import { test } from 'node:test';
import assert from 'node:assert/strict';
import net from 'node:net';
import { decodePackets, encodePacket, parseStatus, runRcon } from '../src/servers/rcon.js';
import { buildMapCommands, sanitizeConsoleText } from '../src/servers/cs2Config.js';

/** Minimaler Source-RCON-Server für Tests. */
function fakeRconServer(password, onCommand) {
  const server = net.createServer((socket) => {
    let buffer = Buffer.alloc(0);
    socket.on('data', (chunk) => {
      buffer = Buffer.concat([buffer, chunk]);
      const { packets, rest } = decodePackets(buffer);
      buffer = rest;
      for (const p of packets) {
        if (p.type === 3) {
          socket.write(encodePacket(p.body === password ? p.id : -1, 2, ''));
        } else {
          socket.write(encodePacket(p.id, 0, onCommand(p.body)));
        }
      }
    });
  });
  return new Promise((resolve) => server.listen(0, '127.0.0.1', () => resolve(server)));
}

test('Paket-Kodierung ist umkehrbar', () => {
  const buf = Buffer.concat([encodePacket(7, 2, 'status'), encodePacket(8, 2, 'mp_warmup_end')]);
  const { packets, rest } = decodePackets(buf);
  assert.deepEqual(packets.map((p) => [p.id, p.body]), [[7, 'status'], [8, 'mp_warmup_end']]);
  assert.equal(rest.length, 0);
  const partial = decodePackets(buf.subarray(0, 10));
  assert.equal(partial.packets.length, 0);
});

test('RCON-Client authentifiziert und führt Befehle aus', async () => {
  const seen = [];
  const server = await fakeRconServer('geheim', (cmd) => {
    seen.push(cmd);
    return cmd === 'status' ? 'map     : de_mirage\nplayers  : 3 humans, 0 bots (10 max)' : '';
  });
  const { port } = server.address();
  try {
    const [out] = await runRcon({ host: '127.0.0.1', port, password: 'geheim' }, ['status', 'mp_warmup_end']);
    assert.deepEqual(parseStatus(out), { map: 'de_mirage', playerCount: 3 });
    assert.deepEqual(seen, ['status', 'mp_warmup_end']);
    await assert.rejects(runRcon({ host: '127.0.0.1', port, password: 'falsch' }, ['status']), /abgelehnt/);
  } finally {
    server.close();
  }
});

test('Konsolentexte können keine Befehle einschleusen', () => {
  assert.equal(sanitizeConsoleText('Team"; rcon_password x'), 'Team rcon_password x');
  const { beforeMapChange, afterMapChange } = buildMapCommands({
    match: { team_a_name: 'Alpha";quit', team_b_name: 'Bravo' },
    pool: { mode: 'wingman', gameType: 0, gameMode: 2 },
    seriesMap: { map: 'de_nuke', ctTeam: 'B' },
    secrets: { serverPassword: 'abc', tvPassword: 'def' },
    settings: { tvEnabled: true, tvDelaySeconds: 90, maxRoundsWingman: 16, maxRoundsCompetitive: 24, overtime: true, extraCommands: [] },
  });
  assert.ok(beforeMapChange.includes('game_mode 2'));
  assert.equal(beforeMapChange.at(-1), 'changelevel de_nuke');
  assert.ok(afterMapChange.includes('mp_teamname_1 "Bravo"'));
  assert.ok(afterMapChange.includes('mp_teamname_2 "Alphaquit"'));
  assert.ok(afterMapChange.includes('mp_maxrounds 16'));
});