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#ifndef GRPCXX_IMPL_CODEGEN_METADATA_MAP_H
#define GRPCXX_IMPL_CODEGEN_METADATA_MAP_H

#include <grpc++/impl/codegen/slice.h>

namespace grpc {

class MetadataMap {
 public:
  MetadataMap() { memset(&arr_, 0, sizeof(arr_)); }

  ~MetadataMap() {
    g_core_codegen_interface->grpc_metadata_array_destroy(&arr_);
  }

  void FillMap() {
    for (size_t i = 0; i < arr_.count; i++) {
      // TODO(yangg) handle duplicates?
      map_.insert(std::pair<grpc::string_ref, grpc::string_ref>(
          StringRefFromSlice(&arr_.metadata[i].key),
          StringRefFromSlice(&arr_.metadata[i].value)));
    }
  }

  std::multimap<grpc::string_ref, grpc::string_ref> *map() { return &map_; }
  const std::multimap<grpc::string_ref, grpc::string_ref> *map() const {
    return &map_;
  }
  grpc_metadata_array *arr() { return &arr_; }

 private:
  grpc_metadata_array arr_;
  std::multimap<grpc::string_ref, grpc::string_ref> map_;
};

}  // namespace grpc

#endif  // GRPCXX_IMPL_CODEGEN_METADATA_MAP_H