#pragma once

#include "envoy/config/common/mutation_rules/v3/mutation_rules.pb.h"

#include "envoy/formatter/substitution_formatter_base.h"

#include "envoy/http/header_evaluator.h"

#include "envoy/server/factory_context.h"

namespace Envoy {

namespace Http {

using ProtoHeaderMutatons =

    Protobuf::RepeatedPtrField<envoy::config::common::mutation_rules::v3::HeaderMutation>;

using ProtoHeaderValueOption = envoy::config::core::v3::HeaderValueOption;

class HeaderMutations : public HeaderEvaluator {

public:

  static absl::StatusOr<std::unique_ptr<HeaderMutations>>

  create(const ProtoHeaderMutatons& header_mutations,

         Server::Configuration::CommonFactoryContext& context,

         const Formatter::CommandParserPtrVector& command_parsers = {});

  // Http::HeaderEvaluator

  void evaluateHeaders(Http::HeaderMap& headers, const Formatter::Context& context,

                       const StreamInfo::StreamInfo& stream_info) const override;

private:

  HeaderMutations(const ProtoHeaderMutatons& header_mutations,

                  Server::Configuration::CommonFactoryContext& context,

                  const Formatter::CommandParserPtrVector& command_parsers,

                  absl::Status& creation_status);

  std::vector<std::unique_ptr<HeaderEvaluator>> header_mutations_;

};

} // namespace Http

} // namespace Envoy