import { z } from "zod";
import superjson from "superjson";

export const schema = z.object({
  playlistUrl: z.string().min(1),
});

export type InputType = z.infer<typeof schema>;
export type SpotifyPlaylistTrack = {
  id: string;
  uri: string;
  title: string;
  artist: string;
  album: string;
  durationMs: number;
  imageUrl?: string;
  externalUrl?: string;
  trackNumber?: number;
  discNumber?: number;
  isrc?: string;
  isLocal: boolean;
};

export type OutputType = {
  id: string;
  name: string;
  description?: string;
  imageUrl?: string;
  owner?: string;
  externalUrl?: string;
  total: number;
  tracks: SpotifyPlaylistTrack[];
};

export async function postSpotifyPlaylist(body: InputType): Promise<OutputType> {
  const validated = schema.parse(body);
  const response = await fetch("/_api/spotify-playlist", {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: superjson.stringify(validated),
  });
  if (!response.ok) {
    const parsed = superjson.parse<{ error: string }>(await response.text());
    throw new Error(parsed.error);
  }
  return superjson.parse<OutputType>(await response.text());
}