// Copyright (c) 2022 PaddlePaddle Authors. All Rights Reserved.
//
// 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.
#pragma once

#include <cstring>
#include <iostream>
#include <memory>
#include <string>
#include <vector>

#include "fastdeploy/runtime/backends/backend.h"
#include "fastdeploy/core/fd_tensor.h"
#include "dnn/hb_dnn.h"

namespace fastdeploy {
class HorizonBackend : public BaseBackend {
 public:
    HorizonBackend() = default;
    ~HorizonBackend();

    // Horizon Backend implementation.
    bool Init(const RuntimeOption& runtime_option);


    int NumInputs() const override {
        return static_cast<int>(inputs_desc_.size());
    }

    int NumOutputs() const override {
        return static_cast<int>(outputs_desc_.size());
    }
    
    TensorInfo GetInputInfo(int index) override;
    TensorInfo GetOutputInfo(int index) override;
    std::vector<TensorInfo> GetInputInfos() override;
    std::vector<TensorInfo> GetOutputInfos() override;
    bool Infer(std::vector<FDTensor>& inputs, std::vector<FDTensor>* outputs,
                bool copy_to_fd = true) override;

 private:
    hbPackedDNNHandle_t packed_dnn_handle_;
    hbDNNHandle_t dnn_handle_;
    hbDNNTensorProperties *input_properties_ = nullptr;
    hbDNNTensorProperties *output_properties_ = nullptr;
    hbDNNTensor *input_mems_;
    hbDNNTensor *output_mems_;

    bool infer_init_ = false;
    std::vector<TensorInfo> inputs_desc_;
    std::vector<TensorInfo> outputs_desc_;
    bool GetModelInputOutputInfos();
    bool LoadModel(const char *model);

    static FDDataType HorizonTensorTypeToFDDataType(int32_t type);
    static hbDNNDataType FDDataTypeToHorizonTensorType(FDDataType type);
};
}  // namespace fastdeploy