//= require jquery
//= require jquery_ujs

$(function() {
  $("table[data-activegrid=true]").each(function(index, table) {
    var self = $(table);
    var name = self.attr("data-activegrid-name");
    var page = 1;
    var pages = self.attr("data-activegrid-pages");
    var paginate = self.attr("data-activegrid-paginate");
    var order = null;
    var filterField = null, filterValue = null;

    var baseURL = function() {
      var url = "?"
      url += encodeURI("activegrid[name]") + "=" + encodeURI(name);
      url += "&" + encodeURI("activegrid[limit]") + "=" + encodeURI(paginate);
      url += "&" + encodeURI("activegrid[offset]") + "=" + encodeURI((page - 1) * paginate);
      return url;
    };

    var updateTable = function() {
      var url = "?"
      url += encodeURI("activegrid[name]") + "=" + encodeURI(name);
      url += "&" + encodeURI("activegrid[limit]") + "=" + encodeURI(paginate);
      url += "&" + encodeURI("activegrid[offset]") + "=" + encodeURI((page - 1) * paginate);

      if (order) {
        url += "&" + encodeURI("activegrid[order]") + "=" + encodeURI(order);
      }

      if (filterField) {
        url += "&" + encodeURI("activegrid[filter][field]") + "=" + encodeURI(filterField);
        url += "&" + encodeURI("activegrid[filter][value]") + "=" + encodeURI(filterValue);
      }

      $.ajax({ url: url, dataType: "script" });
    };

    // Sorting
    var resetSortDirection = function() {
      var set = $("th[data-activegrid-sort=true]", table);
      set.data("activegrid-sort-direction", null).removeClass("activegrid-sort-asc").removeClass("activegrid-sort-desc");
    };
    $("th[data-activegrid-sort=true]", table).click(function() {
      var self = $(this);
      var field = self.attr("data-activegrid-sort-field");
      var direction = self.data("activegrid-sort-direction");
      var newDirection = direction == "asc" ? "desc" : "asc";
      resetSortDirection();

      self.data("activegrid-sort-direction", newDirection).addClass("activegrid-sort-" + newDirection);
      order = field + (newDirection == "asc" ? "" : " DESC");
      updateTable();
    });

    // Filtering
    $(":input[data-activegrid-filter=true]", table).change(function() {
      var self = $(this);
      var field = self.attr("data-activegrid-filter-field");

      filterField = field;
      filterValue = self.val();
      updateTable();
    });

    // TODO: pagination (back and forward buttons, list of pages)
  });
});

function activegrid_update(element, body) {
  $("#" + element + " tbody").html(body);
};