persephone/Persephone/Components/Shared/ImageDataProviders/MPDAlbumArtImageDataProvider.swift

//
//  MPDAlbumArtImageDataProvider.swift
//  Persephone
//
//  Created by Daniel Barber on 2/1/20.
//  Copyright © 2020 Dan Barber. All rights reserved.
//

import Foundation
import Kingfisher

public struct MPDAlbumArtImageDataProvider: ImageDataProvider {
  let song: MPDClient.MPDSong

  init(song: MPDClient.MPDSong, cacheKey: String? = nil) {
    self.song = song
    self.cacheKey = cacheKey ?? song.uriString
  }

  public var cacheKey: String

  public func data(handler: @escaping (Result<Data, Error>) -> Void) {
    App.mpdClient.fetchAlbumArt(song: song) { imageData in
      guard let imageData = imageData
        else { return }

      handler(.success(imageData))
    }
  }

  public var contentURL: String? {
    return song.uriString
  }
}