service.swift

//
//  Service.swift
//  Gallery
//
//  Created by Fabiola Ramirez on 3/23/20.
//  Copyright © 2020 Fabiola Ramirez. All rights reserved.
//

import Foundation
import UIKit


struct Service {
    
    static let sharedInstance = Service()
    
    func getSongs(success: @escaping(_ photoList: [[String: Any]]) -> (), failure: @escaping(_ errorResponse: ErrorMessage)-> ()){
        let request = URLRequest(url: URL(string: "https://api.flickr.com/services/rest/?method=flickr.photos.search&api_key=f9cc01 4fa76b098f9e82f1c288379ea1&tags=kitten&page=1&format=json&nojsoncallback=1")!)
        let session = URLSession.shared
        let task = session.dataTask(with: request as URLRequest) { data, response, error in
            
            guard (error == nil) else {
                failure(.noConnection)
                return
            }
            
            guard let statusCode = (response as? HTTPURLResponse)?.statusCode, statusCode >= 200 && statusCode <= 299 else {
                failure(.statusCode)
                return
            }
            
            guard let data = data else {
                failure(.noFound)
                return
            }
            
            guard let json = try? JSONSerialization.jsonObject(with: data, options: []) else {
                failure(.unableToParse)
                return
            }
            let parsedResult = try? JSONSerialization.jsonObject(with: data, options: [])
            
            guard let dictionary = parsedResult as? [String: Any] else {
                failure(.unableToConvert)
                return
            }
            
            
            guard let results = dictionary["photo"] as? [[String: Any]] else {
                failure(.noKeyFound)
                return
            }
            
            let photoResults = dictionary["photo"] as? [[String: Any]]
            /*var songList: [Song] = []
            for obj in songResults! {
                let song = Song(dictionary: obj)
                songList.append(song!)
            }
            success(songList)*/
            print("photos: \(photoResults)")
            success(photoResults!)
        }
        task.resume()
        
    }
    
}