import Foundation
import CoreBluetooth

/// Common protocol for all beacon provisioners
protocol BeaconProvisioner {
    /// Connect to the beacon and authenticate
    func connect() async throws

    /// Write the full beacon configuration
    func writeConfig(_ config: BeaconConfig) async throws

    /// Disconnect from the beacon
    func disconnect()

    /// Whether we're currently connected
    var isConnected: Bool { get }

    /// Optional diagnostic log for tracing provisioning steps
    var diagnosticLog: ProvisionLog? { get set }

    /// BLE manager reference for connection callbacks
    var bleManager: BLEManager? { get set }
}

/// GATT UUIDs shared across provisioner types
enum GATTConstants {
    // FFE0 service (KBeacon, DXSmart)
    static let ffe0Service = CBUUID(string: "0000FFE0-0000-1000-8000-00805F9B34FB")
    static let ffe1Char    = CBUUID(string: "0000FFE1-0000-1000-8000-00805F9B34FB")
    static let ffe2Char    = CBUUID(string: "0000FFE2-0000-1000-8000-00805F9B34FB")
    static let ffe3Char    = CBUUID(string: "0000FFE3-0000-1000-8000-00805F9B34FB")

    // FFF0 service (BlueCharm)
    static let fff0Service = CBUUID(string: "0000FFF0-0000-1000-8000-00805F9B34FB")
    static let fea0Service = CBUUID(string: "0000FEA0-0000-1000-8000-00805F9B34FB")

    // CCCD for enabling notifications
    static let cccd = CBUUID(string: "00002902-0000-1000-8000-00805F9B34FB")

    // Timeouts (matching Android)
    static let connectionTimeout: TimeInterval = 10.0   // Increased from 5s — BLE connections can be slow
    static let operationTimeout: TimeInterval = 5.0
    static let maxRetries = 3
    static let retryDelay: TimeInterval = 1.0
    static let postFlashDelay: TimeInterval = 3.0
}