YTResponse.swift

import Foundation

struct YTResponse: Codable {
  let items: [Item]?
}

struct Item: Codable, Identifiable {
  let fullID: ID?
  let snippet: Snippet?
  var id: String { fullID?.videoID ?? "" }
  var defaultThumbnailURL: URL? {
    URL(string: snippet?.thumbnails?.thumbnailsDefault?.url ?? "")
  }
  
  enum CodingKeys: String, CodingKey {
    case snippet, fullID = "id"
  }
}

struct ID: Codable {
  let videoID: String?
  
  enum CodingKeys: String, CodingKey {
    case videoID = "videoId"
  }
}

struct Snippet: Codable {
  let title, description: String?
  let thumbnails: Thumbnails?
}

struct Thumbnails: Codable {
  let thumbnailsDefault, medium, high: Default?
  
  enum CodingKeys: String, CodingKey {
    case thumbnailsDefault = "default"
    case medium, high
  }
}

struct Default: Codable {
  let url: String?
  let width, height: Int?
}