => t('Access translation Fields table')
    ),
    'access_translation_table_content_type' =>  array(
      'title' => t('Access translation Content types table')
    ),
    'access_translation_table_menu' =>  array(
      'title' => t('Access translation menu table')
    ),
    'access_translation_table_taxonomy' =>  array(
      'title' => t('Access translation taxonomy table')
    ),

    'translate_strings' =>  array(
      'title' => t('Translate strings')
    ),
    'delete_strings' =>  array(
      'title' => t('Delete strings')
    ),
    'refresh_strings' =>  array(
      'title' => t('Refresh strings')
    ),

    'import_translations' =>  array(
      'title' => t('Import translations')
    ),
    'export_translations' =>  array(
      'title' => t('Import translations')
    ),
    'update_modules_translations' =>  array(
      'title' => t('Update modules translations')
    ),
  );
}

/**
 * Implements hook_form_alter().
 */
function materio_translator_form_alter(&$form, &$form_state, $form_id) {
  // dsm($form_id);

  // Add materio_translator things to user/edit /user/add
  if ($form_id == 'user_register_form' || $form_id == 'user_profile_form' ) {
    // dsm($form_id, 'form_id');
    // dsm($form, 'form');
    // dsm($form_state, 'form_state');

    $form['materio_translator'] = array(
      '#type' => 'fieldset',
      '#title' => t('Translation access'),
      '#tree' => 0,
      '#access' => user_access('administer user translation language access'),
    );
    $form['materio_translator']['materio_translator'] = array(
      '#type' => 'checkboxes',
      '#options' => array(LANGUAGE_NONE => t('Language neutral')) + locale_language_list('name'),
      '#default_value' => materio_translator_load_permissions($form['#user']->uid),
      '#description' => t('The user get edit, delete access to all content which are in this enabled languages. Create, view access needs a different access level.'),
    );
  }

  // limit fields in string translation
  if($form_id == 'i18n_string_locale_translate_edit_form'){
    // dsm($form, 'form');
    // dsm($form_state, 'form_state');
    global $user;
    $perms = materio_translator_load_permissions($user->uid);
    // dsm($perms);
    foreach ($form['translations'] as $langcode => $item) {
      // disable field if langcode not in perms
      if(!in_array($langcode, $perms) && isset($form['translations'][$langcode])){
        $form['translations'][$langcode]['#disabled'] = true;
      }
    }
  }

  // limit fields in string translation
  if($form_id == 'field_translation_table_form'
  || $form_id == "node_translation_table_nodetype_form"
  || $form_id == "menu_translation_table_menu_form"
  || $form_id == "taxonomy_translation_table_taxonomy_form"){
    // dsm($form, 'form');
    // dsm($form_state, 'form_state');
    global $user;
    $perms = materio_translator_load_permissions($user->uid);
    // dsm($perms);
    foreach ($form['filtered_form']['strings'] as $id => $row) {
      foreach ($row as $langcode => $field) {
        // disable field if langcode not in perms
        if(!in_array($langcode, $perms)){
          $form['filtered_form']['strings'][$id][$langcode]['#disabled'] = true;
        }
      }
    }
  }

}

/**
 * Implements hook_menu().
 */
function materio_translator_menu() {
  $items['admin/config/regional/language/access'] = array(
    'title' => 'Access',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('materio_translator_admin_settings'),
    'access arguments' => array('administer site configuration'),
    'type' => MENU_LOCAL_TASK,
    'weight' => 10,
  );
  return $items;
}

/**
 * Admin settings form.
 */
function materio_translator_admin_settings($form) {
  $form['materio_translator_languages'] = array(
    '#title' => t('Select the default access languages'),
    '#type' => 'select',
    '#multiple' => TRUE,
    '#options' => array(LANGUAGE_NONE => t('Language neutral')) + locale_language_list('name'),
    '#default_value' => variable_get('materio_translator_languages', array()),
    '#description' => t("This selection of languages will be connected with the 'access selected languages' permission which you can use to grant a role access to these languages at once.")
  );
  return system_settings_form($form);
}

//     __  ___                    ___    ____
//    /  |/  /__  ____  __  __   /   |  / / /____  _____
//   / /|_/ / _ \/ __ \/ / / /  / /| | / / __/ _ \/ ___/
//  / /  / /  __/ / / / /_/ /  / ___ |/ / /_/  __/ /
// /_/  /_/\___/_/ /_/\__,_/  /_/  |_/_/\__/\___/_/

/**
 * Implements hook_menu_alter().
 */
function materio_translator_menu_alter(&$items) {
  // due to hook_module_implementation_alter calling entity translation last, we can't change the callback here, i've done it in entity_translation.node.inc - consider calling it here?
  // $items['node/%node/translate']['page callback'] = 'materio_translator_translation_node_overview';
  //
  foreach ($items as $path => $item) {
    // if(strpos($path, 'node/%node/translate') !== false){
    if(preg_match('/^node\/%node\/translate$/', $path)){
      // dsm($path);
      // dsm($item);

      // create new page arguments
      $pargs = $item['page arguments'];
      // add page call back for entity_translation call
      // and memorize old page callback (i18n) for entity_translation call args
      $pargs[2]['page callback'] = $item['page callback'];
      $pargs[2]['file'] = $item['file'];
      $pargs[2]['module'] = $item['module'];
      $pargs[2]['page arguments'] = $item['page arguments'];
      // dsm($pargs, "pargs");

      // change page callback for our own function
      $items[$path]['page callback'] = "materio_translator_translation_node_overview";
      // add our own page raguments
      $items[$path]['page arguments'] = $pargs;
    }

    // translation edit link
    if(preg_match('/^node\/%node\/edit\/%entity_translation_language$/', $path)){
      // dsm($item, $path);

      // create new page arguments
      $access_args = $item['access arguments'];
      // dsm($access_args, 'access_args avt');
      // add page call back for entity_translation call
      // and memorize old page callback (i18n) for entity_translation call args
      $access_args[3]['access callback'] = $item['access callback'];
      $access_args[3]['file'] = 'entity_translation.node.inc';
      $access_args[3]['module'] = 'entity_translation';
      $access_args[3]['access arguments'] = $item['access arguments'];
      // dsm($access_args, "access_args");

      // change access callback for our own function
      $items[$path]['access callback'] = 'materio_translator_node_edit_access';
      // add our own page raguments
      $items[$path]['access arguments'] = $access_args;
      // dsm($access_args, 'access_args apr');

      // dsm($items[$path], $path);
    }

    // translation add link
    // if(preg_match('/^node\/%node\/edit\/add\/%entity_translation_language/', $path)){
      // dsm($item, $path);
    // }

    // translation add link
    if(preg_match('/^admin\/config\/regional\/translate$/', $path)){
  		$items[$path]['access arguments'] = array('access_translations_overview');
    }
  	if(preg_match('/^admin\/config\/regional\/translate\/table$/', $path)){
  		$items[$path]['access arguments'] = array('access_translation_table_fields');
    }
  	if(preg_match('/^admin\/config\/regional\/translate\/table\/nodetype$/', $path)){
  		$items[$path]['access arguments'] = array('access_translation_table_content_type');
    }
   	if(preg_match('/^admin\/config\/regional\/translate\/table\/menu$/', $path)){
  		$items[$path]['access arguments'] = array('access_translation_table_menu');
    }
   	if(preg_match('/^admin\/config\/regional\/translate\/table\/taxonomy$/', $path)){
  		$items[$path]['access arguments'] = array('access_translation_table_taxonomy');
    }
    if(preg_match('/^admin\/config\/regional\/translate\/translate$/', $path)){
  		$items[$path]['access arguments'] = array('translate_strings');
    }
    if(preg_match('/^admin\/config\/regional\/translate\/import$/', $path)){
  		$items[$path]['access arguments'] = array('import_translations');
    }
    if(preg_match('/^admin\/config\/regional\/translate\/i18n_string$/', $path)){
  		$items[$path]['access arguments'] = array('refresh_strings');
    }
    if(preg_match('/^admin\/config\/regional\/translate\/update$/', $path)){
  		$items[$path]['access arguments'] = array('update_modules_translations');
    }
    if(preg_match('/^admin\/config\/regional\/translate\/export$/', $path)){
  		$items[$path]['access arguments'] = array('export_translations');
    }
    if(preg_match('/^admin\/config\/regional\/translate\/delete$/', $path)){
      $items[$path]['access arguments'] += array("delete_strings");
    }

  }
}


function materio_translator_node_edit_access($entity_type, $entity, $langcode, $callback = null){
  $args = func_get_args();
  // dsm($args, '1 -- materio_translator_node_edit_access args');

  // dsm($entity_type, "entity_type");
  // dsm($entity, "entity");
  // dsm($langcode, 'langcode');
  // dsm($callback, "2 -- callback");

  if (module_exists($callback['module'])) {
    // dsm('module_exists');
    if (isset($callback['file'])) {
      $path = isset($callback['file path']) ? $callback['file path'] : drupal_get_path('module', $callback['module']);
      // dsm($path, 'path');
      require_once DRUPAL_ROOT . '/' . $path . '/' . $callback['file'];
    }
    // dsm($callback['access callback'], 'access callback');
    $callback['access arguments'][1] = $entity;
    $callback['access arguments'][2] = $langcode;
    $callback['access arguments'][5] = $entity;
    // dsm($callback['access arguments'], "callback['access arguments']");
    $callbackaccess = call_user_func_array($callback['access callback'], $callback['access arguments']);
    // dsm($callbackaccess, '3 -- callbackaccess');

    if($callbackaccess){
      global $user;
      $perms = materio_translator_load_permissions($user->uid);
      // dsm($perms, '4 -- perms');
      // remove link if langcode not in perms
      if(in_array($langcode, $perms)){
        return true;
      }
    }
    return false;
  }


  // $callbackaccess = call_user_func_array($callback['access callback'], $callback['access arguments']);

  // return $callbackaccess;

  return true;
}


//     _   __          __                                   _
//    / | / /___  ____/ /__     ____ _   _____  ______   __(_)__ _      __
//   /  |/ / __ \/ __  / _ \   / __ \ | / / _ \/ ___/ | / / / _ \ | /| / /
//  / /|  / /_/ / /_/ /  __/  / /_/ / |/ /  __/ /   | |/ / /  __/ |/ |/ /
// /_/ |_/\____/\__,_/\___/   \____/|___/\___/_/    |___/_/\___/|__/|__/

/**
 * Implements hook_module_implements_alter().
 */
function materio_translator_module_implements_alter(&$implementations, $hook) {
  switch ($hook) {
    case 'menu_alter':
      // Move our hook_menu_alter implementation to the end of the list.
      $group = $implementations['materio_translator'];
      unset($implementations['materio_translator']);
      $implementations['materio_translator'] = $group;
      break;
  }
}

/**
 * Most logic comes from translation/i18n_node module.
 *
 * We removes here only the "add translation" links for languages which are not your selected language.
 *
 * @see translation_node_overview
 * @see i18n_node_translation_overview
 *
 * @param object $node
 *
 * @return array.
 */
function materio_translator_translation_node_overview($entity_type, $entity, $callback = NULL) {
  // dsm('materio_translator_translation_node_overview');
  // dsm($entity_type, "entity_type");
  // dsm($entity, "entity");
  // dsm($callback, "callback");

  // first call entity_translation original callback
  // we retrieve the original build object of translation overview
  if ($callback) {
    $callback['page arguments'][1] = $entity;
    $build = materio_translator_overview_callback($callback);
    // dsm($build, "build");

    global $user;
    $perms = materio_translator_load_permissions($user->uid);
    // dsm($perms, 'perms');

    $i = 0;
    foreach ($build['entity_translation_overview']['#rows'] as $row) {
      // retrieve teh translation link
      $link = $row['data'][4];
      // dsm($link, "link");

      // retrieve the langcode from link
      preg_match('/xml:lang="([^"]+)"/', $link, $matches);
      $langcode = $matches[1];
      // dsm($langcode, 'langcode');

      // remove link if langcode not in perms
      if(!in_array($langcode, $perms)){
        $build['entity_translation_overview']['#rows'][$i]['data'][4] = "";
      }
      $i++;
    }
  }

  return $build;
}


/**
 * Calls the appropriate translation overview callback.
 */
function materio_translator_overview_callback($callback) {
  if (module_exists($callback['module'])) {
    if (isset($callback['file'])) {
      $path = isset($callback['file path']) ? $callback['file path'] : drupal_get_path('module', $callback['module']);
      require_once DRUPAL_ROOT . '/' . $path . '/' . $callback['file'];
    }
    return call_user_func_array($callback['page callback'], $callback['page arguments']);
  }
}

//     _   __          __        __
//    / | / /___  ____/ /__     / /___ _____  ____ ___  ______ _____ ____
//   /  |/ / __ \/ __  / _ \   / / __ `/ __ \/ __ `/ / / / __ `/ __ `/ _ \
//  / /|  / /_/ / /_/ /  __/  / / /_/ / / / / /_/ / /_/ / /_/ / /_/ /  __/
// /_/ |_/\____/\__,_/\___/  __/\__,_/_/ /_/\__, /\__,_/\__,_/\__, /\___/
//    ________  / /__  _____/ /_(_)___  ___/____/            /____/
//   / ___/ _ \/ / _ \/ ___/ __/ / __ \/ __ \
//  (__  )  __/ /  __/ /__/ /_/ / /_/ / / / /
// /____/\___/_/\___/\___/\__/_/\____/_/ /_/


/**
 * Implements hook_menu_local_tasks_alter().
 */
function materio_translator_menu_local_tasks_alter(&$data, $router_item, $root_path) {
  // dsm($data, 'data');

  global $user;
  $perms = materio_translator_load_permissions($user->uid);

  foreach ($data['tabs'] as $t => $tab) {
    foreach ($tab['output'] as $l => $link) {
      if($link['#language_tab']){
        // dsm($link, $link["#link"]["title"]);
        $langcode = $link["#link"]['localized_options']['language']->language;
        if(!in_array($langcode, $perms)){
          unset($data['tabs'][$t]['output'][$l]);
        }
        // dsm($data['tabs'][$t]['output'][$l]['#link']);
      }
    }
  }
}


/**
 * Implements hook_form_node_form_alter().
 */
function materio_translator_form_node_form_alter(&$form) {
  $form['#after_build'][] = '_materio_translator_form_node_form_alter';
}

/**
 * Unset's languages from language options if user does not have permission to
 * use.
 *
 * @param $form
 * @param $form_state
 * @return mixed
 */
function _materio_translator_form_node_form_alter($form, &$form_state) {
  if (isset($form['language']['#options']) && !user_access('bypass node access')) {
    $perms = materio_translator_load_permissions();
    foreach ($form['language']['#options'] as $key => $value) {
      if (empty($perms[$key])) {
        unset($form['language']['#options'][$key]);
      }
    }
  }

  return $form;
}


function materio_translator_node_tab_access(){
  $args = func_get_args();
  // dsm($args, '1 -- materio_translator_node_tab_access args');

  // dsm($entity_type, "entity_type");
  // dsm($entity, "entity");
  // dsm($langcode, 'langcode');
  // dsm($callback, "2 -- callback");
/*
  if (module_exists($callback['module'])) {
    // dsm('module_exists');
    if (isset($callback['file'])) {
      $path = isset($callback['file path']) ? $callback['file path'] : drupal_get_path('module', $callback['module']);
      // dsm($path, 'path');
      require_once DRUPAL_ROOT . '/' . $path . '/' . $callback['file'];
    }
    // dsm($callback['access callback'], 'access callback');
    $callback['access arguments'][1] = $entity;
    $callback['access arguments'][2] = $langcode;
    $callback['access arguments'][5] = $entity;
    // dsm($callback['access arguments'], "callback['access arguments']");
    $callbackaccess = call_user_func_array($callback['access callback'], $callback['access arguments']);
    // dsm($callbackaccess, '3 -- callbackaccess');

    if($callbackaccess){
      global $user;
      $perms = materio_translator_load_permissions($user->uid);
      // dsm($perms, '4 -- perms');
      // remove link if langcode not in perms
      if(in_array($langcode, $perms)){
        return true;
      }
    }
    return false;
  }


  // $callbackaccess = call_user_func_array($callback['access callback'], $callback['access arguments']);

  // return $callbackaccess;
*/
  return true;
}