import { api } from '../index';
import type { UploadResponse } from '../types';

/**
 * Build the multipart body for `/upload`. The backend expects exactly one file
 * per request under the field name `file` (anything else → FastAPI 422).
 */
export function buildUploadFormData(file: File): FormData {
  const fd = new FormData();
  fd.append('file', file);
  return fd;
}

export const uploadApi = api.injectEndpoints({
  endpoints: (build) => ({
    uploadTrack: build.mutation<UploadResponse, FormData>({
      query: (formData) => ({
        url: '/upload',
        method: 'POST',
        body: formData,
        formData: true,
      }),
      invalidatesTags: ['Track', 'Album', 'Artist', 'Storage'],
    }),
  }),
  overrideExisting: false,
});

export const { useUploadTrackMutation } = uploadApi;