import SwiftUI

struct BookmarksView: View {
    @EnvironmentObject var settings: Settings
    @EnvironmentObject var manager: BooruManager
    @Binding var selectedTab: Int
    @State private var bookmarksSearchText: String = ""

    var filteredBookmarks: [Bookmark] {
        guard !bookmarksSearchText.isEmpty else {
            return settings.bookmarks
        }

        return settings.bookmarks
            .filter { $0.tags.joined(separator: " ").lowercased().contains(bookmarksSearchText.lowercased()) }
    }

    var body: some View {
        NavigationStack {
            VStack {
                if settings.bookmarks.isEmpty {
                    ContentUnavailableView("No Bookmarks",
                                           systemImage: "bookmark",
                                           description: Text("Add a bookmark by tapping the bookmark button on a search page."))
                } else {
                    List {
                        if filteredBookmarks.isEmpty && !bookmarksSearchText.isEmpty {
                            Text("No bookmarks match your search")
                        }

                        ForEach(
                            filteredBookmarks,
                            id: \.self
                        ) { bookmark in
                            Button(action: {
                                let previousProvider = settings.preferredBooru

                                settings.preferredBooru = bookmark.provider
                                manager.searchText = bookmark.tags.joined(separator: " ")
                                selectedTab = 0

                                if previousProvider == settings.preferredBooru {
                                    manager.performSearch()
                                }
                            }) {
                                BookmarkListItemView(bookmark: bookmark)
                            }
                            #if os(macOS)
                            .buttonStyle(.plain)
                            #endif
                        }
                        .onDelete(perform: settings.removeBookmark)
                    }
                    #if os(macOS)
                    .listStyle(.plain)
                    #endif
                }
            }
        }
        .navigationTitle("Bookmarks")
        .searchable(text: $bookmarksSearchText)
    }
}

#Preview {
    BookmarksView(selectedTab: .constant(1))
        .environmentObject(Settings())
        .environmentObject(BooruManager(.yandere))
}