/**
 * Dev-only: boot GameScene, set a DESTINATION (a far star), and open the
 * MAP console's CURRENT SYSTEM tab so a headless screenshot shows:
 *   · the ROUTE EXIT GATE circled in orange (the gate the player should
 *     path out of the system from to reach the destination),
 *   · an orange line from the ship to that gate ("path out of the system").
 *
 *   node dev/server.mjs 8084
 *   node dev/shot-firefox.mjs \
 *     "http://127.0.0.1:8084/dev/exit-gate-shot.html" \
 *     "window.__EXIT_GATE ? window.__EXIT_GATE.ready : null" \
 *     EXIT_GATE.png 40000
 *
 * The report (top-left) lists console errors + the exit-gate state.
 */
import Phaser from '../js/vendor/phaser.js';
import { config } from '../js/config/Config.js';
import { ConfigLoader } from '../js/config/ConfigLoader.js';
import { createGameConfig } from '../js/config/GameConfig.js';
import { GameScene } from '../js/scenes/GameScene.js';

const data = await ConfigLoader.load();
config.init(data);

const errors = [];
const origErr = console.error.bind(console);
console.error = (...a) => { errors.push(a.map(String).join(' ')); origErr(...a); };
window.addEventListener('error', (e) => errors.push(String(e.message)));
window.addEventListener('unhandledrejection', (e) => errors.push(`rejection: ${e.reason}`));

const gameConfig = createGameConfig();
gameConfig.scene = [GameScene];
const game = new Phaser.Game(gameConfig);
window.game = game;

const report = document.createElement('pre');
report.id = 'report';
report.style.cssText = 'position:fixed;left:10px;top:10px;z-index:9999;max-width:70%;margin:0;padding:8px 12px;font:13px/1.5 monospace;color:#eaf6ff;background:rgba(6,20,16,0.92);border:1px solid #1b3a5a;white-space:pre-wrap;';
document.body.appendChild(report);
const setReport = (lines) => { report.textContent = (Array.isArray(lines) ? lines : [lines]).join('\n'); };
setReport('booting…');

const sleep = (ms) => new Promise((r) => setTimeout(r, ms));

async function waitScene() {
  for (let i = 0; i < 100; i++) {
    const s = game.scene.getScene('GameScene');
    if (s && s.ship && s.mapWindow) return s;
    await sleep(100);
  }
  throw new Error('GameScene never booted');
}

try {
  const s = await waitScene();
  await sleep(800);

  // Pick a FAR destination (a multi-hop route, so the exit gate is the
  // route's next gate in the CURRENT system).
  const sysId = s.systemRecord.id;
  const records = s.galaxy.records;
  const cur = records.find((r) => r.id === sysId);
  const others = records.filter((r) => r.id !== sysId);
  others.sort((a, b) => {
    const da = Math.hypot(a.x - cur.x, a.y - cur.y);
    const db = Math.hypot(b.x - cur.x, b.y - cur.y);
    return db - da;
  });
  const dest = others[2] ?? others[0];
  if (!dest) throw new Error('no destination candidate');

  const destContent = s.galaxy.contentOf(dest.id);
  const destPlanet = (destContent.planets ?? [])[0];
  const destObjId = destPlanet?.name ?? null;

  // Set the destination.
  s.setDestination(dest.id, destObjId);
  await sleep(400);

  // Discover the exit gate (the route's next gate in the CURRENT system)
  // so it's drawn on the chart.
  const exitGate = s.routeNextGate();
  if (exitGate) {
    let known = s.discovery.bySystem.get(sysId);
    if (!known) { known = new Set(); s.discovery.bySystem.set(sysId, known); }
    s.discovery.check(sysId, exitGate.x, exitGate.y, [{ id: exitGate.discoveryId, x: exitGate.x, y: exitGate.y, radius: 100 }]);
  }
  await sleep(300);

  // Open the MAP console's CURRENT SYSTEM tab (the default mode).
  s.mapWindow._switchMode('currentSystem');
  s.mapWindow.open();
  await sleep(1600);

  // Collect the state for the report.
  const chartSnap = s.mapChartSnapshot();
  const exitInfo = chartSnap?.routeExitGate;
  const exitObj = (chartSnap?.objects ?? []).find((o) => o?.id === exitInfo?.id);

  window.__EXIT_GATE = {
    ready: true,
    errors,
    destSystem: dest.id,
    destName: dest.name,
    exitGateId: exitInfo?.id,
    exitGateName: exitInfo?.name,
    exitGateDiscovered: exitObj?.discovered,
    exitGateX: exitInfo?.x,
    exitGateY: exitInfo?.y,
    shipX: chartSnap?.ship?.x,
    shipY: chartSnap?.ship?.y,
    destinationId: chartSnap?.destinationId,
  };

  const lines = [
    `DESTINATION: ${dest.name} (${dest.id})`,
    `EXIT GATE: ${exitInfo?.name ?? 'null'} (${exitInfo?.id ?? 'null'})`,
    `EXIT GATE DISCOVERED: ${exitObj?.discovered}`,
    `EXIT GATE POS: (${exitInfo?.x?.toFixed(0)}, ${exitInfo?.y?.toFixed(0)})`,
    `SHIP POS: (${chartSnap?.ship?.x?.toFixed(0)}, ${chartSnap?.ship?.y?.toFixed(0)})`,
    `DESTINATION IN CURRENT SYS: ${chartSnap?.destinationId ?? 'no (route exit gate shown)'}`,
    `ERRORS: ${errors.length ? errors.join(' | ') : 'none'}`,
  ];
  setReport(lines);
  console.log('EXIT GATE READY', JSON.stringify(window.__EXIT_GATE, null, 2));
} catch (e) {
  const lines = ['FATAL: ' + (e?.message ?? e), ...errors];
  setReport(lines);
  window.__EXIT_GATE = { ready: true, errors: [...errors, String(e?.message ?? e)] };
}