docbrown/app/models/device.rb

class Device < ApplicationRecord
  belongs_to :consumer_app
  belongs_to :user

  IOS = "iOS".freeze
  ANDROID = "Android".freeze

  enum platform: { android: ANDROID, ios: IOS }

  validates :platform, inclusion: { in: platforms.keys }
  validates :token, presence: true
  validates :token, uniqueness: { scope: %i[user_id platform consumer_app_id] }

  def create_notification(title, body, payload)
    # There's no need to create notifications for Consumer Apps that aren't
    # operational. This happens when credentials aren't configured or delivery
    # errors have been raised (i.e. expired authentication certificates)
    return unless consumer_app.operational?

    if android?
      android_notification(title, body, payload)
    elsif ios?
      ios_notification(title, body, payload)
    end
  end

  private

  def ios_notification(title, body, payload)
    n = Rpush::Apns2::Notification.new
    n.device_token = token
    n.app = ConsumerApps::RpushAppQuery.call(
      app_bundle: consumer_app.app_bundle,
      platform: platform,
    )
    n.data = {
      aps: {
        alert: {
          title: Settings::Community.community_name,
          subtitle: title,
          body: body.truncate(512)
        },
        "thread-id": Settings::Community.community_name,
        sound: "default",
        # This key is required to modify the notification in the iOS app: https://developer.apple.com/documentation/usernotifications/modifying_content_in_newly_delivered_notifications#2942066
        "mutable-content": 1
      },
      data: payload
    }
    n.save!
  end

  def android_notification(title, body, payload)
    n = Rpush::Gcm::Notification.new
    n.app = ConsumerApps::RpushAppQuery.call(
      app_bundle: consumer_app.app_bundle,
      platform: platform,
    )
    n.registration_ids = [token]
    n.priority = "high"
    n.content_available = true
    n.notification = {
      title: title,
      body: body,
      sound: "default",
      click_action: ".presentation.home.HomeActivity"
    }
    n.data = { data: payload }
    n.save!
  end
end