import { type Result, err, ok } from "../lib/result";

export type ApiError =
  | {
      readonly status: number;
      readonly type: "bad-response";
    }
  | {
      readonly error: unknown;
      readonly type: "request-failed";
    };

export async function request<T>(path: string, init?: RequestInit): Promise<Result<T, ApiError>> {
  try {
    const headers = new Headers(init?.headers);
    headers.set("content-type", "application/json");

    const response = await fetch(path, {
      ...init,
      headers,
    });

    if (!response.ok) {
      return err({ status: response.status, type: "bad-response" });
    }

    return ok((await response.json()) as T);
  } catch (error) {
    return err({ error, type: "request-failed" });
  }
}