fix: incorrect FreeTube playlist export

app/src/main/java/com/github/libretube/api/PlaylistsHelper.kt

@@ -218,13 +218,17 @@ object PlaylistsHelper {
             getPlaylists()
                 .map { async { getPlaylist(it.id!!) } }
                 .awaitAll()
-                .map {
-                    val videos = it.relatedStreams.map { item ->
-                        item.url.orEmpty().replace("$YOUTUBE_FRONTEND_URL/watch?v=${item.url}", "")
-                    }.map { id ->
-                        FreeTubeVideo(id, it.name.orEmpty(), "", "")
+                .map { playlist ->
+                    val videos = playlist.relatedStreams.map { videoInfo ->
+                        FreeTubeVideo(
+                            videoId = videoInfo.url.orEmpty().toID(),
+                            title = videoInfo.title.orEmpty(),
+                            author = videoInfo.uploaderName.orEmpty(),
+                            authorId = videoInfo.uploaderUrl.orEmpty().toID(),
+                            lengthSeconds = videoInfo.duration ?: 0L
+                        )
                     }
-                    FreeTubeImportPlaylist(it.name.orEmpty(), videos)
+                    FreeTubeImportPlaylist(playlist.name.orEmpty(), videos)
                 }
         }
 

app/src/main/java/com/github/libretube/obj/FreeTubeImportPlaylist.kt

@@ -6,6 +6,6 @@ import kotlinx.serialization.Serializable
 @Serializable
 data class FreeTubeImportPlaylist(
     @SerialName("playlistName") val name: String = "",
-    // if type is `video` -> https://www.youtube.com/watch?v=IT734HriiHQ, works with shorts too
-    var videos: List<FreeTubeVideo> = listOf()
+    var videos: List<FreeTubeVideo> = listOf(),
+    var protected: Boolean = true
 )

app/src/main/java/com/github/libretube/obj/FreeTubeVideo.kt

@@ -7,5 +7,7 @@ data class FreeTubeVideo(
     val videoId: String,
     val title: String,
     val author: String,
-    val authorId: String
+    val authorId: String,
+    val lengthSeconds: Long,
+    val type: String = "video"
 )