From c5f181ad5c9a486470a041ca66801389d583b96d Mon Sep 17 00:00:00 2001
From: XiaoMoMi <972454774@qq.com>
Date: Sat, 7 Oct 2023 15:30:30 +0800
Subject: [PATCH] add new api method

---
 .../api/mechanic/competition/Ranking.java         | 10 ++++++++++
 .../competition/ranking/LocalRankingImpl.java     | 15 +++++++++++++++
 .../competition/ranking/RedisRankingImpl.java     | 10 ++++++++++
 3 files changed, 35 insertions(+)

diff --git a/api/src/main/java/net/momirealms/customfishing/api/mechanic/competition/Ranking.java b/api/src/main/java/net/momirealms/customfishing/api/mechanic/competition/Ranking.java
index 59772026..728ac725 100644
--- a/api/src/main/java/net/momirealms/customfishing/api/mechanic/competition/Ranking.java
+++ b/api/src/main/java/net/momirealms/customfishing/api/mechanic/competition/Ranking.java
@@ -35,8 +35,18 @@ public interface Ranking {
      * @param player The name of the player to retrieve.
      * @return The CompetitionPlayer object if found, or null if not found.
      */
+    @Nullable
     CompetitionPlayer getCompetitionPlayer(String player);
 
+    /**
+     * Retrieves a competition player by rank.
+     *
+     * @param rank The rank of the player.
+     * @return The CompetitionPlayer object if found, or null if not found.
+     */
+    @Nullable
+    CompetitionPlayer getCompetitionPlayer(int rank);
+
     /**
      * Add a player to ranking
      *
diff --git a/plugin/src/main/java/net/momirealms/customfishing/mechanic/competition/ranking/LocalRankingImpl.java b/plugin/src/main/java/net/momirealms/customfishing/mechanic/competition/ranking/LocalRankingImpl.java
index 2fff1a47..c7905b8f 100644
--- a/plugin/src/main/java/net/momirealms/customfishing/mechanic/competition/ranking/LocalRankingImpl.java
+++ b/plugin/src/main/java/net/momirealms/customfishing/mechanic/competition/ranking/LocalRankingImpl.java
@@ -20,6 +20,7 @@ package net.momirealms.customfishing.mechanic.competition.ranking;
 import net.momirealms.customfishing.api.common.Pair;
 import net.momirealms.customfishing.api.mechanic.competition.CompetitionPlayer;
 import net.momirealms.customfishing.api.mechanic.competition.Ranking;
+import org.jetbrains.annotations.Nullable;
 
 import java.util.*;
 
@@ -87,6 +88,20 @@ public class LocalRankingImpl implements Ranking {
         return null;
     }
 
+    @Override
+    public CompetitionPlayer getCompetitionPlayer(int rank) {
+        int i = 1;
+        int size = getSize();
+        if (rank > size) return null;
+        for (CompetitionPlayer player : competitionPlayers) {
+            if (rank == i) {
+                return player;
+            }
+            i++;
+        }
+        return null;
+    }
+
     /**
      * Returns an iterator for iterating over pairs of player names and scores.
      *
diff --git a/plugin/src/main/java/net/momirealms/customfishing/mechanic/competition/ranking/RedisRankingImpl.java b/plugin/src/main/java/net/momirealms/customfishing/mechanic/competition/ranking/RedisRankingImpl.java
index acc80f8e..e8b628ea 100644
--- a/plugin/src/main/java/net/momirealms/customfishing/mechanic/competition/ranking/RedisRankingImpl.java
+++ b/plugin/src/main/java/net/momirealms/customfishing/mechanic/competition/ranking/RedisRankingImpl.java
@@ -21,6 +21,7 @@ import net.momirealms.customfishing.api.common.Pair;
 import net.momirealms.customfishing.api.mechanic.competition.CompetitionPlayer;
 import net.momirealms.customfishing.api.mechanic.competition.Ranking;
 import net.momirealms.customfishing.storage.method.database.nosql.RedisManager;
+import org.jetbrains.annotations.Nullable;
 import redis.clients.jedis.Jedis;
 import redis.clients.jedis.resps.Tuple;
 
@@ -54,6 +55,15 @@ public class RedisRankingImpl implements Ranking {
         }
     }
 
+    @Override
+    public CompetitionPlayer getCompetitionPlayer(int rank) {
+        try (Jedis jedis = RedisManager.getInstance().getJedis()) {
+            List<Tuple> player = jedis.zrevrangeWithScores("cf_competition", rank - 1, rank -1);
+            if (player == null || player.size() == 0) return null;
+            return new CompetitionPlayer(player.get(0).getElement(), player.get(0).getScore());
+        }
+    }
+
     @Override
     public void addPlayer(CompetitionPlayer competitionPlayer) {
         try (Jedis jedis = RedisManager.getInstance().getJedis()) {