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# frozen_string_literal: true
require 'booru/config'
# A module that sets model[mounted_as] (uploaded file name) à la Dragonfly
# and overrides CarrierWave URI generation to handle the format.
# Dragonfly:
# image_uid | 2016/01/01/filename.png
# CarrierWave:
# image | filename.png
# This is meant as a temporary extension. When migrating the data, do note that
# the date part (2016/01/01) does not always match model creation date — that
# needs to be accounted for to avoid losing those special snowflakes.
module CarrierWave
module DragonflyRecordCompatibility
# Override this method to specify server root prepended to relative paths.
def url_root
Booru::CONFIG.settings[:media_url_roots][mounted_as]
end
def store_dir
Booru::CONFIG.settings[:media_file_dirs][mounted_as]
end
def url
dragonfly_path = model[mounted_as]
"#{url_root}/#{dragonfly_path}"
end
def dirty_preview_url
# By default, CarrierWave returns a relative URL to "uploads/tmp/{upload}" for pending uploads
"data:#{file.content_type};base64,#{Base64.encode64(file.read)}" rescue nil
end
def filename
if file_changed?
dirty_filename
else
model[mounted_as]
end
end
def file_changed?
!@dirty_filename_saved && dirty_filename != model[mounted_as]
end
def dirty_filename
return model[mounted_as] unless file
if file.path.include?(store_dir)
file.path.split(store_dir).last.sub(/\A\//, '')
else
time = model[:created_at].present? ? model.created_at : Time.zone.now
dragonfly_extension = "#{time.year}/#{time.month}/#{time.day}"
filename = "#{time.usec}#{Digest::SHA256.hexdigest(file.path)[0..16]}.#{file.extension}"
filename = "#{dragonfly_extension}/#{filename}"
force_dirty_if_persisted! filename
filename
end
end
def force_dirty_if_persisted!(dirty)
if model.persisted? && model[mounted_as] != dirty
model.update_column mounted_as, dirty
@dirty_filename_saved = true
end
end
end
end
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