MessageIntentHandler.swift

//
//  MessageIntentHandler.swift
//
//  Created by Roman Kyrylenko on 22/02/17.
//  Copyright © 2017 Yalantis. All rights reserved.
//  https://yalantis.com
//

class MessagesIntentHandler: NSObject, INSendMessageIntentHandling, NetworkClientInjectable {
  
  func resolveRecipients(forSendMessage intent: INSendMessageIntent, with completion: @escaping ([INPersonResolutionResult]) -> Void) {
    guard let recipients = intent.recipients else {
      completion([])
      
      return
    }
    
    let resolutionResults = recipients.map { INPersonResolutionResult.success(with: $0) }
    completion(resolutionResults)
  }
  
  func resolveContent(forSendMessage intent: INSendMessageIntent, with completion: @escaping (INStringResolutionResult) -> Void) {
    if let text = intent.content, !text.isEmpty {
      completion(INStringResolutionResult.success(with: text))
    } else {
      completion(INStringResolutionResult.needsValue())
    }
  }
  
  func confirm(sendMessage intent: INSendMessageIntent, completion: @escaping (INSendMessageIntentResponse) -> Void) {
    let userActivity = NSUserActivity(activityType: String(describing: INSendMessageIntent.self))
    let responseCode: INSendMessageIntentResponseCode
    
    if !NetworkReachability.isReachable {
      userActivity.userInfo = ["error": SiriIntentError.noInternetConnection]
      responseCode = .failureMessageServiceNotAvailable
    } else if !UserSession.hasAuthorizedSession() {
      userActivity.userInfo = ["error": SiriIntentError.notAuthorized]
      responseCode = .failureRequiringAppLaunch
    } else {
      responseCode = .success
    }
    let response = INSendMessageIntentResponse(code: responseCode, userActivity: userActivity)
    
    completion(response)
  }
  
  func handle(sendMessage intent: INSendMessageIntent, completion: @escaping (INSendMessageIntentResponse) -> Void) {
    MessageResolver.resolveSiriMessage(with: intent.content) { message in
      self.apiClient.send(message: message) { error in
        let responseCode: INSendMessageIntentResponseCode
        let userActivity = NSUserActivity(activityType: NSStringFromClass(INSendMessageIntent.self))
        
        if let error = error {
          userActivity.userInfo = ["error": error]
          responseCode = .failure
        } else {
          responseCode = .success
        }
        let response = INSendMessageIntentResponse(code: responseCode, userActivity: userActivity)
        
        completion(response)
      }
    }
  }
  
}