<?php

/**
 * @file
 * Install, update and uninstall functions for the print_pdf module.
 *
 * @ingroup print
 */

/**
 * Implements hook_enable().
 */
function print_pdf_enable() {
  // Module weight.
  db_update('system')
    ->fields(array(
      'weight' => 2,
    ))
    ->condition('type', 'module')
    ->condition('name', 'print_pdf')
    ->execute();
}

/**
 * Implements hook_uninstall().
 */
function print_pdf_uninstall() {
  variable_del('print_pdf_autoconfig');
  variable_del('print_pdf_cache_enabled');
  variable_del('print_pdf_cache_lifetime');
  variable_del('print_pdf_content_disposition');
  variable_del('print_pdf_display_sys_urllist');
  variable_del('print_pdf_filename');
  variable_del('print_pdf_images_via_file');
  variable_del('print_pdf_link_text');
  variable_del('print_pdf_link_text_enabled');
  variable_del('print_pdf_page_orientation');
  variable_del('print_pdf_paper_size');
  variable_del('print_pdf_pdf_tool');

  variable_del('print_pdf_book_link');
  variable_del('print_pdf_link_class');
  variable_del('print_pdf_link_pos');
  variable_del('print_pdf_link_teaser');
  variable_del('print_pdf_link_use_alias');
  variable_del('print_pdf_show_link');
  variable_del('print_pdf_sys_link_pages');
  variable_del('print_pdf_sys_link_visibility');

  $settings = db_query("SELECT name FROM {variable} WHERE name LIKE 'print\_pdf\_display\_%'");
  foreach ($settings as $variable) {
    variable_del($variable->name);
  }
}

/**
 * Implements hook_schema().
 */
function print_pdf_schema() {
  $schema['print_pdf_node_conf'] = array(
    'description' => 'PDF version node-specific configuration settings',
    'fields' => array(
      'nid' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'description' => 'The {node}.nid of the node.',
      ),
      'link' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 1,
        'size' => 'tiny',
        'description' => 'Show link',
      ),
      'comments' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 1,
        'size' => 'tiny',
        'description' => 'Show link in individual comments',
      ),
      'url_list' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 1,
        'size' => 'tiny',
        'description' => 'Show Printer-friendly URLs list',
      ),
      'size' => array(
        'type' => 'varchar',
        'length' => 9,
        'description' => 'Paper size',
      ),
      'orientation' => array(
        'type' => 'varchar',
        'length' => 9,
        'description' => 'Page orientation',
      ),

    ),
    'primary key' => array('nid'),
  );

  $schema['print_pdf_page_counter'] = array(
    'description' => 'PDF version access counter',
    'fields' => array(
      'path' => array(
        'type' => 'varchar',
        'length' => 255,
        'not null' => TRUE,
        'description' => 'Page path',
      ),
      'totalcount' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'size' => 'big',
        'description' => 'Number of page accesses',
      ),
      'timestamp' => array(
        'type' => 'int',
        'unsigned' => TRUE,
        'not null' => TRUE,
        'default' => 0,
        'description' => 'Last access',
      ),
    ),
    'primary key' => array('path'),
  );

  return $schema;
}

/**
 * Implements hook_requirements().
 */
function print_pdf_requirements($phase) {
  $requirements = array();
  $t = get_t();
  switch ($phase) {
    // At runtime, make sure that a PDF generation tool is selected.
    case 'runtime':
      $print_pdf_pdf_tool = variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT);
      if (empty($print_pdf_pdf_tool)) {
        $requirements['print_pdf_tool'] = array(
          'title' => $t('Printer, email and PDF versions - PDF generation library'),
          'value' => $t('No PDF tool selected'),
          'description' => $t('Please configure it in the !url.', array('!url' => l($t('PDF settings page'), 'admin/config/user-interface/print/pdf'))),
          'severity' => REQUIREMENT_ERROR,
        );
      }
      else {
        // Tool is defined, get some data from it's handler module.
        $tool = explode('|', $print_pdf_pdf_tool);
        $function = $tool[0] . '_pdf_tool_info';
        $info = function_exists($function) ? $function() : array();

        // Is the file there?
        if (!is_file($tool[1]) || !is_readable($tool[1])) {
          $requirements['print_pdf_tool'] = array(
            'title' => $t('Printer, email and PDF versions - PDF generation library'),
            'value' => $t('File not found'),
            'description' => $t('The currently selected PDF generation library (%file) is no longer accessible.', array('%file' => $tool[1])),
            'severity' => REQUIREMENT_ERROR,
          );
        }
        else {
          // Get the version number.
          $function = $tool[0] . '_pdf_tool_version';
          if (function_exists($function)) {
            $version = $function($tool[1]);

            if (isset($info['min_version']) && version_compare($version, $info['min_version'], '<')) {
              $requirements['print_pdf_tool_version'] = array(
                'title' => $t('Printer, email and PDF versions - PDF generation library'),
                'value' => $t('Unsupported %lib version', array('%lib' => $info['name'])),
                'description' => $t('The currently selected version of %lib (@version) is not supported. Please update to a !url.', array(
                  '%lib' => $info['name'],
                  '@version' => $version,
                  '!url' => l($t('newer version'), $info['url']),
                )),
                'severity' => REQUIREMENT_ERROR,
              );
            }
            else {
              $requirements['print_pdf_tool_version'] = array(
                'title' => $t('Printer, email and PDF versions - PDF generation library'),
                'value' => $info['name'] . ' ' . $version,
              );
            }
          }
        }

        // If auto-config is on, check for write access to the appropriate dirs.
        if (variable_get('print_pdf_autoconfig', PRINT_PDF_AUTOCONFIG_DEFAULT)) {
          $directories = array();
          if (isset($info['public_dirs'])) {
            foreach ($info['public_dirs'] as $dir) {
              $directories[] = 'public://print_pdf/' . $tool[0] . '/' . $dir;
            }
          }
          if (isset($info['tool_dirs'])) {
            foreach ($info['tool_dirs'] as $dir) {
              $directories[] = dirname($tool[1]) . '/' . $dir;
            }
          }

          foreach ($directories as $dir) {
            if (!is_dir($dir) || !is_writable($dir)) {
              $requirements['print_pdf_tool_' . $dir] = array(
                'title' => $t('%lib directory', array('%lib' => $info['name'])),
                'value' => $t('Non-writable permissions'),
                'description' => $t('You must change the %libdir permissions to be writable, as %lib requires write-access to that directory.', array('%lib' => $info['name'], '%libdir' => $dir)),
                'severity' => REQUIREMENT_ERROR,
              );
            }
          }
        }
      }
      break;
  }
  return $requirements;
}

/**
 * Remove hardcoded numeric deltas from all blocks.
 */
function print_pdf_update_7000(&$sandbox) {
  $renamed_deltas = array(
    'print_pdf' => array(
      '0' => 'print_pdf-top',
    ),
  );

  update_fix_d7_block_deltas($sandbox, $renamed_deltas, array());

  if (variable_get('print_pdf_filename', '') == '[site-name] - [title] - [mod-yyyy]-[mod-mm]-[mod-dd]') {
    variable_set('print_pdf_filename', '[site:name] - [node:title] - [node:changed:custom:Y-m-d]');
  }
}

/**
 * Delete old variables.
 */
function print_pdf_update_7200(&$sandbox) {
  variable_del('print_pdf_settings');

  variable_del('print_pdf_node_link_pages');
  variable_del('print_pdf_node_link_visibility');
}

/**
 * Update pdf_tool variable to new module|path format.
 */
function print_pdf_update_7201(&$sandbox) {
  $tool = explode('|', variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT));

  if (count($tool) == 1) {
    // Not an array yet, update variable to new format.
    if (preg_match('!dompdf_config.inc.php$!', $tool[0])) {
      $tool[0] = 'print_pdf_dompdf|' . $tool[0];
    }
    elseif (preg_match('!tcpdf.php$!', $tool[0])) {
      $tool[0] = 'print_pdf_tcpdf|' . $tool[0];
    }
    elseif (preg_match('!wkhtmltopdf!', $tool[0])) {
      $tool[0] = 'print_pdf_wkhtmltopdf|' . $tool[0];
    }
    else {
      $tool[0] = PRINT_PDF_PDF_TOOL_DEFAULT;
    }

    variable_set('print_pdf_pdf_tool', $tool[0]);
  }
}

/**
 * Enable block and help area links.
 */
function print_pdf_update_7202(&$sandbox) {
  $link_pos = variable_get('print_pdf_link_pos', drupal_json_decode('{ "link": "link", "block": "block", "help": "help" }'));
  $link_pos['block'] = 'block';
  $link_pos['help'] = 'help';
  variable_set('print_pdf_link_pos', $link_pos);
}

/**
 * Add Size and Orientation fields for per content type Size and Orientation.
 */
function print_pdf_update_7203(&$sandbox) {
  $spec = array(
    'type' => 'varchar',
    'length' => 9,
    'description' => 'Paper size',
  );
  db_add_field('print_pdf_node_conf', 'size', $spec);
  $spec = array(
    'type' => 'varchar',
    'length' => 9,
    'description' => 'Page orientation',
  );
  db_add_field('print_pdf_node_conf', 'orientation', $spec);
}

/**
 * Enable the PDF generation sub-module being used.
 */
function print_pdf_update_7204(&$sandbox) {
  // Since update_7201 already stored the correct module in the array, use that.
  $tool = explode('|', variable_get('print_pdf_pdf_tool', PRINT_PDF_PDF_TOOL_DEFAULT));

  if (count($tool) == 2) {
    module_enable(array($tool[0]), FALSE);
  }
}

/**
 * Increase size of the path field in the print_pdf_page_counter table.
 */
function print_pdf_update_7205(&$sandbox) {
  db_drop_primary_key('print_pdf_page_counter');
  db_change_field('print_pdf_page_counter', 'path', 'path',
    array(
      'type' => 'varchar',
      'length' => 255,
      'not null' => TRUE,
      'description' => 'Page path',
    ),
    array('primary key' => array('path')));
}