djid_sirani_ios/Sirani/View/News/Detail/NewsDetailPresenter.swift

//
//  NewsDetailPresenter.swift
//  Sirani
//
//  Created by Anhar Solehudin on 06/04/19.
//  Copyright © 2019 Anhar Solehudin. All rights reserved.
//

import Foundation
import SwiftyJSON

class NewsDetailPresenter {
    
    private let siraniApiServices: SiraniApiServices
    weak private var view: NewsDetailViewDelegate?
    
    init(siraniApiServices: SiraniApiServices) {
        self.siraniApiServices = siraniApiServices
    }
    
    func attachView(view: NewsDetailViewDelegate?) {
        self.view = view
    }
    
    func detachView() {
        self.view = nil
    }
    
    func loadData(newsId: Int) {
        self.view?.showLoading()
        
        siraniApiServices.postToGetNewsDetail(newsId: newsId).responseJSON { response in
            if response.error == nil {
                guard let data = response.data else { return }
                if let json = try? JSON(data: data) {
                    let newsDetail = NewsDetail(
                        id: json["id"].intValue,
                        title_news: json["title_news"].stringValue,
                        pra_news: json["pra_news"].stringValue,
                        news: json["news"].stringValue,
                        create_date: json["create_date"].stringValue
                    )
                    self.setNewsDetail(newsDetail: newsDetail)
                } else {
                    self.showNoData()
                }
            } else {
                self.showNoData()
            }
        }
    }
    
    // other functions
    private func setNewsDetail(newsDetail: NewsDetail) {
        self.view?.setNewsDetail(newsDetail: newsDetail)
        DispatchQueue.main.asyncAfter(deadline: .now() + 0.6) {
            self.view?.hideLoading()
        }
    }
    
    private func showNoData() {
        DispatchQueue.main.asyncAfter(deadline: .now() + 1.0) {
            self.view?.hideLoading()
        }
    }
}