import { randomInt, randomUUID } from 'node:crypto';
import { eq } from 'drizzle-orm';
import { getGameDb, persist } from '@/lib/db/client';
import * as schema from '@/lib/db/schema';
import { loadAirportsGeoJson } from '@/lib/airports';
import { generatePackage, HUB_ICAO, JOB_LIFETIME_MS, mulberry32 } from '@/lib/game/seed';
import { tickNow } from '@/lib/sim/engine';

// TEST-ONLY hook (v0.7.0, adapted to packages in v0.12.0; reworked for wall-clock expiry in v0.65.0) —
// lets the e2e suite observe open-job expiry without waiting an hour of real time. Disabled unless
// FLIGHT_TEST_HOOKS=1, which is set in docker-compose.yml for the e2e instance only; every other
// deployment 404s here.
//
// POST /api/test/expire-package
//   body { packageId?: string }
//   - with packageId: ages that OPEN package's createdRealMs to HOOK_AGE_MS in the past so the next
//     tick (run immediately via tickNow) flips it to 'expired'; 404 if unknown/not open.
//   - without: creates a fresh open package at the home hub, already aged past its lifetime — visible
//     while open (the hub is always in the pool), expired by the time the caller polls /api/state.

const HOOK_AGE_MS = JOB_LIFETIME_MS + 60_000; // comfortably past the job lifetime

export async function POST(req: Request) {
  if (process.env.FLIGHT_TEST_HOOKS !== '1') {
    return Response.json({ error: 'test hooks disabled' }, { status: 404 });
  }

  let body: unknown = {};
  try {
    const text = await req.text();
    body = text ? JSON.parse(text) : {};
  } catch {
    return Response.json({ error: 'invalid JSON body' }, { status: 400 });
  }
  if (typeof body !== 'object' || body === null || Array.isArray(body)) {
    return Response.json({ error: 'body must be a JSON object' }, { status: 400 });
  }
  const packageId = (body as Record<string, unknown>).packageId;
  if (packageId !== undefined && typeof packageId !== 'string') {
    return Response.json({ error: 'packageId must be a string' }, { status: 400 });
  }

  try {
    const inst = await getGameDb();

    if (typeof packageId === 'string') {
      const rows = await inst.db.select().from(schema.packages).where(eq(schema.packages.id, packageId));
      const row = rows[0];
      if (!row || row.status !== 'open') {
        return Response.json({ error: 'package not found or not open' }, { status: 404 });
      }
      await inst.db.update(schema.packages).set({ createdRealMs: Date.now() - HOOK_AGE_MS }).where(eq(schema.packages.id, packageId));
      await persist(inst);
      // AFTER the mutation on purpose: tickNow runs a full tickOnce, so expireOpenPackages flips the
      // aged row to 'expired' within this same call — callers can poll /api/state immediately.
      await tickNow();
      const updated = (await inst.db.select().from(schema.packages).where(eq(schema.packages.id, packageId)))[0];
      return Response.json(updated ?? row);
    }

    const fc = await loadAirportsGeoJson();
    const airports = fc.features.map((f) => ({
      icao: f.properties.icao,
      name: f.properties.name,
      lat: f.properties.lat,
      lon: f.properties.lon,
    }));
    const rng = mulberry32(randomInt(0, 2 ** 31));
    // nowMs anchors createdSimTime/deadlineSimTime to the GAME clock (ISS-117) — only createdRealMs
    // is real time. special: null — the hook never rolls a special status (v0.37.0). Origin forced to
    // the home hub so the job is visible while open; already aged past its lifetime, it expires on
    // the tick below.
    const sim = (await inst.db.select().from(schema.simState))[0];
    if (!sim) throw new Error('sim_state row missing');
    const created = generatePackage({ id: randomUUID(), airports, rng, nowMs: sim.clockMs, originIcao: HUB_ICAO, special: null, createdRealMs: Date.now() - HOOK_AGE_MS });
    await inst.db.insert(schema.packages).values(created);
    await persist(inst);
    await tickNow();
    const updated = (await inst.db.select().from(schema.packages).where(eq(schema.packages.id, created.id)))[0];
    return Response.json(updated ?? created, { status: 201 });
  } catch (err) {
    console.error('test hook failed', err);
    return Response.json({ error: 'test hook failed' }, { status: 500 });
  }
}