import Foundation

/// Errors during beacon provisioning
enum ProvisionError: LocalizedError {
    case connectionTimeout
    case serviceDiscoveryTimeout
    case operationTimeout
    case serviceNotFound
    case characteristicNotFound
    case authFailed
    case notConnected
    case writeFailed(String)
    case saveFailed
    case verifyFailed

    var errorDescription: String? {
        switch self {
        case .connectionTimeout:       return "Connection timed out"
        case .serviceDiscoveryTimeout: return "Service discovery timed out"
        case .operationTimeout:        return "Operation timed out"
        case .serviceNotFound:         return "GATT service not found"
        case .characteristicNotFound:  return "GATT characteristic not found"
        case .authFailed:              return "Beacon authentication failed"
        case .notConnected:            return "Not connected to beacon"
        case .writeFailed(let msg):    return "Write failed: \(msg)"
        case .saveFailed:              return "Failed to save config to flash"
        case .verifyFailed:            return "Beacon broadcast verification failed"
        }
    }
}