import AppKit
import Foundation

/// 選択されたファイルをゴミ箱へ送る。削除ではないので Finder から戻せる。
enum TrashService {
    struct Outcome: Sendable {
        var trashed: [URL] = []
        var failed: [URL] = []
        var errorDescription: String?
    }

    @MainActor
    static func moveToTrash(_ urls: [URL]) async -> Outcome {
        guard !urls.isEmpty else { return Outcome() }

        let (moved, error): ([URL: URL], Error?) = await withCheckedContinuation { continuation in
            NSWorkspace.shared.recycle(urls) { newURLs, error in
                continuation.resume(returning: (newURLs, error))
            }
        }

        let trashed = urls.filter { moved[$0] != nil }
        let failed = urls.filter { moved[$0] == nil }
        return Outcome(
            trashed: trashed,
            failed: failed,
            errorDescription: failed.isEmpty ? nil : error?.localizedDescription
        )
    }
}