let map;
let markers = {};
let markerCount = 0;
let currentMapClickCoords = null;

// Initialize map and load markers
document.addEventListener('DOMContentLoaded', function() {
    initMap();
    loadMarkers();
    setupModal();
});

function setupModal() {
    const modal = document.getElementById('point-modal');
    const addBtn = document.getElementById('add-point-btn');
    const closeBtn = document.querySelector('.close');
    const form = document.getElementById('point-form');

    addBtn.onclick = function() {
        openPointModal(null);
    }

    closeBtn.onclick = function() {
        closePointModal();
    }

    window.onclick = function(event) {
        if (event.target === modal) {
            closePointModal();
        }
    }

    form.onsubmit = function(e) {
        e.preventDefault();
        submitPointForm();
    }
}

function openPointModal(coords) {
    const modal = document.getElementById('point-modal');
    const form = document.getElementById('point-form');
    const latInput = document.getElementById('point-latitude');
    const lngInput = document.getElementById('point-longitude');
    const nameInput = document.getElementById('point-name');
    const formInfo = document.getElementById('form-info');
    const modalTitle = document.getElementById('modal-title');

    form.reset();
    currentMapClickCoords = coords;

    if (coords) {
        latInput.value = coords.lat.toFixed(6);
        lngInput.value = coords.lng.toFixed(6);
        latInput.readOnly = true;
        lngInput.readOnly = true;
        modalTitle.textContent = 'Create Point';
        formInfo.textContent = '✓ Coordinates auto-filled from map click. Just add a name!';
        formInfo.classList.add('show');
        nameInput.focus();
    } else {
        latInput.value = '';
        lngInput.value = '';
        latInput.readOnly = false;
        lngInput.readOnly = false;
        modalTitle.textContent = 'Add New Point';
        formInfo.classList.remove('show');
        nameInput.focus();
    }

    modal.classList.add('show');
}

function closePointModal() {
    const modal = document.getElementById('point-modal');
    modal.classList.remove('show');
    currentMapClickCoords = null;
}

function submitPointForm() {
    const name = document.getElementById('point-name').value.trim();
    const latitude = parseFloat(document.getElementById('point-latitude').value);
    const longitude = parseFloat(document.getElementById('point-longitude').value);
    const open_24_hours = document.getElementById('point-24hours').checked ? 1 : 0;

    // Validate inputs
    if (!name) {
        showNotification('Please enter a name for the point', true);
        return;
    }

    if (isNaN(latitude) || latitude < -90 || latitude > 90) {
        showNotification('Please enter a valid latitude (-90 to 90)', true);
        return;
    }

    if (isNaN(longitude) || longitude < -180 || longitude > 180) {
        showNotification('Please enter a valid longitude (-180 to 180)', true);
        return;
    }

    addMarker(name, latitude, longitude, open_24_hours);
}

function initMap() {
    // Create map centered on a default location (San Francisco)
    map = L.map('map').setView([37.7749, -122.4194], 13);

    // Add OpenStreetMap tile layer
    L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
        attribution: '© OpenStreetMap contributors',
        maxZoom: 19
    }).addTo(map);

    // Handle map click to add marker with auto-filled coordinates
    map.on('click', function(e) {
        openPointModal({
            lat: e.latlng.lat,
            lng: e.latlng.lng
        });
    });
}

function addMarker(name, lat, lng, open_24_hours) {
    // Save to database
    fetch('api/save_point.php', {
        method: 'POST',
        headers: {
            'Content-Type': 'application/json',
        },
        body: JSON.stringify({
            name: name,
            latitude: lat,
            longitude: lng,
            open_24_hours: open_24_hours
        })
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            displayMarker(data.id, data.name, data.latitude, data.longitude, data.open_24_hours);
            updateMarkerCount();
            showNotification('✓ Point added successfully');
            closePointModal();
        } else {
            showNotification('Error adding point: ' + data.error, true);
        }
    })
    .catch(error => {
        console.error('Error:', error);
        showNotification('Error adding point', true);
    });
}

function displayMarker(id, name, lat, lng, open_24_hours) {
    const marker = L.marker([lat, lng]).addTo(map);

    const hoursText = open_24_hours ? '🕐 Open 24 Hours' : '🕐 Limited Hours';
    const popupContent = `
        <div class="marker-popup">
            <div class="marker-popup-name">${escapeHtml(name)}</div>
            <div class="marker-popup-hours">${hoursText}</div>
            <div class="marker-popup-info">
                <span>Lat: ${lat.toFixed(4)}</span><br>
                <span>Lng: ${lng.toFixed(4)}</span>
            </div>
            <button onclick="deleteMarker(${id})">Delete</button>
        </div>
    `;

    marker.bindPopup(popupContent);
    markers[id] = marker;
    markerCount++;
}

function loadMarkers() {
    fetch('api/get_points.php')
        .then(response => response.json())
        .then(data => {
            if (data.success && data.markers) {
                data.markers.forEach(marker => {
                    displayMarker(
                        marker.id,
                        marker.name,
                        marker.latitude,
                        marker.longitude,
                        marker.open_24_hours
                    );
                });
                updateMarkerCount();
            }
        })
        .catch(error => console.error('Error loading markers:', error));
}

function deleteMarker(id) {
    if (!confirm('Are you sure you want to delete this point?')) {
        return;
    }

    fetch('api/delete_point.php', {
        method: 'DELETE',
        headers: {
            'Content-Type': 'application/json',
        },
        body: JSON.stringify({ id: id })
    })
    .then(response => response.json())
    .then(data => {
        if (data.success) {
            if (markers[id]) {
                map.removeLayer(markers[id]);
                delete markers[id];
                markerCount--;
                updateMarkerCount();
                showNotification('✓ Point deleted');
            }
        } else {
            showNotification('Error deleting point: ' + data.error, true);
        }
    })
    .catch(error => {
        console.error('Error:', error);
        showNotification('Error deleting point', true);
    });
}

function updateMarkerCount() {
    const count = Object.keys(markers).length;
    const countElement = document.getElementById('marker-count');
    if (countElement) {
        countElement.textContent = count;
    }
}

function showNotification(message, isError = false) {
    const notification = document.createElement('div');
    notification.className = 'notification' + (isError ? ' error' : '');
    notification.textContent = message;
    document.body.appendChild(notification);

    setTimeout(() => {
        notification.remove();
    }, 3000);
}

function escapeHtml(text) {
    const map = {
        '&': '&amp;',
        '<': '&lt;',
        '>': '&gt;',
        '"': '&quot;',
        "'": '&#039;'
    };
    return text.replace(/[&<>"']/g, m => map[m]);
}