import fs from 'node:fs/promises';
import os from 'node:os';
import path from 'node:path';
import { eq } from 'drizzle-orm';
import { afterAll, beforeAll, describe, expect, it } from 'vitest';
import * as schema from '@/lib/db/schema';
import { getGameDb } from '@/lib/db/client';
import { POST } from './route';

let dir: string;

beforeAll(async () => {
  // Same pattern as app/api/state/route.test.ts: point the DB singleton at a
  // throwaway file (fresh module registry per test file → fresh singleton).
  dir = await fs.mkdtemp(path.join(os.tmpdir(), 'flight-accept-api-'));
  process.env.FLIGHT_DB_PATH = path.join(dir, 'accept.db');
});

afterAll(async () => {
  delete process.env.FLIGHT_DB_PATH;
  await fs.rm(dir, { recursive: true, force: true });
});

const post = (id: string) => POST(new Request(`http://localhost/api/contracts/${id}/accept`), { params: Promise.resolve({ id }) });

describe('POST /api/contracts/:id/accept', () => {
  it('returns the full state snapshot with the contract accepted', async () => {
    const { db } = await getGameDb();
    const open = (await db.select().from(schema.contracts)).find((c) => c.status === 'open')!;

    const res = await post(open.id);
    expect(res.status).toBe(200);
    expect(res.headers.get('content-type')).toContain('application/json');

    // Response convention: the FULL snapshot, same shape as GET /api/state.
    const body = (await res.json()) as {
      account: { cash: number };
      simState: { clockMs: number; timeScale: number; paused: boolean };
      planes: Array<Record<string, unknown>>;
      contracts: Array<{ id: string; status: string }>;
    };
    // v0.10.0: the snapshot also carries the static market reference data.
    expect(Object.keys(body).sort()).toEqual([
      'account',
      'catalog',
      'contracts',
      'fuelPricePerL',
      'planes',
      'sellFraction',
      'simState',
    ]);
    expect(body.contracts.find((c) => c.id === open.id)?.status).toBe('accepted');

    // Persisted, not just in the response.
    const row = (await db.select().from(schema.contracts).where(eq(schema.contracts.id, open.id)))[0];
    expect(row.status).toBe('accepted');
  });

  it('rejects a non-open contract with 409', async () => {
    const { db } = await getGameDb();
    // Deterministic regardless of which contract the first test accepted.
    await db.update(schema.contracts).set({ status: 'completed' }).where(eq(schema.contracts.id, 'contract-2'));

    const res = await post('contract-2');
    expect(res.status).toBe(409);
    expect(((await res.json()) as { error: string }).error).toMatch(/completed/);
  });

  it('rejects an unknown id with 404', async () => {
    const res = await post('nope');
    expect(res.status).toBe(404);
    expect(((await res.json()) as { error: string }).error).toMatch(/not found/);
  });
});