import type { FastifyInstance } from 'fastify';
import { describe, expect, it } from 'vitest';
import type { AccessKeyView, Card, Group } from '@cardy/shared';
import { SUPERADMIN, multipart, testApp } from './helpers.js';

const adminHeaders = { 'remote-email': SUPERADMIN, 'x-cardy-admin': '1' };

async function setup() {
  const { app } = await testApp();
  const key = (
    await app.inject({ method: 'POST', url: `/admin/users/${SUPERADMIN}/keys`, headers: adminHeaders, payload: {} })
  ).json() as AccessKeyView;
  return { app, key: key.key, keyId: key.id };
}

function client(app: FastifyInstance, key: string) {
  return (method: 'GET' | 'POST' | 'PUT' | 'DELETE', url: string, parts?: Parameters<typeof multipart>[0]) => {
    const body = parts ? multipart(parts) : undefined;
    return app.inject({
      method,
      url,
      headers: { authorization: `Bearer ${key}`, ...body?.headers },
      ...(body ? { payload: body.payload } : {}),
    });
  };
}

const cardParts = (overrides: Record<string, string> = {}) =>
  Object.entries({ name: 'Shop', color: '#123456', code: '4600000000000', codeType: 'EAN13', ...overrides }).map(
    ([name, value]) => ({ name, value }),
  );

describe('client API', () => {
  it('authenticates by bearer key', async () => {
    const { app, key } = await setup();
    const ok = await client(app, key)('GET', '/auth');
    expect(ok.statusCode).toBe(200);
    expect(ok.json()).toMatchObject({ email: SUPERADMIN, group: { name: 'default' } });
    expect((await client(app, 'wrong')('GET', '/auth')).statusCode).toBe(401);
    expect((await app.inject({ url: '/cards' })).statusCode).toBe(401);
  });

  it('stops accepting a key right after it is deleted', async () => {
    const { app, key, keyId } = await setup();
    await app.inject({ method: 'DELETE', url: `/admin/users/${SUPERADMIN}/keys/${keyId}`, headers: adminHeaders });
    expect((await client(app, key)('GET', '/auth')).statusCode).toBe(401);
  });

  it('answers CORS preflight without a key', async () => {
    const { app } = await setup();
    const res = await app.inject({
      method: 'OPTIONS',
      url: '/cards',
      headers: { origin: 'https://localhost', 'access-control-request-method': 'GET', 'access-control-request-headers': 'authorization' },
    });
    expect(res.statusCode).toBeLessThan(300);
    expect(res.headers['access-control-allow-origin']).toBe('https://localhost');
  });

  it('creates, edits and deletes cards with logo and images', async () => {
    const { app, key } = await setup();
    const api = client(app, key);

    const createdRes = await api('POST', '/cards', [
      ...cardParts(),
      { name: 'logo', filename: 'logo.webp', mime: 'image/webp', data: Buffer.from('logo') },
    ]);
    expect(createdRes.statusCode).toBe(201);
    const created = createdRes.json() as Card;
    expect(created.id).toBeTruthy();
    expect(created.logo).not.toBeNull();
    expect(created.imagesVersion).toBe(1);

    expect((await api('POST', '/cards', cardParts({ codeType: 'BAD' }))).statusCode).toBe(400);

    const edited = (await api('PUT', `/cards/${created.id}`, [{ name: 'name', value: 'Shop 2' }])).json() as Card;
    expect(edited).toMatchObject({ name: 'Shop 2', code: '4600000000000', imagesVersion: 1 });

    const noLogo = (await api('PUT', `/cards/${created.id}`, [{ name: 'removeLogo', value: 'true' }])).json() as Card;
    expect(noLogo.logo).toBeNull();
    expect(noLogo.imagesVersion).toBe(2);

    const withImages = (
      await api('POST', `/cards/${created.id}/images`, [
        { name: 'file', filename: 'a.webp', mime: 'image/webp', data: Buffer.from('a') },
        { name: 'file', filename: 'b.webp', mime: 'image/webp', data: Buffer.from('b') },
      ])
    ).json() as Card;
    expect(withImages.images).toHaveLength(2);
    expect(withImages.imagesVersion).toBe(3);

    const image = await api('GET', `/cards/${created.id}/images/${withImages.images[1]!.id}`);
    expect(image.body).toBe('b');

    const afterRemove = (await api('DELETE', `/cards/${created.id}/images/${withImages.images[0]!.id}`)).json() as Card;
    expect(afterRemove.images.map((i) => i.id)).toEqual([withImages.images[1]!.id]);

    expect((await api('GET', '/cards')).json()).toHaveLength(1);
    expect((await api('DELETE', `/cards/${created.id}`)).statusCode).toBe(204);

    // Deleted cards are invisible to the client API but kept for admins.
    expect((await api('GET', '/cards')).json()).toEqual([]);
    expect((await api('GET', `/cards/${created.id}/images/${withImages.images[1]!.id}`)).statusCode).toBe(404);
    expect((await api('PUT', `/cards/${created.id}`, [{ name: 'name', value: 'x' }])).statusCode).toBe(404);
    expect((await api('DELETE', `/cards/${created.id}`)).statusCode).toBe(404);
    const adminCards = (await app.inject({ url: '/admin/cards', headers: adminHeaders })).json() as Card[];
    expect(adminCards[0]).toMatchObject({ id: created.id, deleted: true });
  });

  it('scopes cards to the key owner group', async () => {
    const { app, key } = await setup();
    const other = (
      await app.inject({ method: 'POST', url: '/admin/groups', headers: adminHeaders, payload: { name: 'Other' } })
    ).json() as Group;
    const otherHeaders = { ...adminHeaders, cookie: `cardy_group=${other.id}` };
    await app.inject({ method: 'POST', url: '/admin/users', headers: otherHeaders, payload: { email: 'o@example.com' } });
    const otherKey = (
      await app.inject({ method: 'POST', url: '/admin/users/o@example.com/keys', headers: otherHeaders, payload: {} })
    ).json() as AccessKeyView;

    const mine = (await client(app, key)('POST', '/cards', cardParts())).json() as Card;
    const theirs = client(app, otherKey.key);
    expect((await theirs('GET', '/cards')).json()).toEqual([]);
    expect((await theirs('DELETE', `/cards/${mine.id}`)).statusCode).toBe(404);
  });

  it('stores a multiline comment and keeps it on partial updates', async () => {
    const { app, key } = await setup();
    const api = client(app, key);
    const comment = 'Line one\nLine two\n\n  indented';

    const created = (await api('POST', '/cards', [...cardParts(), { name: 'comment', value: '  Line one\r\nLine two\r\n\r\n  indented\n' }])).json() as Card;
    expect(created.comment).toBe(comment);

    const renamed = (await api('PUT', `/cards/${created.id}`, [{ name: 'name', value: 'Renamed' }])).json() as Card;
    expect(renamed.comment).toBe(comment);

    const cleared = (await api('PUT', `/cards/${created.id}`, [{ name: 'comment', value: '' }])).json() as Card;
    expect(cleared.comment).toBe('');

    expect((await api('PUT', `/cards/${created.id}`, [{ name: 'comment', value: 'x'.repeat(2001) }])).statusCode).toBe(400);

    const withoutComment = (await api('POST', '/cards', cardParts())).json() as Card;
    expect(withoutComment.comment).toBe('');

    const patched = await app.inject({
      method: 'PATCH',
      url: `/admin/cards/${created.id}`,
      headers: adminHeaders,
      payload: { comment: 'From admin\nsecond line' },
    });
    expect((patched.json() as Card).comment).toBe('From admin\nsecond line');
  });

  it('parses comma-separated tags and keeps them on partial updates', async () => {
    const { app, key } = await setup();
    const api = client(app, key);

    const created = (await api('POST', '/cards', [...cardParts(), { name: 'tags', value: 'один,,, два' }])).json() as Card;
    expect(created.tags).toEqual(['один', 'два']);

    const renamed = (await api('PUT', `/cards/${created.id}`, [{ name: 'name', value: 'Renamed' }])).json() as Card;
    expect(renamed.tags).toEqual(['один', 'два']);

    const retagged = (await api('PUT', `/cards/${created.id}`, [{ name: 'tags', value: ' food , ,pharmacy ' }])).json() as Card;
    expect(retagged.tags).toEqual(['food', 'pharmacy']);

    const cleared = (await api('PUT', `/cards/${created.id}`, [{ name: 'tags', value: '' }])).json() as Card;
    expect(cleared.tags).toEqual([]);

    expect((await api('POST', '/cards', cardParts())).json()).toMatchObject({ tags: [] });

    const patched = await app.inject({
      method: 'PATCH',
      url: `/admin/cards/${created.id}`,
      headers: adminHeaders,
      payload: { tags: ['  a ', '', 'b, c'] },
    });
    expect((patched.json() as Card).tags).toEqual(['a', 'b', 'c']);
  });

  it('returns JSON 404 for unknown API routes', async () => {
    const { app, key } = await setup();
    const res = await client(app, key)('GET', '/nope');
    expect(res.statusCode).toBe(404);
    expect(res.json()).toEqual({ error: 'Not found' });
  });
});