//
//  TimeTool.h
//  fastSign
//
//  Created by 朱潮 on 14-5-17.
//  Copyright (c) 2014年 zhuchao. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface TimeTool : NSObject
+ (TimeTool *)sharedInstance;

// 当前时间戳
+ (NSTimeInterval)formatTimeSinceNow:(NSTimeInterval)timestamp;
//根据timestamp来获取日期
+ (NSString *)formatTime:(NSTimeInterval)timestamp formatWith:(NSString *)format;
//根据date来获取日期
+ (NSString *)formatDate:(NSDate *)date formatWith:(NSString *)format;
//根据timestamp偏差来获取日期
+ (NSString *)formatDateSinceNow:(NSTimeInterval)timestamp formatWith:(NSString *)format;
//获取时间差
+ (NSString *)getTimeDiffString:(NSTimeInterval)timestamp;
+ (NSString *)formatFriendlyTime:(NSDate *)todate;

//格式化时间 e.p “从 2013-8-12 至 2013-8-18 "
+ (NSString *)getWeekKeyString:(NSTimeInterval)timestamp;
+ (NSString *)getFirstDayForWeekKeyString:(NSTimeInterval)timestamp;
//格式化时间 e.p 2013-08
+ (NSString *)getMonthKeyStringByOffset:(NSInteger)month;
+ (NSInteger)getTotalDayInMonth:(NSTimeInterval)timestamp;

//获取本星期的第一天的timestamp
+ (NSTimeInterval)getFirstDayOfWeek:(NSTimeInterval)timestamp;
//获取本月第一天的timestamp
+ (NSTimeInterval)getFirstDayOfMonth:(NSTimeInterval)timestamp;
//获取上月第一天的timestamp
+ (NSTimeInterval)getFirstDayOfLastMonth:(NSTimeInterval)timestamp;
//获取本季度第一天的timestamp
+ (NSTimeInterval)getFirstDayOfQuarter:(NSTimeInterval)timestamp;
@end