package com.mini.mybigscreen.utils;

import java.time.LocalDate;
import java.time.format.DateTimeFormatter;

public class DateUtils {
    private static final DateTimeFormatter MONTH_FORMATTER = DateTimeFormatter.ofPattern("MM");
    private static final DateTimeFormatter YEAR_FORMATTER = DateTimeFormatter.ofPattern("yyyy");
    private static final DateTimeFormatter DATE_FORMATTER = DateTimeFormatter.ofPattern("yyyyMMdd");
    private static final DateTimeFormatter YEAR_MONTH_CN_FORMATTER = DateTimeFormatter.ofPattern("yyyy年MM月");

    private static final DateTimeFormatter SHORT_YEAR_MONTH_CN_FORMATTER = DateTimeFormatter.ofPattern("yy年MM月");



    public static String dsValue() {
        LocalDate currentDate = LocalDate.now();
        return currentDate.format(DATE_FORMATTER);
    }

    public static String dsValueDaysAgo(long days) {
        LocalDate targetDate = LocalDate.now().minusDays(days);
        return targetDate.format(DATE_FORMATTER);
    }

    public static String getCurrentYear() {
        LocalDate currentDate = LocalDate.now();
        return currentDate.format(YEAR_FORMATTER);
    }

    public static String getCurrentMonth() {
        LocalDate currentDate = LocalDate.now();
        return currentDate.format(MONTH_FORMATTER);
    }

    public static String getCurrentYearMonthCN() {
        LocalDate currentDate = LocalDate.now();
        return currentDate.format(YEAR_MONTH_CN_FORMATTER);
    }

    public static String getCurrentShortYearMonthCN() {
        LocalDate currentDate = LocalDate.now();
        return currentDate.format(SHORT_YEAR_MONTH_CN_FORMATTER);
    }

    public static String getYear(LocalDate date) {
        return date.format(YEAR_FORMATTER);
    }

    public static String getMonth(LocalDate date) {
        return date.format(MONTH_FORMATTER);
    }
}