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!7

sclass SearchResult {
  S snippetID;
  S title;
  int occurrences;
  
  sS _fieldOrder = "snippetID title occurrences";
}

cmodule FullTextSnippetSearch > DynTableWithInput2<SearchResult> {
  switchable int maxResults = 1000;
  switchable int maxTextLength = 100000;
  transient S status;
  
  JComponent mainComponent() {
    ret northAndCenterWithMargin(dm_rightAlignedLabel status(), super.mainComponent());
  }
  
  start {
    dontPersist();
    thread { warmUp(); }
  }
  
  void calc {
    setField(out := search(input, true));
  }
  
  void warmUp enter {
    benchFor5Seconds(r { hijackPrint(r { search("this is cool", false) }) });
  }
  
  L<SearchResult> search(S input, bool setStatus) {
    S query = upper(input);
    S index = dm_require("#1029008/SnippetsDoubleWordIndex");
    Cl<S> preSnippetIDs = cast dm_call(index, 'snippetsContainingTextIC_preSearch, query);
    print("Pre-search: " + (preSnippetIDs == null ? "-" : lstr(preSnippetIDs)));
    
    S mod = dm_require("#1028945/CacheAllSnippets");
    SS data = cast dm_rcall getData(mod);
    SS titles = cast dm_rcall getTitles(mod);
    new L<SearchResult> out;
    if (preSnippetIDs == null) preSnippetIDs = keys(data);
    long nanos = 0;
    if (nempty(query)) {
      nanos = nanoTime();
      fOr ping (S snippetID : preSnippetIDs) {
        S text = data.get(snippetID);
        continue if l(text) > maxTextLength;
        S title = titles.get(snippetID);
        int n = 
          countOccurrencesIC(title, query)
          + countOccurrences_optimizedForZero(text, query);
        if (n > 0) {
          new SearchResult r;
          r.snippetID = snippetID;
          r.title = title;
          r.occurrences = n;
          out.add(r);
          if (l(out) >= maxResults) break;
        }
      }
      nanos = max(nanoTime()-nanos, 0);
    }
    sortInPlaceByCalculatedFieldDesc(out, r -> r.occurrences);
    if (setStatus)
      setField(status := empty(query) ? " " : "Found " + addPlusToCount(maxResults, l(out), nSnippets(out) + " in " + formatDouble(nanoSecondsToMilliseconds(nanos), 3) + " ms"));
    ret out;
  }
}