import Foundation
import Combine

@available(macOS 10.15, iOS 13.0, *)
@MainActor
final class LibraryViewModel: ObservableObject {
    @Published var bundleIndex: BundleIndex?
    @Published var searchText: String = ""

    var filteredBooks: [BookMeta] {
        guard let books = bundleIndex?.books else { return [] }
        let q = searchText.trimmingCharacters(in: .whitespacesAndNewlines)
        if q.isEmpty { return books.sorted { ($0.last_open ?? 0) > ($1.last_open ?? 0) } }
        return books.filter { $0.title.localizedCaseInsensitiveContains(q) || $0.author.localizedCaseInsensitiveContains(q) }
            .sorted { ($0.last_open ?? 0) > ($1.last_open ?? 0) }
    }

    func attach(index: BundleIndex) { self.bundleIndex = index }
}