//
//  HttpManager.m
//  myhome
//
//  Created by hkh on 16/11/6.
//

#import "Sformat.h"


@interface Sformat (){
}


@end
@implementation Sformat{

}
+ (NSString *)yyyy_MM_dd{
    NSDate *now = [NSDate date]; 
    
    NSCalendar *calendar = [NSCalendar currentCalendar];
    NSUInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
    NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:now];
    
    int year = [dateComponent year];
    int month = [dateComponent month];
    int day = [dateComponent day];
    
    return [[NSString alloc] initWithFormat:@"%04d-%02d-%02d",year,month,day];
}
+ (long)timestamp{
    NSDate *now = [NSDate date];
    return [now timeIntervalSince1970]*1000;
}
+ (long)timestamp:(NSDate *)date{
    return [date timeIntervalSince1970]*1000;
}

+ (NSDate *)DateByTimestamp:(NSString *)timestamp{
    NSTimeInterval time = [timestamp floatValue] / 1000;
    return [NSDate dateWithTimeIntervalSince1970:time];
}

+ (NSString *)yyyy_MM_dd_HH_mm:(NSString *)timestamp{
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm"];
    return [dateFormatter stringFromDate:[self DateByTimestamp:timestamp]];
}
+ (NSString *)yyyy_MM_dd_HH_mm_cn:(NSString *)timestamp{
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    [dateFormatter setDateFormat:@"yyyy年MM月dd日 HH:mm"];
    return [dateFormatter stringFromDate:[self DateByTimestamp:timestamp]];
}

+ (NSDate *)dateWithYearsBeforeNow:(NSInteger)year{
    NSDate *currentDate = [NSDate date];
    NSCalendar *calendar = nil;
    if (FALSE) {//IOS8Higher
        calendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian];
    } else {
        calendar = [NSCalendar currentCalendar];
    }
    NSUInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
    NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:currentDate];
    [dateComponent setYear:year * -1];
    
    return [calendar dateFromComponents:dateComponent];
}
+ (NSDate *)dateWithMonthBeforeNow:(NSInteger)month{
    NSDate *currentDate = [NSDate date];
    NSCalendar *calendar = nil;
    //calendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian];
    calendar = [NSCalendar currentCalendar];
    NSUInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit ;
    NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:currentDate];
    [dateComponent setMonth:-1*month];
    
    return [calendar dateFromComponents:dateComponent];
}
+ (NSDate *)dateWithDayBeforeNow:(NSInteger)day{
    NSDate *currentDate = [NSDate date];
    NSCalendar *calendar = nil;
    if (FALSE) {//IOS8Higher
        calendar = [NSCalendar calendarWithIdentifier:NSCalendarIdentifierGregorian];
    } else {
        calendar = [NSCalendar currentCalendar];
    }
    NSUInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;
    NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:currentDate];
    [dateComponent setDay:-1*day];
    
    return [calendar dateFromComponents:dateComponent];
}

+ (NSString *)Hex:(NSData *)data {
    if (!data || [data length] == 0) {
        return @"";
        
    }
    
    NSMutableString *string = [[NSMutableString alloc] initWithCapacity:[data length]];
    
    [data enumerateByteRangesUsingBlock:^(const void *bytes, NSRange byteRange, BOOL *stop) {
        unsigned char *dataBytes = (unsigned char*)bytes;
        
        for (NSInteger i = 0; i < byteRange.length; i++) {
            NSString *hexStr = [NSString stringWithFormat:@"%x", (dataBytes[i]) & 0xff];
            
            if ([hexStr length] == 2) {
                [string appendString:hexStr];
                
            } else {
                [string appendFormat:@"0%@", hexStr];
                
            }
            if(i < byteRange.length-1){
                [string appendString:@" "];
            }
        }
        
    }];
    
    return string;
    
}
@end