# frozen_string_literal: true

class SnsReceiverJob < ApplicationJob
  queue_as :default

  # Receive hook
  def perform(track_type, m, _referrer)
    part = m["mail"]["headers"].find do |o|
      o["name"] == "X-CHASKIQ-PART-ID"
    end

    campaign = m["mail"]["headers"].find do |o|
      o["name"] === "X-CHASKIQ-CAMPAIGN-ID"
    end

    # handle conversation and exit
    handle_chat_message(track_type, m, part["value"]) if part.present?

    # handle campaign
    handle_campaign_message(track_type, m, _referrer) if campaign.present?

    unsubscribe_user(track_type, m)
  end

  def handle_campaign_message(track_type, m, _referrer)
    data = m[track_type]
    # message_id = parsed_message_id(m)

    campaign_id = m["mail"]["headers"].find do |o|
      o["name"] === "X-CHASKIQ-CAMPAIGN-ID"
    end.dig("value")

    user_id = m["mail"]["headers"].find do |o|
      o["name"] === "X-CHASKIQ-CAMPAIGN-TO"
    end.dig("value")

    campaign = Campaign.find_by(id: campaign_id)
    app_user = AppUser.find_by(id: user_id)

    return if campaign.blank? || app_user.blank?

    app_user.send("track_#{track_type}".to_sym,
                  host: data["ipAddress"],
                  trackable: campaign,
                  # message_id: message_id,
                  data: data)
  end

  def handle_chat_message(track_type, m, part_id)
    return unless track_type == "open"

    recipient = m["mail"]["headers"].find { |o| o["name"] == "Return-Path" }["value"]
    recipient_parts = URLcrypt.decode(recipient.split("@").first.split("+").last)
    app_id, conversation_id = recipient_parts.split("+")

    conversation = Conversation.find_by(id: conversation_id)
    return if conversation.blank?

    message = conversation.messages.find(part_id)
    return if message.blank?

    message.read! unless message.read?
  end

  private

  def unsubscribe_user(track_type, m)
    case track_type
    when "complaint"
      get_app_user_from_email(m, "complaint", "complainedRecipients")
      true
    when "bounce"
      return unless m["bounce"]["bounceType"] == "Permanent"

      get_app_user_from_email(m, "bounce", "bouncedRecipients")
    end
  end

  def get_app_user_from_email(message, message_type, type_kind)
    email = message.dig(message_type, type_kind).pluck("emailAddress")
    users = AppUser.where(email: email) if email.present?
    users.map(&:unsubscribe!)
  end

  def parsed_message_id(m)
    m["mail"]["headers"].find do |o|
      o["name"] == "Message-ID"
    end["value"].split("@").first.gsub("<", "")
  end

  def get_email_from_notification(m)
    m.dig("mail", "commonHeaders", "to")
  end
end
