/**
 * Copyright 2019-2020 Huawei Technologies Co., Ltd
 *
 * 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 INC_EXTERNAL_GE_GE_API_H_
#define INC_EXTERNAL_GE_GE_API_H_

#include <map>
#include <string>
#include <vector>

#include "ge/ge_api_error_codes.h"
#include "ge/ge_api_types.h"
#include "graph/graph.h"
#include "graph/tensor.h"

namespace ge {
typedef uint32_t (*pCallBackFunc)(uint32_t graph_id, const std::map<std::string, ge::Tensor> &params_list);

// Initialize GE
Status GEInitialize(const std::map<std::string, std::string> &options);

// Finalize GE, release all resources
Status GEFinalize();

class GE_FUNC_DEV_VISIBILITY GE_FUNC_HOST_VISIBILITY Session {
 public:
  explicit Session(const std::map<std::string, std::string> &options);

  ~Session();

  ///
  /// @ingroup client
  /// @brief add a graph with a specific graphId
  /// @param [in] graphId graph id
  /// @return Status result of function
  ///
  Status AddGraph(uint32_t graphId, const Graph &graph);

  ///
  /// @ingroup client
  /// @brief add a graph with a specific graphId and graphOptions
  /// @param [in] graphId graph id
  /// @param [in] graph the graph
  /// @param [in] options graph options
  /// @return Status result of function
  ///
  Status AddGraph(uint32_t graphId, const Graph &graph, const std::map<std::string, std::string> &options);

  ///
  /// @ingroup ge_graph
  /// @brief remove a graph of the session with specific session id
  /// @param [in] graphId graph id
  /// @return Status result of function
  ///
  Status RemoveGraph(uint32_t graphId);

  ///
  /// @ingroup ge_graph
  /// @brief run a graph of the session with specific session id
  /// @param [in] graphId graph id
  /// @param [in] inputs input data
  /// @param [out] outputs output data
  /// @return Status result of function
  ///
  Status RunGraph(uint32_t graphId, const std::vector<Tensor> &inputs, std::vector<Tensor> &outputs);

  ///
  /// @ingroup ge_graph
  /// @brief build graph in the session with specific session id
  /// @param [in] graphId: graph id
  /// @param [in] inputs: input data
  /// @return Status result of function
  ///
  Status BuildGraph(uint32_t graphId, const std::vector<InputTensorInfo> &inputs);

  ///
  /// @ingroup ge_graph
  /// @brief run graph in the session with specific session id asynchronously
  /// @param [in] graphId: graph id
  /// @param [in] inputs: input data
  /// @param [out] callback: callback while runing graph has been finished.
  ///                        The callback function will not be checked.
  ///                        Please ensure that the implementation of the function is trusted.
  /// @return Status result of function
  ///
  Status RunGraphAsync(uint32_t graphId, const std::vector<ge::InputTensorInfo> &inputs, RunAsyncCallback callback);

  ///
  /// @ingroup ge_graph
  /// @brief get variables in the session with specific session id
  /// @param [in] var_names: variable names
  /// @param [out] var_values: variable values
  /// @return Status result of function
  ///
  Status GetVariables(const std::vector<std::string> &var_names, std::vector<Tensor> &var_values);

  ///
  /// @ingroup ge_graph
  /// @brief register callback func with specific summary or checkpoint by users
  /// @param [in] key: func key
  /// @param [in] callback: callback  specific summary or checkpoint.
  ///                       The callback function will not be checked.
  ///                       Please ensure that the implementation of the function is trusted.
  /// @return Status result of function
  ///
  Status RegisterCallBackFunc(const std::string &key, const pCallBackFunc &callback);

  bool IsGraphNeedRebuild(uint32_t graphId);

 private:
  uint64_t sessionId_;
};
}  // namespace ge

#endif  // INC_EXTERNAL_GE_GE_API_H_
