import Foundation
import CoreBluetooth

/// BLE服务常量
struct BleConst {
    // ================== 协议相关UUID ==================
    /// 主服务UUID - 0000ABC0-0000-1111-2222-123456789ABC
    static let PRIMARY_SERVICE_UUID = CBUUID(string: "0000abc0-0000-1111-2222-123456789abc")

    /// 音频服务UUID - 00001801-0000-1000-8000-00805f9b34fb
    static let AUDIO_SERVICE_UUID = CBUUID(string: "0000ae00-0000-1000-8000-00805f9b34fb")

    /// 接收音频特征UUID - 0000ABC1-0000-1111-2222-123456789ABC
    static let RECEIVE_AUDIO_CHAR_UUID = CBUUID(string: "0000ae02-0000-1000-8000-00805f9b34fb")
    
    /// 写入特征UUID - 0000ABC1-0000-1111-2222-123456789ABC
    static let WRITE_CHAR_UUID = CBUUID(string: "0000abc1-0000-1111-2222-123456789abc")
    
    /// 通知特征UUID - 0000ABC2-0000-1111-2222-123456789ABC
    static let NOTIFY_CHAR_UUID = CBUUID(string: "0000abc2-0000-1111-2222-123456789abc")
    
    /// 客户端特征配置描述符UUID
    static let CLIENT_CHAR_CONFIG_UUID = CBUUID(string: "0000fd7b-0000-1000-8000-00805f9b34fb")
    
    /// BLE扫描Action
    static let ACTION_SCAN_RESULT = "com.yunqiinnovation.ble_service.ACTION_BLE_SCAN"
    
    // ================== 连接状态 ==================
    static let STATE_DISCONNECTED = 0
    static let STATE_CONNECTING = 1
    static let STATE_CONNECTED = 2
    static let STATE_DISCONNECTING = 3
    static let STATE_ERROR = 4
    
    // ================== 广播厂商信息 ==================
    /// 厂商ID - 0xABEF
    static let MANUFACTURER_ID: UInt16 = 0xABEF
    /// 客户ID - 0xA001
    static let CUSTOMER_ID: UInt16 = 0xA001
    /// 产品ID - 0xA001
    static let PRODUCT_ID: UInt16 = 0xA001
    /// 蓝牙状态-未连接
    static let BT_STATE_DISCONNECTED: UInt8 = 0x00
    /// 蓝牙状态-已连接
    static let BT_STATE_CONNECTED: UInt8 = 0x0C
    
    // ================== 协议格式 ==================
    /// APP请求帧头
    static let APP_REQUEST_HEADER: UInt8 = 0xAA
    /// 设备响应帧头
    static let DEVICE_RESPONSE_HEADER: UInt8 = 0xBB
    /// 设备主动上报帧头
    static let DEVICE_NOTIFY_HEADER: UInt8 = 0xCC
    
    // ================== 协议指令 (CMD) ==================
    /// 获取耳机版本号
    static let CMD_GET_VERSION: UInt8 = 0x01
    /// 获取耳机产品ID
    static let CMD_GET_PRODUCT_ID: UInt8 = 0x02
    /// 获取耳机颜色ID
    static let CMD_GET_COLOR_ID: UInt8 = 0x03
    /// 获取耳机电量ID
    static let CMD_GET_BATTERY_INFO: UInt8 = 0x04
    /// APP控制编解码指令
    static let CMD_CONTROL_CODEC: UInt8 = 0x05
    /// 音量增大
    static let CMD_VOLUME_UP: UInt8 = 0x06
    /// 音量减小
    static let CMD_VOLUME_DOWN: UInt8 = 0x07
    /// A2DP播放
    static let CMD_PLAY_A2DP: UInt8 = 0x08
    /// 唤醒指令
    static let CMD_WAKE_UP: UInt8 = 0x11
    
    // ================== 编解码控制值 ==================
    /// 关闭编解码指令
    static let CODEC_CONTROL_CLOSE: UInt8 = 0x00
    /// 打开解码指令
    static let CODEC_CONTROL_DECODE_ON: UInt8 = 0xA1
    /// 通过A2DP播放
    static let CODEC_CONTROL_A2DP_PLAY: UInt8 = 0xA2
    /// 打开编码指令
    static let CODEC_CONTROL_ENCODE_ON: UInt8 = 0xB1
    /// 左声道
    static let AUDIO_CHANNEL_LEFT: UInt8 = 0x01
    /// 右声道
    static let AUDIO_CHANNEL_RIGHT: UInt8 = 0x02
    /// 立体声
    static let AUDIO_CHANNEL_STEREO: UInt8 = 0x03
}