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use axum::{
  body::{boxed, Body, BoxBody},
  http,
  http::{HeaderValue, Response},
  response::IntoResponse,
};

/// Responder for a GraphQL response.
///
/// This contains a batch response, but since regular responses are a type of
/// batch response it works for both.
pub struct GraphQLResponse(pub async_graphql::BatchResponse);

impl From<async_graphql::Response> for GraphQLResponse {
  fn from(resp: async_graphql::Response) -> Self {
      Self(resp.into())
  }
}

impl From<async_graphql::BatchResponse> for GraphQLResponse {
  fn from(resp: async_graphql::BatchResponse) -> Self {
      Self(resp)
  }
}

impl IntoResponse for GraphQLResponse {
  fn into_response(self) -> Response<BoxBody> {
      let body: Body = serde_json::to_string(&self.0).unwrap().into();
      let mut resp = Response::new(boxed(body));
      resp.headers_mut().insert(
          http::header::CONTENT_TYPE,
          HeaderValue::from_static("application/json"),
      );
      if self.0.is_ok() {
          if let Some(cache_control) = self.0.cache_control().value() {
              if let Ok(value) = HeaderValue::from_str(&cache_control) {
                  resp.headers_mut()
                      .insert(http::header::CACHE_CONTROL, value);
              }
          }
      }

      resp.headers_mut().extend(self.0.http_headers());
      resp
  }
}