Playlist Fragment

app/src/main/java/com/github/libretube/ChannelFragment.kt

@@ -23,9 +23,9 @@ class ChannelFragment : Fragment() {
 
     private var channel_id: String? = null
     private val TAG = "ChannelFragment"
-    //lateinit var recyclerView: RecyclerView
     var nextPage: String? =null
-    lateinit var channelAdapter: ChannelAdapter
+    var channelAdapter: ChannelAdapter? = null
+    var isLoading = true
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -69,7 +69,8 @@ class ChannelFragment : Fragment() {
                     Log.e(TAG, "HttpException, unexpected response")
                     return@launchWhenCreated
                 }
-                nextPage = response.nextpage!!
+                nextPage = response.nextpage
+                isLoading=false
                 runOnUiThread {
                     view.findViewById<TextView>(R.id.channel_name).text=response.name
                     view.findViewById<TextView>(R.id.channel_subs).text=response.subscriberCount.videoViews() + " subscribers"
@@ -86,7 +87,8 @@ class ChannelFragment : Fragment() {
                             if (scrollView.getChildAt(0).bottom
                                 == (scrollView.height + scrollView.scrollY)) {
                                 //scroll view is at bottom
-                                if(nextPage!=null){
+                                if(nextPage!=null && !isLoading){
+                                    isLoading=true
                                     fetchNextPage()
                                 }
 
@@ -114,7 +116,8 @@ class ChannelFragment : Fragment() {
                     return@launchWhenCreated
                 }
                 nextPage = response.nextpage
-                channelAdapter.updateItems(response.relatedStreams!!)
+                channelAdapter?.updateItems(response.relatedStreams!!)
+                isLoading=false
 
             }
         }
@@ -127,7 +130,10 @@ class ChannelFragment : Fragment() {
     }
 
     override fun onDestroyView() {
-
+        val scrollView = view?.findViewById<ScrollView>(R.id.channel_scrollView)
+        scrollView?.viewTreeObserver?.removeOnScrollChangedListener {
+        }
+        channelAdapter=null
         view?.findViewById<RecyclerView>(R.id.channel_recView)?.adapter=null
         super.onDestroyView()
     }

app/src/main/java/com/github/libretube/PipedApi.kt

@@ -1,12 +1,9 @@
 package com.github.libretube
 
-import com.github.libretube.obj.Channel
+import com.github.libretube.obj.*
 import retrofit2.http.GET
 import retrofit2.http.Path
 import retrofit2.http.Query
-import com.github.libretube.obj.StreamItem
-import com.github.libretube.obj.Streams
-import com.github.libretube.obj.SearchResult
 
 interface PipedApi {
     @GET("trending")
@@ -29,4 +26,11 @@ interface PipedApi {
 
     @GET("nextpage/channel/{channelId}")
     suspend fun getChannelNextPage(@Path("channelId") channelId: String, @Query("nextpage") nextPage: String): Channel
+
+    @GET("playlists/{playlistId}")
+    suspend fun getPlaylist(@Path("playlistId") playlistId: String): Playlist
+
+    @GET("nextpage/playlists/{playlistId}")
+    suspend fun getPlaylistNextPage(@Path("playlistId") playlistId: String, @Query("nextpage") nextPage: String): Playlist
+
 }

app/src/main/java/com/github/libretube/PlaylistFragment.kt

@@ -0,0 +1,123 @@
+package com.github.libretube
+
+import android.os.Bundle
+import android.util.Log
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.ScrollView
+import android.widget.TextView
+import androidx.lifecycle.lifecycleScope
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.github.libretube.adapters.ChannelAdapter
+import com.github.libretube.adapters.PlaylistAdapter
+import com.squareup.picasso.Picasso
+import retrofit2.HttpException
+import java.io.IOException
+
+
+class PlaylistFragment : Fragment() {
+    private var playlist_id: String? = null
+    private val TAG = "PlaylistFragment"
+    var nextPage: String? =null
+    var playlistAdapter: PlaylistAdapter? = null
+    var isLoading = true
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        arguments?.let {
+            playlist_id = it.getString("playlist_id")
+        }
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_playlist, container, false)
+    }
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+
+        playlist_id = playlist_id!!.replace("/playlist?list=","")
+        view.findViewById<TextView>(R.id.playlist_name).text=playlist_id
+        val recyclerView = view.findViewById<RecyclerView>(R.id.playlist_recView)
+        recyclerView.layoutManager = LinearLayoutManager(context)
+
+        fetchPlaylist(view)
+    }
+    private fun fetchPlaylist(view: View){
+        fun run() {
+            lifecycleScope.launchWhenCreated {
+                val response = try {
+                    RetrofitInstance.api.getPlaylist(playlist_id!!)
+                }catch(e: IOException) {
+                    println(e)
+                    Log.e(TAG, "IOException, you might not have internet connection")
+                    return@launchWhenCreated
+                } catch (e: HttpException) {
+                    Log.e(TAG, "HttpException, unexpected response")
+                    return@launchWhenCreated
+                }
+                nextPage = response.nextpage
+                isLoading=false
+                runOnUiThread {
+                    view.findViewById<TextView>(R.id.playlist_name).text=response.name
+                    view.findViewById<TextView>(R.id.playlist_uploader).text=response.uploader
+                    view.findViewById<TextView>(R.id.playlist_totVideos).text=response.videos.toString()+" Videos"
+                    playlistAdapter = PlaylistAdapter(response.relatedStreams!!.toMutableList())
+                    view.findViewById<RecyclerView>(R.id.playlist_recView).adapter = playlistAdapter
+                    val scrollView = view.findViewById<ScrollView>(R.id.playlist_scrollview)
+                    scrollView.viewTreeObserver
+                        .addOnScrollChangedListener {
+                            if (scrollView.getChildAt(0).bottom
+                                == (scrollView.height + scrollView.scrollY)) {
+                                //scroll view is at bottom
+                                if(nextPage!=null && !isLoading){
+                                    isLoading=true
+                                    fetchNextPage()
+                                }
+
+                            } else {
+                                //scroll view is not at bottom
+                            }
+                        }
+                }
+            }
+        }
+        run()
+    }
+
+    private fun fetchNextPage(){
+        fun run() {
+
+            lifecycleScope.launchWhenCreated {
+                val response = try {
+                    RetrofitInstance.api.getPlaylistNextPage(playlist_id!!,nextPage!!)
+                } catch (e: IOException) {
+                    println(e)
+                    Log.e(TAG, "IOException, you might not have internet connection")
+                    return@launchWhenCreated
+                } catch (e: HttpException) {
+                    Log.e(TAG, "HttpException, unexpected response,"+e.response())
+                    return@launchWhenCreated
+                }
+                nextPage = response.nextpage
+                playlistAdapter?.updateItems(response.relatedStreams!!)
+                isLoading=false
+
+            }
+        }
+        run()
+    }
+
+    private fun Fragment?.runOnUiThread(action: () -> Unit) {
+        this ?: return
+        if (!isAdded) return // Fragment not attached to an Activity
+        activity?.runOnUiThread(action)
+    }
+}

app/src/main/java/com/github/libretube/adapters/PlaylistAdapter.kt

@@ -0,0 +1,59 @@
+package com.github.libretube.adapters
+
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.os.bundleOf
+import androidx.recyclerview.widget.RecyclerView
+import com.github.libretube.MainActivity
+import com.squareup.picasso.Picasso
+import com.github.libretube.PlayerFragment
+import com.github.libretube.R
+import com.github.libretube.obj.StreamItem
+import com.github.libretube.videoViews
+
+class PlaylistAdapter(private val videoFeed: MutableList<StreamItem>): RecyclerView.Adapter<PlaylistViewHolder>() {
+    override fun getItemCount(): Int {
+        return videoFeed.size
+    }
+    fun updateItems(newItems: List<StreamItem>){
+        videoFeed.addAll(newItems)
+        //println("suck another dick: "+newItems[0].title)
+        notifyDataSetChanged()
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): PlaylistViewHolder {
+        val layoutInflater = LayoutInflater.from(parent.context)
+        val cell = layoutInflater.inflate(R.layout.video_channel_row,parent,false)
+        return PlaylistViewHolder(cell)
+    }
+
+    override fun onBindViewHolder(holder: PlaylistViewHolder, position: Int) {
+        val streamItem = videoFeed[position]
+        holder.v.findViewById<TextView>(R.id.channel_description).text = streamItem.title
+        holder.v.findViewById<TextView>(R.id.channel_views).text = streamItem.uploaderName
+        val thumbnailImage = holder.v.findViewById<ImageView>(R.id.channel_thumbnail)
+        Picasso.get().load(streamItem.thumbnail).into(thumbnailImage)
+        holder.v.setOnClickListener{
+            var bundle = Bundle()
+            bundle.putString("videoId",streamItem.url!!.replace("/watch?v=",""))
+            var frag = PlayerFragment()
+            frag.arguments = bundle
+            val activity = holder.v.context as AppCompatActivity
+            activity.supportFragmentManager.beginTransaction()
+                .remove(PlayerFragment())
+                .commit()
+            activity.supportFragmentManager.beginTransaction()
+                .replace(R.id.container, frag)
+                .commitNow()
+        }
+    }
+}
+class PlaylistViewHolder(val v: View): RecyclerView.ViewHolder(v){
+    init {
+    }
+}

app/src/main/java/com/github/libretube/adapters/SearchAdapter.kt

@@ -103,6 +103,12 @@ class CustomViewHolder1(private val v: View): RecyclerView.ViewHolder(v){
         playlistChannelName.text = item.uploaderName
         val playlistVideosNumber = v.findViewById<TextView>(R.id.search_playlist_videos)
         playlistVideosNumber.text = item.videos.toString()+" videos"
+        v.setOnClickListener {
+            //playlist clicked
+            val activity = v.context as MainActivity
+            val bundle = bundleOf("playlist_id" to item.url)
+            activity.navController.navigate(R.id.playlistFragment,bundle)
+        }
     }
 
     fun bind(searchItem: SearchItem) {

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

@@ -8,6 +8,6 @@ data class Playlist(
     var uploader: String? = null,
     var uploaderUrl: String? = null,
     var uploaderAvatar: String? = null,
-    var videos: Int = 0,
+    var videos: Int? = 0,
     var relatedStreams: List<StreamItem>? = null,
 )

app/src/main/res/layout/fragment_playlist.xml

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".PlaylistFragment"
+    android:id="@+id/playlist_scrollview">
+<LinearLayout
+    android:orientation="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/playlist_name"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text=""
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:padding="8dp"/>
+    <TextView
+        android:id="@+id/playlist_uploader"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="8dp"
+        android:textStyle="bold"/>
+    <TextView
+        android:id="@+id/playlist_totVideos"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:padding="8dp"/>
+    <RelativeLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:descendantFocusability="blocksDescendants">
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/playlist_recView"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:nestedScrollingEnabled="false" />
+    </RelativeLayout>
+
+</LinearLayout>
+
+
+</ScrollView>

app/src/main/res/navigation/nav.xml

@@ -45,4 +45,13 @@
             android:name="channel_id"
             app:argType="string" />
     </fragment>
+    <fragment
+        android:id="@+id/playlistFragment"
+        android:name="com.github.libretube.PlaylistFragment"
+        android:label="fragment_playlist"
+        tools:layout="@layout/fragment_playlist" >
+        <argument
+            android:name="playlist_id"
+            app:argType="string" />
+    </fragment>
 </navigation>

build.gradle

@@ -6,7 +6,7 @@ buildscript {
     }
     dependencies {
         classpath 'com.android.tools.build:gradle:7.1.0'
-        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.0'
+        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:1.6.10'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files