Video.scala

package lila.video

case class Video(
    _id: Video.ID, // youtube ID
    title: String,
    author: String,
    targets: List[Target],
    tags: List[Tag],
    lang: Lang,
    ads: Boolean,
    startTime: Int, // in seconds
    metadata: Youtube.Metadata,
    createdAt: DateTime
):

  inline def id = _id

  def thumbnail = s"https://img.youtube.com/vi/$id/0.jpg"

  def similarity(other: Video) =
    (tags intersect other.tags).size +
      (targets intersect other.targets).size +
      (if (author == other.author) 1 else 0)

  def durationString =
    metadata.duration.map { seconds =>
      "%02d:%02d".format(seconds / 60, seconds % 60)
    }

  override def toString = s"[$id] $title ($author)"

object Target:
  val BEGINNER     = 1
  val INTERMEDIATE = 2
  val ADVANCED     = 3
  val EXPERT       = 4

  def name(target: Int) =
    target match
      case BEGINNER     => "beginner"
      case INTERMEDIATE => "intermediate"
      case ADVANCED     => "advanced"
      case EXPERT       => "expert"
      case _            => ""

object Video:

  type ID = String