<?php
// $Id: charts_graphs_bluff.install,v 1.1.2.2 2010/07/07 17:27:03 rsevero Exp $

/**
 * @file
 *   Install file for Bluff submodule.
 *
 */

/**
 * Implementation of hook_requirements().
 */
function charts_graphs_bluff_requirements($phase) {
  $requirements = array();

  // Ensure translations don't break at install time.
  $t = get_t();

  if ($phase == 'runtime') {
    $path = dirname(realpath((__FILE__))) . '/bluff/';
    $installation_instructions_path = module_exists('advanced_help') ?
      'help/charts_graphs/bluff' :
      'http://drupal.org/node/681668';

    $file = 'excanvas.js';
    if (!file_exists($path . $file)) {
      $requirements['charts_graphs_bluff_' . $file] = array(
        'title' => $t('Bluff %file file', array('%file' => $file)),
        'description' => $t('Bluff needs the %file file to work properly.
          Please review Bluff !installation_instructions.',
          array(
            '%file' => $file,
            '!installation_instructions' => l(t('installation instructions'), $installation_instructions_path))
        ),
        'severity' => REQUIREMENT_ERROR,
        'value' => $t('Unavailable'),
      );
    }

    $file = 'js-class.js';
    if (!file_exists($path . $file)) {
      $requirements['charts_graphs_bluff_' . $file] = array(
        'title' => $t('Bluff %file file', array('%file' => $file)),
        'description' => $t('Bluff needs the %file file to work properly.
          Please review Bluff !installation_instructions.',
          array(
            '%file' => $file,
            '!installation_instructions' => l(t('installation instructions'), $installation_instructions_path))
        ),
        'severity' => REQUIREMENT_ERROR,
        'value' => $t('Unavailable'),
      );
    }

    $files = array('bluff-src.js', 'bluff-min.js', 'bluff.js');
    $bluff_count = 0;
    foreach ($files as $file) {
      if (file_exists($path . $file)) {
        $bluff_count++;
      }
    }
    if ($bluff_count == 0) {
      $requirements['charts_graphs_bluff_' . $file] = array(
        'title' => $t('Bluff %file file', array('%file' => $file)),
        'description' => $t('Bluff needs the %file file to work properly.
          Please review Bluff !installation_instructions.',
          array(
            '%file' => $file,
            '!installation_instructions' => l(t('installation instructions'), $installation_instructions_path))
        ),
        'severity' => REQUIREMENT_ERROR,
        'value' => $t('Unavailable'),
      );
    }
    elseif ($bluff_count > 1) {
      $requirements['charts_graphs_bluff_excess_bluff.js'] = array(
        'title' => $t('Too many Bluff files'),
        'description' => $t('Bluff needs only one of the following files to work
          properly: %files. There are %number of them. Please leave only one.
          You can review Bluff !installation_instructions.',
          array(
            '%files' => implode(', ', $files),
            '%number' => $bluff_count,
            '!installation_instructions' => l(t('installation instructions'), $installation_instructions_path))
        ),
        'severity' => REQUIREMENT_ERROR,
        'value' => $t('%number installed', array('%number' => $bluff_count)),
      );
    }

  }

  return $requirements;
}