TopCutCalc/index.html at master · antsy/TopCutCalc · GitHub

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<html>

<head>
    <title>Antti's top cut calculator</title>
    <meta property="og:title" content="Antti's top cut calculator" />
    <meta property="og:type" content="website:tool" />
    <meta property="og:locale" content="en_GB" />
    <meta property="og:url" content="https://github.com/antsy/TopCutCalc" />
    <meta property="og:description"
        content="Calculate how many players will make it to the top through swiss rounds." />
    <meta property="og:image"
        content="https://upload.wikimedia.org/wikipedia/commons/a/a7/Korvatunturi_kes%C3%A4ll%C3%A4.jpg" />
    <meta property="og:image:type" content="image/jpeg" />
    <meta property="og:image:width" content="524" />
    <meta property="og:image:height" content="254" />
</head>
<style>
    @import url('https://fonts.googleapis.com/css2?family=Oswald&family=Raleway:wght@300&family=Roboto+Mono&display=swap');

    :root {
        --scale: 1vmin;
    }


    h1, h2, #resultHead {
        font-family: 'Oswald', sans-serif;
        font-size: calc(var(--scale) * 6);
        margin-top: calc(var(--scale) * 2);
        margin-bottom: calc(var(--scale) * 2);
    }

    #resultHead {
        font-size: calc(var(--scale) * 2.4);
    }

    p, input, label, #resultTable {
        font-family: 'Raleway', sans-serif;
        font-size: calc(var(--scale) * 2.4);
    }

    #TopCutCalc {
        display: grid;
        grid-template-columns: 1fr 80% 1fr;
    }

    #inputs {
        grid-column: 2 / -2;
        display: grid;

        grid-template-columns: 2fr 100px 3fr;
        grid-gap: calc(var(--scale) * 1.6);
    }

    #inputs>h1 {
        grid-row-start: 1;
        grid-column-end: span 3;
    }

    #inputs>label {
        grid-column: 1;
    }

    #inputs>input {
        color: rgb(11, 87, 250, 1);
        grid-column: 2;
        text-align: center;
        font-family: 'Roboto Mono', monospace;
        border-radius: 1vmin;
        -webkit-transition: all 0.30s ease-in-out;
        -moz-transition: all 0.30s ease-in-out;
        -ms-transition: all 0.30s ease-in-out;
        -o-transition: all 0.30s ease-in-out;
        outline: none;
        padding: 3px 0px 3px 3px;
        margin: 5px 1px 3px 0px;
        border: 1px solid #DDDDDD;
    }

    #inputs>input:focus {
        box-shadow: 0 0 5px rgb(11, 87, 250, 0.5);
        padding: 3px 0px 3px 3px;
        margin: 5px 1px 3px 0px;
        border: 1px solid rgb(11, 87, 250, 0.8);;
    }

    #inputs .note {
        font-size: calc(var(--scale) * 1.8);
        grid-column-end: span 2;
    }

    #outputs {
        grid-column: 2 / -2;
        display: grid;
    }

    #outputs table {
        width: auto;
    }

    #resultHead {
        display: grid;
        grid-template-columns: 2fr 3fr 3fr;
    }

    #resultTable {
        display: grid;
        grid-template-columns: 2fr 3fr 3fr;
    }

    #inDanger {
        font-weight: bold;
        font-family: 'Oswald', sans-serif;
    }

    .record {
        font-family: 'Roboto Mono', monospace;
        letter-spacing: -0.2rem;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .note {
        font-style: italic;
    }
</style>
<script src="topcutcalc.js"></script>

<body>
    <div id="TopCutCalc">
        <div id="inputs">
            <h1>Antti's top cut calculator</h1>
            <label for="playerCount">Total number of players</label>
            <input id="playerCount" name="playerCount" type="number" value="64" />
            <label for="swissRounds">Number of swiss rounds</label>
            <input id="swissRounds" name="swissRounds" type="number" value="6" />
            <label for="topCut">How many make it to the top</label>
            <input id="topCut" name="topCut" type="number" value="" />
            <p class="note">The results will update automatically as input values change.</p>
        </div>
        <div id="outputs">
            <h2>Result records estimate</h2>
            <p id="explanation"></p>
            <div id="resultHead">
                <div>Record</div>
                <div>Number of players with record</div>
                <div>Percentage of all players</div>
            </div>
            <div id="resultTable"></div>
            <p id="inDanger"></p>
        </div>
    </div>
    <script>

        const getCurrentValues = () => {
            const inputs = document.getElementById('inputs');
            const playerCount = +(inputs.querySelector('#playerCount').value);
            const swissRounds = +(inputs.querySelector('#swissRounds').value);
            const topCut = +(inputs.querySelector('#topCut').value);

            return {
                playerCount: playerCount,
                swissRounds: swissRounds,
                topCut: topCut,
            }
        }

        const updateOutputs = (e) => {
            const output = document.getElementById('outputs');
            const explanation = output.querySelector('#explanation');
            const resultTable = output.querySelector('#resultTable');
            const inDanger = output.querySelector('#inDanger');

            const { playerCount, swissRounds, topCut } = getCurrentValues();

            if (topCut < playerCount && topCut > 0) {
                explanation.innerHTML = `In a ${playerCount} player ${swissRounds} rounds tournament, the Top${topCut} will consist of records:`;
            } else {
                explanation.innerHTML = `In a ${playerCount} player ${swissRounds} rounds tournament, the final record distribution will look something like this:`;
            }

            const resultData = calculate(playerCount, swissRounds, topCut);
            const results = getTable(resultData, swissRounds);

            resultTable.innerHTML = "";

            for (let result of results) {
                const cell1 = document.createElement('div');
                cell1.classList = "record"
                cell1.appendChild(document.createTextNode(`${result.record}`));
                const cell2 = document.createElement('div');
                cell2.appendChild(document.createTextNode(`${result.howMany.toFixed(2)}`));
                const cell3 = document.createElement('div');
                cell3.appendChild(document.createTextNode(percentFrom(result.howMany, playerCount)));

                resultTable.appendChild(cell1)
                resultTable.appendChild(cell2)
                resultTable.appendChild(cell3)
            }

            let cutOff = topCut;
            for (let result of results) {
                if (result.howMany <= cutOff) {
                    cutOff -= result.howMany;
                }
            }

            if (topCut < playerCount && topCut > 0) {
                const lastRecord = results[results.length - 1];
                if (cutOff != 0) {
                    const plural = cutOff === 1 ? `only a single player` : `${cutOff} players`
                    const percentage = percentFrom(cutOff, lastRecord.howMany);
                    inDanger.innerHTML = `Out of ${lastRecord.howMany} players with record "${lastRecord.record}", ${plural} (${percentage}) will make it to the top${topCut}.`;
                } else {
                    inDanger.innerHTML = `Looks like no player with record lower than ${lastRecord.record} can make it to the Top${topCut}`
                }
            } else {
                inDanger.innerHTML = "";
            }
        }

        const percentFrom = (value1, value2) => {
            return `${(value1 / value2 * 100).toFixed(1)} %`;
        }

        (function () {
            const inputs = document.getElementsByTagName('INPUT');
            for (let input of inputs) {
                input.addEventListener('change', updateOutputs, false);
            }

            // Do initial update with default values
            updateOutputs();
        })();
    </script>
</body>

</html>