{% extends 'base.html' %}
{% block content %}
<div class="container-fluid mt-4">
    <h1 class="h3 mb-4 text-gray-800">Mode Scan : {% if course %}{{ course.nom }} ({{ course.date }}){% endif %}</h1>
    <div class="row">
        <div class="col-lg-8 mx-auto">
            <div class="card shadow mb-4">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">Scanner un coureur</h6>
                </div>
                <div class="card-body">
                        <div id="reader" style="width:100%; max-width:400px; margin:auto;"></div>
                        <div id="scanResult" class="mt-3"></div>
                    {% if error %}
                        <div class="alert alert-danger mt-3">{{ error }}</div>
                    {% endif %}
                </div>
            </div>
            <div class="card shadow mb-4">
                <div class="card-header py-3">
                    <h6 class="m-0 font-weight-bold text-primary">Actions</h6>
                </div>
                <div class="card-body d-flex justify-content-between">
                    <a href="/" class="btn btn-secondary">Menu principal</a>
                    <button id="toggleBeep" type="button" class="btn btn-info">Désactiver bip scan</button>
                </div>
            </div>
        </div>
    </div>
</div>
{% endblock %}
{% block extra_js %}
<script src="{% static 'html5-qrcode/html5-qrcode.min.js' %}"></script>
<script>
function beep() {
    const ctx = new(window.AudioContext || window.webkitAudioContext)();
    const oscillator = ctx.createOscillator();
    oscillator.type = 'sine';
    oscillator.frequency.setValueAtTime(1000, ctx.currentTime);
    oscillator.connect(ctx.destination);
    oscillator.start();
    setTimeout(() => { oscillator.stop(); ctx.close(); }, 150);
}

let lastScanned = '';
let html5QrCode;

function getCookie(name) {
    var cookieValue = null;
    if (document.cookie && document.cookie !== '') {
        var cookies = document.cookie.split(';');
        for (var i = 0; i < cookies.length; i++) {
            var cookie = jQuery.trim(cookies[i]);
            // Does this cookie string begin with the name we want?
            if (cookie.substring(0, name.length + 1) === (name + '=')) {
                cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                break;
            }
        }
    }
    return cookieValue;
}

document.addEventListener('DOMContentLoaded', function() {
    html5QrCode = new Html5Qrcode("reader");
    Html5Qrcode.getCameras().then(cameras => {
        if (cameras && cameras.length) {
            html5QrCode.start(
                cameras[0].id,
                { fps: 10, qrbox: 250 },
                onScanSuccess
            );
        }
    });

    // Plus aucune référence à l’ancien form ou input qrcode
});
function getCourseIdFromUrl() {
    const params = new URLSearchParams(window.location.search);
    return params.get('course_id');
}
function onScanSuccess(decodedText, decodedResult) {
    console.log('Scan détecté:', decodedText, 'Course:', getCourseIdFromUrl());
    if (decodedText === lastScanned || window.scanDebounce) return;
    window.scanDebounce = true;
    lastScanned = decodedText;
    beep();
    const courseId = getCourseIdFromUrl();
    if (!courseId) {
        window.scanDebounce = false;
        return;
    }
    fetch("{% url 'scan' %}" + window.location.search, {
        method: 'POST',
        headers: {
            'Content-Type': 'application/x-www-form-urlencoded',
            'X-CSRFToken': getCookie('csrftoken'),
            'X-Requested-With': 'XMLHttpRequest'
        },
        body: `course_id=${courseId}&qrcode=${encodeURIComponent(decodedText)}`
    })
    .then(response => response.text())
    .then(html => {
        document.getElementById('scanResult').innerHTML = html;
        window.scanDebounce = false;
    })
    .catch(() => {
        window.scanDebounce = false;
    });
}
document.addEventListener('DOMContentLoaded', function() {
    const beepBtn = document.getElementById('toggleBeep');
    let beepEnabled = true;
    beepBtn.onclick = function() {
        beepEnabled = !beepEnabled;
        beepBtn.textContent = beepEnabled ? 'Désactiver bip scan' : 'Activer bip scan';
    };
    window.beep = function() {
        if (!beepEnabled) return;
        const ctx = new(window.AudioContext || window.webkitAudioContext)();
        const oscillator = ctx.createOscillator();
        oscillator.type = 'sine';
        oscillator.frequency.setValueAtTime(1000, ctx.currentTime);
        oscillator.connect(ctx.destination);
        oscillator.start();
        setTimeout(() => { oscillator.stop(); ctx.close(); }, 150);
    };
});

Html5Qrcode.getCameras().then(cameras => {
    if (cameras && cameras.length) {
        html5QrCode.start(
            cameras[0].id,
            { fps: 10, qrbox: 250 },
            onScanSuccess
        );
    }
});
</script>
{% endblock %}