/*
// Copyright (C) 2020-2022 Intel Corporation
//
// 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.
*/

#include "models/detection_model.h"

#include <fstream>
#include <stdexcept>
#include <string>
#include <vector>

#include "models/image_model.h"

DetectionModel::DetectionModel(const std::string& modelFileName,
                               float confidenceThreshold,
                               bool useAutoResize,
                               const std::vector<std::string>& labels,
                               const std::string& layout)
    : ImageModel(modelFileName, useAutoResize, layout),
      confidenceThreshold(confidenceThreshold),
      labels(labels) {}

std::vector<std::string> DetectionModel::loadLabels(const std::string& labelFilename) {
    std::vector<std::string> labelsList;

    /* Read labels (if any) */
    if (!labelFilename.empty()) {
        std::ifstream inputFile(labelFilename);
        if (!inputFile.is_open())
            throw std::runtime_error("Can't open the labels file: " + labelFilename);
        std::string label;
        while (std::getline(inputFile, label)) {
            labelsList.push_back(label);
        }
        if (labelsList.empty())
            throw std::logic_error("File is empty: " + labelFilename);
    }

    return labelsList;
}