//
//  DateUtil.m
//  FirstLink
//
//  Created by ascii on 15/7/20.
//  Copyright (c) 2015年 FirstLink. All rights reserved.
//

#import "DateUtil.h"

@implementation DateUtil

+ (NSString*)hourFromDateString:(NSString *)dateString {
    NSArray *compoments = [dateString componentsSeparatedByString:@"T"];
    if (compoments.count >=2) {
        NSArray *hourMinSecCompoments = [compoments[1] componentsSeparatedByString:@":"];
        if (hourMinSecCompoments.count >= 3) {
            NSString *hour = hourMinSecCompoments[0];
            NSString *minute = hourMinSecCompoments[1];
            return [NSString stringWithFormat:@"%@:%@", hour, minute];
        }
    }
    return nil;
}

+ (NSString*)dayFromDateString:(NSString *)dateString {
    NSArray *compoments = [dateString componentsSeparatedByString:@"T"];
    if (compoments.count >=2) {
        NSArray *yearMonthDayCompoments = [compoments[0] componentsSeparatedByString:@"-"];
        if (yearMonthDayCompoments.count >= 3) {
            return yearMonthDayCompoments[2];
        }
    }
    return nil;
}

+ (NSString*)enMonthFromDateString:(NSString *)dateString {
    NSArray *compoments = [dateString componentsSeparatedByString:@"T"];
    if (compoments.count >=2) {
        NSArray *yearMonthDayCompoments = [compoments[0] componentsSeparatedByString:@"-"];
        if (yearMonthDayCompoments.count >= 3) {
            NSString *month = yearMonthDayCompoments[1];
            
            NSDateFormatter *df = [[NSDateFormatter alloc] init];
            df.locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en"];
            NSString *enMonth = [[df monthSymbols] objectAtIndex:(month.intValue-1)];
            return [[enMonth uppercaseString] substringToIndex:3];
        }
    }
    return nil;
}

+ (NSString*)yearFromDateString:(NSString *)dateString {
    NSArray *compoments = [dateString componentsSeparatedByString:@"T"];
    if (compoments.count >=2) {
        NSArray *yearMonthDayCompoments = [compoments[0] componentsSeparatedByString:@"-"];
        if (yearMonthDayCompoments.count >= 3) {
            return yearMonthDayCompoments[0];
        }
    }
    return nil;
}

@end