{% extends "base.html" %}

{% block title %}{{ 'presenter_scan'|t }} - {{ session_name }} - NetEvents{% endblock %}

{% block content %}
<div class="presenter-scan-page">
    <div class="scan-header">
        <div class="session-info-header">
            <h1>{{ session_name }}</h1>
            <p class="session-meta">
                <span><i data-lucide="calendar"></i> {{ start_time|localized_date if start_time else '' }}</span>
                <span><i data-lucide="clock"></i> {{ start_time|localized_date('%H:%M') if start_time else '' }} - {{ end_time|localized_date('%H:%M') if end_time else '' }}</span>
                <span><i data-lucide="map-pin"></i> {{ location or 'TBD' }}</span>
            </p>
        </div>
        <a href="{{ url_for('presenter_dashboard') }}" class="btn btn-outline">
            <i data-lucide="arrow-left"></i> {{ 'back_to_dashboard'|t }}
        </a>
    </div>

    <div class="presenter-scan-container">
        <div class="scanner-section">
            <div class="scanner-box">
                <div id="qr-reader" class="qr-reader"></div>
                <div id="scan-result" class="scan-result hidden">
                    <div class="result-icon" id="result-icon"></div>
                    <div class="result-content">
                        <h2 id="result-title"></h2>
                        <p id="result-message"></p>
                    </div>
                    <button id="scan-again" class="btn btn-primary">
                        <i data-lucide="scan-line"></i> {{ 'scan_again'|t }}
                    </button>
                </div>
            </div>
        </div>

        <div class="stats-section">
            <div class="stat-card">
                <span class="stat-number" id="total-count">{{ attendees|length }}</span>
                <span class="stat-label">{{ 'total_registered'|t }}</span>
            </div>
            <div class="stat-card stat-card-success">
                <span class="stat-number" id="checked-in-count">{{ checked_in_count }}</span>
                <span class="stat-label">{{ 'checked_in'|t }}</span>
            </div>
            <div class="stat-card stat-card-warning">
                <span class="stat-number" id="remaining-count">{{ attendees|length - checked_in_count }}</span>
                <span class="stat-label">{{ 'remaining'|t }}</span>
            </div>
        </div>

        <div class="attendees-list-section">
            <h3>{{ 'attendees'|t }}</h3>
            <div class="attendees-scroll-list">
                <ul id="attendees-list" class="attendees-checkin-list">
                    {% for attendee in attendees %}
                    <li class="attendee-item {% if attendee.checked_in %}checked-in{% endif %}" data-id="{{ attendee.id }}" data-code="{{ attendee.attendee_code or '' }}">
                        <div class="attendee-info">
                            <span class="attendee-avatar">{{ attendee.first_name[0] }}{{ attendee.last_name[0] }}</span>
                            <div class="attendee-details">
                                <span class="attendee-name">{{ attendee.first_name }} {{ attendee.last_name }}</span>
                                <span class="attendee-email">{{ attendee.email }}</span>
                            </div>
                        </div>
                        <div class="attendee-status">
                            {% if attendee.checked_in %}
                            <span class="status-badge status-checked-in">
                                <i data-lucide="check-circle"></i> {{ 'checked_in'|t }}
                            </span>
                            {% else %}
                            <span class="status-badge status-pending">
                                <i data-lucide="clock"></i> {{ 'pending'|t }}
                            </span>
                            {% endif %}
                        </div>
                    </li>
                    {% else %}
                    <li class="empty-state-item">
                        <p>{{ 'no_attendees_registered'|t }}</p>
                    </li>
                    {% endfor %}
                </ul>
            </div>
        </div>
    </div>
</div>

<script src="https://unpkg.com/html5-qrcode@2.3.8/html5-qrcode.min.js"></script>
<script>
const breakoutSessionId = {{ breakout_session_id }};
const attendeesData = {{ attendees|tojson }};
let html5QrCode;
let scanning = true;

function updateStats() {
    const items = document.querySelectorAll('.attendee-item');
    const total = items.length;
    const checkedIn = document.querySelectorAll('.attendee-item.checked-in').length;
    document.getElementById('total-count').textContent = total;
    document.getElementById('checked-in-count').textContent = checkedIn;
    document.getElementById('remaining-count').textContent = total - checkedIn;
}

function markAttendeeCheckedIn(attendeeId) {
    const item = document.querySelector(`.attendee-item[data-id="${attendeeId}"]`);
    if (item) {
        item.classList.add('checked-in');
        const badge = item.querySelector('.status-badge');
        badge.className = 'status-badge status-checked-in';
        badge.innerHTML = '<i data-lucide="check-circle"></i> {{ "checked_in"|t }}';
        lucide.createIcons();

        // Move to top of list
        const list = document.getElementById('attendees-list');
        list.insertBefore(item, list.firstChild);
    }
    updateStats();
}

async function checkInAttendee(attendeeId) {
    try {
        const response = await fetch(`/presenter/session/${breakoutSessionId}/checkin/${attendeeId}`, {
            method: 'POST'
        });

        const data = await response.json();
        const resultDiv = document.getElementById('scan-result');
        const icon = document.getElementById('result-icon');
        const title = document.getElementById('result-title');
        const message = document.getElementById('result-message');

        icon.className = 'result-icon';
        icon.innerHTML = '';

        if (data.success) {
            document.getElementById('qr-reader').style.display = 'none';
            resultDiv.classList.remove('hidden');

            if (data.already_checked_in) {
                icon.classList.add('warning');
                icon.innerHTML = '<i data-lucide="clock"></i>';
                title.textContent = '{{ "already_checked_in"|t }}';
                message.textContent = `${data.attendee_name} {{ "was_already_checked_in"|t }}`;
            } else {
                icon.classList.add('success');
                icon.innerHTML = '<i data-lucide="check-circle"></i>';
                title.textContent = '{{ "checked_in"|t }}!';
                message.textContent = `{{ "success_checked_in"|t }} ${data.attendee_name}`;
                markAttendeeCheckedIn(attendeeId);
            }
        } else {
            icon.classList.add('error');
            icon.innerHTML = '<i data-lucide="x-circle"></i>';
            title.textContent = '{{ "error"|t }}';
            message.textContent = data.error || '{{ "failed_checkin"|t }}';
        }

        lucide.createIcons();
        scanning = false;
    } catch (error) {
        console.error('Check-in error:', error);
        showToast('{{ "error_checking_in"|t }}', 'error');
    }
}

function findAttendeeByCode(code) {
    return attendeesData.find(a => a.attendee_code && a.attendee_code.toUpperCase() === code.toUpperCase());
}

function onScanSuccess(decodedText) {
    if (!scanning) return;

    // Try NETEVENT format: NETEVENT:eventId:attendeeId
    const parts = decodedText.split(':');
    if (parts.length === 3 && parts[0] === 'NETEVENT') {
        const attendeeId = parseInt(parts[2]);
        if (!isNaN(attendeeId)) {
            const attendee = attendeesData.find(a => a.id === attendeeId);
            if (attendee) {
                checkInAttendee(attendeeId);
                return;
            }
        }
    }

    // Try plain 10-char attendee code
    const match = decodedText.match(/^[A-Z0-9]{10}$/i);
    if (match) {
        const code = match[0].toUpperCase();
        const attendee = findAttendeeByCode(code);
        if (attendee) {
            checkInAttendee(attendee.id);
        } else {
            showToast('{{ "attendee_not_found"|t }}', 'error');
        }
        return;
    }

    // Try legacy URL format: /organizer/event/XX/checkin/YY
    const urlMatch = decodedText.match(/\/checkin\/(\d+)/);
    if (urlMatch) {
        const attendeeId = parseInt(urlMatch[1]);
        const attendee = attendeesData.find(a => a.id === attendeeId);
        if (attendee) {
            checkInAttendee(attendeeId);
            return;
        }
    }

    // QR format not recognized
}

function startScanner() {
    html5QrCode = new Html5Qrcode("qr-reader");

    html5QrCode.start(
        { facingMode: "environment" },
        {
            fps: 10,
            qrbox: { width: 250, height: 250 }
        },
        onScanSuccess,
        (errorMessage) => {}
    ).catch(err => {
        console.error('Camera error:', err);
        showToast('{{ "camera_permission_error"|t }}', 'error');
    });
}

function resetScanner() {
    document.getElementById('qr-reader').style.display = 'block';
    document.getElementById('scan-result').classList.add('hidden');
    scanning = true;
}

document.getElementById('scan-again').addEventListener('click', resetScanner);
window.addEventListener('DOMContentLoaded', startScanner);
</script>
{% endblock %}