<?php
/**
 * @file
 * Hooks and general functions
 */

/**
 * Implements hook_menu().
 */
function ocupload_menu() {
  $items['admin/config/content/ocupload'] = array(
    'title' => 'One click upload',
    'description' => 'Configure module',
    'page callback' => 'ocupload_config_page',
    'access arguments' => array('administer site configuration'),
    'file' => 'ocupload.inc',
    'type' => MENU_NORMAL_ITEM,
  );

  $items['admin/config/content/ocupload/add'] = array(
    'title' => 'Add template',
    'description' => 'Add template form',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('ocupload_form_template'),
    'access arguments' => array('administer site configuration'),
    'file' => 'ocupload.inc',
    'type' => MENU_LOCAL_ACTION,
  );

  $items['admin/config/content/ocupload/edit/%ocupload_template'] = array(
    'title' => 'Edit template',
    'description' => 'Edit template form',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('ocupload_form_template', 5),
    'access arguments' => array('administer site configuration'),
    'file' => 'ocupload.inc',
    'type' => MENU_NORMAL_ITEM,
  );

  $items['admin/config/content/ocupload/delete/%ocupload_template'] = array(
    'title' => 'Delete template',
    'description' => 'Delete template confirm form',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('ocupload_delete_confirm', 5),
    'access arguments' => array('administer site configuration'),
    'file' => 'ocupload.inc',
    'type' => MENU_NORMAL_ITEM,
  );

  $items['ocupload/upload'] = array(
    'title' => 'Upload file',
    'page callback' => 'ocupload_upload',
    'access callback' => TRUE,
    'file' => 'ocupload.inc',
    'type' => MENU_CALLBACK,
  );

  return $items;
}

/**
 * Implements hook_permission().
 */
function ocupload_permission() {
  module_load_include('inc', 'ocupload');

  $templates = ocupload_templates();
  $permissions = array();

  foreach ($templates as $template) {
    $permissions['upload files use template ' . $template->tid] = array(
      'title' => t('Upload !extensions files', array('!extensions' => $template->mask)),
      'restrict access' => TRUE,
    );
  }

  return $permissions;
}

/**
 * Implements hook_preprocess_html().
 */
function ocupload_preprocess_html(&$vars) {
  global $base_path;

  $scripts = drupal_add_js();
  $item = menu_get_item();
  $module_path = drupal_get_path('module', 'ocupload');
  $module_static_path = $module_path . '/static/';
  $ocupload_use = FALSE;

  if (module_exists('bueditor') && (isset($scripts[drupal_get_path('module', 'bueditor') . '/bueditor.js']) || $item['path'] == 'admin/config/content/bueditor/%')) {
    drupal_add_js($module_static_path . 'bueditor.js', array('weight' => 1));
    $ocupload_use = TRUE;
  }
  elseif (module_exists('ckeditor') && isset($scripts[ckeditor_path() . '/ckeditor.js'])) {
    $ocupload_use = TRUE;
  }
  elseif (module_exists('wysiwyg')) {
    foreach ($scripts['settings']['data'] as $data) {
      if (isset($data['wysiwyg']['configs']['ckeditor'])) {
        $ocupload_use = TRUE;
        break;
      }
    }
  }

  if ($ocupload_use) {
    $templates = ocupload_templates();
    $allowed_ext = array();

    foreach ($templates as $template) {
      if (user_access('upload files use template ' . $template->tid)) {
        $allowed_ext = array_merge($allowed_ext, explode(',', $template->mask));
      }
    }

    drupal_add_js('sites/all/libraries/swfupload/swfupload.js');
    drupal_add_js('sites/all/libraries/swfupload/plugins/swfupload.queue.js');

    drupal_add_js(array('ocupload' => array(
      'phpsessid'  => session_id(),
      'sizeLimit'  => file_upload_max_size(),
      'allowedExt' => '*.' . implode('; *.', $allowed_ext) . ';',
      'modulePath' => $base_path . $module_path,
    )), 'setting');

    drupal_add_css($module_static_path . 'styles.css');
  }
}

/**
 * Implements hook_form_alter().
 */
function ocupload_form_alter(&$form, &$form_state, $form_id) {
  if (variable_get('ocupload_delete_unused_files', 1) && isset($form['#submit'])) {
    array_unshift($form['#submit'], 'ocupload_change_files_status');
  }
}

/**
 * Custom form submit. Change status uploaded files to "permanent".
 */
function ocupload_change_files_status($form, &$form_state) {
  $cid = 'ocupload:' . $form_state['values']['form_id'] . ':' . $GLOBALS['user']->uid;
  if ($cache = cache_get($cid)) {
    foreach ($cache->data as $field_name => $files) {
      $field_value = _ocupload_field_value_by_html_name($form_state, $field_name);
      foreach ($files as $fid => $file_name) {
        if (strpos($field_value, $file_name) !== FALSE) {
          $file = file_load($fid);
          $file->status = FILE_STATUS_PERMANENT;
          file_save($file);
          unset($cache->data[$field_name][$fid]);
        }
      }
      if (count($cache->data[$field_name]) == 0) {
        unset($cache->data[$field_name]);
      }
    }
    cache_set($cid, $cache->data, 'cache', (count($cache->data) > 0) ? $cache->expire : CACHE_TEMPORARY);
  }
}

/**
 * Return template object by tid.
 */
function ocupload_template_load($tid) {
  return db_select('ocupload_templates', 'bc')->fields('bc')->condition('bc.tid', $tid)->execute()->fetch();
}

/**
 * Return all templates.
 */
function ocupload_templates() {
  return db_select('ocupload_templates', 'bc')->fields('bc')->execute()->fetchAllAssoc('tid');
}

/**
 * Return value by input name.
 */
function _ocupload_field_value_by_html_name($form_state, $field_name) {
  $parts = explode('[', $field_name);
  $value = &$form_state['values'];
  foreach ($parts as $part) {
    $part = rtrim($part, ']');
    $value = &$value[$part];
  }
  return $value;
}

/**
 * Implements hook_wysiwyg_plugin().
 */
function ocupload_wysiwyg_plugin($editor, $version) {
  if ($editor == 'ckeditor') {
    return array(
      'OCUpload' => array(
        'url' => 'http://drupal.org/project/ocupload',
        'path' => drupal_get_path('module', 'ocupload') . '/static',
        'load' => TRUE,
        'buttons' => array('OCUpload' => t('One Click Upload')),
      )
    );
  }
}

/**
 * Implements hook_ckeditor_plugin().
 */
function ocupload_ckeditor_plugin() {
  return array(
    'ocupload' => array(
      'name' => 'OCUpload',
      'desc' => 'One Click Upload',
      'path' => drupal_get_path('module', 'ocupload') . '/static/',
      'buttons' => array(
        'OCUpload' => array(
          'icon' => 'button.png',
          'label' => 'One Click Upload',
        ),
      ),
    ),
  );
}