import Foundation

/// Simple in-app debug log — viewable from ScanView
class DebugLog: ObservableObject {
    static let shared = DebugLog()

    @Published var entries: [String] = []

    private let maxEntries = 200

    func log(_ message: String) {
        let ts = DateFormatter.localizedString(from: Date(), dateStyle: .none, timeStyle: .medium)
        let entry = "[\(ts)] \(message)"
        NSLog("[DebugLog] \(message)")
        DispatchQueue.main.async {
            self.entries.append(entry)
            if self.entries.count > self.maxEntries {
                self.entries.removeFirst(self.entries.count - self.maxEntries)
            }
        }
    }

    func clear() {
        DispatchQueue.main.async {
            self.entries.removeAll()
        }
    }

    /// Get all entries as a single string for clipboard
    var allText: String {
        entries.joined(separator: "\n")
    }
}