//
//  HDLTouchID.m
//  TDTouchID
//
//  Created by HDL on 2019/8/22.
//  Copyright © 2019 TuDou. All rights reserved.
//

#import "HDLTouchID.h"



@implementation HDLTouchID

+ (instancetype)sharedInstance {
    static HDLTouchID *instance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [[HDLTouchID alloc] init];
    });
    return instance;
}

- (void)HDL_showTouchIDWithDescribe:(NSString *)descTitle  mlocalizedReason:(NSString *)mlocalizedReason blockState:(StateBlock)block {
    
    if (NSFoundationVersionNumber < NSFoundationVersionNumber_iOS_8_0) {
        
        dispatch_async(dispatch_get_main_queue(), ^{
            NSLog(@"系统版本不支持TouchID（必须高于iOS 8.0才能使用）");
            block(HDLTouchIDStateVersionNotSupport, nil);
        });
        
        return;
    }
    
    
    LAContext *context = [[LAContext alloc] init];
    
    context.localizedFallbackTitle = descTitle == nil ? @"输入密码验证":descTitle;
    NSError *error = nil;
    
    if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) {
        [context evaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics localizedReason:mlocalizedReason == nil ? @"通过Home键验证已有指纹":mlocalizedReason reply:^(BOOL success, NSError * _Nullable error) {
            if (success) {
                dispatch_async(dispatch_get_main_queue(), ^{
                    NSLog(@"TouchID 验证成功");
                    block(HDLTouchIDStateSuccess, error);
                });
            } else if (error) {
                
                switch (error.code) {
                    case LAErrorAuthenticationFailed: {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"TouchID 验证失败");
                            block(HDLTouchIDStateFail, error);
                        });
                        break;
                    }
                    case LAErrorUserCancel: {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"TouchID 被用户手动取消");
                            block(HDLTouchIDStateUserCancel, error);
                        });
                    }
                        break;
                    case LAErrorUserFallback: {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"用户不使用TouchID，选择手动输入密码");
                            block(HDLTouchIDStateInputPassword, error);
                        });
                    }
                        break;
                    case LAErrorSystemCancel: {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"TouchID 被系统取消（如遇到来电,锁屏,按了Home键等）");
                            block(HDLTouchIDStateSystemCancel, error);
                        });
                    }
                        break;
                    case LAErrorPasscodeNotSet: {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"TouchID 无法启动，因为用户没有设置密码");
                            block(HDLTouchIDStatePasswordNotSet, error);
                        });
                    }
                        break;
                    case LAErrorTouchIDNotEnrolled: {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"TouchID 无法启动，因为用户没有设置TouchID");
                            block(HDLTouchIDStateTouchIDNotSet, error);
                        });
                    }
                        break;
                    case LAErrorTouchIDNotAvailable: {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"TouchID 无效");
                            block(HDLTouchIDStateTouchIDNotAvailable, error);
                        });
                    }
                        break;
                    case LAErrorTouchIDLockout: {
                        
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"TouchID 无效");
                            block(HDLTouchIDStateTouchIDLockout, error);
                        });
                        
                    }
                        break;
                    case LAErrorAppCancel: {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"当前软件被挂起并取消了授权（如App进入了后台等）");
                            block(HDLTouchIDStateAppCancel, error);
                        });
                    }
                        break;
                    case LAErrorInvalidContext: {
                        dispatch_async(dispatch_get_main_queue(), ^{
                            NSLog(@"当前软件被挂起并取消了授权（LAContext对象无效）");
                            block(HDLTouchIDStateInvalidContext, error);
                        });
                    }
                        break;
                    default:
                        break;
                }
            }
        }];
    } else {
//        [context evaluatePolicy:LAPolicyDeviceOwnerAuthentication localizedReason:@"用来验证指纹！" reply:^(BOOL success, NSError * _Nullable error) {
//            if (success) {
//                dispatch_async(dispatch_get_main_queue(), ^{
//                    block(HDLTouchIDStateSuccess,error);
//                });
//            } else {
//                dispatch_async(dispatch_get_main_queue(), ^{
//                    block(HDLTouchIDStateFail,error);
//                });
//            }
//        }];
        
        dispatch_async(dispatch_get_main_queue(), ^{
            NSLog(@"当前设备不支持TouchID");
            block(HDLTouchIDStateNotSupport,error);
        });
        
    }
}

- (void)HDL_showFaceIDWithDescribe:(NSString *)mlocalizedReason blockState:(faceIDStateBlock)block {
    NSError *error;
    
    LAContext *context = [[LAContext alloc] init];
    
    BOOL canAuthentication = [context canEvaluatePolicy:LAPolicyDeviceOwnerAuthentication error:&error];
    if (canAuthentication) {
        [context evaluatePolicy:LAPolicyDeviceOwnerAuthentication localizedReason:mlocalizedReason reply:^(BOOL success, NSError * _Nullable error) {
            //注意iOS 11.3之后需要配置Info.plist权限才可以通过Face ID验证哦!不然只能输密码啦...
            if (success) {
                dispatch_async(dispatch_get_main_queue(), ^{
                    block(HDLFaceIDStateSuccess,error);
                });
            } else {
                dispatch_async(dispatch_get_main_queue(), ^{
                    NSLog(@"当前软件被挂起并取消了授权（如App进入了后台等）");
                    block(HDLFaceIDStateFail,error);
                });
            }
        }];
    }
}


// 判断设备支持哪种认证方式 TouchID & FaceID
- (HDLTouchIDSupperType) HDL_canSupperBiometrics {
    LAContext *context = [[LAContext alloc] init];
    NSError *error;
    if ([context canEvaluatePolicy:LAPolicyDeviceOwnerAuthenticationWithBiometrics error:&error]) {
        if (error != nil) {
            return HDLTouchIDSupperTypeNone;
        }
        if (@available(iOS 11.0, *)) {
            return context.biometryType == LABiometryTypeFaceID ? HDLTouchIDSupperTypeFaceID : HDLTouchIDSupperTypeTouchID;
        }
    }
    return HDLTouchIDSupperTypeNone;
}


@end