import { validateBearerToken } from '$lib/oauth/bearer.js';
import { getProvider } from '$lib/providers/index.js';

function jsonResponse(body, status = 200) {
  return new Response(JSON.stringify(body), {
    status,
    headers: { 'Content-Type': 'application/json' }
  });
}

export async function GET({ params, request }) {
  const auth = await validateBearerToken(request, 'llm');
  if (!auth.valid) {
    return jsonResponse({
      error: {
        message: auth.error.message,
        type: 'invalid_request_error',
        param: null,
        code: auth.error.code
      }
    }, auth.status);
  }

  const modelId = params.model;

  let providerInfo;
  try {
    providerInfo = getProvider(modelId);
  } catch {
    return jsonResponse({
      error: {
        message: `The model '${modelId}' does not exist.`,
        type: 'invalid_request_error',
        param: null,
        code: 'model_not_found'
      }
    }, 404);
  }

  return jsonResponse({
    id: modelId,
    object: 'model',
    created: Math.floor(Date.now() / 1000),
    owned_by: providerInfo.id
  });
}