From 6adcaabed012589308aa118cac5a78a6b0c0a199 Mon Sep 17 00:00:00 2001
From: dleadbetter <derek@performantsoftware.com>
Date: Mon, 28 Oct 2024 11:42:44 -0400
Subject: [PATCH] Archnet #1216 - Updating "convert" service to use RGB
 colorspace; Adding "convert_images_by_colorspace" rake task

---
 app/services/images/convert.rb |  2 ++
 lib/tasks/iiif.rake            | 27 +++++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/app/services/images/convert.rb b/app/services/images/convert.rb
index 89326a2..d1cef79 100644
--- a/app/services/images/convert.rb
+++ b/app/services/images/convert.rb
@@ -18,6 +18,8 @@ def self.to_tiff(file)
       convert << 'jpeg'
       convert << '-alpha'
       convert << 'remove'
+      convert << '-colorspace'
+      convert << 'sRGB'
       convert << "ptif:#{output_path}"
       convert.call
 
diff --git a/lib/tasks/iiif.rake b/lib/tasks/iiif.rake
index 49ba7cb..3f04af5 100644
--- a/lib/tasks/iiif.rake
+++ b/lib/tasks/iiif.rake
@@ -34,6 +34,33 @@ namespace :iiif do
     end
   end
 
+  desc ''
+  task convert_images_by_colorspace: :environment do
+    # Parse the arguments
+    options = {}
+
+    opt_parser = OptionParser.new do |opts|
+      opts.banner = 'Usage: rake iiif:convert_images_by_colorspace [options]'
+      opts.on('-c', '--colorspace ARG', 'Image colorspace') { |colorspace| options[:colorspace] = colorspace }
+    end
+
+    args = opt_parser.order!(ARGV) {}
+    opt_parser.parse!(args)
+
+    if options[:colorspace].blank?
+      puts 'Please specify a colorspace...'
+      exit 0
+    end
+
+    query = Resource.where("(exif::json)->>'colorspace' = ?", options[:colorspace])
+
+    query.in_batches do |resources|
+      resources.pluck(:id).each do |resource_id|
+        ConvertImageJob.perform_later(resource_id)
+      end
+    end
+  end
+
   desc 'Converts the source images to pyramidal TIFFs for resources by the specified MIME type'
   task convert_images_by_type: :environment do
     # Parse the arguments