import type { XClientOptions, XRequest, XResponse } from "../core/types";
import { getProviderAdapter } from "../providers/registry";
import { resolveConfig } from "../runtime/config";
import { postJSON, throwForBadStatus } from "../runtime/http";

export const generate = async (options: XClientOptions, request: XRequest): Promise<XResponse> => {
  const resolved = resolveConfig(request, options);
  const adapter = getProviderAdapter(resolved.provider);
  const providerRequest = adapter.toProviderRequest(request, resolved, false);
  const response = await postJSON(resolved.fetchImpl, providerRequest, adapter);

  await throwForBadStatus(response, adapter);

  const payload = await response.json();
  const normalized = adapter.fromProviderResponse(payload, resolved.provider);
  return { ...normalized, provider: resolved.provider, model: normalized.model || resolved.model };
};