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51 lines
1.5 KiB
51 lines
1.5 KiB
# frozen_string_literal: true
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class PreviewDocumentPageController < ActionController::API
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include ActiveStorage::SetCurrent
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FORMAT = Templates::ProcessDocument::FORMAT
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def show
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attachment_uuid = ApplicationRecord.signed_id_verifier.verified(params[:signed_uuid], purpose: :attachment)
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attachment = ActiveStorage::Attachment.find_by(uuid: attachment_uuid) if attachment_uuid
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return head :not_found unless attachment
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preview_image = attachment.preview_images.joins(:blob)
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.find_by(blob: { filename: ["#{params[:id]}.png", "#{params[:id]}.jpg"] })
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return redirect_to preview_image.url, allow_other_host: true if preview_image
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file_path =
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if attachment.service.name == :disk
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ActiveStorage::Blob.service.path_for(attachment.key)
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else
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find_or_create_document_tempfile_path(attachment)
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end
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preview_image =
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Templates::ProcessDocument.generate_pdf_preview_from_file(attachment, file_path, params[:id].to_i)
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redirect_to preview_image.url, allow_other_host: true
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end
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def find_or_create_document_tempfile_path(attachment)
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file_path = "#{Dir.tmpdir}/#{attachment.uuid}"
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File.open(file_path, File::RDWR | File::CREAT, 0o644) do |f|
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f.flock(File::LOCK_EX)
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# rubocop:disable Style/ZeroLengthPredicate
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if f.size.zero?
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f.binmode
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f.write(attachment.download)
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end
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# rubocop:enable Style/ZeroLengthPredicate
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end
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file_path
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end
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end
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