Can't access model object data outside the alamofire request scope while populating api data on badoo/Chatto chat text - ios

Question

Previously I successfully access model objects anywhere in the class but while populating data on badoo/chatto text view I am stuck.
I am integrating chat message api into badoo chat view
Basically, the issue is alamofire response is not getting outside of the scope.
Did I try with compilation handler but no luck? Is there any way to resolve this issue?
Thanks in advance .
Here is code snippet :
import Foundation
import Chatto
import ChattoAdditions
import SwiftyJSON
import Alamofire
class DemoChatMessageFactory {
public static var chats = [ChatModel]()
class func makeMessage(_ uid:String) -> DemoTextMessageModel{
print("uid makeMessage : \(uid)")
return self.makeMessageData(uid, isIncoming:false)
}
class func makeMessageData(_ uid: String,isIncoming:Bool) -> DemoTextMessageModel {
if isIncoming == true{
return self.makeTextFinalMessage(uid, isIncoming:isIncoming)
} else {
return self.makeTextFinalMessage(uid, isIncoming: isIncoming)
}
}
public class func makeTextMessage(_ uid: String, isIncoming: Bool,text:String) -> DemoTextMessageModel {
let messageModel = self.makeMessageModel(uid, isIncoming: isIncoming,
type: TextMessageModel<MessageModel>.chatItemType)
let textMessageModel = DemoTextMessageModel(messageModel:messageModel,
text: text)
return textMessageModel
}
public class func makeTextFinalMessage(_ uid: String, isIncoming: Bool) -> DemoTextMessageModel {
var text = String()
var uidInt = Int(uid)
print("string uid 121 \(uid)")
print("print is Incomming data or not 1: \(isIncoming)")
print("uid count :\(uid.count)")
let urlString = "[My message Api]"
Alamofire.request(urlString, method: .get).validate().responseJSON {
(response) -> Void in
if let value = response.data {
do {
let json = try JSON(data: value)
if let dictionnary = json.dictionaryObject {
if let messageArray = dictionnary["message"] as?[[String: Any]] {
self.chats.removeAll()
for arr in messageArray {
self.chats.append(ChatModel(ChatListJSON: arr))
}
}
}
} catch {
print("cannot convert to Json")
}
}
print("print int 122 : \(uidInt!)")
print("Chat List Id DemoChatMessageFactory \(self.chats[uidInt!].chatId)")
print("chat message: \(String(describing: uidInt!)) th \(self.chats[uidInt!].chatMessage)")
self.textData = "\(self.chats[uidInt!].chatMessage)"
self.makeTextMessage(uid, isIncoming: isIncoming, text:self.textData) //Here I am bale to pass textData but ouside the Alamofire block can't access
}
//Here getting empty values
print("uid makeTextFinalMessage \(uid)")
print("in coming makeTextFinalMessage \(isIncoming)")
print("text makeTextFinalMessage \(text)")
//chat count also getting zero count
print("chat count final text\(chats.count)")
print("print chat count : \(self.chats.count)")
return self.makeTextMessage(uid, isIncoming: isIncoming, text:self.textData)
}
}
Test for completion handler
public var res: Any = ""
func getAllChatData(completionhandler:#escaping ([String: Any]?) -> ()){
let URL = "my api"
Alamofire.request(URL).responseJSON {
response in
if let json = response.result.value as? [String: Any] {
completionhandler(json, nil)
}
else if let error = response.result.error as Error? {
completionhandler(nil, error)
}
}
}
and call using like below inside the function
DemoChatMessageFactory.getAllChatData {
(result) in
res = result
print("response (res)")
}
please suggest me the proper way to alamofire with compilation handler

Answer 1

This is an example of converting all methods using the result of asynchronous call. As I have never used Chatto and you are not showing all the types in your code, so you may need to modify many parts of my code, but I believe you can see what you need to do with this code.
import Foundation
import Chatto
import ChattoAdditions
import SwiftyJSON
import Alamofire
class DemoChatMessageFactory {
public static var chats = [ChatModel]()
class func requestMessage(_ uid:String,
completion: #escaping (DemoTextMessageModel?, Error?)->Void) {
print("uid makeMessage : \(uid)")
self.requestMessageData(uid, isIncoming: false) { (model, error) in
completion(model, error)
}
}
class func requestMessageData(_ uid: String, isIncoming: Bool,
completion: #escaping (DemoTextMessageModel?, Error?)->Void) {
if isIncoming {
//...put any code needed when isIncoming is true
self.requestTextFinalMessage(uid, isIncoming: isIncoming) { model in
completion(model, error)
}
} else {
//...put any code needed when isIncoming is false
self.requestTextFinalMessage(uid, isIncoming: isIncoming) { model in
completion(model, error)
}
}
}
public class func makeTextMessage(_ uid: String, isIncoming: Bool, text: String) -> DemoTextMessageModel {
let messageModel = self.makeMessageModel(uid, isIncoming: isIncoming,
type: TextMessageModel<MessageModel>.chatItemType)
let textMessageModel = DemoTextMessageModel(messageModel:messageModel,
text: text)
return textMessageModel
}
public class func requestTextFinalMessage(_ uid: String, isIncoming: Bool,
completion: #escaping (DemoTextMessageModel?, Error?)->Void) {
var text = String()
var uidInt = Int(uid)
print("string uid 121 \(uid)")
print("print is Incomming data or not 1: \(isIncoming)")
print("uid count :\(uid.count)")
let urlString = "[My message Api]"
Alamofire.request(urlString, method: .get).validate().responseJSON {
(response) -> Void in
if let value = response.data {
do {
let json = try JSON(data: value)
if let dictionnary = json.dictionaryObject {
if let messageArray = dictionnary["message"] as?[[String: Any]] {
self.chats.removeAll()
for arr in messageArray {
self.chats.append(ChatModel(ChatListJSON: arr))
}
}
}
print("print int 122 : \(uidInt!)")
print("Chat List Id DemoChatMessageFactory \(self.chats[uidInt!].chatId)")
print("chat message: \(String(describing: uidInt!)) th \(self.chats[uidInt!].chatMessage)")
self.textData = "\(self.chats[uidInt!].chatMessage)"
completion(self.makeTextMessage(uid, isIncoming: isIncoming, text: self.textData), nil)
} catch {
print("cannot convert to Json")
completion(nil, error)
}
} else {
//better generate an error case result, and call completion.
//...
}
}
}
}
I changed some method names from make... to request... to show clarify they are asynchronous methods.
And the usage, if you intend to use your original code as:
let model = DemoChatMessageFactory.makeMessage(uid)
//Do some UI updates using `model`...
You may need to use asynchronous methods like:
DemoChatMessageFactory.requestMessage(uid) { (model, error) in
if let model = model {
//Do some UI updates using `model`...
} else {
//Do something for the error...
}
}