[Add] 为Ranking命令增加翻页功能;

[Change] BotCommandProcess 为`ranking`方法增加`pageIndex`参数, 增加对起始排名的计算, 移除起始排名的固定值, 改按pageIndex计算;
[Fix] CacheStoreCentral 修复`getRankingInfoByCache`方法中潜在的排行榜返回错误的问题;
[Delete] PixivDownload 移除无用的两个方法;
[Change] PixivDownload 调整`@SuppressWarnings`注解的范围;

src/main/java/net/lamgc/cgj/bot/BotCommandProcess.java

@@ -143,8 +143,13 @@ public class BotCommandProcess {
             @Argument(force = false, name = "date") Date queryTime,
             @Argument(force = false, name = "force") boolean force,
             @Argument(force = false, name = "mode", defaultValue = "DAILY") String contentMode,
-            @Argument(force = false, name = "type", defaultValue = "ALL") String contentType
+            @Argument(force = false, name = "type", defaultValue = "ALL") String contentType,
+            @Argument(force = false, name = "p", defaultValue = "1") int pageIndex
     ) throws InterruptedException {
+        if(pageIndex <= 0) {
+            return "色图姬找不到指定页数的排行榜!";
+        }
+
         Date queryDate = queryTime;
         if (queryDate == null) {
             queryDate = new Date();
@@ -212,8 +217,10 @@ public class BotCommandProcess {
                 log.warn("配置项 {} 的参数值格式有误!", imageLimitPropertyKey);
             }
 
+            int startsIndex = itemLimit * pageIndex - (itemLimit - 1);
             List<JsonObject> rankingInfoList = CacheStoreCentral.getCentral()
-                    .getRankingInfoByCache(type, mode, queryDate, 1, Math.max(0, itemLimit), false);
+                    .getRankingInfoByCache(type, mode, queryDate,
+                            Math.max(1, startsIndex), Math.max(0, itemLimit), false);
             if(rankingInfoList.isEmpty()) {
                 return "无法查询排行榜，可能排行榜尚未更新。";
             }

src/main/java/net/lamgc/cgj/bot/cache/CacheStoreCentral.java

@@ -402,7 +402,7 @@ public final class CacheStoreCentral {
             result = rankingCache.getCache(requestSign, start - 1, range);
             log.trace("RequestSign [{}] 缓存命中.", requestSign);
         }
-        return PixivDownload.getRanking(result, start - 1, range);
+        return result;
     }
 
     /**

src/main/java/net/lamgc/cgj/pixiv/PixivDownload.java

@@ -4,7 +4,6 @@ import com.google.gson.Gson;
 import com.google.gson.JsonArray;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
-import com.google.gson.reflect.TypeToken;
 import io.netty.handler.codec.http.HttpHeaderNames;
 import net.lamgc.cgj.exception.HttpRequestException;
 import org.apache.http.Header;
@@ -32,7 +31,6 @@ import java.util.*;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.BiConsumer;
 
-@SuppressWarnings("ALL")
 public class PixivDownload {
 
     private final static Logger log = LoggerFactory.getLogger(PixivDownload.class);
@@ -249,43 +247,6 @@ public class PixivDownload {
         });
     }
 
-    /**
-     * 从JsonArray获取数据
-     * @param rankingList JsonArray对象
-     * @param rankStart 开始索引, 从0开始
-     * @param range 范围
-     * @return 返回List对象
-     */
-    public static List<JsonObject> getRanking(List<JsonObject> rankingList, int rankStart, int range) {
-        log.debug("正在读取JsonArray...(rankStart: {}, range: {})", rankStart, range);
-        ArrayList<JsonObject> results = new ArrayList<>(rankingList.size());
-        for (int rankIndex = rankStart; rankIndex < rankStart + range; rankIndex++) {
-            JsonElement jsonElement = rankingList.get(rankIndex - rankStart);
-            JsonObject rankInfo = jsonElement.getAsJsonObject();
-            int rank = rankInfo.get("rank").getAsInt();
-            int illustId = rankInfo.get("illust_id").getAsInt();
-            int authorId = rankInfo.get("user_id").getAsInt();
-            String authorName = rankInfo.get("user_name").getAsString();
-            String title = rankInfo.get("title").getAsString();
-            log.trace("Array-当前到第 {}/{} 名(总共 {} 名), IllustID: {}, Author: ({}) {}, Title: {}", rank, rankStart + range, range, illustId, authorId, authorName, title);
-            results.add(rankInfo);
-        }
-        log.debug("JsonArray读取完成.");
-        return results;
-    }
-
-    /**
-     * 从JsonArray获取数据
-     * @param rankingArray JsonArray对象
-     * @param rankStart 开始索引, 从0开始
-     * @param range 范围
-     * @return 返回List对象
-     */
-    public static List<JsonObject> getRanking(JsonArray rankingArray, int rankStart, int range) {
-        List<JsonObject> list = new Gson().fromJson(rankingArray, new TypeToken<List<JsonObject>>(){}.getType());
-        return getRanking(list, rankStart, range);
-    }
-
     /**
      * 获取排行榜.
      * <p>注意: 如果范围实际上没超出, 但返回排行榜不足, 会导致与实际请求的数量不符, 需要检查</p>
@@ -421,6 +382,7 @@ public class PixivDownload {
     /**
      * 插图质量
      */
+    @SuppressWarnings("unused")
     public enum PageQuality{
         /**
          * 原图画质