feat: Tags!!

Amperfy/Screens/ViewController/EntityPreviewVC.swift

@@ -22,6 +22,7 @@
 import AmperfyKit
 import Foundation
 import MarqueeLabel
+import SwiftUI
 import UIKit
 
 typealias GetPlayContextCallback = () -> PlayContext?
@@ -69,6 +70,7 @@ class EntityPreviewActionBuilder {
   private var isGoToSiteUrl = false
   private var isShowPodcastDetails = false
   private var isShowSongDetails = false
+  private var isShowSongTags = false
   private var isInstantMix = false
   private var isShareable = false
 
@@ -128,6 +130,10 @@ class EntityPreviewActionBuilder {
        let lyricsShowAction = createShowLyricsAction(song: song) {
       gotoActions.append(lyricsShowAction)
     }
+    if isShowSongTags,
+       let song = (entityContainer as? AbstractPlayable)?.asSong {
+      gotoActions.append(createShowSongTagsAction(song: song))
+    }
     if isShowPodcastDetails,
        let podcastEpisode = (entityContainer as? AbstractPlayable)?.asPodcastEpisode {
       gotoActions.append(createShowEpisodeDetailsAction(podcastEpisode: podcastEpisode))
@@ -265,6 +271,7 @@ class EntityPreviewActionBuilder {
     isGoToSiteUrl = false
     isShowPodcastDetails = false
     isShowSongDetails = true
+    isShowSongTags = SongTagKey.allCases.contains { $0.value(for: song) != nil }
     isInstantMix = appDelegate.storage.settings.user.isOnlineMode
     isShareable = song.isCached || appDelegate.storage.settings.user.isOnlineMode
   }
@@ -861,6 +868,26 @@ class EntityPreviewActionBuilder {
     }
   }
 
+  private func createShowSongTagsAction(song: Song) -> UIAction {
+    UIAction(title: "View Tags", image: UIImage(systemName: "tag")) { [weak self] _ in
+      self?.showSongTags(song: song)
+    }
+  }
+
+  private func showSongTags(song: Song) {
+    // Bail out silently if the managed object has been invalidated between menu
+    // construction and the user tapping the action — prevents an empty/broken sheet.
+    guard song.managedObject.managedObjectContext != nil else { return }
+    let tagsView = SongTagsView(song: song)
+    let hostingVC = UIHostingController(rootView: tagsView)
+    let navVC = UINavigationController(rootViewController: hostingVC)
+    if let sheet = navVC.sheetPresentationController {
+      sheet.detents = [.large()]
+      sheet.prefersGrabberVisible = true
+    }
+    rootView.present(navVC, animated: true)
+  }
+
   private func createShowLyricsAction(song: Song) -> UIAction? {
     guard let playable = entityContainer as? AbstractPlayable,
           let song = playable.asSong,

Amperfy/SwiftUI/SongTags/SongTagsFilterView.swift

@@ -0,0 +1,58 @@
+//
+//  SongTagsFilterView.swift
+//  Amperfy
+//
+//  Created by Amperfy on 25.05.26.
+//  Copyright (c) 2026 Maximilian Bauer. All rights reserved.
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+
+import Foundation
+import SwiftUI
+
+// MARK: - SongTagsFilterView
+
+struct SongTagsFilterView: View {
+  @ObservedObject
+  var store: TagVisibilityStore
+  @Environment(\.dismiss)
+  private var dismiss
+
+  var body: some View {
+    List {
+      Section {
+        ForEach(SongTagKey.allCases, id: \.rawValue) { key in
+          let isOn = Binding<Bool>(
+            get: { !store.hiddenKeys.contains(key.rawValue) },
+            set: { store.setVisible(key, visible: $0) }
+          )
+          SettingsCheckBoxRow(title: key.displayName, isOn: isOn)
+        }
+      }
+      Section {
+        Button("Show All") {
+          store.showAll()
+        }
+      }
+    }
+    .navigationTitle("Visible Tags")
+    .navigationBarTitleDisplayMode(.inline)
+    .toolbar {
+      ToolbarItem(placement: .navigationBarTrailing) {
+        Button("Done") { dismiss() }
+      }
+    }
+  }
+}