import { describe, it, expect } from 'vitest';
import { server } from '../msw/server';
import { http, HttpResponse } from 'msw';
import { fetchAndEvaluatePosts } from '@/utils/fetchPosts';

const validPost = (overrides?: Partial<any>) => ({
  title: 'Hello',
  createdAt: 123,
  postContent: [
    { type: 'image', version: 1, id: 'img1', content: { image: 'img-data' } },
    { type: 'editor', version: 1, id: 'ed1', content: [{ text: 'Some text' }] },
  ],
  ...overrides,
});

describe('fetchAndEvaluatePosts', () => {
  it('returns isValid=false when structure invalid', async () => {
    server.use(http.get('/arbitrary/BLOG_POST/:user/:postId', () => HttpResponse.json({})));
    const res = await fetchAndEvaluatePosts({ user: 'u', postId: 'p', content: {} });
    expect(res.isValid).toBe(false);
  });

  it('maps fields and extracts description when editor present', async () => {
    server.use(
      http.get('/arbitrary/BLOG_POST/:user/:postId', () => HttpResponse.json(validPost())),
    );
    const content = { description: '' };
    const res = await fetchAndEvaluatePosts({ user: 'alice', postId: 'post1', content });
    expect(res.isValid).toBe(true);
    expect(res.user).toBe('alice');
    expect(res.id).toBe('post1');
    expect(res.title).toBe('Hello');
    expect(res.postImage).toBe('img-data');
    expect(res.description).toBe('Some text');
  });

  it('keeps existing description when provided', async () => {
    server.use(
      http.get('/arbitrary/BLOG_POST/:user/:postId', () => HttpResponse.json(validPost())),
    );
    const content = { description: 'keep me' };
    const res = await fetchAndEvaluatePosts({ user: 'alice', postId: 'post1', content });
    expect(res.description).toBe('keep me');
  });
});