class ParseLinkableContentJob < ActiveJob::Base
  queue_as :default

  def perform(annotation)
    content = ""
    document = annotation.document
    citing_docs = annotation.documents

    if annotation.content.present?
      content = annotation.content.gsub("<div>", "").gsub("</div>", "")

      contents = content.split(" citing ")
      contents.each_with_index do |content, i|
        linkable_content = nil
        if i.eql?(0)
          linkable_content = add_linkable_content(document.id, [content[i], clean_phil_rep(annotation)].reject(&:blank?).join(", "))
        else
          citing_docs.each do |citing_doc|
            old_content = contents[i]
            next if !old_content.include?(citing_doc.clean_reference_number)

            linkable_content = add_linkable_content(citing_doc.id, old_content)
          end
        end

        contents[i] = linkable_content
      end

      content = contents.join(" citing ")
    else
      contents = []
      doc_title = document.short_title || document.title
      doc_date_or_year = document.doc_date.present? ? document.doc_date.strftime("%B %d, %Y") : document.year
      doc_ref_num = document.clean_reference_number
      contents << add_linkable_content(document.id, [doc_title, doc_ref_num, doc_date_or_year, clean_phil_rep(annotation)].reject(&:blank?).join(", "))
  
      if citing_docs.present?
        citing_docs.each do |citing_doc|
          citing_doc_title = citing_doc.short_title || citing_doc.title
          citing_doc_date_or_year = citing_doc.doc_date.present? ? citing_doc.doc_date.strftime("%B %d, %Y") : citing_doc.year
          citing_doc_ref_num = citing_doc.clean_reference_number

          citing_content = [citing_doc_title, citing_doc_date_or_year, citing_doc_ref_num].join(", ")
          contents << ["citing", add_linkable_content(citing_doc, citing_content)].join(" ")
        end
      end
      content = contents.join(", ")
    end

    annotation.update_column(:content, content) if content.present?
    annotation.index!
  end

  private
    def add_linkable_content(document_id, content)
      document_route = Rails.application.routes.url_helpers.document_path(document_id)

      "<a href='#{document_route}'> #{content} </a>"
    end

    def clean_phil_rep(annotation)
      return if annotation.phil_rep.blank?

      annotation.phil_rep.gsub(/(PhilRep|Phil)\.?,?/i, "Phil")
    end
end