assistant-android/app/src/main/java/com/gh/common/util/TimestampUtils.java

package com.gh.common.util;

import android.text.TextUtils;

import com.gh.common.constant.Constants;
import com.gh.gamecenter.BuildConfig;
import com.halo.assistant.HaloApp;

import java.util.regex.Pattern;

import androidx.collection.ArrayMap;

public class TimestampUtils {

    // 基准时间
    private static final long BASE = 1426608000000L;

    private static ArrayMap<String, Integer> intervalMap; // 间隔
    private static ArrayMap<String, Integer> cdMap; // cd

    public static void initMap() {
        initIntervalMap();
        initCDMap();
    }

    private static void initIntervalMap() {
        intervalMap = new ArrayMap<>();
        intervalMap.put(".*index.*", 5);
        intervalMap.put(".*columns.*", 10);
        intervalMap.put(".*games.*", 15);
        intervalMap.put(".*articles.*", 20);
        intervalMap.put(".*halo_addons.*", 10);
        intervalMap.put(".*packages.*", 1);
    }

    private static void initCDMap() {
        cdMap = new ArrayMap<>();
        cdMap.put(".*index.*", Constants.GAME_CD);
        cdMap.put(".*columns.*", Constants.GAME_CD);
        cdMap.put(".*games.*", Constants.GAME_CD);
        cdMap.put(".*articles.*", Constants.NEWS_CD);
        cdMap.put(".*halo_addons.*", Constants.ADDONS_CD);
        cdMap.put(".*packages.*", Constants.PACKAGES_CD);
    }

    /*
     * 为url添加timestamp
     */
    public static String addTimestamp(String url) {

        if (BuildConfig.DEBUG || "GH_REFRESH".equals(HaloApp.getInstance().getChannel())) {
            if (TextUtils.isEmpty(url)) {
                return url;
            }
            if (url.contains("?")) {
                String u = url + "&timestamp=" + System.currentTimeMillis();
                return u;
            } else {
                String u = url + "?timestamp=" + System.currentTimeMillis();
                return u;
            }
        } else {
            if (TextUtils.isEmpty(url)) {
                return url;
            }
            int cd = 0;
            for (String key : getCdMap().keySet()) {
                if (Pattern.matches(key, url)) {
                    cd = getCdMap().get(key);
                    break;
                }
            }
            if (cd == 0) {
                return url;
            }
            if (url.contains("?")) {
                String u = url + "&timestamp=" + getTimestamp(url, cd);
//            Utils.log("url = " + u);
                return u;
            } else {
                String u = url + "?timestamp=" + getTimestamp(url, cd);
//            Utils.log("url = " + u);
                return u;
            }
        }
    }

    private static ArrayMap<String, Integer> getCdMap() {
        if (cdMap == null) {
            cdMap = new ArrayMap<>();
        }
        return cdMap;
    }

    /*
     * 根据CD获取时间戳
     */
    public static long getTimestamp(String url, int cd) {
        long base = BASE;
        for (String key : getIntervalMap().keySet()) {
            if (Pattern.matches(key, url)) {
//                Utils.log("url add base = " + url);
                base += getIntervalMap().get(key);
                break;
            }
        }
        long now = System.currentTimeMillis();
//        Utils.log("url now timestamp = " + now);
        return (long) (Math.ceil((now - base) / cd) * cd + base);
    }

    private static ArrayMap<String, Integer> getIntervalMap() {
        if (intervalMap == null) {
            intervalMap = new ArrayMap<>();
        }
        return intervalMap;
    }

    /*
     * 去除url中的timestamp
     */
    public static String removeTimestamp(String url) {
        if (!url.contains("timestamp")) return url;

        int index = url.lastIndexOf("timestamp");
        String params = url.substring(index);
        //连接符
        String connector = url.substring(index - 1, index);
        String key = url.substring(0, index - 1);
        index = params.indexOf("&");
        if (index != -1) {
            key = key + connector + params.substring(index + 1);
        }
        return key;
    }

}