import { describe, expect, it } from 'vitest';
import { MAX_BODY_BYTES } from './app.js';
import { flush, setup, T0, validBody } from './testing.js';

describe('GET /api/health', () => {
  it('отдаёт версию', async () => {
    const { app } = setup({ version: 'abc123' });
    const res = await app.request('/api/health');
    expect(await res.json()).toEqual({ ok: true, version: 'abc123' });
  });
});

describe('POST /api/lead', () => {
  it('201: сохраняет заявку с нормализованным телефоном, касаниями и user agent', async () => {
    const { db, post } = setup();
    const res = await post(validBody(), { 'user-agent': 'Mozilla/5.0 test' });

    expect(res.status).toBe(201);
    expect(await res.json()).toEqual({ ok: true, duplicate: false });
    const row = db.prepare('SELECT * FROM leads').get() as Record<string, unknown>;
    expect(row).toMatchObject({
      id: 1,
      created_at: T0.toISOString(),
      phone: '+375291234567',
      name: 'Аня',
      interest: 'subscription',
      comment: 'Под эспрессо',
      user_agent: 'Mozilla/5.0 test',
      tg_status: 'pending',
      tg_attempts: 0,
    });
    expect(JSON.parse(row.first_touch as string)).toMatchObject({ utm_source: 'instagram' });
    expect(JSON.parse(row.last_touch as string)).toMatchObject({ utm_source: 'yandex', submitPage: '/#form' });
  });

  it('номер заявки клиенту не отдаёт', async () => {
    const { post } = setup();
    const text = await (await post(validBody())).text();
    expect(text).toBe('{"ok":true,"duplicate":false}');
  });

  it('notifier получает id заявки уже после ответа', async () => {
    const { post, events } = setup();
    await post(validBody());
    expect(events).toEqual([]);
    await flush();
    expect(events).toEqual([{ kind: 'lead', leadId: 1 }]);
  });

  it('упавший notifier не ломает ответ', async () => {
    const { post, db } = setup({
      notifier: {
        leadSaved: () => Promise.reject(new Error('telegram down')),
      },
    });
    const res = await post(validBody());
    await flush();
    expect(res.status).toBe(201);
    expect(db.prepare('SELECT count(*) AS n FROM leads').get()).toEqual({ n: 1 });
  });

  it('400 validation: ошибки по полям, ничего не пишет', async () => {
    const { post, db, events } = setup();
    const res = await post(validBody({ name: ' ', phone: '+7 999 123-45-67' }));
    expect(res.status).toBe(400);
    const body = (await res.json()) as { fieldErrors: Record<string, string> };
    expect(body).toMatchObject({ ok: false, error: 'validation' });
    expect(Object.keys(body.fieldErrors).sort()).toEqual(['name', 'phone']);
    await flush();
    expect(events).toEqual([]);
    expect(db.prepare('SELECT count(*) AS n FROM leads').get()).toEqual({ n: 0 });
  });

  it('400 bad_request: битый JSON', async () => {
    const { post } = setup();
    const res = await post('{"name":');
    expect(res.status).toBe(400);
    expect(await res.json()).toEqual({ ok: false, error: 'bad_request' });
  });

  it('415: не JSON', async () => {
    const { post } = setup();
    const res = await post('name=Аня', { 'content-type': 'application/x-www-form-urlencoded' });
    expect(res.status).toBe(415);
    expect(await res.json()).toEqual({ ok: false, error: 'bad_request' });
  });

  it('JSON с charset принимается', async () => {
    const { post } = setup();
    const res = await post(validBody(), { 'content-type': 'application/json; charset=utf-8' });
    expect(res.status).toBe(201);
  });

  it('413: тело больше 16 КБ', async () => {
    const { post, db } = setup();
    const res = await post(validBody({ comment: 'а'.repeat(MAX_BODY_BYTES) }));
    expect(res.status).toBe(413);
    expect(await res.json()).toEqual({ ok: false, error: 'bad_request' });
    expect(db.prepare('SELECT count(*) AS n FROM leads').get()).toEqual({ n: 0 });
  });

  it('honeypot: 201 как на обычную заявку, ничего не пишет, notifier молчит', async () => {
    const { post, db, events } = setup();
    const res = await post(validBody({ company: 'ООО Спам' }));
    await flush();
    expect(res.status).toBe(201);
    expect(await res.json()).toEqual({ ok: true, duplicate: false });
    expect(db.prepare('SELECT count(*) AS n FROM leads').get()).toEqual({ n: 0 });
    expect(events).toEqual([]);
  });

  it('503 unavailable: приём на паузе (восстановление базы)', async () => {
    let paused = true;
    const { post, db } = setup({ isPaused: () => paused });
    const res = await post(validBody());
    expect(res.status).toBe(503);
    expect(await res.json()).toEqual({ ok: false, error: 'unavailable' });
    expect(db.prepare('SELECT count(*) AS n FROM leads').get()).toEqual({ n: 0 });

    paused = false;
    expect((await post(validBody())).status).toBe(201);
  });

  it('500 server: исключение при записи', async () => {
    const { post, db } = setup();
    db.close();
    const res = await post(validBody());
    expect(res.status).toBe(500);
    expect(await res.json()).toEqual({ ok: false, error: 'server' });
  });
});