NDOJ/templates/contest/media-js.html

<script src="//cdn.jsdelivr.net/npm/featherlight@1.7.14/release/featherlight.min.js" type="text/javascript" charset="utf-8"></script>
<script type="text/javascript">
    function isFaster(time1, time2) {
        let arr1 = time1.split(':');
        let arr2 = time2.split(':');

        for (let i in arr1) {
            let val1 = parseInt(arr1[i]);   
            let val2 = parseInt(arr2[i]);
            if (val1 < val2) return true;
            if (val1 > val2) return false;
        }
        return false;
    }

    function scoretimeComparison(sub1, sub2) {
        if (!sub2) return true;
        return sub1['score'] > sub2['score'] || (sub1['score'] === sub2['score'] && isFaster(sub1['time'], sub2['time']));
    }

    function highlightFirstSolve() {
        // bucket to store submissions by problems
        let bestSubmissions = {};

        // get information
        $('td a').each(function() {
            var td = $(this)[0];
            var link = $(this).attr('data-featherlight');
            if (link && link.includes('submissions')) {
                let scoreAndTime = (td.innerText.split('\n'))
                let linkElements = link.split('/')

                // get information
                let problem = linkElements[linkElements.length - 2];
                let score = parseFloat(scoreAndTime[0].replace(',', '.'));
                let time = scoreAndTime[1];

                if (time) {
                    let curSubmission = {
                        'td': $(this).parent(),
                        'score': score,
                        'time': time 
                    }

                    // update best submissions
                    let curBest = bestSubmissions[problem]

                    if (scoretimeComparison(curSubmission, curBest) && score) {
                        bestSubmissions[problem] = curSubmission;
                    } 
                }
            }
        })
        for (let problem in bestSubmissions) {
            bestSubmissions[problem]['td'].addClass('first-solve')
        }
    }

    function renew_filter(need_update=true) {
        var checkboxes = [
            '#show-schools-checkbox',
            '#show-fullnames-checkbox',
            '#show-total-score-checkbox',
        ];

        var checkboxes2 = [
            '#show-friends-checkbox',
            '#show-virtual-checkbox'
        ]

        for (var i of checkboxes) {
            var $box = $(i);
            if ($box.is(':checked')) {
                $box.prop('checked', false);
                $box.click();
                $box.prop('checked', true);
            }
        }

        var to_update = false;
        for (var i of checkboxes2) {
            var $box = $(i);
            if ($box.is(':checked')) {
                to_update = true;
            }
        }
        if (to_update && need_update) {
            update_ranking();
        }
    }

    function get_initial_rank() {
        var ranks = $('.rank-td').map(function() {return this.innerHTML}).get();
        var usernames = $('.user-name .rating a').map(function() {return this.text}).get();
        window.user_rank = new Map();
        for (var i = 0; i < ranks.length; i++) {
            window.user_rank[usernames[i]] = ranks[i];
        }
    }

    function add_initial_friend_rank() {
        var usernames = $('.user-name .rating a').map(function() {return this.text}).get();

        var is_virtual = [];
        $('.user-name').each(function() {
            if($(this).children('sub').length) {
                is_virtual.push(1);
            }
            else is_virtual.push(0);
        });

        $('.rank-td').each(function(i) {
            if (!is_virtual[i]) this.innerHTML += ' (' + window.user_rank[usernames[i]] + ')';
        });
    }

    function update_ranking() {
        var friend = $('#show-friends-checkbox').is(':checked');
        var virtual = $('#show-virtual-checkbox').is(':checked');
        $('#loading-gif').show();
        var url = `{{url('contest_ranking_ajax', contest.key)}}?friend=${friend}&virtual=${virtual}`;
        {% if page_type == 'final_ranking' %}
            url += "&final=true";
        {% endif %}
        $.get({
            url: url,
            success: function(HTML) {
                $('#users-table').html(HTML);
                highlightFirstSolve();
                renew_filter(false);
                $('#loading-gif').hide();
                if (!virtual && !friend) {
                    get_initial_rank();
                }
                if (friend) {
                    add_initial_friend_rank();
                }
            },
            fail: function() {
                console.log('Fail to update ranking');
            }
        });
    }

    $(function () {
        $('.leaving-forever').click(function () {
            return confirm('{{ _('Are you sure you want to leave?') }}\n' +
                '{{ _('You cannot come back to a virtual participation. You will have to start a new one.') }}');
        });

        $('.first-join').click(function () {
            return confirm('{{ _('Are you sure you want to join?') }}\n' +
                '{{ _('Joining a contest starts your timer, after which it becomes unstoppable.') }}');
        });

        var url = '{{ url('contest_participation', contest.key, '__username__') }}';
        var placeholder = $('#search-contest').replaceWith($('<select>').attr({
            id: 'search-contest'
        })).attr('placeholder');

        $('#search-contest').select2({
            placeholder: placeholder,
            ajax: {
                url: '{{ url('contest_user_search_select2_ajax', contest.key) }}'
            },
            minimumInputLength: 1,
            escapeMarkup: function (markup) {
                return markup;
            },
            templateResult: function (data, container) {
                return ('<img class="user-search-image" src="' + data.gravatar_url + '" width="24" height="24">' +
                    '<span class="' + data.display_rank + ' user-search-name">' + data.text + '</span>');
            }
        }).on('change', function () {
            window.location.href = url.replace('__username__', $(this).val());
        });

        $('#show-schools-checkbox').click(function () {
            $('.school').toggle();
        });
        $('#show-fullnames-checkbox').click(function () { 
            $('.fullname').toggle();
        });

        {% if request.user.is_authenticated %}
            $('#show-friends-checkbox').click(function() {
                update_ranking();
            })
        {% endif %}
        $('#show-virtual-checkbox').click(function() {
            update_ranking();
        })
        $('#show-total-score-checkbox').click(function() {
            $('.problem-score-col').toggle();    
        })

        highlightFirstSolve();
        renew_filter();
        get_initial_rank();

        {% if participation_tab %}
            $('#show-virtual-checkbox').hide();
            $('#show-virtual-label').hide();
        {% else %}
            {% if request.in_contest %} 
                clearInterval(window.rankingInterval);
                window.rankingInterval = setInterval(update_ranking, 60 * 1000);
            {% endif %}
        {% endif %}
    });

</script>