/**
 * Copyright 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 MINDSPORE_PREDICT_GRAPH_UTIL_H
#define MINDSPORE_PREDICT_GRAPH_UTIL_H

#include <cstdlib>
#include <unordered_map>
#include <unordered_set>
#include <string>
#include <memory>
#include <vector>

#include "include/errorcode.h"
#include "schema/inner/model_generated.h"
#include "src/common/graph_util.h"

namespace mindspore {
namespace lite {
using STATUS = int;
enum InsertPlace { kBefore, kAfter };

using NodeIter = std::vector<std::unique_ptr<schema::CNodeT>>::iterator;

using OpDefCopyer = std::function<std::unique_ptr<schema::CNodeT>(schema::CNodeT *)>;

OpDefCopyer GetSimpleOpCopyer();

std::vector<size_t> GetInputNodeIdx(const schema::MetaGraphT &graphT, const size_t &nodeIdx, int inputIndexIdx = -1);

std::vector<size_t> GetInputNodeIdx(const schema::MetaGraphT &graphT, const schema::CNodeT &node,
                                    int inputIndexIdx = -1);

std::vector<size_t> GetOutputNodeIdx(const schema::MetaGraphT &graphT, const size_t &nodeIdx, int outputIndexIdx = -1);

std::vector<size_t> GetOutputNodeIdx(const schema::MetaGraphT &graphT, const schema::CNodeT &node,
                                     int outputIndexIdx = -1);

std::vector<size_t> GetLinkedPreIdx(const schema::MetaGraphT &graphT, const size_t &tensorIdx);

std::vector<size_t> GetLinkedPostIdx(const schema::MetaGraphT &graphT, const size_t &tensorIdx);

STATUS IsolateNode(schema::MetaGraphT *subGraph, schema::CNodeT *node);

STATUS IsolateOneWayNode(schema::MetaGraphT *graphT, size_t nodeIdx, bool removeTensor = true);

STATUS IsolateOneWayNode(schema::MetaGraphT *graphT, size_t subGraphIdx, size_t nodeIdx, bool removeTensor = true);

STATUS IsolateOneWayNode(schema::MetaGraphT *graphT, schema::CNodeT *node, bool removeTensor = true);

STATUS UpdateNodeIndex(schema::CNodeT *node, uint32_t deleteIdx);

STATUS RemoveTensor(schema::MetaGraphT *graphT, std::vector<uint32_t> toDeleteTensorIdxes, bool forceDelete = false);

STATUS AddTensor2Node(schema::MetaGraphT *graphT, uint32_t nodeIdx, std::unique_ptr<schema::TensorT> tensor,
                      InsertPlace place = kBefore);

STATUS ReplaceTensorOfNode(schema::MetaGraphT *graphT, uint32_t nodeIdx, uint32_t inTensorIdx,
                           std::unique_ptr<schema::TensorT> tensor);

NodeIter InsertNode(schema::MetaGraphT *graphT, uint32_t existNodeIdx, InsertPlace place, size_t inoutIndex,
                    std::unique_ptr<schema::CNodeT> toAddNode, STATUS *errorCode,
                    OpDefCopyer opDefCopyer = GetSimpleOpCopyer());

NodeIter InsertNode(schema::MetaGraphT *graphT, NodeIter existNodeIter, InsertPlace place, size_t inoutIndexIdx,
                    std::unique_ptr<schema::CNodeT> toAddNode, STATUS *errorCode,
                    OpDefCopyer opDefCopyer = GetSimpleOpCopyer());

NodeIter InsertNodeBefore(schema::MetaGraphT *graphT, NodeIter existNodeIter, size_t inputIndexIdx,
                          std::unique_ptr<schema::CNodeT> toAddNode, STATUS *errorCode, OpDefCopyer opDefCopyer);

NodeIter InsertNodeAfter(schema::MetaGraphT *graphT, NodeIter existNodeIter, size_t outputIndexIdx,
                         std::unique_ptr<schema::CNodeT> toAddNode, STATUS *errorCode, OpDefCopyer opDefCopyer);

STATUS ValidateFileStr(const std::string &modelFile, std::string fileType);
std::string GetModelName(const std::string &modelFile);
}  // namespace lite
}  // namespace mindspore

#endif  // MINDSPORE_PREDICT_GRAPH_UTIL_H