import Foundation

/// The underlying sensing technology powering a connection tier.
enum ProximityEngine: String, CaseIterable, Codable {
    case uwb      // Nearby Interaction (U1/U2 chip)
    case ble      // Core Bluetooth
    case beacon   // Core Location (iBeacon region monitoring)
    case nfc      // Core NFC (tap-to-connect)

    var displayName: String {
        switch self {
        case .uwb:    return "Ultra-Wideband"
        case .ble:    return "Bluetooth"
        case .beacon: return "Beacon"
        case .nfc:    return "NFC"
        }
    }
}