#if defined(NO)
#  warning Detected Apple 'NO' macro definition, it can cause build conflicts. Please, include this header before any Apple headers.
#endif

post_install do |installer|
  installer.pods_project.targets.each do |target|
    target.build_configurations.each do |config|
      config.build_settings["IPHONEOS_DEPLOYMENT_TARGET"] = "13.0"
    end
  end
  # 插入这一句，解决OpenCV编译报错
  prefix_pch_path = 'Pods/Target Support Files/LPOpenCV/LPOpenCV-prefix.pch'
    if File.exist?(prefix_pch_path)
      content_to_add = <<-OPEN_CV_HEADER
// ↓ --- 解决OpenCV的问题：warning Detected Apple 'NO' macro definition, it can cause build conflicts. Please, include this header before any Apple headers.
#ifdef __cplusplus
#import <opencv2/opencv.hpp>
#import <opencv2/imgproc/types_c.h>
#import <opencv2/core.hpp>
#import <opencv2/features2d.hpp>
#import <opencv2/calib3d.hpp>
#import <opencv2/objdetect.hpp>
#import <opencv2/highgui.hpp>
#import <opencv2/imgproc.hpp>
#import <opencv2/objdetect/objdetect.hpp>
#endif
// ↑ ---
      OPEN_CV_HEADER

      File.open(prefix_pch_path, 'r ') do |file|
        old_content = file.read
        file.rewind
        file.puts content_to_add   old_content
      end
    end
end

def generate
        result = super

        unique_prefix_header_contents = file_accessors.map do |file_accessor|
          file_accessor.spec_consumer.prefix_header_contents
        end.compact.uniq

        unique_prefix_header_contents.each do |prefix_header_contents|
          result << prefix_header_contents
          result << "\n"
        end

        file_accessors.map(&:prefix_header).compact.uniq.each do |prefix_header|
          result << Pathname(prefix_header).read
        end

        result
      end

def generate
        result = ""

        unique_prefix_header_contents = file_accessors.map do |file_accessor|
          file_accessor.spec_consumer.prefix_header_contents
        end.compact.uniq

        unique_prefix_header_contents.each do |prefix_header_contents|
          result << prefix_header_contents
          result << "\n"
        end

        file_accessors.map(&:prefix_header).compact.uniq.each do |prefix_header|
          result << Pathname(prefix_header).read
        end
       
       result << super
       
        result
      end