/**
 * Listet alle Fuellfarben des Plans mit Flaeche, Anzahl Polygone und den
 * naechstgelegenen Beschriftungen - Grundlage fuer die Farb-zu-Material-Zuordnung.
 *
 * Aufruf:  node tools/inspect-colors.mjs [minFlaeche]
 */
import fs from 'node:fs';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const __dirname = path.dirname(fileURLToPath(import.meta.url));
const data = JSON.parse(fs.readFileSync(path.join(__dirname, 'out', 'plan-raw.json'), 'utf8'));
const MIN = parseFloat(process.argv[2] ?? '0.15');

const centroid = (pts) => {
  let x = 0, z = 0;
  for (const p of pts) { x += p[0]; z += p[1]; }
  return [x / pts.length, z / pts.length];
};

const groups = new Map();
for (const s of data.shapes) {
  if (s.op !== 'f') continue;
  const g = groups.get(s.hex) ?? { hex: s.hex, n: 0, area: 0, big: [], circles: 0 };
  g.n++; g.area += s.area;
  if (s.circle) g.circles++;
  if (s.area >= MIN) g.big.push(s);
  groups.set(s.hex, g);
}

const rows = [...groups.values()].sort((a, b) => b.area - a.area);
for (const g of rows) {
  if (g.area < 0.2 && g.circles === 0) continue;
  const near = new Set();
  for (const s of g.big.slice(0, 6)) {
    const [cx, cz] = centroid(s.pts);
    const cands = data.labels
      .map((l) => ({ l, d: Math.hypot(l.x - cx, l.z - cz) }))
      .filter((c) => c.d < 3.5 && !/^-?\d\.\d{2}$/.test(c.l.text))
      .sort((a, b) => a.d - b.d)
      .slice(0, 3);
    for (const c of cands) near.add(c.l.text);
  }
  console.log(
    g.hex.padEnd(9),
    ('n=' + g.n).padEnd(7),
    (g.area.toFixed(1) + ' m2').padStart(9),
    ('gross=' + g.big.length).padEnd(10),
    ('kreise=' + g.circles).padEnd(11),
    [...near].slice(0, 7).join(' / '),
  );
}