// Copyright 2014 Team 254. All Rights Reserved.
// Author: pat@patfairbank.com (Patrick Fairbank)
//
// Client-side methods for editing a match in the match review page.

var scoreTemplate = Handlebars.compile($("#scoreTemplate").html());
var allianceResults = {};

// Hijack the form submission to inject the data in JSON form so that it's easier for the server to parse.
$("form").submit(function() {
  updateResults("red");
  updateResults("blue");

  var redScoreJson = JSON.stringify(allianceResults["red"].score);
  var blueScoreJson = JSON.stringify(allianceResults["blue"].score);

  // Inject the JSON data into the form as hidden inputs.
  $("<input />").attr("type", "hidden").attr("name", "redScoreJson").attr("value", redScoreJson).appendTo("form");
  $("<input />").attr("type", "hidden").attr("name", "blueScoreJson").attr("value", blueScoreJson).appendTo("form");

  return true;
});

// Draws the match-editing form for one alliance based on the cached result data.
var renderResults = function(alliance) {
  var result = allianceResults[alliance];
  var scoreContent = scoreTemplate(result);
  $("#" + alliance + "Score").html(scoreContent);

  getInputElement(alliance, "AutoPoints").val(result.score.AutoPoints);
  getInputElement(alliance, "TeleopPoints").val(result.score.TeleopPoints);
  getInputElement(alliance, "EndgamePoints").val(result.score.EndgamePoints);
};

// Converts the current form values back into JSON structures and caches them.
var updateResults = function(alliance) {
  var result = allianceResults[alliance];
  var formData = {};
  $.each($("form").serializeArray(), function(k, v) {
    formData[v.name] = v.value;
  });

  result.score.AutoPoints = parseInt(formData[alliance + "AutoPoints"]);
  result.score.TeleopPoints = parseInt(formData[alliance + "TeleopPoints"]);
  result.score.EndgamePoints = parseInt(formData[alliance + "EndgamePoints"]);
};

// Returns the form input element having the given parameters.
var getInputElement = function(alliance, name, value) {
  var selector = "input[name=" + alliance + name + "]";
  if (value !== undefined) {
    selector += "[value=" + value + "]";
  }
  return $(selector);
};