import request from 'supertest';
import { buildApp } from '../src/app';

const KEY = 'key-ada'; // seeded free-tier customer

describe('Zappier API', () => {
  it('rejects calls without an API key', async () => {
    const { app } = buildApp();
    const res = await request(app).get('/v1/status');
    expect(res.status).toBe(401);
  });

  it('GET /v1/status is free', async () => {
    const { app } = buildApp();
    const res = await request(app).get('/v1/status').set('x-api-key', KEY);
    expect(res.status).toBe(200);
    expect(res.body.status).toBe('ok');
    expect(res.body.quote.totalCents).toBe(0);
  });

  it('POST /v1/timestamp is idempotent by sha256', async () => {
    const { app } = buildApp();
    const a = await request(app)
      .post('/v1/timestamp')
      .set('x-api-key', KEY)
      .send({ data: 'abc' });
    expect(a.status).toBe(202);
    const b = await request(app)
      .post('/v1/timestamp')
      .set('x-api-key', KEY)
      .send({ data: 'abc' });
    expect(b.body.jobId).toBe(a.body.jobId);
    expect(b.body.existing).toBe(true);
    const look = await request(app)
      .get(`/v1/hashes/${a.body.sha256}`)
      .set('x-api-key', KEY);
    expect(look.status).toBe(200);
    expect(look.body.jobId).toBe(a.body.jobId);
    const receipt = await request(app)
      .get(`/v1/receipts/${a.body.jobId}`)
      .set('x-api-key', KEY);
    expect(receipt.status).toBe(200);
    expect(receipt.body.type).toBe('verae.retrieval-receipt');
  });

  it('POST /v1/add returns the sum and is free', async () => {
    const { app } = buildApp();
    const res = await request(app)
      .post('/v1/add')
      .set('x-api-key', KEY)
      .send({ number1: 2, number2: 3 });
    expect(res.status).toBe(200);
    expect(res.body.sum).toBe(5);
    expect(res.body.number1).toBe(2);
    expect(res.body.number2).toBe(3);
    expect(res.body.quote.totalCents).toBe(0);
  });

  it('POST /v1/add rejects missing fields', async () => {
    const { app } = buildApp();
    const res = await request(app).post('/v1/add').set('x-api-key', KEY).send({ number1: 1 });
    expect(res.status).toBe(400);
  });

  it('POST /v1/transform uppercases text at the multiplied fixed price', async () => {
    const { app } = buildApp();
    const res = await request(app)
      .post('/v1/transform')
      .set('x-api-key', KEY)
      .send({ text: 'hello' });
    expect(res.status).toBe(200);
    expect(res.body.output).toBe('HELLO');
    expect(res.body.quote.totalCents).toBe(4); // list 4 x free-tier multiplier 1
  });

  it('rejects a request that violates the OpenAPI schema with 400', async () => {
    const { app } = buildApp();
    const res = await request(app)
      .post('/v1/transform')
      .set('x-api-key', KEY)
      .send({ wrong: 1 });
    expect(res.status).toBe(400);
  });

  it('POST /v1/storage stores metadata plus attachments and quotes by size', async () => {
    const { app } = buildApp();
    const res = await request(app)
      .post('/v1/storage')
      .set('x-api-key', KEY)
      .field('metadata', JSON.stringify({ title: 'report' }))
      .attach('attachments', Buffer.alloc(1024 * 1024), 'one.bin')
      .attach('attachments', Buffer.alloc(1024 * 1024), 'two.bin');
    expect(res.status).toBe(200);
    expect(res.body.id).toBeTruthy();
    // metadata string is 20 bytes -> 1 KB; 2 MB attachments
    // list 10 + 1 * 1 + 2 * 50 = 111, free-tier multiplier 1
    expect(res.body.quote.totalCents).toBe(111);
  });

  it('POST /v1/storage with malformed metadata JSON returns 400 and charges nothing', async () => {
    const { app } = buildApp();
    const res = await request(app)
      .post('/v1/storage')
      .set('x-api-key', KEY)
      .field('metadata', '{not json');
    expect(res.status).toBe(400);
    expect(res.body.error).toMatch(/invalid metadata JSON/);
    const usageRes = await request(app).get('/v1/usage').set('x-api-key', KEY);
    expect(usageRes.status).toBe(200);
    expect(usageRes.body.totalCents).toBe(0);
  });

  it('GET /v1/storage lists the caller items newest first', async () => {
    const { app } = buildApp();
    await request(app)
      .post('/v1/storage')
      .set('x-api-key', KEY)
      .field('metadata', JSON.stringify({ title: 'a' }));
    await request(app)
      .post('/v1/storage')
      .set('x-api-key', KEY)
      .field('metadata', JSON.stringify({ title: 'b' }));
    const res = await request(app).get('/v1/storage').set('x-api-key', KEY);
    expect(res.status).toBe(200);
    expect(res.body.items).toHaveLength(2);
    expect(res.body.items[0].metadata.title).toBe('b');
  });

  it('GET /v1/usage returns the caller summary with monthly credit applied', async () => {
    const { app } = buildApp();
    await request(app)
      .post('/v1/transform')
      .set('x-api-key', KEY)
      .send({ text: 'x' });
    const res = await request(app).get('/v1/usage').set('x-api-key', KEY);
    expect(res.status).toBe(200);
    expect(res.body.customerId).toBe('cust_1');
    expect(res.body.calls).toBe(1);
    expect(res.body.totalCents).toBe(4);
    expect(res.body.includedCents).toBe(4); // free-tier credit (100) covers it
    expect(res.body.billableCents).toBe(0);
  });

  it('charges less for a business-tier customer', async () => {
    const { app } = buildApp();
    const res = await request(app)
      .post('/v1/transform')
      .set('x-api-key', 'key-linus')
      .send({ text: 'hello' });
    expect(res.body.quote.totalCents).toBe(1); // list 4 x business multiplier 0.25
  });
});