discourse/script/downsize_uploads.rb

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# frozen_string_literal: true
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require File.expand_path("../../config/environment", __FILE__)
# no less than 1 megapixel
max_image_pixels = [ARGV[0].to_i, 1_000_000].max
puts "", "Fixing all images dimensions in the database", ""
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count = 0
Upload
.where("LOWER(extension) IN ('jpg', 'jpeg', 'gif', 'png')")
.where("COALESCE(width, 0) = 0 OR COALESCE(height, 0) = 0 OR COALESCE(thumbnail_width, 0) = 0 OR COALESCE(thumbnail_height, 0) = 0")
.find_each do |upload|
count += 1
print "\r%8d".freeze % count
next unless source = upload.local? ? Discourse.store.path_for(upload) : "https:#{upload.url}"
w, h = FastImage.size(source)
ww, hh = ImageSizer.resize(w, h)
next if w == 0 || h == 0 || ww == 0 || hh == 0
upload.update!(
width: w,
height: h,
thumbnail_width: ww,
thumbnail_height: hh,
)
end
puts "", "Downsizing images to no more than #{max_image_pixels} pixels"
count = 0
Upload
.where("LOWER(extension) IN ('jpg', 'jpeg', 'gif', 'png')")
.where("width * height > ?", max_image_pixels)
.find_each do |upload|
count += 1
print "\r%8d".freeze % count
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next unless source = upload.local? ? Discourse.store.path_for(upload) : "https:#{upload.url}"
next unless size = (FastImage.size(source) rescue nil)
if size.reduce(:*) < max_image_pixels
ww, hh = ImageSizer.resize(*size)
upload.update!(
width: size[0],
height: size[1],
thumbnail_width: ww,
thumbnail_height: hh,
)
next
end
next unless path = upload.local? ? source : (Discourse.store.download(upload) rescue nil)&.path
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OptimizedImage.downsize(path, path, "#{max_image_pixels}@", filename: upload.original_filename)
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previous_short_url = upload.short_url
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sha1 = Upload.generate_digest(path)
w, h = FastImage.size(path)
ww, hh = ImageSizer.resize(w, h)
new_file = true
if existing_upload = Upload.find_by(sha1: sha1)
upload = existing_upload
new_file = false
end
upload.filesize = File.size(path)
upload.sha1 = sha1
upload.width = w
upload.height = h
upload.thumbnail_width = ww
upload.thumbnail_height = hh
next unless upload.save!
if new_file
next unless url = Discourse.store.store_upload(File.new(path), upload)
next unless upload.update!(url: url)
end
upload.posts.each do |post|
post.update!(raw: post.raw.gsub(previous_short_url, upload.short_url)) if new_file
Jobs.enqueue(:process_post, post_id: post.id, bypass_bump: true, cook: true)
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end
end
puts "", "Done"