import { http, HttpResponse } from 'msw'
import { describe, expect, it } from 'vitest'
import { server } from '../test/server'
import { ApiError, api } from './api'

describe('api.postJson', () => {
  it('sends application/json and returns the parsed body', async () => {
    let sentContentType: string | null = null

    server.use(
      http.post('http://localhost/api/login', async ({ request }) => {
        sentContentType = request.headers.get('Content-Type')
        return HttpResponse.json({ id: 'u1', email: 'a@b.com' })
      }),
    )

    const result = await api.postJson<{ id: string; email: string }>('/login', {
      username: 'a@b.com',
      password: 'secret',
    })

    expect(sentContentType).toBe('application/json')
    expect(result).toEqual({ id: 'u1', email: 'a@b.com' })
  })

  it('throws ApiError on a non-2xx response', async () => {
    server.use(
      http.post('http://localhost/api/login', () =>
        HttpResponse.json({ message: 'bad creds' }, { status: 401 }),
      ),
    )

    const error = await api.postJson('/login', {}).catch((e: unknown) => e)

    expect(error).toBeInstanceOf(ApiError)
    expect((error as ApiError).status).toBe(401)
  })
})