# debug_vision.rb
require "google/cloud/vision"

ENV["GOOGLE_APPLICATION_CREDENTIALS"] ||= ("D:/path_to/config/credentials/google_cloud_vision.json").to_s

Google::Cloud::Vision.configure do |config|
  config.credentials = ENV["GOOGLE_APPLICATION_CREDENTIALS"]
  puts "=== credentials: #{config.credentials}"
end

image_path = "D:/path_to/file.jpeg"

vision = Google::Cloud::Vision.image_annotator
puts "=== vision client initialized ==="


# Open the image file as an IO object
File.open(image_path, "rb") do |image_file|
  response = vision.safe_search_detection image: image_file
  safe_search = response.responses.first.safe_search_annotation

  puts "Adult: #{safe_search.adult}"
  puts "Violence: #{safe_search.violence}"
end

# config/initializers/google_cloud_vision.rb
require "google/cloud/vision"
# Set the environment variable for Google Cloud credentials
ENV["GOOGLE_APPLICATION_CREDENTIALS"] ||= Rails.root.join("config/credentials/google_cloud_vision.json").to_s

Google::Cloud::Vision.configure do |config|
  config.credentials = ENV["GOOGLE_APPLICATION_CREDENTIALS"]
end

# controllers/debug_controller.rb

class DebugController < ApplicationController
# Attempted all kinds of variations of including google/cloud/vision, no differences
# require "google/cloud/vision"
# include Google::Cloud::Vision
...
def moderate
    Rails.logger.debug "========== DebugController#moderate..."

    uploaded_file = params[:image]

    unless uploaded_file.present?
      flash[:alert] = "No file was uploaded!"
      render :image
    end

    image_path = uploaded_file.tempfile.path
    Rails.logger.debug "=== image_path: #{image_path&.inspect}"

    begin
      # Attempted to do config within controller, no difference
      # Google::Cloud::Vision.configure do |config|
      #   config.credentials = Rails.root.join("config/credentials/google_cloud_vision.json").to_s
      # end

      # Check if the environment variable is set
      credentials_env = ENV["GOOGLE_APPLICATION_CREDENTIALS"]
      unless credentials_env
        raise "Environment variable GOOGLE_APPLICATION_CREDENTIALS not set"
      end
      Rails.logger.debug "========== GOOGLE_APPLICATION_CREDENTIALS: #{credentials_env} =========="

      ####################################################
      # THE NEXT LINE CRASHES THE APP SERVER EVERY TIME #########
      vision_client = Google::Cloud::Vision.image_annotator
      
      # vision_client = VisionDebug.image_annotator # Attempt to override module, see more details
      Rails.logger.debug "=== vision client initialized ==="
      Rails.logger.debug "#{vision_client&.inspect}"

      response = vision_client.safe_search_detection image: image_path
      Rails.logger.debug "=== response: #{response&.inspect}"

      safe_search = response.responses.first.safe_search_annotation
      Rails.logger.debug "=== safe_search: #{safe_search&.inspect}"

      render json: {
        adult: safe_search.adult,
        violence: safe_search.violence,
      }
    rescue => e
      # This code block is never reached, the server just crashes
      error_message = "Google Cloud Vision API call failed: #{e.message}"
      Rails.logger.error error_message
      flash[:alert] = error_message
      render :image
    end
  end

module VisionDebug
  include Google::Cloud::Vision

  def self.image_annotator version: :v1, transport: :grpc, &block
    Rails.logger.debug "=== image_annotator, version: #{version}, transport: #{transport}"
    require "google/cloud/vision/#{version.to_s.downcase}"
    Rails.logger.debug "=== after require"

    package_name = Google::Cloud::Vision
                     .constants
                     .select { |sym| sym.to_s.downcase == version.to_s.downcase.tr("_", "") }
                     .first
    Rails.logger.debug "=== package_name: #{package_name}"


    service_module = Google::Cloud::Vision.const_get(package_name).const_get(:ImageAnnotator)
    Rails.logger.debug "=== service_module: #{service_module&.inspect}"

    service_module = service_module.const_get(:Rest) if transport == :rest
    Rails.logger.debug "=== service_module after rest check: #{service_module&.inspect}"

    ####################################################
    # THE NEXT LINE CRASHES THE APP SERVER EVERY TIME #########
    result = service_module.const_get(:Client).new(&block)

    # result = original_image_annotator(version, transport, &block)
    Rails.logger.debug "=== Result: #{result&.inspect}"
    result
  end
end