PokemonAPI

.swift

//
//  PokemonAPI.swift
//  PokeWhat
//
//  Created by Charles Kang on 8/5/16.
//  Copyright © 2016 Charles Kang. All rights reserved.
//

import Foundation
import SwiftyJSON

public func main(function: Void -> Void)
{
    dispatch_async(dispatch_get_main_queue(), function)
}

public func background(function: Void -> Void)
{
    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0), function)
}

enum Result<T>
{
    case success(T)
    case failure(ErrorType)
}

enum Error: ErrorType
{
    case InvalidJSON
}

class PokemonAPI {
    
    func fetch(completion: Result<[[String:String]]> -> Void)
    {
        let baseURL = "https://pokeapi.co/api/v2/pokemon-species/?limit=151"
        
        background {
            guard let url = NSURL(string: baseURL) else { return }
            
            guard let data = try? NSData(contentsOfURL: url, options: []) else {
                main { completion(.failure(Error.InvalidJSON)) }
                return
            }
            
            let json = JSON(data: data)
            let pokemon = self.parsePokemonJSON(json)
            
            main { completion(.success(pokemon)) }
            print(pokemon)
        }
    }
    
    func parsePokemonJSON(json: JSON) -> [[String:String]]
    {
        var pokemonObjects = [[String:String]]()
        
        for (_, result) in json {
            let results = result["results"].stringValue
            print(results)
            
            let obj: [String:String] = ["results": results]
            
            pokemonObjects.append(obj)
        }
        return pokemonObjects
    }
}