{% extends "base.html" %}

{% block content %}
<section class="section">
    <div class="container">
        <h1 class="title">Faire une acquisition</h1>
        <div class="mb-2">
            <p>Placez l'objet devant le scanner puis appuyez sur le bouton pour lancer l'acquisition.</p>
        </div>
        <div class="field is-grouped is-grouped-multiline">
            <div class="control">
                <button {% if not calibrated or (acquisition and acquisition.validated) %}disabled{% endif %} id="scan-button" class="button is-link" {% if acquisition and acquisition.validated %}title="Vous ne pouvez pas refaire cette acquisition car elle a été validée"{% elif not calibrated %}title="Étalonnez le scanner pour pouvoir lancer l'acquisition"{% endif %}>Lancer l'acquisition</button>
            </div>
        </div>
        <article id="error-container" class="message is-danger" style="display: none;">
            <div id="error-content" class="message-body">
            </div>
        </article>
        <div class="fixed-grid has-8-cols">
            <div id="grid" class="grid">

            </div>
        </div>
        <progress id="progress-bar" class="progress is-link" style="display: none;" value="0" max="1000"></progress>
        <div id="calibrate" {% if not acquisition %}style="display: none;"{% endif %}>
            <p>Si les données acquises conviennent, appuyez sur le bouton ci-dessous pour valider l'acquisition.</p>
            {% if acquisition %}
                {% if acquisition.validated %}
                    <button disabled id="calibrate-button" class="button is-link">Cette acquisition a déjà été validée</button>
                {% else %}
                    <a href="/validate-acquisition/{{ acquisition.id }}" id="calibrate-button" class="button is-link">Valider l'acquisition</a>
                {% endif %}
            {% else %}
                <a id="calibrate-button" class="button is-link">Valider l'acquisition</a>
            {% endif %}
            <a id="delete-button" class="button is-danger" {% if acquisition %}href="/delete-acquisition/{{ acquisition.id }}"{% endif %}>Supprimer l'acquisition</a>
        </div>
    </div>
</section>
{% endblock content %}

{% block extrajs %}
<script>
    let acquisitionId = {% if acquisition %}{{ acquisition.id }}{% else %}null{% endif %};
    let scanIndex = 1;
    let progress = 0;
    let scanButton = document.getElementById('scan-button');
    let progressBar = document.getElementById('progress-bar');
    let grid = document.getElementById('grid');
    let buttons = [scanButton];
    let errorContainer = document.getElementById('error-container');
    let errorContent = document.getElementById('error-content');
    let calibrateDiv = document.getElementById('calibrate');
    let calibrateButton = document.getElementById('calibrate-button');
    let deleteButton = document.getElementById('delete-button');

    // If we already have calibration images, we show them right now
    if (acquisitionId !== null) {
        let cell, img;
        {% for led in leds %}
        cell = document.createElement('div');
        cell.classList.add('cell');
        img = document.createElement('img');
        img.classList.add('is-loading');
        img.src = '/data/objects/{{ object.id }}/' + acquisitionId + '/{{ led }}.jpg?v=0';
        cell.appendChild(img);
        grid.appendChild(cell);
        {% endfor %}
    }

    scanButton.addEventListener('click', async () => {
        scanIndex++;
        progress = 0;
        progressBar.value = 0;
        buttons.forEach(x => x.setAttribute('disabled', 'disabled'));
        scanButton.classList.add('is-loading');
        progressBar.style.display = "block";
        grid.innerHTML = '';

        let response;
        if (acquisitionId === null) {
            response = await fetch('/api/scan-for-object/{{ object.id }}');
        } else {
            response = await fetch('/api/scan-for-acquisition/' + acquisitionId);
        }

        let reader = response.body.pipeThrough(new TextDecoderStream()).getReader();

        while (true) {
            let { value, done } = await reader.read();

            if (done) {
                buttons.forEach(x => x.removeAttribute('disabled'));
                scanButton.classList.remove('is-loading');
                calibrateDiv.style.display = "block";
                break;
            }

            if (acquisitionId === null) {
                acquisitionId = parseInt(value, 10);
                calibrateButton.setAttribute('href', '/validate-acquisition/' + acquisitionId);
                deleteButton.setAttribute('href', '/delete-acquisition/' + acquisitionId);
                window.history.pushState('', '', '/scan-acquisition/' + acquisitionId);
                continue;
            }

            let [ uuid, ratio ] = value.trim().split(',');
            progress = Math.ceil(1000 * parseFloat(ratio));
            let cell = document.createElement('div');
            cell.classList.add('cell');
            let img = document.createElement('img');
            img.classList.add('is-loading');
            img.src = '/data/objects/{{ object.id }}/' + acquisitionId + '/' + uuid + '.jpg?v=' + scanIndex;
            cell.appendChild(img);
            grid.appendChild(cell);
        }
    });

    function refreshProgressBar() {
        if (progress !== progressBar.value) {
            progressBar.value = Math.min(progressBar.value + 5, progress);
        }
        requestAnimationFrame(refreshProgressBar);
    }

    refreshProgressBar();
</script>
{% endblock extrajs %}