Created
March 6, 2016 14:02
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SpotifyAPI helper in Swift
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import Foundation | |
import Alamofire | |
import RxSwift | |
import SwiftyJSON | |
class SpotifyAPI { | |
let accessToken:String | |
let url:String | |
let params:[String:AnyObject] | |
var items:[JSON] = [] | |
var offset = 0 | |
var limit = 30 | |
init(accessToken:String, url:String, params:[String:AnyObject]) { | |
self.accessToken = accessToken | |
self.url = url | |
self.params = params | |
} | |
func getAll(offset:Int = 0) -> Observable<JSON> { | |
let headers = [ | |
"Accept": "application/json; charset=utf-8", | |
"Authorization": "Bearer \(self.accessToken)" | |
] | |
var params = self.params | |
params["offset"] = offset | |
params["limit"] = self.limit | |
DLOG("Getting `\(url)`: params: \(params)") | |
return Observable.create({ (subscriber) -> Disposable in | |
delay(0.5, closure: { | |
Alamofire.request(.GET, self.url, parameters: params, headers: headers).validate().responseJSON { (response) in | |
switch(response.result) { | |
case .Success: | |
let data = JSON(response.result.value!) | |
self.items.append(data) | |
subscriber.onNext(data) | |
subscriber.onCompleted() | |
case .Failure(let error): | |
let data = String(data: response.data!, encoding: NSUTF8StringEncoding) | |
DLOG("Got error from Spotify API: \(data)") | |
subscriber.onError(error) | |
subscriber.onCompleted() | |
return | |
} | |
} | |
}) | |
return AnonymousDisposable { | |
} | |
}).flatMap({ (data:JSON) -> Observable<JSON> in | |
let totalItems = self.items.count * self.limit | |
if data["total"].intValue > totalItems && data["items"].array!.count > 0 { | |
return self.getAll(totalItems) | |
} | |
return Observable.empty() | |
}) | |
} | |
} | |
// And here example usage | |
let api = SpotifyAPI(accessToken: SpotifyAuth.sharedInstance.session!.accessToken, url: "https://api.spotify.com/v1/me/tracks", params: [:]) | |
let observableApi = api.getAll() | |
_ = observableApi.subscribe(onNext: nil, onError: { (error) in | |
DLOG("Got error on Spotify API: \(error)") | |
self.delegate?.playlist(self, gotError: error as NSError) | |
done() | |
}, onCompleted: { | |
self.tracks = api.items.flatMap({ (data) -> [JSON] in | |
let items = data["items"].array! | |
return items | |
}).flatMap({ (track) -> Track? in | |
guard let trackId = track["track"]["id"].string else { | |
return nil | |
} | |
return Track(id: trackId, name: track["track"]["name"].string!, album: track["track"]["album"]["name"].string!, artist: track["track"]["artists"][0]["name"].string!) | |
}) | |
done() | |
}, onDisposed: nil) |
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