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

export const schema = z.object({
  title: z.string().min(1),
  artist: z.string().min(1),
  album: z.string().optional(),
  durationMs: z.number().nonnegative().optional(),
});

export type InputType = z.infer<typeof schema>;
export type OutputType = {
  plain?: string;
  synced?: string;
  instrumental?: boolean;
};

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