/*
 *
 * Copyright 2015 gRPC authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

#ifndef GRPC_INTERNAL_COMPILER_PYTHON_GENERATOR_H
#define GRPC_INTERNAL_COMPILER_PYTHON_GENERATOR_H

#include <utility>
#include <vector>

#include "src/compiler/config.h"
#include "src/compiler/schema_interface.h"

namespace grpc_python_generator {

// Data pertaining to configuration of the generator with respect to anything
// that may be used internally at Google.
struct GeneratorConfiguration {
  GeneratorConfiguration();
  GeneratorConfiguration(std::string version);
  std::string grpc_package_root;
  // TODO(https://github.com/grpc/grpc/issues/8622): Drop this.
  std::string beta_package_root;
  // TODO(https://github.com/protocolbuffers/protobuf/issues/888): Drop this.
  std::string import_prefix;
  std::string grpc_tools_version;
  std::vector<std::string> prefixes_to_filter;
};

class PythonGrpcGenerator : public grpc::protobuf::compiler::CodeGenerator {
 public:
  PythonGrpcGenerator(const GeneratorConfiguration& config);
  ~PythonGrpcGenerator();

  uint64_t GetSupportedFeatures() const override {
    return FEATURE_PROTO3_OPTIONAL
#ifdef GRPC_PROTOBUF_EDITION_SUPPORT
           | FEATURE_SUPPORTS_EDITIONS
#endif
        ;
  }

#ifdef GRPC_PROTOBUF_EDITION_SUPPORT
  grpc::protobuf::Edition GetMinimumEdition() const override {
    return grpc::protobuf::Edition::EDITION_PROTO2;
  }
  grpc::protobuf::Edition GetMaximumEdition() const override {
    // TODO(yuanweiz): Remove when the protobuf is updated to a version
    //      that supports edition 2024.
#if !defined(GOOGLE_PROTOBUF_VERSION) || GOOGLE_PROTOBUF_VERSION >= 6032000
    return grpc::protobuf::Edition::EDITION_2024;
#else
    return grpc::protobuf::Edition::EDITION_2023;
#endif
  }
#endif

  bool Generate(const grpc::protobuf::FileDescriptor* file,
                const std::string& parameter,
                grpc::protobuf::compiler::GeneratorContext* context,
                std::string* error) const override;

 private:
  GeneratorConfiguration config_;
};

}  // namespace grpc_python_generator

#endif  // GRPC_INTERNAL_COMPILER_PYTHON_GENERATOR_H