import http from "http";

/**
 * A minimal implementation of fetch().
 *
 * We don't use Axios or any other library to reduce the chance of conflict with
 * mocks that a library user may have set up in their own project. See
 * https://github.com/fwouts/react-screenshot-test/issues/178#issuecomment-621194050
 * for a concrete example of this happening.
 */
export function fetch(
  url: string,
  method = "GET",
  body?: any
): Promise<{
  status: number;
  body: Buffer;
}> {
  const requestData = body ? JSON.stringify(body) : "";
  return new Promise((resolve, reject) => {
    const request = http.request(
      url,
      {
        method,
        headers: {
          "Content-Type": "application/json",
          "Content-Length": requestData.length,
        },
      },
      (response) => {
        const responseData: Buffer[] = [];
        response.on("error", (error) => {
          reject(error);
        });
        response.on("data", (data) => {
          responseData.push(data);
        });
        response.on("end", () => {
          resolve({
            status: response.statusCode || 200,
            body: Buffer.concat(responseData),
          });
        });
      }
    );
    request.write(requestData);
    request.end();
  });
}