# Copyright (C) 2012-2024 Zammad Foundation, https://zammad-foundation.org/

class Sequencer::Unit::Import::Freshdesk::Conversation::Mapping < Sequencer::Unit::Base
  include ::Sequencer::Unit::Import::Common::Mapping::Mixin::ProvideMapped

  uses :resource, :id_map

  # Since the imports rely on a fresh Zammad installation, we
  #   can require the default article types and senders to be present.
  def source_map # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/PerceivedComplexity
    @source_map ||= {
      0  => ::Ticket::Article::Type.select(:id).find_by(name: 'email')&.id, # Reply
      1  => ::Ticket::Article::Type.select(:id).find_by(name: 'email')&.id, # Email
      2  => ::Ticket::Article::Type.select(:id).find_by(name: 'web')&.id, # Note
      3  => ::Ticket::Article::Type.select(:id).find_by(name: 'phone')&.id, # Phone
      4  => ::Ticket::Article::Type.select(:id).find_by(name: 'note')&.id, # UNKNOWN!
      5  => ::Ticket::Article::Type.select(:id).find_by(name: 'twitter status')&.id, # Created from tweets
      6  => ::Ticket::Article::Type.select(:id).find_by(name: 'web')&.id, # Created from survey feedback
      7  => ::Ticket::Article::Type.select(:id).find_by(name: 'facebook feed post')&.id, # Created from Facebook post
      8  => ::Ticket::Article::Type.select(:id).find_by(name: 'email')&.id, # Created from Forwarded Email
      9  => ::Ticket::Article::Type.select(:id).find_by(name: 'note')&.id, # Created from Phone
      10 => ::Ticket::Article::Type.select(:id).find_by(name: 'note')&.id, # Created from Mobihelp
      11 => ::Ticket::Article::Type.select(:id).find_by(name: 'note')&.id, # E-Commerce
    }.freeze
  end

  def incoming_map
    @incoming_map ||= {
      true  => ::Ticket::Article::Sender.select(:id).find_by(name: 'Customer')&.id,
      false => ::Ticket::Article::Sender.select(:id).find_by(name: 'Agent')&.id,
    }.freeze
  end

  def process
    provide_mapped do
      {
        from:          resource['from_email'],
        to:            resource['to_emails']&.join(', '),
        cc:            resource['cc_emails']&.join(', '),
        ticket_id:     ticket_id,
        body:          resource['body'],
        content_type:  'text/html',
        internal:      resource['private'].present?,
        message_id:    resource['id'],
        updated_by_id: user_id,
        created_by_id: user_id,
        sender_id:     incoming_map[ resource['incoming'] ],
        type_id:       source_map[ resource['source'] ] || default_type_id,
        created_at:    resource['created_at'],
        updated_at:    resource['updated_at'],
      }
    end
  end

  private

  def ticket_id
    id_map['Ticket'][resource['ticket_id']]
  end

  def user_id
    id_map['User'][resource['user_id']] || 1
  end

  def default_type_id
    @default_type_id ||= ::Ticket::Article::Type.select(:id).find_by(name: 'note')&.id
  end
end