<?php
// /international-class-code/<code>/page2
// /international-class-code/<code> for the index

require_once(dirname(__FILE__) . '/lib/db.php');
require_once(dirname(__FILE__). '/searchcode/BrowseTrademarkSearch.php');
require_once(dirname(__FILE__). '/searchcode/DetailedTrademarkSearch.php');
require_once(dirname(__FILE__). '/searchcode/DetailedTrademarkOpenSearch.php');
require_once(dirname(__FILE__) . '/searchcode/TrademarkSearchSnippetGenerator.php');
require_once(dirname(__FILE__) . '/searchcode/SearchResultPageModel.php');
require_once(dirname(__FILE__) . '/page_renderers/Rendereable.php');
require_once(dirname(__FILE__) . '/page_renderers/search/PaginationRenderer.php');
require_once(dirname(__FILE__). '/page_renderers/search/BrowsePageRenderer.php');

define('CACHE_PATH', getenv('CACHE_PATH') . 'listings');

$type = $_GET['type'];
switch($type) { 
  case 'international-class-code':
    render_international_class_code_page();
}


function render_international_class_code_page() { 
  $args = explode('/', $_GET['args']);
  $code = $args[0];
  $code = preg_replace('/[^A-Z0-9]+/', '', $code);
  $code = ltrim($code, '0');
  
  $page_number = isset($args[1]) ? $args[1] : 1 ;
  if(preg_match('/\d+$/', $page_number, $page_number_match)) {
    $page_number = $page_number_match[0];  
  }
  else {
    $page_number = 1;
  }
  
 $cache_filename = "international-class-code/code$code/page$page_number.cache";
  $cached_page = get_cached_page($cache_filename);
  if($cached_page) {
    echo $cached_page;
    return;
  }
  
  $search = new DetailedTrademarkOpenSearch(false);
  $search->set_page_number($page_number);
  $search->set_return_size(CloudSearch::DEFAULT_RETURN_SIZE);

  // Calculate the from parameter for pagination
  $from = ($page_number - 1) * CloudSearch::DEFAULT_RETURN_SIZE;

  // Build the OpenSearch query
  $query = [
    "bool" => [
      "must" => [
        [
          "script" => [
            "script" => [
              "source" => "(doc['visibility'].size() > 0 && doc['visibility'].value == 1)"
            ]
          ]
        ],
        [
          "term" => [
            "type" => "trademark_case"
          ]
        ],
        [
          "terms" => [
            "international_class_codes" => [$code, '0'.$code, '00'.$code]
          ]
        ]
      ]
    ]
  ];

  $search->set_opensearch_query($query);

  $sort = [
    [
      "filing_date" => [
        "order" => "desc"
      ]
    ]
  ];
  $search->set_opensearch_sort($sort);

  $search->set_returned_fields([
      'word_mark','serial_number','text_relevance','snippet_data','statement_goods_and_services'
  ]);

  $search_result = $search->do_search();

  $model = new SearchResultPageModel();
  $model->set_page_number($page_number);
  $model->set_results_per_page(CloudSearch::DEFAULT_RETURN_SIZE);
  $model->set_rendereable_search_results(get_rendereable_search_results($search_result));
  if ($search_result) {
    $model->set_total_search_results($search_result->get_hits_found_count());
  }
  $model->set_pagination_links_template('/international-class-code/' . $code . '/page%PAGE%');
  
  
  $renderer = new BrowsePageRenderer();
  $renderer->set_browse_field_value($code);
  $renderer->set_search($search);  
  $renderer->set_model($model);
  $renderer->set_page_type(BrowsePageRenderer::PAGE_TYPE_INTERNATIONAL_CODE);
  ob_start();
  $renderer->render();
  $page_content = ob_get_contents();
  ob_end_clean();
  store_cached_file($cache_filename, $page_content);
  echo $page_content;
}

function store_cached_file($filename, $content) { 
  $filepath = CACHE_PATH . '/' . $filename;
  $folder_path = dirname($filepath);
  if(!is_dir($folder_path))
    mkdir($folder_path, 0777, TRUE);
  file_put_contents($filepath, $content);
}


function get_cached_page($filename) { 
  $filepath = CACHE_PATH . '/' . $filename;
  if(is_file($filepath)) {
    $time_modified = filemtime($filepath);
    $seconds_elapsed = time() - $time_modified;
    if($seconds_elapsed > 86400) {
      return FALSE;
    }
    else {
      return file_get_contents($filepath);
    }
  }
  else {
    return NULL;
  }
}


function get_rendereable_search_results(SearchResult $result = null) { 
  $rendereable_search_results = array();
  $snippet_generator = new TrademarkSearchSnippetGenerator();

  if (!$result) {
    return [];
  }

  if ($result->error_exists()) {
    return [];
  }

  foreach($result->get_hits() as $hit) { 
    $rendereable_search_results[] = $snippet_generator->convert_cloudsearch_hit_to_snippet($hit);
  }
  return $rendereable_search_results;
}