#import <Foundation/Foundation.h>
#import <CoreBluetooth/CoreBluetooth.h>

// 全局 CBCentralManager 用于检查蓝牙状态
static CBCentralManager *centralManager = nil;

extern "C" {
    // 获取蓝牙状态
    // 0 = Unknown, 1 = Resetting, 2 = Unsupported, 3 = Unauthorized, 4 = PoweredOff, 5 = PoweredOn
    int GetBluetoothStateIOS() {
        if (centralManager == nil) {
            centralManager = [[CBCentralManager alloc] initWithDelegate:nil queue:nil options:@{CBCentralManagerOptionShowPowerAlertKey: @NO}];
        }
        
        switch (centralManager.state) {
            case CBManagerStateUnknown:
                return 0;
            case CBManagerStateResetting:
                return 1;
            case CBManagerStateUnsupported:
                return 2;
            case CBManagerStateUnauthorized:
                return 3;
            case CBManagerStatePoweredOff:
                return 4;
            case CBManagerStatePoweredOn:
                return 5;
            default:
                return 0;
        }
    }
    
    // 打开蓝牙设置页面
    void OpenBluetoothSettingsIOS() {
        // iOS 10+ 使用 UIApplicationOpenSettingsURLString
        NSURL *settingsURL = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
        if ([[UIApplication sharedApplication] canOpenURL:settingsURL]) {
            [[UIApplication sharedApplication] openURL:settingsURL options:@{} completionHandler:nil];
        }
    }
}