//
//  WentingSDK.m
//  WentingSDK
//
//  Created by 吴博 on 2021/4/9.
//

#import "WentingSDK.h"
#import <UIKit/UIDevice.h>
#import "SSKeychain.h"

@implementation WentingSDK

+ (BOOL)isNullString:(NSString *)string {
    if ([string isEqual:@"NULL"]
        || [string isKindOfClass:[NSNull class]]
        || [string isEqual:[NSNull null]]
        || [string isEqual:NULL]
        || [[string class] isSubclassOfClass:[NSNull class]]
        || string == nil || string == NULL
        || [string isKindOfClass:[NSNull class]]
        || [[string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] length]==0
        || [string isEqualToString:@"<null>"]
        || [string isEqualToString:@"(null)"])
    {
        return YES;
    }
    return NO;
}

+(NSString *)GetUUID
{
    [SSKeychain setAccessibilityType:kSecAttrAccessibleWhenUnlocked];
    NSString* uuid = [SSKeychain passwordForService:@"UUIDs" account:@"UUID"];
    if ([self isNullString:uuid])
    {
        uuid = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
        [SSKeychain setPassword:uuid forService:@"UUIDs" account:@"UUID"];
    }
    return uuid;
}

@end