// Copyright (c) 2020 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 <chrono>
#include <iomanip>
#include <iostream>
#include <ostream>
#include <stdlib.h>
#include <vector>

#include <algorithm>
#include <cstring>
#include <fstream>
#include <numeric>

#include "opencv2/core.hpp"
#include "opencv2/imgcodecs.hpp"
#include "opencv2/imgproc.hpp"

namespace PaddleOCR {

struct OCRPredictResult {
  std::vector<std::vector<int>> box;
  std::string text;
  float score = -1.0;
  float cls_score;
  int cls_label = -1;
};

class Utility {
public:
  static std::vector<std::string> ReadDict(const std::string &path);

  static void VisualizeBboxes(const cv::Mat &srcimg,
                              const std::vector<OCRPredictResult> &ocr_result,
                              const std::string &save_path);

  template <class ForwardIterator>
  inline static size_t argmax(ForwardIterator first, ForwardIterator last) {
    return std::distance(first, std::max_element(first, last));
  }

  static void GetAllFiles(const char *dir_name,
                          std::vector<std::string> &all_inputs);

  static cv::Mat GetRotateCropImage(const cv::Mat &srcimage,
                                    std::vector<std::vector<int>> box);

  static std::vector<int> argsort(const std::vector<float> &array);

  static std::string basename(const std::string &filename);

  static bool PathExists(const std::string &path);

  static void print_result(const std::vector<OCRPredictResult> &ocr_result);
};

} // namespace PaddleOCR