window.from_date = null;
window.to_date = null;
window.student_ids = [];
window.course_id = 1;
window.to_draw = [];
window.load_draw_interval = null;
window.load_students_interval = null;
window.load_date_interval - null;
window.in_draw = false;
window.students = {};
window.change_color_index = 0;
function start_load() {
    window.load_students_interval = null;
    load_students();
    $('[name=load_button]').fadeOut(function () {
        $('[name=preloader]').fadeIn();
        $('[name=stop_button]').fadeIn();
    });
}
function stop_load() {
    clearInterval(window.load_students_interval);
    clearInterval(window.load_draw_interval);
    $('[name=stop_button]').fadeOut();
    $('[name=preloader]').fadeOut(function () {

        $('[name=load_button]').fadeIn();
    });

}
function load_students(){
    // Загрузить карту по 
    if (!window.load_students_interval){
        start_load();
    }
    function start_load(){
        window.student_ids = [];
        window.load_students_interval = setInterval( function(){load_map();}, 300);
    }
    function stop_load_process(){
        clearInterval(window.load_students_interval);
        window.load_students_interval = null;
        draw_interval()
    }
    function load_map(){
        if (check_load_finish()){
            console.log('Остановка');
            stop_load_process();
        } else {
            get_students();
            console.log('Получаю');
        }
    }
}

function draw_interval(){
    // Загрузить карту по
    if (!window.load_draw_interval){
        start_load();
    }
    function start_load(){
        window.student_ids = [];
        window.load_draw_interval = setInterval( function(){draw_map();}, 1000);
    }
    function stop_load_process(){
        clearInterval(window.load_draw_interval);
        window.load_draw_interval = null;
        console.log('Остановил');
        $('[name=date_block]').fadeIn('slow');
        stop_load();
    }
    function draw_map(){
        if (window.in_draw){
            console.log('Пропускаю событие')
        } else if (window.to_draw.length == 0){
            console.log('Остановка');
            stop_load_process();
        } else {
            draw_raw(window.to_draw.pop());
            $('[name=preload_status]').html('Отрисовка:' +window.to_draw.length);
            console.log('Рисую');
        }
    }
}


function change_date_color(){
    // Загрузить карту по
    if (!window.load_date_interval){
        start_load();
    }
    function start_load(){
        window.load_date_interval = setInterval( function(){load_map();}, 100);
    }
    function stop_load_process(){
        clearInterval(window.load_date_interval);
        window.load_date_interval = null;
        window.students = {};
    }
    function load_map(){
        if (!window.change_color.length <= window.change_color_index){
            draw_date(window.change_color[window.change_color_index]);
            window.change_color_index += 1;
        } else {
            stop_load_process()
        }
    }
}

function refactor_exclude() {
    var result = '';
    for (var i in window.student_ids){
        result += window.student_ids[i];
        result += '_';
    }
    return result
}

function draw_raw(data) {
    window.in_draw = true;
    for (var point in data){
        var p = $('[point='+data[point]['point']+']');
        p.attr('s_date', data[point]['s_date']).attr('f_date', data[point]['f_date']).attr('tp', data[point]['type']).show();
        if (data[point]['type'] == 'H'){
            p.css('border-top', '3px solid #999')
        } else if (data[point]['type'] == 'E'){
            p.css('border-top', '3px solid #ff1')
        }
    }
    window.in_draw = false;
}

function draw_date(data) {
        var result = false;
        var ob = $(data);
        if (window.from_date){
            if (!parseInt(ob.attr('s_date'), 10) >= window.from_date){
                console.log('Ставлю от'+ parseInt(ob.attr('s_date'), 10));
                result = true
            } else {
                console.log('Пропускаю от'+ parseInt(ob.attr('s_date'), 10));
            }
        }
        if (window.to_date){
            if (!parseInt(ob.attr('f_date'), 10) <= window.from_date){
                console.log('Ставлю до'+ parseInt(ob.attr('f_date'), 10));
                result = true
            } else {
                console.log('Пропускаю до'+ parseInt(ob.attr('f_date'), 10));
            }
        }
        if (result){
            $(ob).css('background', 'green')
        } else {
            $(ob).css('background', '#ccc')
        }
}
function get_students(){
    var response = '';
            $.ajax({
            type: 'GET',
              url: '/management/reports/get_course_students/',
              data: {'course': window.course_id, 'exc': refactor_exclude()},
              success: function(data){
                  if(data.code == '1'){
                    window.to_draw.push(data['data'])
                    if (!in_array(data['response'], window.student_ids)){
                        window.student_ids.push(data['response'])
                        window.students[data['response']] = data['data'];
                    }
                    $('[name=preload_status]').html('Загрузка: ' + (window.student_ids.length*100/parseInt($('[name=course_'+window.course_id+'_length]').html(), 10)).toFixed(2) + '%')
                  } else {
                    response = null;
                  }
              }
            });
    return response
}

function check_load_finish() {
    var response = '';
            $.ajax({
            type: 'GET',
              url: '/management/reports/progress_check_result/',
              data: {'course': window.course_id, 'len': window.student_ids.length},
                async: false,
              success: function(data){
                  if (data['code'] == '1'){
                      response = true
                  } else {
                      response = false
                  }
              }
            });
    return response
}

function change_progress_color() {
    window.change_color = $('td[course='+window.course_id+']');
    change_date_color();
}