const map = L.map('map').setView([43.17, 5.70], 13);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
  attribution: '© OSM contributors', maxZoom: 19
}).addTo(map);

const status = document.getElementById('status');
let trackLayer = null;

async function loadJobs() {
  const res = await fetch('/api/jobs');
  const jobs = await res.json();
  const sel = document.getElementById('job-select');
  jobs.forEach(j => {
    const opt = document.createElement('option');
    opt.value = j.id;
    opt.textContent = 'job_' + j.id;
    sel.appendChild(opt);
  });
  const urlJob = new URLSearchParams(window.location.search).get('job');
  const target = urlJob ? parseInt(urlJob) : (jobs.length > 0 ? jobs[0].id : null);
  if (target) {
    sel.value = target;
    loadJob(target);
  } else {
    status.textContent = 'Aucun job disponible';
  }
}

async function loadJob(jobId) {
  status.textContent = 'Chargement job_' + jobId + '...';
  const res = await fetch('/api/job/' + jobId + '/nav');
  const d = await res.json();
  if (trackLayer) map.removeLayer(trackLayer);
  if (!d.track || !d.track.x.length) {
    status.textContent = 'Pas de données track pour job_' + jobId;
    return;
  }
  const cx = d.track.x.reduce((a,b)=>a+b,0)/d.track.x.length;
  const cy = d.track.y.reduce((a,b)=>a+b,0)/d.track.y.length;
  const pts = d.track.x.map((x,i) => [43.17 + (d.track.y[i]-cy)*0.000009, 5.70 + (x-cx)*0.000009]);
  trackLayer = L.polyline(pts, { color: '#4ade80', weight: 2 }).addTo(map);
  map.fitBounds(trackLayer.getBounds());
  status.textContent = 'job_' + jobId + ' — ' + d.n_poses + ' poses | PLY: ' + (d.ply_ready ? 'prêt' : 'non dispo');
}

document.getElementById('job-select').addEventListener('change', e => {
  if (e.target.value) loadJob(parseInt(e.target.value));
});

loadJobs();