import { _nullishCoalesce, _asyncNullishCoalesce, _optionalChain } from '@sentry/utils';
import { addTracingExtensions, getActiveSpan, spanToTraceHeader, getDynamicSamplingContextFromSpan, getClient, getRootSpan } from '@sentry/core';
import { dynamicSamplingContextToSentryBaggageHeader } from '@sentry/utils';
import { isBuild } from './utils/isBuild.js';
import { withTracedServerSideDataFetcher, getSpanFromRequest, withErrorInstrumentation } from './utils/wrapperUtils.js';

/**
 * Create a wrapped version of the user's exported `getInitialProps` function
 *
 * @param origGetInitialProps The user's `getInitialProps` function
 * @param parameterizedRoute The page's parameterized route
 * @returns A wrapped version of the function
 */
function wrapGetInitialPropsWithSentry(origGetInitialProps) {
  return new Proxy(origGetInitialProps, {
    apply: async (wrappingTarget, thisArg, args) => {
      if (isBuild()) {
        return wrappingTarget.apply(thisArg, args);
      }

      addTracingExtensions();

      const [context] = args;
      const { req, res } = context;

      const errorWrappedGetInitialProps = withErrorInstrumentation(wrappingTarget);
      const options = _optionalChain([getClient, 'call', _ => _(), 'optionalAccess', _2 => _2.getOptions, 'call', _3 => _3()]);

      // Generally we can assume that `req` and `res` are always defined on the server:
      // https://nextjs.org/docs/api-reference/data-fetching/get-initial-props#context-object
      // This does not seem to be the case in dev mode. Because we have no clean way of associating the the data fetcher
      // span with each other when there are no req or res objects, we simply do not trace them at all here.
      if (req && res && _optionalChain([options, 'optionalAccess', _4 => _4.instrumenter]) === 'sentry') {
        const tracedGetInitialProps = withTracedServerSideDataFetcher(errorWrappedGetInitialProps, req, res, {
          dataFetcherRouteName: context.pathname,
          requestedRouteName: context.pathname,
          dataFetchingMethodName: 'getInitialProps',
        });

        const initialProps

 = await _asyncNullishCoalesce((await tracedGetInitialProps.apply(thisArg, args)), async () => ( {})); // Next.js allows undefined to be returned from a getInitialPropsFunction.

        const activeSpan = getActiveSpan();
        const requestSpan = _nullishCoalesce(getSpanFromRequest(req), () => ( (activeSpan ? getRootSpan(activeSpan) : undefined)));

        if (requestSpan) {
          initialProps._sentryTraceData = spanToTraceHeader(requestSpan);

          const dynamicSamplingContext = getDynamicSamplingContextFromSpan(requestSpan);
          initialProps._sentryBaggage = dynamicSamplingContextToSentryBaggageHeader(dynamicSamplingContext);
        }

        return initialProps;
      } else {
        return errorWrappedGetInitialProps.apply(thisArg, args);
      }
    },
  });
}

/**
 * @deprecated Use `wrapGetInitialPropsWithSentry` instead.
 */
const withSentryServerSideGetInitialProps = wrapGetInitialPropsWithSentry;

export { withSentryServerSideGetInitialProps, wrapGetInitialPropsWithSentry };
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