1v1/MSYOUPAI/AlicomCaptcha/CaptchaCenter.m

#import "CaptchaCenter.h"


#define captchaID @"629e4f9060c50e8ec0c0ba2db0580db0"

@interface CaptchaCenter ()<AlicomCaptcha4SessionTaskDelegate>

@property (nonatomic, strong) AlicomCaptcha4Session *captchaSession;
@property (nonatomic, copy) void (^verifyBlock)(NSString *status, NSDictionary *result);

@end


@implementation CaptchaCenter

static id _instance;

+ (instancetype)defaultCenter {
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        _instance = [[self alloc] init];
    });
    return _instance;
}

- (instancetype)init {
    self = [super init];
    if (self) {
        [self captchaSession];
    }
    return self;
}

// 防止通过拷贝创建新实例
- (id)copyWithZone:(NSZone *)zone {
    return _instance;
}

// 防止通过归档创建新实例
- (id)mutableCopyWithZone:(NSZone *)zone {
    return _instance;
}


/// 获取验证码
- (void)getCaptchaType:(void(^)(NSNumber * _Nullable type, NSError * _Nullable error))completion {
    [LCHttpHelper requestWithURLString:GetCaptchaType parameters:@{} needToken:NO type:HttpRequestTypePost success:^(id responseObject) {
        NSDictionary* dict = (NSDictionary*)responseObject;
        NSInteger code = [[dict objectForKey:@"code"] integerValue];
        if (code == 0) {
            NSDictionary *dataDict = [dict objectForKey:@"data"];
            NSNumber *type = [dataDict objectForKey:@"type"];
            completion(type, nil);
        } else {
            NSError *error = [[NSError alloc] initWithDomain:NSCocoaErrorDomain code:123 userInfo:@{@"msg": @"服务端返回失败"}];
            completion(nil, error);
        }
    } failure:^(NSError *error) {
        completion(nil, error);
    }];
}


- (AlicomCaptcha4Session *)captchaSession {
    if (!_captchaSession) {
        _captchaSession = [AlicomCaptcha4Session sessionWithCaptchaID:captchaID];
        /// 如需修改默认配置
        /// 可选择下⾯注释的⽅式创建实例
        // AlicomCaptcha4SessionConfiguration *config = [AlicomCaptcha4SessionConfiguration defaultConfiguration];
        // config.timeout = 8.0f;
        // ...
        // _captchaSession = [AlicomCaptcha4Session sessionWithCaptchaID:captchaID configuration:config];
        _captchaSession.delegate = self;
    }
    return _captchaSession;
}

- (void)verifyCompletion:(void(^)(NSString *status, NSDictionary *result))completion {
    [self.captchaSession verify];
    self.verifyBlock = completion;
}


- (void)alicomCaptchaSession:(AlicomCaptcha4Session *)captchaSession didReceive:(NSString *)status result:(nullable NSDictionary *)result {
    NSLog(@"status: %@" , status);
    NSLog(@"result: %@" , result);
    // status 为 @"1"则为用户完成了验证,为@"0"则为用户验证失败
    self.verifyBlock(status, result);
}


- (void)alicomCaptchaSession:(AlicomCaptcha4Session *)captchaSession didReceiveError:(AlicomC4Error *)error {
    NSLog(@"error: %@", error.description);
}


@end