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path: root/Sora/Views/FavoriteMenuButtonView.swift
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import SwiftUI

struct FavoriteMenuButtonView: View {
  @EnvironmentObject var settings: SettingsManager
  @EnvironmentObject var manager: BooruManager
  let post: BooruPost
  var disableNewCollection = false
  @State private var isNewCollectionAlertPresented = false
  @State private var newCollectionName = ""
  @State private var itemPendingCollectionAssignment: UUID?
  @State private var isCollectionErrorAlertPresented = false

  var body: some View {
    let isFavorited = settings.isFavorite(postId: post.id, provider: manager.provider)

    Menu {
      ForEach(settings.folders.filter { $0.topLevelName == nil }, id: \.id) { folder in
        Button(action: {
          settings.addFavorite(post: post, provider: manager.provider, folder: folder.id)
        }) {
          Label(folder.name, systemImage: "folder")
        }
        .disabled(isFavoritedInFolder(folderId: folder.id))
      }

      let topLevelFolders = settings.folders
        .reduce(into: [String: [SettingsFolder]]()) { result, folder in
          guard let topLevelName = folder.topLevelName else { return }

          result[topLevelName, default: []].append(folder)
        }

      ForEach(topLevelFolders.keys.sorted(), id: \.self) { topLevelName in
        Menu {
          let topLevelFolder = settings.folders.first { $0.name == topLevelName }

          if let topLevelFolder {
            Button(action: {
              settings.addFavorite(
                post: post, provider: manager.provider, folder: topLevelFolder.id
              )
            }) {
              Text("Uncategorized")
            }
            .disabled(isFavoritedInFolder(folderId: topLevelFolder.id))
          } else {
            Button(action: {
              let newFolder = SettingsFolder(name: topLevelName)

              settings.folders.append(newFolder)
              settings.addFavorite(post: post, provider: manager.provider, folder: newFolder.id)
            }) {
              Text("Uncategorized")
            }
          }

          Divider()

          ForEach(topLevelFolders[topLevelName] ?? [], id: \.id) { folder in
            Button(action: {
              settings.addFavorite(post: post, provider: manager.provider, folder: folder.id)
            }) {
              Text(folder.shortName)
            }
            .disabled(isFavoritedInFolder(folderId: folder.id))
          }
        } label: {
          Text(topLevelName)
        }
      }

      Button(action: {
        isNewCollectionAlertPresented = true
      }) {
        Label("New Collection", systemImage: "plus")
      }
      .disabled(disableNewCollection)
    } label: {
      if isFavorited {
        Label("Favorited", systemImage: "heart.fill")
      } else {
        Label("Favorite", systemImage: "heart")
      }

      // if isFavorited {
      //   Label("Remove from Favorites", systemImage: "heart.fill")
      // } else {
      //   Label("Add to Favorites", systemImage: "heart")
      // }
    } primaryAction: {
      if isFavorited {
        settings.removeFavorite(withPostId: post.id, provider: manager.provider)
      } else {
        settings.addFavorite(post: post, provider: manager.provider)
      }
    }
    .collectionAlerts(
      isNewCollectionAlertPresented: $isNewCollectionAlertPresented,
      newCollectionName: $newCollectionName,
      isCollectionErrorAlertPresented: $isCollectionErrorAlertPresented
    ) { newCollectionName in
      let newFolder = SettingsFolder(name: newCollectionName)

      settings.folders.append(newFolder)

      settings.addFavorite(post: post, provider: manager.provider, folder: newFolder.id)
    }
  }

  private func isFavoritedInFolder(folderId: UUID) -> Bool {
    settings.favorites.contains { favorite in
      favorite.folder == folderId && favorite.postId == post.id
        && favorite.provider == manager.provider
    }
  }
}