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document.addEventListener('DOMContentLoaded', () => {
// --- CONFIGURATION ---
const config = {
// IMPORTANT: Paste your full and correct Cloudflare Worker URL here
backendUrl: 'https://ar-city-explorer-backend.<your-subdomain>.workers.dev'
};
// --- GLOBAL STATE ---
let poisData = []; // This will hold all our landmark data from the backend
let arActive = false;
// --- DOM ELEMENT SELECTORS ---
const arToggle = document.getElementById('arToggle');
const arViewport = document.getElementById('arViewport');
const normalView = document.getElementById('normalView');
const aiAssistant = document.getElementById('aiAssistant');
const userInput = document.getElementById('userInput');
const sendBtn = document.getElementById('sendBtn');
const objectModal = document.getElementById('objectModal');
const objectTitle = document.getElementById('objectTitle');
const objectDescription = document.getElementById('objectDescription');
const objectImage = document.getElementById('objectImage');
const closeObjectModal = document.getElementById('closeObjectModal');
// --- CORE FUNCTIONS ---
function toggleARView(showAR) {
arActive = showAR;
if (arActive) {
normalView.classList.add('hidden');
arViewport.classList.remove('hidden');
arToggle.innerHTML = '<i class="fas fa-times mr-1"></i> Exit AR';
// Fetch data only if it hasn't been fetched yet
if (poisData.length === 0) {
fetchPoisAndCreateAREntities();
}
} else {
arViewport.classList.add('hidden');
normalView.classList.remove('hidden');
arToggle.innerHTML = '<i class="fas fa-vr-cardboard mr-1"></i> AR Mode';
}
}
function fetchPoisAndCreateAREntities() {
console.log('Fetching POIs from backend...');
fetch(`${config.backendUrl}/api/pois`)
.then(response => {
if (!response.ok) throw new Error(`Network error: ${response.statusText}`);
return response.json();
})
.then(pois => {
console.log('POIs received:', pois);
poisData = pois; // Store the data globally
const scene = document.querySelector('a-scene');
if (!scene) return console.error('A-Frame scene not found!');
pois.forEach(poi => {
const entity = document.createElement('a-entity');
entity.setAttribute('gps-new-entity-place', {
latitude: poi.latitude,
longitude: poi.longitude
});
const box = document.createElement('a-box');
box.setAttribute('material', 'color: red; opacity: 0.7;');
box.setAttribute('scale', '10 10 10');
box.setAttribute('position', '0 5 0');
box.setAttribute('data-poi-id', poi.id); // Set ID for click detection
entity.appendChild(box);
const text = document.createElement('a-text');
text.setAttribute('value', poi.name);
text.setAttribute('look-at', '[gps-new-camera]');
text.setAttribute('scale', '50 50 50');
text.setAttribute('position', '0 15 0');
entity.appendChild(text);
scene.appendChild(entity);
});
})
.catch(error => {
console.error('Failed to load POIs:', error);
alert('Could not load city data. Check your connection and the backend URL.');
toggleARView(false);
});
}
// --- MODAL AND UI FUNCTIONS ---
function showObjectInfo(poiId) {
const poi = poisData.find(p => p.id === poiId);
if (!poi) return;
objectTitle.textContent = poi.name;
objectDescription.textContent = poi.description || "No description available.";
objectImage.src = `https://via.placeholder.com/300x200?text=${encodeURIComponent(poi.name)}`;
objectModal.classList.remove('hidden');
}
function addUserMessage(message) {
const chatContainer = aiAssistant.querySelector('.flex-col');
const msg = `<div class="ai-message user-message"><p>${message}</p></div>`;
chatContainer.insertAdjacentHTML('beforeend', msg);
aiAssistant.scrollTop = aiAssistant.scrollHeight;
}
function addAIMessage(message) {
const chatContainer = aiAssistant.querySelector('.flex-col');
const msg = `<div class="ai-message assistant-message"><div class="font-bold text-indigo-800 mb-1">AR Guide</div><p>${message}</p></div>`;
chatContainer.insertAdjacentHTML('beforeend', msg);
aiAssistant.scrollTop = aiAssistant.scrollHeight;
}
function handleSearch() {
const searchTerm = userInput.value.trim();
if (!searchTerm) return;
addUserMessage(searchTerm);
userInput.value = '';
if (poisData.length === 0) {
addAIMessage("I'm still loading location data. Please try again in a moment.");
return;
}
const results = poisData.filter(poi =>
poi.name.toLowerCase().includes(searchTerm.toLowerCase()) ||
(poi.description && poi.description.toLowerCase().includes(searchTerm.toLowerCase()))
);
if (results.length > 0) {
let response = `I found ${results.length} result(s):<ul>`;
results.forEach(poi => { response += `<li class="mt-2 list-disc list-inside">${poi.name}</li>`; });
response += "</ul>";
addAIMessage(response);
} else {
addAIMessage(`Sorry, I couldn't find anything matching "${searchTerm}".`);
}
}
// --- EVENT LISTENERS ---
arToggle.addEventListener('click', () => toggleARView(!arActive));
document.querySelector('a-scene').addEventListener('click', (event) => {
if (event.target.hasAttribute('data-poi-id')) {
const poiId = parseInt(event.target.getAttribute('data-poi-id'), 10);
showObjectInfo(poiId);
}
});
closeObjectModal.addEventListener('click', () => objectModal.classList.add('hidden'));
sendBtn.addEventListener('click', handleSearch);
userInput.addEventListener('keypress', (e) => {
if (e.key === 'Enter') handleSearch();
});
// Initial fetch of data so the search bar works immediately
fetchPoisAndCreateAREntities();
}); |