{% extends "base.html" %}

{% block title %}Unit Detail - Seismo Fleet Manager{% endblock %}

{% block content %}
<div class="mb-6">
    <a href="/roster" class="text-seismo-orange hover:text-seismo-burgundy inline-flex items-center mb-4">
        <svg class="w-4 h-4 mr-1" fill="none" stroke="currentColor" viewBox="0 0 24 24">
            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M15 19l-7-7 7-7"></path>
        </svg>
        Back to Fleet Roster
    </a>
    <div class="flex justify-between items-center">
        <h1 class="text-3xl font-bold text-gray-900 dark:text-white" id="pageTitle">Loading...</h1>
        <div class="flex gap-3">
            <button id="editButton" onclick="enterEditMode()" class="px-4 py-2 bg-seismo-orange hover:bg-orange-600 text-white rounded-lg transition-colors flex items-center gap-2">
                <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11 5H6a2 2 0 00-2 2v11a2 2 0 002 2h11a2 2 0 002-2v-5m-1.414-9.414a2 2 0 112.828 2.828L11.828 15H9v-2.828l8.586-8.586z"></path>
                </svg>
                Edit Unit
            </button>
            <button onclick="deleteUnit()" class="px-4 py-2 bg-red-600 hover:bg-red-700 text-white rounded-lg transition-colors flex items-center gap-2">
                <svg class="w-5 h-5" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 7l-.867 12.142A2 2 0 0116.138 21H7.862a2 2 0 01-1.995-1.858L5 7m5 4v6m4-6v6m1-10V4a1 1 0 00-1-1h-4a1 1 0 00-1 1v3M4 7h16"></path>
                </svg>
                Delete Unit
            </button>
        </div>
    </div>
</div>

<!-- Loading state -->
<div id="loadingState" class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-12 text-center">
    <div class="animate-pulse">
        <div class="h-4 bg-gray-200 dark:bg-gray-700 rounded w-3/4 mx-auto mb-4"></div>
        <div class="h-4 bg-gray-200 dark:bg-gray-700 rounded w-1/2 mx-auto"></div>
    </div>
</div>

<!-- Main content (hidden until loaded) -->
<div id="mainContent" class="hidden space-y-6">
    <!-- Status Card -->
    <div class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
        <div class="flex justify-between items-start mb-6">
            <h2 class="text-xl font-semibold text-gray-900 dark:text-white">Status</h2>
            <div class="flex items-center space-x-2">
                <span id="statusIndicator" class="w-3 h-3 rounded-full"></span>
                <span id="statusText" class="font-semibold"></span>
            </div>
        </div>
        <div class="grid grid-cols-2 md:grid-cols-4 gap-4">
            <div>
                <span class="text-sm text-gray-500 dark:text-gray-400">Last Seen</span>
                <p id="lastSeen" class="font-medium text-gray-900 dark:text-white">--</p>
            </div>
            <div>
                <span class="text-sm text-gray-500 dark:text-gray-400">Age</span>
                <p id="age" class="font-medium text-gray-900 dark:text-white">--</p>
            </div>
            <div>
                <span class="text-sm text-gray-500 dark:text-gray-400">Deployed</span>
                <p id="deployedStatus" class="font-medium text-gray-900 dark:text-white">--</p>
            </div>
            <div>
                <span class="text-sm text-gray-500 dark:text-gray-400">Retired</span>
                <p id="retiredStatus" class="font-medium text-gray-900 dark:text-white">--</p>
            </div>
        </div>
    </div>

    <!-- Location Map -->
    <div id="mapCard" class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6 hidden">
        <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-4">Location</h2>
        <div id="unit-map" style="height: 400px; width: 100%;" class="rounded-lg mb-4"></div>
        <p id="locationText" class="text-sm text-gray-500 dark:text-gray-400"></p>
    </div>

    <!-- View Mode: Unit Information (Default) -->
    <div id="viewMode" class="rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
        <h2 class="text-xl font-semibold text-gray-900 dark:text-white mb-6">Unit Information</h2>

        <div class="space-y-6">
            <!-- Basic Info Grid -->
            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                <div>
                    <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Device Type</label>
                    <p id="viewDeviceType" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                </div>
                <div>
                    <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Unit Type</label>
                    <p id="viewUnitType" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                </div>
                <div>
                    <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Project ID</label>
                    <p id="viewProjectId" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                </div>
                <div>
                    <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Address</label>
                    <p id="viewAddress" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                </div>
                <div class="md:col-span-2">
                    <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Coordinates</label>
                    <p id="viewCoordinates" class="mt-1 text-gray-900 dark:text-white font-medium font-mono text-sm">--</p>
                </div>
            </div>

            <!-- Seismograph Info -->
            <div id="viewSeismographFields" class="border-t border-gray-200 dark:border-gray-700 pt-6">
                <h3 class="text-lg font-semibold text-gray-900 dark:text-white mb-4">Seismograph Information</h3>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                    <div>
                        <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Last Calibrated</label>
                        <p id="viewLastCalibrated" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                    </div>
                    <div>
                        <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Next Calibration Due</label>
                        <p id="viewNextCalibrationDue" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                    </div>
                    <div>
                        <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Deployed With Modem</label>
                        <p id="viewDeployedWithModemId" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                    </div>
                </div>
            </div>

            <!-- Modem Info -->
            <div id="viewModemFields" class="hidden border-t border-gray-200 dark:border-gray-700 pt-6">
                <h3 class="text-lg font-semibold text-gray-900 dark:text-white mb-4">Modem Information</h3>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                    <div>
                        <label class="text-sm font-medium text-gray-500 dark:text-gray-400">IP Address</label>
                        <p id="viewIpAddress" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                    </div>
                    <div>
                        <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Phone Number</label>
                        <p id="viewPhoneNumber" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                    </div>
                    <div>
                        <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Hardware Model</label>
                        <p id="viewHardwareModel" class="mt-1 text-gray-900 dark:text-white font-medium">--</p>
                    </div>
                </div>
            </div>

            <!-- Notes -->
            <div class="border-t border-gray-200 dark:border-gray-700 pt-6">
                <label class="text-sm font-medium text-gray-500 dark:text-gray-400">Notes</label>
                <p id="viewNote" class="mt-1 text-gray-900 dark:text-white whitespace-pre-wrap">--</p>
            </div>
        </div>
    </div>

    <!-- Edit Mode: Unit Information Form (Hidden by default) -->
    <div id="editMode" class="hidden rounded-xl shadow-lg bg-white dark:bg-slate-800 p-6">
        <div class="flex justify-between items-center mb-6">
            <h2 class="text-xl font-semibold text-gray-900 dark:text-white">Edit Unit Information</h2>
            <button onclick="cancelEdit()" class="text-gray-500 hover:text-gray-700 dark:text-gray-400 dark:hover:text-gray-200">
                <svg class="w-6 h-6" fill="none" stroke="currentColor" viewBox="0 0 24 24">
                    <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M6 18L18 6M6 6l12 12"></path>
                </svg>
            </button>
        </div>

        <form id="editForm" class="space-y-6">
            <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                <!-- Device Type -->
                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Device Type</label>
                    <select name="device_type" id="deviceType" onchange="toggleDetailFields()"
                        class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                        <option value="seismograph">Seismograph</option>
                        <option value="modem">Modem</option>
                    </select>
                </div>

                <!-- Unit Type -->
                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Unit Type</label>
                    <input type="text" name="unit_type" id="unitType"
                        class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                </div>

                <!-- Project ID -->
                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Project ID</label>
                    <input type="text" name="project_id" id="projectId"
                        class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                </div>

                <!-- Address -->
                <div>
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Address</label>
                    <input type="text" name="address" id="address" placeholder="123 Main St, City, State"
                        class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                </div>

                <!-- Coordinates -->
                <div class="md:col-span-2">
                    <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Coordinates</label>
                    <input type="text" name="coordinates" id="coordinates" placeholder="34.0522,-118.2437"
                        class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange font-mono">
                </div>
            </div>

            <!-- Seismograph Fields -->
            <div id="seismographFields" class="space-y-4 border-t border-gray-200 dark:border-gray-700 pt-4">
                <h3 class="text-lg font-semibold text-gray-900 dark:text-white">Seismograph Information</h3>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                    <div>
                        <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Last Calibrated</label>
                        <input type="date" name="last_calibrated" id="lastCalibrated"
                            class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Next Calibration Due</label>
                        <input type="date" name="next_calibration_due" id="nextCalibrationDue"
                            class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Deployed With Modem</label>
                        <input type="text" name="deployed_with_modem_id" id="deployedWithModemId" placeholder="Modem ID"
                            class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                    </div>
                </div>
            </div>

            <!-- Modem Fields -->
            <div id="modemFields" class="hidden space-y-4 border-t border-gray-200 dark:border-gray-700 pt-4">
                <h3 class="text-lg font-semibold text-gray-900 dark:text-white">Modem Information</h3>
                <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
                    <div>
                        <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">IP Address</label>
                        <input type="text" name="ip_address" id="ipAddress" placeholder="192.168.1.100"
                            class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Phone Number</label>
                        <input type="text" name="phone_number" id="phoneNumber" placeholder="+1-555-0123"
                            class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                    </div>
                    <div>
                        <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Hardware Model</label>
                        <input type="text" name="hardware_model" id="hardwareModel" placeholder="e.g., Raven XTV"
                            class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange">
                    </div>
                </div>
            </div>

            <!-- Checkboxes -->
            <div class="flex items-center gap-6 border-t border-gray-200 dark:border-gray-700 pt-4">
                <label class="flex items-center gap-2 cursor-pointer">
                    <input type="checkbox" name="deployed" id="deployed" value="true"
                        class="w-4 h-4 text-seismo-orange focus:ring-seismo-orange rounded">
                    <span class="text-sm text-gray-700 dark:text-gray-300">Deployed</span>
                </label>
                <label class="flex items-center gap-2 cursor-pointer">
                    <input type="checkbox" name="retired" id="retired" value="true"
                        class="w-4 h-4 text-seismo-orange focus:ring-seismo-orange rounded">
                    <span class="text-sm text-gray-700 dark:text-gray-300">Retired</span>
                </label>
            </div>

            <!-- Notes -->
            <div>
                <label class="block text-sm font-medium text-gray-700 dark:text-gray-300 mb-2">Notes</label>
                <textarea name="note" id="note" rows="4"
                    class="w-full px-4 py-2 rounded-lg border border-gray-300 dark:border-gray-600 bg-white dark:bg-slate-700 text-gray-900 dark:text-white focus:ring-2 focus:ring-seismo-orange"></textarea>
            </div>

            <!-- Save/Cancel Buttons -->
            <div class="flex gap-3">
                <button type="submit" class="flex-1 px-6 py-3 bg-seismo-orange hover:bg-orange-600 text-white rounded-lg font-medium transition-colors">
                    Save Changes
                </button>
                <button type="button" onclick="cancelEdit()" class="px-6 py-3 bg-gray-300 dark:bg-gray-600 hover:bg-gray-400 dark:hover:bg-gray-500 text-gray-700 dark:text-white rounded-lg font-medium transition-colors">
                    Cancel
                </button>
            </div>
        </form>
    </div>
</div>

<script>
const unitId = "{{ unit_id }}";
let currentUnit = null;
let currentSnapshot = null;
let unitMap = null;
let mapMarker = null;

// Load unit data on page load
async function loadUnitData() {
    try {
        // Fetch unit roster data
        const rosterResponse = await fetch(`/api/roster/${unitId}`);
        if (!rosterResponse.ok) {
            throw new Error('Unit not found');
        }
        currentUnit = await rosterResponse.json();

        // Fetch snapshot data for status info
        const snapshotResponse = await fetch('/api/status-snapshot');
        if (snapshotResponse.ok) {
            currentSnapshot = await snapshotResponse.json();
        }

        // Populate views
        populateViewMode();
        populateEditForm();

        // Hide loading, show content
        document.getElementById('loadingState').classList.add('hidden');
        document.getElementById('mainContent').classList.remove('hidden');

        // Initialize map after content is visible
        setTimeout(() => {
            initUnitMap();
        }, 100);
    } catch (error) {
        alert(`Error loading unit: ${error.message}`);
        window.location.href = '/roster';
    }
}

// Populate view mode (read-only display)
function populateViewMode() {
    // Update page title
    document.getElementById('pageTitle').textContent = `Unit ${currentUnit.id}`;

    // Get status info from snapshot
    let unitStatus = null;
    if (currentSnapshot && currentSnapshot.units) {
        unitStatus = currentSnapshot.units[unitId];
    }

    // Status card
    if (unitStatus) {
        const statusColors = {
            'OK': 'bg-green-500',
            'Pending': 'bg-yellow-500',
            'Missing': 'bg-red-500'
        };
        const statusTextColors = {
            'OK': 'text-green-600 dark:text-green-400',
            'Pending': 'text-yellow-600 dark:text-yellow-400',
            'Missing': 'text-red-600 dark:text-red-400'
        };

        document.getElementById('statusIndicator').className = `w-3 h-3 rounded-full ${statusColors[unitStatus.status] || 'bg-gray-400'}`;
        document.getElementById('statusText').className = `font-semibold ${statusTextColors[unitStatus.status] || 'text-gray-600'}`;
        document.getElementById('statusText').textContent = unitStatus.status || 'Unknown';
        document.getElementById('lastSeen').textContent = unitStatus.last || '--';
        document.getElementById('age').textContent = unitStatus.age || '--';
    } else {
        document.getElementById('statusIndicator').className = 'w-3 h-3 rounded-full bg-gray-400';
        document.getElementById('statusText').className = 'font-semibold text-gray-600 dark:text-gray-400';
        document.getElementById('statusText').textContent = 'No status data';
        document.getElementById('lastSeen').textContent = '--';
        document.getElementById('age').textContent = '--';
    }

    document.getElementById('deployedStatus').textContent = currentUnit.deployed ? 'Yes' : 'No';
    document.getElementById('retiredStatus').textContent = currentUnit.retired ? 'Yes' : 'No';

    // Basic info
    document.getElementById('viewDeviceType').textContent = currentUnit.device_type || '--';
    document.getElementById('viewUnitType').textContent = currentUnit.unit_type || '--';
    document.getElementById('viewProjectId').textContent = currentUnit.project_id || '--';
    document.getElementById('viewAddress').textContent = currentUnit.address || '--';
    document.getElementById('viewCoordinates').textContent = currentUnit.coordinates || '--';

    // Seismograph fields
    document.getElementById('viewLastCalibrated').textContent = currentUnit.last_calibrated || '--';
    document.getElementById('viewNextCalibrationDue').textContent = currentUnit.next_calibration_due || '--';
    document.getElementById('viewDeployedWithModemId').textContent = currentUnit.deployed_with_modem_id || '--';

    // Modem fields
    document.getElementById('viewIpAddress').textContent = currentUnit.ip_address || '--';
    document.getElementById('viewPhoneNumber').textContent = currentUnit.phone_number || '--';
    document.getElementById('viewHardwareModel').textContent = currentUnit.hardware_model || '--';

    // Notes
    document.getElementById('viewNote').textContent = currentUnit.note || '--';

    // Show/hide fields based on device type
    if (currentUnit.device_type === 'modem') {
        document.getElementById('viewSeismographFields').classList.add('hidden');
        document.getElementById('viewModemFields').classList.remove('hidden');
    } else {
        document.getElementById('viewSeismographFields').classList.remove('hidden');
        document.getElementById('viewModemFields').classList.add('hidden');
    }
}

// Populate edit form
function populateEditForm() {
    document.getElementById('deviceType').value = currentUnit.device_type || 'seismograph';
    document.getElementById('unitType').value = currentUnit.unit_type || '';
    document.getElementById('projectId').value = currentUnit.project_id || '';
    document.getElementById('address').value = currentUnit.address || '';
    document.getElementById('coordinates').value = currentUnit.coordinates || '';
    document.getElementById('deployed').checked = currentUnit.deployed;
    document.getElementById('retired').checked = currentUnit.retired;
    document.getElementById('note').value = currentUnit.note || '';

    // Seismograph fields
    document.getElementById('lastCalibrated').value = currentUnit.last_calibrated || '';
    document.getElementById('nextCalibrationDue').value = currentUnit.next_calibration_due || '';
    document.getElementById('deployedWithModemId').value = currentUnit.deployed_with_modem_id || '';

    // Modem fields
    document.getElementById('ipAddress').value = currentUnit.ip_address || '';
    document.getElementById('phoneNumber').value = currentUnit.phone_number || '';
    document.getElementById('hardwareModel').value = currentUnit.hardware_model || '';

    // Show/hide fields based on device type
    toggleDetailFields();
}

// Toggle device-specific fields
function toggleDetailFields() {
    const deviceType = document.getElementById('deviceType').value;
    const seismoFields = document.getElementById('seismographFields');
    const modemFields = document.getElementById('modemFields');

    if (deviceType === 'seismograph') {
        seismoFields.classList.remove('hidden');
        modemFields.classList.add('hidden');
    } else {
        seismoFields.classList.add('hidden');
        modemFields.classList.remove('hidden');
    }
}

// Enter edit mode
function enterEditMode() {
    document.getElementById('viewMode').classList.add('hidden');
    document.getElementById('editMode').classList.remove('hidden');
    document.getElementById('editButton').classList.add('hidden');
}

// Cancel edit mode
function cancelEdit() {
    document.getElementById('editMode').classList.add('hidden');
    document.getElementById('viewMode').classList.remove('hidden');
    document.getElementById('editButton').classList.remove('hidden');

    // Reset form to current values
    populateEditForm();
}

// Handle form submission
document.getElementById('editForm').addEventListener('submit', async function(e) {
    e.preventDefault();

    const formData = new FormData(this);

    try {
        const response = await fetch(`/api/roster/edit/${unitId}`, {
            method: 'POST',
            body: formData
        });

        if (response.ok) {
            alert('Unit updated successfully!');
            // Reload data and return to view mode
            await loadUnitData();
            cancelEdit();
        } else {
            const result = await response.json();
            alert(`Error: ${result.detail || 'Unknown error'}`);
        }
    } catch (error) {
        alert(`Error: ${error.message}`);
    }
});

// Delete unit
async function deleteUnit() {
    if (!confirm(`Are you sure you want to PERMANENTLY delete unit ${unitId}?\n\nThis action cannot be undone!`)) {
        return;
    }

    try {
        const response = await fetch(`/api/roster/${unitId}`, {
            method: 'DELETE'
        });

        if (response.ok) {
            alert('Unit deleted successfully');
            window.location.href = '/roster';
        } else {
            const result = await response.json();
            alert(`Error: ${result.detail || 'Unknown error'}`);
        }
    } catch (error) {
        alert(`Error: ${error.message}`);
    }
}

// Initialize unit location map (only called once)
function initUnitMap() {
    if (!currentUnit.coordinates) {
        document.getElementById('mapCard').classList.add('hidden');
        return;
    }

    const coords = parseLocation(currentUnit.coordinates);
    if (!coords) {
        document.getElementById('mapCard').classList.add('hidden');
        return;
    }

    const [lat, lon] = coords;

    // Show the map card
    document.getElementById('mapCard').classList.remove('hidden');

    // Only initialize map if it doesn't exist
    if (!unitMap) {
        // Initialize map
        unitMap = L.map('unit-map').setView([lat, lon], 13);

        // Add OpenStreetMap tiles
        L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
            attribution: '© <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors',
            maxZoom: 18
        }).addTo(unitMap);

        // Force map to update its size
        setTimeout(() => {
            unitMap.invalidateSize();
        }, 100);
    }

    // Update marker (can be called multiple times)
    updateMapMarker(lat, lon);

    // Update location text
    const locationParts = [];
    if (currentUnit.address) {
        locationParts.push(currentUnit.address);
    }
    locationParts.push(`Coordinates: ${lat.toFixed(6)}, ${lon.toFixed(6)}`);
    document.getElementById('locationText').textContent = locationParts.join(' • ');
}

// Update map marker with current status
function updateMapMarker(lat, lon) {
    // Remove old marker if it exists
    if (mapMarker) {
        mapMarker.remove();
    }

    // Get status color
    let statusColor = 'gray';
    let status = 'Unknown';
    if (currentSnapshot && currentSnapshot.units && currentSnapshot.units[unitId]) {
        const unitStatus = currentSnapshot.units[unitId];
        status = unitStatus.status || 'Unknown';
        statusColor = status === 'OK' ? 'green' : status === 'Pending' ? 'orange' : status === 'Missing' ? 'red' : 'gray';
    }

    // Add new marker
    mapMarker = L.circleMarker([lat, lon], {
        radius: 10,
        fillColor: statusColor,
        color: '#fff',
        weight: 3,
        opacity: 1,
        fillOpacity: 0.8
    }).addTo(unitMap).bindPopup(`
        <div class="p-2">
            <h3 class="font-bold text-lg">${currentUnit.id}</h3>
            <p class="text-sm">Status: <span style="color: ${statusColor}">${status}</span></p>
            <p class="text-sm">Type: ${currentUnit.device_type}</p>
        </div>
    `).openPopup();
}

function parseLocation(location) {
    if (!location) return null;

    // Try to parse as "lat,lon" format
    const parts = location.split(',').map(s => s.trim());
    if (parts.length === 2) {
        const lat = parseFloat(parts[0]);
        const lon = parseFloat(parts[1]);
        if (!isNaN(lat) && !isNaN(lon) && lat >= -90 && lat <= 90 && lon >= -180 && lon <= 180) {
            return [lat, lon];
        }
    }

    return null;
}

// Load data when page loads
loadUnitData();
</script>
{% endblock %}