import Foundation
import CoreSpotlight
import AppIntents

/// Pushes Linkding bookmarks into the system Spotlight index via the
/// `IndexedEntity` conformance on `BookmarkEntity`.
///
/// This is the step that actually makes bookmarks discoverable: conforming to
/// `IndexedEntity` only describes *how* an entity would be indexed (its
/// `attributeSet`) — nothing reaches Spotlight until the entities are handed to
/// `CSSearchableIndex`. Once indexed, bookmarks show up in Spotlight search and
/// are reachable by Siri / Apple Intelligence.
///
/// All calls are best-effort: failures are logged, never surfaced. If indexing
/// is unavailable or fails, search degrades but nothing else breaks.
enum SpotlightIndexer {
    /// Insert or update the given bookmarks in the Spotlight index.
    static func index(_ bookmarks: [Bookmark]) async {
        guard CSSearchableIndex.isIndexingAvailable(), !bookmarks.isEmpty else { return }
        do {
            try await CSSearchableIndex.default()
                .indexAppEntities(bookmarks.map(BookmarkEntity.init(from:)))
            Log.spotlight.info("Indexed \(bookmarks.count, privacy: .public) bookmarks")
        } catch {
            Log.spotlight.error("Index failed: \(error.localizedDescription, privacy: .public)")
        }
    }

    /// Remove bookmarks from the index by id (e.g. after delete / archive).
    static func remove(ids: [Int]) async {
        guard CSSearchableIndex.isIndexingAvailable(), !ids.isEmpty else { return }
        do {
            try await CSSearchableIndex.default()
                .deleteAppEntities(identifiedBy: ids, ofType: BookmarkEntity.self)
            Log.spotlight.info("Removed \(ids.count, privacy: .public) bookmarks")
        } catch {
            Log.spotlight.error("Delete failed: \(error.localizedDescription, privacy: .public)")
        }
    }
}