Mandatory exiftools

[olegykz]

Project README states that exiftools is required for the functionality of changing PDF metadata, but turned out that it's always required if source HTML contains title tag:

gotenberg-ruby/lib/gotenberg/chromium/tools.rb

Line 32 in 1700050

meta(extract_metadata_from_body(compiler.body))

it might be inconvenient for the cases when consumer don't care about the metadata, and, additionaly might require additional setup for the environments like Heroku (additional buildpack, etc)

What if we make metadata extraction optional, something like

      def html index, extract_metadata: true
        compiler = Compiler.new(index)

        meta(extract_metadata_from_body(compiler.body)) if extract_metadata

        files << multipart_file(compiler.body, 'index.html', 'text/html')

        assets *compiler.assets

        @endpoint = '/forms/chromium/convert/html'

        self
      end

[Billiam]

Gotenberg now (as of 2024) allows setting the metadata directly when converting a document.

I monkey patched the engine I'm using with something like this to allow the metadata to be set by gotenberg instead of requiring exiftool on the client side:

module Gotenberg
  module Chromium
    def modify_metadata?
      false
    end

    def meta(elements)
      metadata.merge!(elements)
      properties['metadata'] = metadata.to_json

      self
    end
  end
end