//
//  NSString+Regex.m
//  YUMI
//
//  Created by YUMI on 2021/9/14.
//

#import "NSString+Utils.h"
#import <CommonCrypto/CommonDigest.h>
#import "LoginAreaModel.h"

@implementation NSString (Utils)

///是否是正确的手机号
- (BOOL)isPhoneNumber{
    NSString *regex =@"^((1[3-9][0-9])|(147)|(15[^4,\\D])|(18[0,5-9]))\\d{8}$";
    NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", regex];
    return [pred evaluateWithObject:self];
}

///MD5加密
- (NSString *)MD5String {
    const char *cstr = [self UTF8String];
    unsigned char result[16];
    CC_MD5(cstr, (CC_LONG)strlen(cstr), result);
    return [NSString stringWithFormat:
                @"%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
            result[0], result[1], result[2], result[3],
            result[4], result[5], result[6], result[7],
            result[8], result[9], result[10], result[11],
            result[12], result[13], result[14], result[15]
    ];
}

+ (BOOL)versionCompareOldStr:(NSString *)first andNewStr: (NSString *)second{
    if ([first compare:second options:NSNumericSearch] == NSOrderedAscending){
        return NO;
    }else if ([first compare:second options:NSNumericSearch] == NSOrderedSame){
        return YES;
    }else{
        return YES;
    }
}
+(NSString *)getDealTenNumWithString:(NSString *)string{
    if (string.floatValue < 100000) {
        return [NSString stringWithFormat:@"%@", string];
    }
    NSDecimalNumber *numberA = [NSDecimalNumber decimalNumberWithString:string];
    NSDecimalNumber *numberB =  [NSDecimalNumber decimalNumberWithString:@"1000"];
    //NSDecimalNumberBehaviors对象的创建  参数 1.RoundingMode 一个取舍枚举值 2.scale 处理范围 3.raiseOnExactness  精确出现异常是否抛出原因 4.raiseOnOverflow  上溢出是否抛出原因  4.raiseOnUnderflow  下溢出是否抛出原因  5.raiseOnDivideByZero  除以0是否抛出原因。
    NSDecimalNumberHandler *roundingBehavior = [NSDecimalNumberHandler decimalNumberHandlerWithRoundingMode:NSRoundDown scale:0 raiseOnExactness:NO raiseOnOverflow:NO raiseOnUnderflow:NO raiseOnDivideByZero:NO];
    /// 这里不仅包含Multiply还有加 减 乘。
    NSDecimalNumber *numResult = [numberA decimalNumberByDividingBy:numberB withBehavior:roundingBehavior];
    NSString *strResult = [numResult stringValue];
    return [NSString stringWithFormat:@"%@k", strResult];
}
///数字转化为万
+ (NSString *)getDealNumWithString:(NSString *)string{
    if (string.floatValue < 10000) {
        return [NSString stringWithFormat:@"%@", string];
    }
    NSDecimalNumber *numberA = [NSDecimalNumber decimalNumberWithString:string];
    NSDecimalNumber *numberB =  [NSDecimalNumber decimalNumberWithString:@"10000"];
    //NSDecimalNumberBehaviors对象的创建  参数 1.RoundingMode 一个取舍枚举值 2.scale 处理范围 3.raiseOnExactness  精确出现异常是否抛出原因 4.raiseOnOverflow  上溢出是否抛出原因  4.raiseOnUnderflow  下溢出是否抛出原因  5.raiseOnDivideByZero  除以0是否抛出原因。
    NSDecimalNumberHandler *roundingBehavior = [NSDecimalNumberHandler decimalNumberHandlerWithRoundingMode:NSRoundDown scale:2 raiseOnExactness:NO raiseOnOverflow:NO raiseOnUnderflow:NO raiseOnDivideByZero:NO];
    /// 这里不仅包含Multiply还有加 减 乘。
    NSDecimalNumber *numResult = [numberA decimalNumberByDividingBy:numberB withBehavior:roundingBehavior];
    NSString *strResult = [numResult stringValue];
    return [NSString stringWithFormat:YMLocalizedString(@"NSString_Utils4"), strResult];
}

+ (NSString *)formatNumberToKOrM:(NSString *)string {
    // 定义数值单位
    NSDecimalNumber *thousand = [NSDecimalNumber decimalNumberWithString:@"1000"];
    NSDecimalNumber *nine = [NSDecimalNumber decimalNumberWithString:@"9999"];
    NSDecimalNumber *million = [NSDecimalNumber decimalNumberWithString:@"1000000"];
    NSDecimalNumber *billion = [NSDecimalNumber decimalNumberWithString:@"1000000000"];
    NSDecimalNumber *trillion = [NSDecimalNumber decimalNumberWithString:@"1000000000000"];
    // 创建 NSDecimalNumber 对象
    NSDecimalNumber *number = [NSDecimalNumber decimalNumberWithString:string];

    // 判断数值范围并处理
    if ([number compare:nine] == NSOrderedAscending) {
        // 小于 10000，直接返回原始值
        return [NSString stringWithFormat:@"%@", string];
    } else if ([number compare:nine] != NSOrderedAscending && [number compare:million] == NSOrderedAscending) {
        // 10000 到 9999999，用K表示
        NSDecimalNumber *result = [number decimalNumberByDividingBy:thousand];
        return [self formatResult:result withUnit:@"K"];//[NSString stringWithFormat:@"%.1fK", result.doubleValue];
    } else if ([number compare:million] != NSOrderedAscending && [number compare:billion] == NSOrderedAscending) {
        // 超过 1000000，用M表示
        NSDecimalNumber *result = [number decimalNumberByDividingBy:million];
        return [self formatResult:result withUnit:@"M"];//[NSString stringWithFormat:@"%.1fM", result.doubleValue];
    }  else if ([number compare:billion] != NSOrderedAscending && [number compare:trillion] == NSOrderedAscending) {
        // 超过十亿，用 B 表示
        NSDecimalNumber *result = [number decimalNumberByDividingBy:billion];
        return [self formatResult:result withUnit:@"B"];
    } else {
        // 超过一万亿，可以继续增加更高单位
        NSDecimalNumber *result = [number decimalNumberByDividingBy:trillion];
        return [self formatResult:result withUnit:@"T"];  // T 表示万亿 (Trillion)
    }
}

+ (NSString *)formatNumberToKOrM_NoRounding:(NSString *)string {
    // 定义数值单位
    NSDecimalNumber *thousand = [NSDecimalNumber decimalNumberWithString:@"1000"];
    NSDecimalNumber *nine = [NSDecimalNumber decimalNumberWithString:@"9999"];
    NSDecimalNumber *million = [NSDecimalNumber decimalNumberWithString:@"1000000"];
    NSDecimalNumber *billion = [NSDecimalNumber decimalNumberWithString:@"1000000000"];
    NSDecimalNumber *trillion = [NSDecimalNumber decimalNumberWithString:@"1000000000000"];
    // 创建 NSDecimalNumber 对象
    NSDecimalNumber *number = [NSDecimalNumber decimalNumberWithString:string];

    // 判断数值范围并处理
    if ([number compare:nine] == NSOrderedAscending) {
        // 小于 10000，直接返回原始值
        return [NSString stringWithFormat:@"%@", string];
    } else if ([number compare:nine] != NSOrderedAscending && [number compare:million] == NSOrderedAscending) {
        // 10000 到 9999999，用K表示
        NSDecimalNumber *result = [number decimalNumberByDividingBy:thousand];
        return [self truncateDecimal:result withUnit:@"K"];
    } else if ([number compare:million] != NSOrderedAscending && [number compare:billion] == NSOrderedAscending) {
        // 超过 1000000，用M表示
        NSDecimalNumber *result = [number decimalNumberByDividingBy:million];
        return [self truncateDecimal:result withUnit:@"M"];
    } else if ([number compare:billion] != NSOrderedAscending && [number compare:trillion] == NSOrderedAscending) {
        // 超过十亿，用 B 表示
        NSDecimalNumber *result = [number decimalNumberByDividingBy:billion];
        return [self truncateDecimal:result withUnit:@"B"];
    } else {
        // 超过一万亿，可以继续增加更高单位
        NSDecimalNumber *result = [number decimalNumberByDividingBy:trillion];
        return [self truncateDecimal:result withUnit:@"T"];  // T 表示万亿 (Trillion)
    }
}

// 格式化并截断小数位
+ (NSString *)truncateDecimal:(NSDecimalNumber *)decimal withUnit:(NSString *)unit {
    // 获取字符串形式的结果，并截断到一位小数
    NSString *decimalString = decimal.stringValue;
    NSArray<NSString *> *components = [decimalString componentsSeparatedByString:@"."];
    NSString *integerPart = components.firstObject;
    NSString *decimalPart = components.count > 1 ? components[1] : @"";

    if (decimalPart.length > 1) {
        decimalPart = [decimalPart substringToIndex:1]; // 截断到一位小数
    }

    if (decimalPart.length == 0 || [decimalPart isEqualToString:@"0"]) {
        // 如果小数部分为空或为 0，只返回整数部分
        return [NSString stringWithFormat:@"%@%@", integerPart, unit];
    } else {
        // 返回截断后的结果
        return [NSString stringWithFormat:@"%@.%@%@", integerPart, decimalPart, unit];
    }
}


+ (NSString *)formatResult:(NSDecimalNumber *)result withUnit:(NSString *)unit {
    // 将 NSDecimalNumber 转为浮点数
    CGFloat floatValue = result.floatValue;

    // 格式化字符串，保留两位小数
    NSString *formattedString = [NSString stringWithFormat:@"%.2f", floatValue];

    // 移除多余的 .00 或 .0
    if ([formattedString hasSuffix:@".00"]) {
        formattedString = [formattedString substringToIndex:formattedString.length - 3]; // 移除 ".00"
    } else if ([formattedString hasSuffix:@".0"]) {
        formattedString = [formattedString substringToIndex:formattedString.length - 2]; // 移除 ".0"
    }

    return [NSString stringWithFormat:@"%@%@", formattedString, unit];
}

+ (NSString *)stringWithTimeStamp:(NSString *)timeStamp {
    // 转为秒为单位
    NSTimeInterval second = timeStamp.longLongValue / 1000;
    NSDate *date = [NSDate dateWithTimeIntervalSince1970:second];
    
    //把字符串转为NSdate
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
    // 时间 10点10分
    NSDateFormatter *timeFormatter = [[NSDateFormatter alloc] init];
    [timeFormatter setDateFormat:@"HH:mm"];
    // 日期 2月18号
    NSDateFormatter *dayFormatter = [[NSDateFormatter alloc] init];
    [dayFormatter setDateFormat:YMLocalizedString(@"NSString_Utils0")];
    // 日期 年月日
    NSDateFormatter *yearFormatter = [[NSDateFormatter alloc] init];
    [yearFormatter setDateFormat:YMLocalizedString(@"NSString_Utils1")];
    
    //得到与当前时间差
    NSTimeInterval timeInterval = [date timeIntervalSinceNow];
    timeInterval = -timeInterval;
    
    long temp = 0;
    NSString *result;
    
    BOOL isSameDay = [[NSCalendar currentCalendar] isDateInToday:date]; // 是否是同一天
    
    // A. 当天，且 timeInterval < 1分钟，显示“刚刚”；
    if (timeInterval < 60) {
        return [NSString stringWithFormat:@"%@", YMLocalizedString(@"NSString_Utils2")];
        
        // B. 当天，且1分钟≤ timeInterval <60分钟，显示“n分钟前”；
    } else if((temp = timeInterval/60) < 60){
        return [NSString stringWithFormat:YMLocalizedString(@"NSString_Utils3"),temp];
        
        // C. 当天，且n≥60分钟，显示“xx:xx”；
    } else if((temp = temp/60) < 24 && isSameDay){
        return [timeFormatter stringFromDate:date];
        
        // C. 非当天，且n≥60分钟，显示“xx:xx”；
    } else if((temp = temp/60) < 24 && !isSameDay){
        return [dayFormatter stringFromDate:date];
        
        // D. 跨天，且未跨年，显示“mm-dd”；
    } else if((temp = temp/30) < 30){
        return [dayFormatter stringFromDate:date];
        
    } else {
        // E. 跨年，显示“yyyy-mm-dd”；
        return [yearFormatter stringFromDate:date];
    }
    
    return result;
}

+ (NSString *)calculateConstellationWithMonth:(long)time
{
    NSString *astroString = YMLocalizedString(@"XPMineHeadView0");
    NSString *astroFormat = @"102123444543";
    NSString *result;
    
    NSInteger month = [NSString getMonth:time];
    NSInteger day = [NSString getDay:time];
    
    if (month<1 || month>12 || day<1 || day>31){
        return YMLocalizedString(@"XPMineHeadView1");
    }
    
    if(month==2 && day>29)
    {
        return YMLocalizedString(@"XPMineHeadView2");
    }else if(month==4 || month==6 || month==9 || month==11) {
        if (day>30) {
            return YMLocalizedString(@"XPMineHeadView3");
        }
    }
    
    result=[NSString stringWithFormat:@"%@",[astroString substringWithRange:NSMakeRange(month*2-(day < [[astroFormat substringWithRange:NSMakeRange((month-1), 1)] intValue] - (-19))*2,2)]];
    
    return [NSString stringWithFormat:YMLocalizedString(@"XPMineHeadView6"),result];
    
}
///通过生日获取星座图片
+ (NSString *)getCalculateConstellationImageWithMonth:(long)time{
    NSString *astroString = YMLocalizedString(@"XPMineHeadView0");
    NSString *astroFormat = @"102123444543";
    NSString *result;
    
    NSInteger month = [self getMonth:time];
    NSInteger day = [self getDay:time];
    
    if (month<1 || month>12 || day<1 || day>31){
        return @"";
    }
    
    if(month==2 && day>29)
    {
        return @"";
    }else if(month==4 || month==6 || month==9 || month==11) {
        if (day>30) {
            return @"";
        }
    }
    
    result=[NSString stringWithFormat:@"%@",[astroString substringWithRange:NSMakeRange(month*2-(day < [[astroFormat substringWithRange:NSMakeRange((month-1), 1)] intValue] - (-19))*2,2)]];
    NSDictionary *starDic = @{YMLocalizedString(@"XPMineHeadView9"):@"pi_capricorn",YMLocalizedString(@"XPMineHeadView10"):@"pi_water_bottle",YMLocalizedString(@"XPMineHeadView11"):@"pi_pisces",YMLocalizedString(@"XPMineHeadView12"):@"pi_aries",YMLocalizedString(@"XPMineHeadView13"):@"pi_taurus",YMLocalizedString(@"XPMineHeadView14"):@"pi_gemini",YMLocalizedString(@"XPMineHeadView15"):@"pi_cancer",YMLocalizedString(@"XPMineHeadView16"):@"pi_lion",YMLocalizedString(@"XPMineHeadView17"):@"pi_virgin",YMLocalizedString(@"XPMineHeadView18"):@"pi_libra",YMLocalizedString(@"XPMineHeadView19"):@"pi_scorpion",YMLocalizedString(@"XPMineHeadView20"):@"pi_shooter"};
    return starDic[result];
}
///通过生日获取星座
+ (NSString *)getCalculateConstellationTextWithMonth:(long)time{
    NSString *astroString = YMLocalizedString(@"XPMineHeadView0");
    NSString *astroFormat = @"102123444543";
    NSString *result;
    
    NSInteger month = [self getMonth:time];
    NSInteger day = [self getDay:time];
    
    if (month<1 || month>12 || day<1 || day>31){
        return @"";
    }
    
    if(month==2 && day>29)
    {
        return @"";
    }else if(month==4 || month==6 || month==9 || month==11) {
        if (day>30) {
            return @"";
        }
    }
    
    result=[NSString stringWithFormat:@"%@",[astroString substringWithRange:NSMakeRange(month*2-(day < [[astroFormat substringWithRange:NSMakeRange((month-1), 1)] intValue] - (-19))*2,2)]];
    return result;
}
+(NSInteger) getMonth:(long )time
{
    NSDate *date = [NSDate dateWithTimeIntervalSince1970:time/1000];
    NSCalendar* calendar = [NSCalendar currentCalendar];
    NSDateComponents* components = [calendar components:NSCalendarUnitMonth fromDate:date];
    NSInteger month = components.month;
    return month;
}

+ (NSInteger) getDay:(long) time
{
    NSDate *date = [NSDate dateWithTimeIntervalSince1970:time/1000];
    NSCalendar* calendar = [NSCalendar currentCalendar];
    NSDateComponents* components = [calendar components:NSCalendarUnitDay fromDate:date];
    NSInteger day = components.day;
    return day;
}
+(NSString *)getAgeWithBirth:(long)birth{
    if (birth == 0) {
        return @" ";
    }
    NSDateComponents *components1 = [[NSCalendar currentCalendar] components:NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear fromDate:[NSDate dateWithTimeIntervalSince1970:birth/1000]];
    NSInteger brithDateYear  = [components1 year];
    NSInteger brithDateDay   = [components1 day];
    NSInteger brithDateMonth = [components1 month];
    // 获取系统当前 年月日
    NSDateComponents *components2 = [[NSCalendar currentCalendar] components:NSCalendarUnitDay | NSCalendarUnitMonth | NSCalendarUnitYear fromDate:[NSDate date]];  NSInteger currentDateYear  = [components2 year];
    NSInteger currentDateDay   = [components2 day];  NSInteger currentDateMonth = [components2 month];  // 计算年龄
    NSInteger iAge = currentDateYear - brithDateYear - 1;
    if ((currentDateMonth > brithDateMonth) || (currentDateMonth == brithDateMonth && currentDateDay >= brithDateDay)) {
        iAge++;
    }
    return [NSString stringWithFormat:@" %ld ", iAge];
}
///得到区号
+(NSString *)getCountryCode{
    // 获取文件路径
    NSString *path = [[NSBundle mainBundle] pathForResource:@"pi_area_info" ofType:@"json"];
    // 将文件数据化
    NSData *data = [[NSData alloc] initWithContentsOfFile:path];
    // 对数据进行JSON格式化并返回字典形式
    NSError *error = nil;
    NSDictionary *codeData = [NSJSONSerialization JSONObjectWithData:data
                                                             options:NSJSONReadingMutableLeaves
                                                               error:&error];
    if (error) {
//        NSLog(@"JSON Parsing Error: %@", error.localizedDescription);
    }
    NSArray *codeList = [LoginAreaModel modelsWithArray:codeData[@"RECORDS"]];
    NSString *mccCode = [YYUtility getMobileCountryCode];
    NSString *countryCode = @"";
    
    if([mccCode isEqualToString:@"65535"]) {
        return @"+886";
    }

    for (LoginAreaModel *obj in codeList) {
        if([mccCode isEqualToString:obj.mcc]){
            countryCode = obj.code;
            break;
        }
    }

    if(countryCode.length == 0) {
        return @"+886";
    }

    return [NSString stringWithFormat:@"+%@",countryCode];
}
+(NSString *)createUUID{

    CFUUIDRef uuid;
    CFStringRef uuidText;
    uuid = CFUUIDCreate(NULL);
    uuidText = CFUUIDCreateString(NULL, uuid);
    NSString *time = [NSDate getNowTimeTimestamp];
    NSString *result = [NSString stringWithFormat:@"%@%@",uuidText,time];
    return [result MD5String];

}

+ (BOOL)isEmpty:(NSString *)string {
    if (string == nil || [string isKindOfClass:[NSNull class]]) {
        return YES;
    }
    NSString *trimmedString = [string stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]];
    return trimmedString.length == 0;
}

- (NSString *)pureURLString {
    NSString *encodingUrl = [self stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet characterSetWithCharactersInString:@"`#%^{}\"[]|\\<> "].invertedSet];
    return encodingUrl;//[self stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
//    NSURLComponents *components = [NSURLComponents componentsWithString:self];
//    components.query = [components.query stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]];
//    return components.string;
}

+ (NSString *)stringByRemovingRedundantZeros:(NSString *)string {
    // 1. 检查输入是否有效
    if (!string || string.length == 0) {
        return string;
    }
    
    // 2. 检查字符串是否包含小数点
    if ([string rangeOfString:@"."].location == NSNotFound) {
        return string; // 没有小数点，直接返回原始字符串
    }
    
    // 3. 使用NSDecimalNumber进行精确的数值处理
    NSDecimalNumber *decimalNumber = [NSDecimalNumber decimalNumberWithString:string];
    if ([decimalNumber isEqual:[NSDecimalNumber notANumber]]) {
        return string; // 转换失败，返回原始字符串
    }
    
    // 4. 设置四舍五入处理器，精确到小数点后2位
    NSDecimalNumberHandler *handler = [NSDecimalNumberHandler
                                      decimalNumberHandlerWithRoundingMode:NSRoundPlain
                                      scale:2
                                      raiseOnExactness:NO
                                      raiseOnOverflow:NO
                                      raiseOnUnderflow:NO
                                      raiseOnDivideByZero:NO];
    
    // 5. 执行四舍五入操作
    NSDecimalNumber *roundedNumber = [decimalNumber decimalNumberByRoundingAccordingToBehavior:handler];
    
    // 6. 将四舍五入后的数字转换为字符串
    NSString *formattedString = [roundedNumber stringValue];
    
    // 7. 分离整数部分和小数部分
    NSArray *components = [formattedString componentsSeparatedByString:@"."];
    NSString *integerPart = components[0];
    
    // 8. 如果没有小数部分，直接返回整数部分
    if (components.count < 2) {
        return integerPart;
    }
    
    NSString *fractionalPart = components[1];
    
    // 9. 如果小数部分为空，返回整数部分
    if (fractionalPart.length == 0) {
        return integerPart;
    }
    
    // 10. 移除小数部分末尾的0
    NSUInteger lastNonZeroIndex = NSNotFound;
    for (NSInteger i = fractionalPart.length - 1; i >= 0; i--) {
        if ([fractionalPart characterAtIndex:i] != '0') {
            lastNonZeroIndex = i;
            break;
        }
    }
    
    // 11. 如果小数部分全是0，返回整数部分
    if (lastNonZeroIndex == NSNotFound) {
        return integerPart;
    } else {
        // 12. 组合整数部分和修剪后的小数部分
        NSString *trimmedFraction = [fractionalPart substringToIndex:lastNonZeroIndex + 1];
        return [NSString stringWithFormat:@"%@.%@", integerPart, trimmedFraction];
    }
}

//+ (NSString *)stringByRemovingRedundantZeros:(NSString *)string {
//    if (![string containsString:@"."]) {
//        return string; // 不包含小數點，直接返回
//    }
//
//    // 將字串分割成整數部分和小數部分
//    NSArray *components = [string componentsSeparatedByString:@"."];
//    if (components.count > 2) {
//        return string; // 包含多個小數點，不處理直接返回 (或者您可以考慮拋出錯誤)
//    }
//
//    NSString *integerPart = components[0];
//    NSString *fractionalPart = components.count > 1 ? components[1] : @"";
//
//    if (fractionalPart.length == 0) {
//        return integerPart; // 沒有小數部分，直接返回整數部分
//    }
//
//    // 從後向前移除小數部分末尾的 0
//    NSInteger lastNonZeroIndex = -1;
//    for (NSInteger i = fractionalPart.length - 1; i >= 0; i--) {
//        if ([fractionalPart characterAtIndex:i] != '0') {
//            lastNonZeroIndex = i;
//            break;
//        }
//    }
//
//    if (lastNonZeroIndex == -1) {
//        return integerPart; // 小數部分全是 0，返回整數部分
//    } else {
//        // 截取到最後一個非零數字
//        NSString *trimmedFractionalPart = [fractionalPart substringToIndex:lastNonZeroIndex + 1];
//        return [NSString stringWithFormat:@"%@.%@", integerPart, trimmedFractionalPart];
//    }
//}

+ (NSString *)trimString:(NSString *)input lengthLimit:(NSInteger)limit {
    if (input.length <= limit) {
        return input;
    } else {
        NSString *trimmedString = [input substringToIndex:limit];
        return [trimmedString stringByAppendingString:@"..."];
    }
}

/// 判断 URL 是否为有效的图片格式
+ (BOOL)isValidImageURL:(NSString *)url {
    if ([NSString isEmpty:url]) {
        return NO;
    }
    
    NSString *lowercaseURL = url.lowercaseString;
    NSArray *imageExtensions = @[@"png", @"jpg", @"jpeg", @"gif", @"webp", @"bmp", @"svg"];
    
    for (NSString *extension in imageExtensions) {
        if ([lowercaseURL hasSuffix:extension]) {
            return YES;
        }
    }
    
    return NO;
}

/// 检查字符串是否为图片格式（通过扩展名判断）
+ (BOOL)isImageFormat:(NSString *)url {
    if ([NSString isEmpty:url]) {
        return NO;
    }
    
    NSString *lowercaseURL = url.lowercaseString;
    NSArray *imageExtensions = @[@".png", @".jpg", @".jpeg", @".gif", @".webp", @".bmp", @".svg"];
    
    for (NSString *extension in imageExtensions) {
        if ([lowercaseURL hasSuffix:extension]) {
            return YES;
        }
    }
    
    return NO;
}

@end