// Generated by CoffeeScript 1.10.0

/* Index creation
 */

(function() {
  var filter, search, search_input, search_results, select;

  window.class_index = {};

  d3.selectAll('.annotation[data-wd-id]')[0].forEach(function(d) {
    var url;
    url = "https://query.wikidata.org/sparql?query=SELECT%20DISTINCT%20%3Fclass%20%7B%7B%20wd%3A" + d.dataset.wdId + "%20wdt%3AP31%20%3Fsclass%20.%20%3Fsclass%20wdt%3AP279*%20%3Fclass%20.%20%7D%20UNION%20%7B%20wd%3A" + d.dataset.wdId + "%20wdt%3AP279*%20%3Fclass%20.%20%7D%7D&format=json";
    return d3.json(url, function(error, data) {
      return data.results.bindings.forEach(function(c) {
        var key;
        key = c["class"].value.split('/').slice(-1)[0];
        if (!(key in class_index)) {
          class_index[key] = [];
        }
        return class_index[key].push(d.dataset.wdId);
      });
    });
  });


  /* Searching features
   */

  search_input = d3.select('#header input').on('keydown', function() {
    if (event.keyCode === 13) {
      return search();
    }
  });

  d3.select('#search_button').on('click', function() {
    return search();
  });

  search_results = d3.select('#search_results');


  /* Selects a class and highlights the corresponding instance within the text
   */

  select = function(node, id) {
    d3.select('.selected').classed('selected', false);
    d3.select(node).classed('selected', true);
    d3.selectAll(".annotation[data-wd-id]").classed('highlighted', true);
    d3.selectAll(".annotation[data-wd-id]").classed('selected', false);
    return class_index[id].forEach(function(d) {
      d3.selectAll(".annotation[data-wd-id=" + d + "]").classed('selected', true);
      return d3.selectAll(".annotation[data-wd-id=" + d + "]").classed('highlighted', false);
    });
  };


  /* Filters the data coming from Wikidata using the index
   */

  filter = function(data) {
    return data = data.filter(function(d) {
      return d.id in class_index;
    });
  };


  /* Searches for a string inserted within the textbox
   */

  search = function() {
    var query_string;
    query_string = d3.select('#header input').node().value;
    if (query_string !== '') {
      return d3.json("api.php?text=" + query_string, function(error, data) {
        var count, enter_results, resource, results;
        data = filter(data);
        data.sort(function(a, b) {
          return d3.descending(class_index[a.id].length, class_index[b.id].length);
        });
        search_results.select('.no_results').remove();
        if (data.length === 0) {
          search_results.append('div').attr({
            "class": 'no_results'
          }).html("No results found for <i>" + query_string + "</i>.");
        }
        results = search_results.selectAll('.result').data(data, function(d) {
          return d.id;
        });
        enter_results = results.enter().append('div').attr({
          "class": 'result'
        }).on('click', function(d) {
          return select(this, d.id);
        });
        results.order();
        resource = enter_results.append('div').attr({
          "class": 'resource'
        });
        resource.html(function(d) {
          return "<span class='label'>" + d.label + "</span> <span>(<a target='_blank' class='link' href='" + d.concepturi + "'>" + d.id + "</a>)</span><div class='description'>" + d.description + "</div>";
        });
        count = enter_results.append('div').attr({
          "class": 'count'
        }).text(function(d) {
          return class_index[d.id].length;
        });
        count.append('title').text(function(d) {
          return class_index[d.id].length + " " + d.label + " has been found";
        });
        return results.exit().remove();
      });
    }
  };

}).call(this);