<?php
// ; $Id: imagecache_profiles.module,v 1.4.2.8 2009/10/28 07:46:24 andypost Exp $

/**
 * Implementation of hook_help().
 */
function imagecache_profiles_help($path, $arg) {
  switch($path) {
    case 'admin/help#imagecache_profiles':
      return t('Utilizes imagecache presets for user profile pictures.');
  }
}

/**
 * Override process variables for user-picture.tpl.php
 * originally built by template_preprocess_user_picture()
 * locate in core user.module.
 *
 * The $variables array contains the following arguments:
 * - $account
 *
 * @see user-picture.tpl.php
 */
function imagecache_profiles_preprocess_user_picture(&$variables) {
  $default = $variables['picture'];
  if (variable_get('user_pictures', 0)) {
    $account = $variables['account'];
    // Determine imagecache preset to use for user profile picture
    // First let's determine if we have a default imagecache preset
    if (variable_get('user_picture_imagecache_profiles_default', 0)) {
      // Define default user picture size
      $size = variable_get('user_picture_imagecache_profiles_default', 0);
    }
    // If on user profile page
    if (arg(0) == 'user' && is_numeric(arg(1)) && (arg(2) == NULL || arg(2) == 'edit')) {
      if (variable_get('user_picture_imagecache_profiles', 0)) {
        $size = variable_get('user_picture_imagecache_profiles', 0);
      }
    }
    // If viewing a comment
    if (is_object($account) && array_key_exists('cid', get_object_vars($account))) {
      if (variable_get('user_picture_imagecache_comments', 0)) {
        $size = variable_get('user_picture_imagecache_comments', 0);
      }
    }

    // If views set an imagecache preset
    if (isset($account->imagecache_preset)) {
      $size = $account->imagecache_preset;
    }

    if (!empty($account->picture) && file_exists($account->picture)) {
      $picture = $account->picture;
    }
    else if (variable_get('user_picture_default', '')) {
      $picture = variable_get('user_picture_default', '');
    }

    if (isset($picture)) {
      $alt = t("@user's picture", array('@user' => $account->name ? $account->name : variable_get('anonymous', t('Anonymous'))));
      $preset = imagecache_preset($size);
      $time = filemtime($picture);
      $picture .= !empty($time) ? '?' . $time : '';
      if (empty($preset)) {
        $variables['picture'] = theme('image', $picture, $alt, $alt, '', FALSE);
      }
      else {
        $variables['picture'] = theme('imagecache', $preset['presetname'], $picture, $alt, $alt);
        if (!empty($account->uid) && user_access('access user profiles')) {
          $attributes = array('attributes' => array('title' => t('View user profile.')), 'html' => TRUE);
          $variables['picture'] = l($variables['picture'], "user/$account->uid", $attributes);
        }
      }
    }
  }
}

/**
 * Implementation of hook_form_alter().
 */
function imagecache_profiles_form_alter(&$form, $form_state, $form_id) {
  switch($form_id) {
    case 'user_profile_form':
      $form['#validate'][] = 'imagecache_profiles_user_profile_form_validate';
      break;

    case 'user_admin_settings':
      // Load imagecache presets
      $presets = array();
      $presets[] = '';
      foreach (imagecache_presets() as $key => $preset) {
        $presets[$key] = check_plain($preset['presetname']);
      }

      $form['pictures']['settings']['user_picture_imagecache_profiles'] = array(
        '#type' => 'select',
        '#title' => t('Profile picture preset'),
        '#default_value' => variable_get('user_picture_imagecache_profiles', ''),
        '#options' => $presets,
        '#description' => t("This will set the picture size when viewing a user's profile page."),
      );

      $form['pictures']['settings']['user_picture_imagecache_comments'] = array(
        '#type' => 'select',
        '#title' => t('Comment picture preset'),
        '#default_value' => variable_get('user_picture_imagecache_comments', ''),
        '#options' => $presets,
        '#description' => t("This will set the picture size when viewing a comment post."),
      );

      $form['pictures']['settings']['user_picture_imagecache_profiles_default'] = array(
        '#type' => 'select',
        '#title' => t('Default picture preset'),
        '#default_value' => variable_get('user_picture_imagecache_profiles_default', ''),
        '#options' => $presets,
        '#description' => t('This will set the default user picture size throughout the site.'),
      );

      $form['pictures']['settings']['user_picture_imagecache_profiles_min_width'] = array(
        '#type' => 'textfield',
        '#title' => t('Picture minimum width'),
        '#default_value' => variable_get('user_picture_imagecache_profiles_min_width', ''),
        '#description' => t('Minimum width dimension for picture, in pixels. To prevent upscaling this value should be set to your maximum imagecache preset width.'),
        '#size' => 10,
      );

      $form['pictures']['settings']['user_picture_imagecache_profiles_min_height'] = array(
        '#type' => 'textfield',
        '#title' => t('Picture minimum height'),
        '#default_value' => variable_get('user_picture_imagecache_profiles_min_height', ''),
        '#description' => t('Minimum height dimension for picture, in pixels. To prevent upscaling this value should be set to your maximum imagecache preset height.'),
        '#size' => 10,
      );

      break;
  }
}

/*
 * Custom form validation callback.
 *
 * @todo: Investigage validate $op of hook_user()
 * as this is not working correctly for the user_profile_form.
 * See - http://drupal.org/node/239676
 */
function imagecache_profiles_user_profile_form_validate($form, &$form_state) {
  if (isset($form_state['values']['picture'])) {
    $image_info = image_get_info($form_state['values']['picture']);
    if ($image_info['width'] < variable_get('user_picture_imagecache_profiles_min_width', 0) || $image_info['height'] < variable_get('user_picture_imagecache_profiles_min_height', 0)) {
      form_set_error('picture_upload', t('Your picture must be at least @min_user_picture_width pixels wide and @min_user_picture_height pixels tall (your image was @width x @height pixels).', array('@min_user_picture_width' => variable_get('user_picture_imagecache_profiles_min_width', 0), '@min_user_picture_height' => variable_get('user_picture_imagecache_profiles_min_height', 0), '@width' => $image_info['width'], '@height' => $image_info['height'])));
    }
  }
}

/*
 * Implements hook_user()
 *
 * Flush imagecache picture if user is updating their
 * account picture.
 */
function imagecache_profiles_user($op, &$edit, &$account, $category = NULL) {
  if ($op == 'submit' && $category == 'account') {
    if ($edit['picture_delete']) {
      imagecache_image_flush($account->picture);
    }
    if (isset($edit['picture'])) {
      imagecache_image_flush($edit['picture']);
    }
  }
  elseif ($op == 'delete' && isset($account->picture)) {
    imagecache_image_flush($account->picture);
  }
}

function imagecache_profiles_views_api() {
  return array(
    'api' => 2,
    'path' => drupal_get_path('module', 'imagecache_profiles') .'/views',
  );
}