fix: subscription button state not updated after starting next video

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

@@ -61,31 +61,4 @@ object SubscriptionHelper {
 
     suspend fun submitFeedItemChange(feedItem: SubscriptionsFeedItem) =
         feedRepository.submitFeedItemChange(feedItem)
-
-    fun handleUnsubscribe(
-        context: Context,
-        channelId: String,
-        channelName: String?,
-        onUnsubscribe: () -> Unit
-    ) {
-        if (!PreferenceHelper.getBoolean(PreferenceKeys.CONFIRM_UNSUBSCRIBE, false)) {
-            runBlocking {
-                unsubscribe(channelId)
-                onUnsubscribe()
-            }
-            return
-        }
-
-        MaterialAlertDialogBuilder(context)
-            .setTitle(R.string.unsubscribe)
-            .setMessage(context.getString(R.string.confirm_unsubscribe, channelName))
-            .setPositiveButton(R.string.unsubscribe) { _, _ ->
-                runBlocking {
-                    unsubscribe(channelId)
-                    onUnsubscribe()
-                }
-            }
-            .setNegativeButton(R.string.cancel, null)
-            .show()
-    }
 }

app/src/main/java/com/github/libretube/ui/extensions/SetupSubscriptionButton.kt

@@ -1,13 +1,14 @@
 package com.github.libretube.ui.extensions
 
+import android.content.Context
 import android.widget.TextView
-import androidx.core.view.isGone
 import androidx.core.view.isVisible
 import com.github.libretube.R
 import com.github.libretube.api.SubscriptionHelper
 import com.github.libretube.constants.PreferenceKeys
 import com.github.libretube.helpers.PreferenceHelper
 import com.google.android.material.button.MaterialButton
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
@@ -24,47 +25,78 @@ fun TextView.setupSubscriptionButton(
 ) {
     if (channelId == null) return
 
+    val notificationsEnabled = PreferenceHelper
+        .getBoolean(PreferenceKeys.NOTIFICATION_ENABLED, true)
     var subscribed: Boolean? = false
 
+    fun updateUIStateAndNotifyObservers() {
+        subscribed?.let { subscribed -> onIsSubscribedChange(subscribed) }
+
+        this@setupSubscriptionButton.text =
+            if (subscribed == true) context.getString(R.string.unsubscribe)
+            else context.getString(R.string.subscribe)
+
+        notificationBell?.isVisible = subscribed == true && notificationsEnabled
+        this@setupSubscriptionButton.isVisible = true
+    }
+
     CoroutineScope(Dispatchers.IO).launch {
         subscribed = isSubscribed ?: SubscriptionHelper.isSubscribed(channelId)
 
         withContext(Dispatchers.Main) {
-            subscribed?.let { subscribed -> onIsSubscribedChange(subscribed) }
+            updateUIStateAndNotifyObservers()
-
-            if (subscribed == true) {
-                this@setupSubscriptionButton.text = context.getString(R.string.unsubscribe)
-            } else {
-                notificationBell?.isGone = true
-            }
-            this@setupSubscriptionButton.isVisible = true
         }
     }
 
     notificationBell?.setupNotificationBell(channelId)
 
     setOnClickListener {
+        CoroutineScope(Dispatchers.Main).launch {
             if (subscribed == true) {
-            SubscriptionHelper.handleUnsubscribe(context, channelId, channelName) {
+                val unsubscribeAction: (suspend () -> Unit) = {
-                text = context.getString(R.string.subscribe)
+                    withContext(Dispatchers.IO) {
-                notificationBell?.isGone = true
+                        SubscriptionHelper.unsubscribe(channelId)
-
+                    }
                     subscribed = false
-                onIsSubscribedChange(false)
+
+                    updateUIStateAndNotifyObservers()
+                }
+
+                if (!PreferenceHelper.getBoolean(PreferenceKeys.CONFIRM_UNSUBSCRIBE, false)) {
+                    showUnsubscribeDialog(context, channelName) {
+                        CoroutineScope(Dispatchers.Main).launch { unsubscribeAction() }
                     }
                 } else {
-            CoroutineScope(Dispatchers.Main).launch {
+                    unsubscribeAction()
-                withContext(Dispatchers.IO) {
+                }
-                    SubscriptionHelper.subscribe(channelId, channelName, channelAvatar, channelVerified)
+            } else {
+                withContext(Dispatchers.IO) {
+                    SubscriptionHelper.subscribe(
+                        channelId,
+                        channelName,
+                        channelAvatar,
+                        channelVerified
+                    )
                 }
-
-                text = context.getString(R.string.unsubscribe)
-                notificationBell?.isVisible = PreferenceHelper
-                    .getBoolean(PreferenceKeys.NOTIFICATION_ENABLED, true)
-
                 subscribed = true
-                onIsSubscribedChange(true)
+
+                updateUIStateAndNotifyObservers()
             }
         }
     }
 }
+
+fun showUnsubscribeDialog(
+    context: Context,
+    channelName: String?,
+    onUnsubscribe: () -> Unit
+) {
+    MaterialAlertDialogBuilder(context)
+        .setTitle(R.string.unsubscribe)
+        .setMessage(context.getString(R.string.confirm_unsubscribe, channelName))
+        .setPositiveButton(R.string.unsubscribe) { _, _ ->
+            onUnsubscribe()
+        }
+        .setNegativeButton(R.string.cancel, null)
+        .show()
+}