// Função para ler parâmetros informados pelo iTarefa via URL
// Apesar de não ser obrigatório, será muito útil para capturar os parâmetros
function getParameterByName (name, defaultReturn = null) {
  var match = RegExp('[?&]' + name + '=([^&]*)').exec(window.location.search);
  return match ? decodeURIComponent(match[1].replace(/\+/g, ' ')) : defaultReturn;
}

// Criando um object com os parâmetros informados pelo iTarefa
// Observe que para cada parâmetro, é realizada a chamada do método getParameterByName, implementado acima
var iLMparameters = {
  iLM_PARAM_ServerToGetAnswerURL: getParameterByName("iLM_PARAM_ServerToGetAnswerURL"),
  iLM_PARAM_SendAnswer: getParameterByName("iLM_PARAM_SendAnswer"),
  iLM_PARAM_AssignmentURL: getParameterByName("iLM_PARAM_AssignmentURL"),
  iLM_PARAM_Assignment: getParameterByName("iLM_PARAM_Assignment"),
  iLM_PARAM_TeacherAutoEval: getParameterByName("iLM_PARAM_TeacherAutoEval"),
  lang: getParameterByName("lang", "pt")
};

// Set the lang parameter to the localStorage for easy access
// and no dependency to the global scope, avoind future 'strict mode' problems
//localStorage.setItem('ivprog.lang', iLMparameters.lang);

// Função chamada pelo iTarefa quando o professor finaliza a criação da atividade
// ou quando o aluno finaliza a resolução do exercício
// O retorno é um JSON com os dados do exercício ou da resolução
// Esse retorno será armazenado no banco de dados do Moodle, pelo iTarefa
function getAnswer () {
  // Se o parâmetro "iLM_PARAM_SendAnswer" for false,
  // então trata-se de resolução de atividade
  if (iLMparameters.iLM_PARAM_SendAnswer == 'false') {
    // Montar o retorno com a resposta do aluno
    var contentToSend = previousContent.split("\n::algorithm::")[0];
    contentToSend += '\n::algorithm::\n';
    contentToSend += JSON.stringify(window.program_obj, function(key, value) {
      if (key == 'dom_object') {
          return;
      }
      return value; 
    });

    contentToSend += '\n::logs::';
    contentToSend += getTrackingLogs();

    return contentToSend;

  } else {
    // Montar o retorno com a criação da atividade do professor
    var ret = ' { ' + prepareTestCases()
        + ',\n"settings_programming_type": \n' + JSON.stringify($('form[name="settings_programming_type"]').serializeArray()) 
        + ',\n"settings_data_types": \n' + JSON.stringify($('form[name="settings_data_types"]').serializeArray()) 
        + ',\n"settings_commands": \n' + JSON.stringify($('form[name="settings_commands"]').serializeArray()) 
        + ',\n"settings_functions": \n' + JSON.stringify($('form[name="settings_functions"]').serializeArray()) 
        + ' } ';

    if ($("input[name='include_algo']").is(':checked')) {
      ret += '\n::algorithm::\n';
      ret += JSON.stringify(window.program_obj, function(key, value) {
          
          if (key == 'dom_object') {
              return;
          }
          return value; 
      });
    }

    return ret;
  }
}

function prepareTestCases () {
  var ret = ' \n "testcases" : [ '
  var test_cases_array = $('form[name="test_cases"]').serializeArray();
  console.log(test_cases_array);
  for (var i = 0; i < test_cases_array.length; i = i + 2) {
    ret += '\n{ ';
    ret += '\n "input": [';
    var inps = test_cases_array[i].value.match(/[^\r\n]+/g);
    if (inps) {
      for (var j = 0; j < inps.length; j++) {
        ret += '"' + inps[j].trim() + '"';
        if ((j + 1) < inps.length) {
          ret += ', ';
        }
      }
    }
    ret += '], \n "output": [';
    var outs = test_cases_array[i+1].value.match(/[^\r\n]+/g);
    if (outs) {
      for (var j = 0; j < outs.length; j++) {
        ret += '"' + outs[j].trim() + '"';
        if ((j + 1) < outs.length) {
          ret += ', ';
        }
      }
    }
    ret += ']';
    ret += '\n}'
    if ((i + 2) < test_cases_array.length) {
      ret += ',';
    }
  }
  ret += '\n] ';
  return ret;
}

// Função chamada pelo iTarefa para receber a nota do aluno na atividade
// O retorno é um valor entre 0.0 e 1.0
function getEvaluation () {
  if (iLMparameters.iLM_PARAM_SendAnswer == 'false') {
    // A chamada do método abaixo é obrigatória!
    // Observe que a chamada parte do iLM para o iTarefa
    //parent.getEvaluationCallback(window.studentGrade);

    runCodeAssessment();
  }
}

//var testCases = null
var settingsDataTypes = null;
var settingsCommands = null;
var settingsFunctions = null;
var settingsProgrammingTypes = null;
var algorithm_in_ilm = null;
var previousContent = null;

// Função para que o iMA leia os dados da atividade fornecidos pelo iTarefa
function getiLMContent () {

  // O parâmetro "iLM_PARAM_Assignment" fornece o URL do endereço que deve ser
  // requisitado via AJAX para a captura dos dados da atividade
  $.get(iLMparameters.iLM_PARAM_Assignment, function (data) {
    //professor invocou a avaliação automática dos exercícios do bloco
    if (iLMparameters.iLM_PARAM_TeacherAutoEval != null) {
        teacherAutoEval(data);
        //não deve exibir nenhuma interface...
        return;
    } else if (iLMparameters.iLM_PARAM_SendAnswer == 'false') {
        // Aluno está trabalhando em alguma atividade:
        previousContent = data;
        prepareActivityToStudent(data);
    } else { // Professor está editando uma atividade:
        previousContent = data;
        prepareActivityToEdit(data);
    }

    window.block_render = false;
    renderAlgorithm();
  });
}

function prepareActivityToEdit (ilm_cont) {
  //var content = JSON.parse(ilm_cont.split('\n::algorithm::')[0]);
  // Ver arquivo js/util/iassignHelpers.js
  var content = ivprogCore.prepareActivityToStudentHelper(ilm_cont);
  var testCases = ivprogCore.getTestCases();

  settingsProgrammingTypes = content.settingsProgrammingType;
  settingsDataTypes = content.settingsDataTypes;
  settingsCommands = content.settingsCommands;
  settingsFunctions = content.settingsFunctions;

  for (var i = 0; i < testCases.length; i++) {
    addTestCase(testCases[i]);
  }

  if (content.algorithmInIlm != null) {
    algorithm_in_ilm = content.algorithmInIlm;
    $("input[name='include_algo']").prop('checked', true);
    includePreviousAlgorithm();
    renderAlgorithm();
  }

  ivprogTextualOrVisual();
}

function parsePreviousAlgorithm () {
  window.program_obj.functions = JSON.parse(algorithm_in_ilm).functions;
  window.program_obj.globals = JSON.parse(algorithm_in_ilm).globals;
}

function includePreviousAlgorithm () {
  parsePreviousAlgorithm();

  window.watchW.watch(window.program_obj.globals, function(){
    if (window.insertContext) {
      setTimeout(function(){ renderAlgorithm(); }, 300);
      window.insertContext = false;
    } else {
      renderAlgorithm();
    }
  }, 1);

  for (var i = 0; i < window.program_obj.functions.length; i ++) {
    window.watchW.watch(window.program_obj.functions[i].parameters_list, function(){
      if (window.insertContext) {
        setTimeout(function(){ renderAlgorithm(); }, 300);
        window.insertContext = false;
      } else {
        renderAlgorithm();
      }
    }, 1);

    window.watchW.watch(window.program_obj.functions[i].variables_list, function(){
      if (window.insertContext) {
        setTimeout(function(){ renderAlgorithm(); }, 300);
        window.insertContext = false;
      } else {
        renderAlgorithm();
      }
    }, 1);

    if (window.program_obj.functions[i].is_main) {
        window.program_obj.functions[i].name = LocalizedStrings.getUI("start");
    }
  }

  window.watchW.watch(window.program_obj.functions, function(){
    if (window.insertContext) {
      setTimeout(function(){ renderAlgorithm(); }, 300);
      window.insertContext = false;
    } else {
      renderAlgorithm();
    }
  }, 1);
}

function prepareActivityToStudent (ilm_cont) {
    // Ver arquivo js/util/iassignHelpers.js
    var content = ivprogCore.prepareActivityToStudentHelper(ilm_cont);
    // Casos de testes agora são delegados ao tratamento apropriado pela função acima
    // var testCases = content.testcases;
    settingsProgrammingTypes = content.settingsProgrammingType;
    settingsDataTypes = content.settingsDataTypes;
    settingsCommands = content.settingsCommands;
    settingsFunctions = content.settingsFunctions;

    if (content.algorithmInIlm != null) {
        algorithm_in_ilm = content.algorithmInIlm;
        includePreviousAlgorithm();
    }
    $('.assessment_button').removeClass('disabled');
    renderAlgorithm();

    ivprogTextualOrVisual();
}

// Função para organizar se para criação, visualização ou resolução de atividade
function prepareEnvironment () {

  $('.div_to_body').click(function(e) {
    // trackingMatrix.push(adCoords(e, 1));
    ivprogCore.registerClick(e.pageX, e.pageY, e.target.classList['value']);
  });

  // Se iLM_PARAM_SendAnswer for false, então trata-se de resolução de atividade,
  // portanto, a "DIV" de resolução é liberada
  if (iLMparameters.iLM_PARAM_SendAnswer == 'false') {
    //$('.resolucao').css("display","block");
    getiLMContent();

    // $('.div_to_body').mousemove(function(e) {
    //     trackingMatrix.push(adCoords(e, 0));
    // });

    // $('.div_to_body').click(function(e) {
    //   // trackingMatrix.push(adCoords(e, 1));
    //   ivprogCore.registerClick(e.pageX, e.pageY, e.target.classList['value']);
    // });
  } else if (iLMparameters.iLM_PARAM_Assignment) {
    // Caso não esteja em modo de resolução de atividade, a visualização no momento
    // é para a elaboração de atividade:
    //$('.elaboracao').css("display","block");

    // Se possuir o parâmetro iLMparameters.iLM_PARAM_Assignment, o professor
    // está editando uma atividade:
    getiLMContent();
  } else {
    renderAlgorithm();
  }

  if ((iLMparameters.iLM_PARAM_AssignmentURL == "true") && (iLMparameters.iLM_PARAM_SendAnswer == "true")) {
    prepareActivityCreation();
  }
}

function ivprogTextualOrVisual () {
  if (settingsProgrammingTypes) {
    if (settingsProgrammingTypes == "textual") {
      $('.ivprog_visual_panel').css('display', 'none'); 
      $('.ivprog_textual_panel').css('display', 'block');
      $('.ivprog_textual_panel').removeClass('loading');

      $('.visual_coding_button').removeClass('active');
      $('.textual_coding_button').addClass('active'); 
      $('.visual_coding_button').addClass('disabled');
    }
    if (settingsProgrammingTypes == "visual") {
      
    }
  }
}

function iassingIntegration () {

  // Disable by default...
  $('.assessment_button').addClass('disabled');

  prepareEnvironment();
  if (inIframe()) {
    orderIcons();
    orderWidth();
  }
}

// Função para preparar a interface para o professor criar atividade:
function prepareActivityCreation () {

  $('.add_accordion').addClass('accordion');

  $('.default_visual_title').toggle();
  $('.default_visual_title').append('<span>'+LocalizedStrings.getUI('text_teacher_algorithm')+'</span>');
  $('.height_100').removeClass('height_100');
  $('.main_title').remove();
  $('.ui.accordion').addClass('styled');
  
  $('<div class="content_margin"></div>').insertBefore($('.add_accordion').find('.content').find('.div_to_body'));

  $('<div class="ui checkbox"><input type="checkbox" name="include_algo" class="include_algo" tabindex="0" class="hidden"><label>'+LocalizedStrings.getUI('text_teacher_algorithm_include')+'</label></div>').insertAfter('.content_margin');
  
  var cases_test_div = $('<div class="ui accordion styled"><div class="active title"><i class="dropdown icon"></i>'+LocalizedStrings.getUI('text_teacher_test_case')+'</div><div class="active content"></div></div>');

  cases_test_div.insertBefore('.accordion');

  var config_div = $('<div class="ui accordion styled"><div class="title"><i class="dropdown icon"></i>'+LocalizedStrings.getUI('text_teacher_config')+'</div><div class="content"></div></div>');

  config_div.insertAfter(cases_test_div);

  $('.ui.accordion').accordion();

  $('.ui.checkbox').checkbox();

  prepareTableSettings(config_div.find('.content'));

  prepareTableTestCases(cases_test_div.find('.content'));

  if (inIframe()) {
      $('.ui.styled.accordion').css('width', '96%');
  }
}

function prepareTableTestCases (div_el) {

  var table_el = '<form name="test_cases"><table class="ui blue table"><thead><tr><th width="30px">#</th><th>'+LocalizedStrings.getUI('text_teacher_test_case_input')+'</th><th>'+LocalizedStrings.getUI('text_teacher_test_case_output')+'</th><th width="80px">'+LocalizedStrings.getUI('text_teacher_test_case_actions')+'</th></tr></thead>'
    + '<tbody class="content_cases"></tbody></table></form>';

  div_el.append(table_el);

  div_el.append('<button class="ui teal labeled icon button button_add_case"><i class="plus icon"></i>'+LocalizedStrings.getUI('text_teacher_test_case_add')+'</button>');

  $('.button_add_case').on('click', function(e) {
    addTestCase();
  });
}

var hist = false;

function addTestCase (test_case = null) {
  var new_row = null;
  if (test_case) {
    var text_row = '';

    text_row += '<tr><td class="counter"></td><td class="expandingArea"><textarea rows="'+test_case.input.length+'" name="input" class="text_area_input">';

    for (var i = 0; i < test_case.input.length; i ++) {
      text_row += test_case.input[i];
      if ((i + 1) < test_case.input.length) {
        text_row += '\n';
      }
    }
    
    text_row += '</textarea></td><td class="expandingArea"><textarea rows="'+test_case.output.length+'" name="output" class="text_area_output">';

    for (var i = 0; i < test_case.output.length; i ++) {
      text_row += test_case.output[i];
      if ((i + 1) < test_case.output.length) {
        text_row += '\n';
      }
    }

    text_row += '</textarea></td><td class="btn_actions"><div class="ui button_remove_case"><i class="red icon times large"></i></div></td></tr>';

    new_row = $(text_row);
  } else {
      new_row = $('<tr><td class="counter"></td><td class="expandingArea"><textarea rows="1" name="input" class="text_area_input"></textarea></td><td class="expandingArea"><textarea rows="1" name="output" class="text_area_output"></textarea></td><td class="btn_actions"><div class="ui button_remove_case"><i class="red icon times large"></i></div></td></tr>');
  }
  $('.content_cases').append(new_row);

  new_row.find('.button_remove_case').click(function(e) {
      new_row.remove();
      updateTestCaseCounter();
  });

  new_row.find('textarea').on('input', function(e) {
      var lines = $(this).val().split('\n').length;
      $(this).attr('rows', lines);
  });
  
  updateTestCaseCounter();

  $('.text_area_output').keydown(function(e) {
    var code = e.keyCode || e.which;
    if (code == 9 && $(this).closest("tr").is(":last-child")) {
      hist = true;
      addTestCase();
    }
  });
  if (test_case == null) {
    if (!hist) {
      $( ".content_cases tr:last" ).find('.text_area_input').focus();
    } else {
      hist = false;
    }
  }
}

function updateTestCaseCounter () {
    var i = 1;
    $( ".content_cases" ).find('tr').each(function() {
      $( this ).find('.counter').text(i);
      ++i;
    });
}


function prepareTableSettings (div_el) {

  div_el.append('<h4 class="ui header">'+LocalizedStrings.getUI('text_config_programming')+'</h4>');
  div_el.append('<form name="settings_programming_type"><div class="ui stackable five column grid">'
    +'<div class="column"><div class="ui radio"><input type="radio" name="programming_type" id="programming_textual" value="textual" tabindex="0" class="hidden small"><label for="programming_textual">'+LocalizedStrings.getUI('text_config_programming_textual')+'</label></div></div>'
    +'<div class="column"><div class="ui radio"><input type="radio" name="programming_type" id="programming_visual" value="visual" checked tabindex="0" class="hidden small"><label for="programming_visual">'+LocalizedStrings.getUI('text_config_programming_visual')+'</label></div></div>'
    +'</div></form>');

  div_el.append('<h4 class="ui header">'+LocalizedStrings.getUI('text_teacher_data_types')+'</h4>');
  div_el.append('<form name="settings_data_types"><div class="ui stackable five column grid">'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="integer_data_type" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('integer')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="real_data_type" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('real')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="text_data_type" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="boolean_data_type" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('boolean')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="void_data_type" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('void')+'</label></div></div>'
    +'</div></form>');

  div_el.append('<h4 class="ui header">'+LocalizedStrings.getUI('text_teacher_commands')+'</h4>');
  div_el.append('<form name="settings_commands"><div class="ui stackable three column grid">'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_read" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_read_var')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_write" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_write_var')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_comment" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_comment')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_attribution" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_attribution')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_functioncall" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_functioncall')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_iftrue" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_iftrue')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_repeatNtimes" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_repeatNtimes')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_while" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_whiletrue')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_dowhile" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_dowhiletrue')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="commands_switch" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_switch')+'</label></div></div>'
    +'</div></form>');

  div_el.append('<h4 class="ui header">'+LocalizedStrings.getUI('text_teacher_functions')+'</h4>');
  div_el.append('<form name="settings_functions"><div class="ui stackable one column grid">'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="functions_creation" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_teacher_create_functions')+'</label></div></div>'
    +'<div class="column"><div class="ui checkbox"><input type="checkbox" name="functions_move" checked tabindex="0" class="hidden small"><label>'+LocalizedStrings.getUI('text_teacher_create_movement_functions')+'</label></div></div>'
    +'</div></form>');

  $('.ui.checkbox').checkbox();

}

function getTrackingLogs () {
  return ivprogCore.getLogsAsString();
  // var ret = "";
  // for (var i = 0; i < trackingMatrix.length; ++i) {
  //   ret += "\n" + trackingMatrix[i][0] + "," + trackingMatrix[i][1] + "," + trackingMatrix[i][2];
  //   if (trackingMatrix[i][3] === 1) {
  //     ret += ',' + trackingMatrix[i][3] + ',"' + trackingMatrix[i][4] + '"';
  //   }
  // }
  // return ret;
}

// Tracking mouse movements
// var trackingMatrix = [];

/* function adCoords(e, code){
  var x = e.pageX; 
  var y = e.pageY;
  if (code === 1) {
    return [new Date().getTime(), x, y, code, e.target.classList['value']];
  } else {
    return [x, y, code];
  }
} */

// $( document ).ready(function() {

//     if (inIframe()) {
//         orderIcons();
//         orderWidth();
//     }
//     renderAlgorithm();
// });

function orderWidth() {
  $('.ui.raised.container.segment.div_to_body').css('width', '100%');
  $('.ui.one.column.container.segment.ivprog_visual_panel').css('width', '100%');
}

function orderIcons() {
  $('.ui.one.column.doubling.stackable.grid.container').css('display', 'none');
  $('.only_in_frame').css('display', 'block');
}


function inIframe () {
  try {
    return window.self !== window.top;
  } catch (e) {
    return true;
  }
}


function full_screen() {
  // check if user allows full screen of elements. This can be enabled or disabled in browser config. By default its enabled.
  //its also used to check if browser supports full screen api.
  if("fullscreenEnabled" in document || "webkitFullscreenEnabled" in document || "mozFullScreenEnabled" in document || "msFullscreenEnabled" in document) {
    if(document.fullscreenEnabled || document.webkitFullscreenEnabled || document.mozFullScreenEnabled || document.msFullscreenEnabled) {
      var element = document.getElementById("ui_main_div");
      //requestFullscreen is used to display an element in full screen mode.
      if("requestFullscreen" in element) {
        element.requestFullscreen();
      } 
      else if ("webkitRequestFullscreen" in element) {
        element.webkitRequestFullscreen();
      } 
      else if ("mozRequestFullScreen" in element) {
        element.mozRequestFullScreen();
      } 
      else if ("msRequestFullscreen" in element) {
        element.msRequestFullscreen();
      }
    }
  } else {
    $('.expand_button').addClass('disabled');
  }
}

function teacherAutoEval (data) {
  $.get(iLMparameters.iLM_PARAM_TeacherAutoEval, function (originalData) {
    // Ver arquivo js/util/iassignHelpers.js
    var content = ivprogCore.prepareActivityToStudentHelper(data);
    // Casos de testes agora são delegados ao tratamento apropriado pela função acima
    // var testCases = content.testcases;
    settingsProgrammingTypes = content.settingsProgrammingType; 
    settingsDataTypes = content.settingsDataTypes;
    settingsCommands = content.settingsCommands;
    settingsFunctions = content.settingsFunctions;

    if (content.algorithmInIlm != null) {
      algorithm_in_ilm = content.algorithmInIlm;
      parsePreviousAlgorithm();
      ivprogCore.autoEval(originalData, parent.getEvaluationCallback);
    }

    ivprogTextualOrVisual();
  });
}