feat(ranking): 크리에이터 랭킹 점수 정책을 추가한다

src/main/kotlin/kr/co/vividnext/sodalive/v2/ranking/domain/CreatorRankingScorePolicy.kt

@@ -0,0 +1,49 @@
+package kr.co.vividnext.sodalive.v2.ranking.domain
+
+class CreatorRankingScorePolicy {
+    fun calculateContentLiveScore(
+        liveCanAmount: Long,
+        contentPurchaseCanAmount: Long
+    ): Double {
+        return (liveCanAmount * CreatorRankingScoreSpec.CONTENT_LIVE_CAN_WEIGHT) +
+            (contentPurchaseCanAmount * CreatorRankingScoreSpec.CONTENT_PURCHASE_CAN_WEIGHT)
+    }
+
+    fun calculateEngagementScore(
+        contentLikeCount: Long,
+        contentCommentCount: Long
+    ): Double {
+        return (contentLikeCount * CreatorRankingScoreSpec.CONTENT_LIKE_COUNT_WEIGHT) +
+            (contentCommentCount * CreatorRankingScoreSpec.CONTENT_COMMENT_COUNT_WEIGHT)
+    }
+
+    fun calculateSupportScore(
+        channelDonationCanAmount: Long,
+        channelDonationCount: Long,
+        fanTalkCount: Long
+    ): Double {
+        return (channelDonationCanAmount * CreatorRankingScoreSpec.CHANNEL_DONATION_CAN_WEIGHT) +
+            (channelDonationCount * CreatorRankingScoreSpec.CHANNEL_DONATION_COUNT_WEIGHT) +
+            (fanTalkCount * CreatorRankingScoreSpec.FAN_TALK_COUNT_WEIGHT)
+    }
+
+    fun calculateFanLoyaltyScore(
+        finalFollowerCount: Long,
+        followIncrease: Long
+    ): Double {
+        return (finalFollowerCount * CreatorRankingScoreSpec.FINAL_FOLLOWER_COUNT_WEIGHT) +
+            (followIncrease * CreatorRankingScoreSpec.FOLLOW_INCREASE_WEIGHT)
+    }
+
+    fun calculateFinalScore(
+        contentLiveScore: Double,
+        engagementScore: Double,
+        supportScore: Double,
+        fanLoyaltyScore: Double
+    ): Double {
+        return (contentLiveScore * CreatorRankingScoreSpec.CONTENT_LIVE_SCORE_WEIGHT) +
+            (engagementScore * CreatorRankingScoreSpec.ENGAGEMENT_SCORE_WEIGHT) +
+            (supportScore * CreatorRankingScoreSpec.SUPPORT_SCORE_WEIGHT) +
+            (fanLoyaltyScore * CreatorRankingScoreSpec.FAN_LOYALTY_SCORE_WEIGHT)
+    }
+}

src/main/kotlin/kr/co/vividnext/sodalive/v2/ranking/domain/CreatorRankingScoreSpec.kt

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+package kr.co.vividnext.sodalive.v2.ranking.domain
+
+object CreatorRankingScoreSpec {
+    const val CONTENT_LIVE_CAN_WEIGHT = 0.7
+    const val CONTENT_PURCHASE_CAN_WEIGHT = 0.3
+
+    const val CONTENT_LIKE_COUNT_WEIGHT = 0.5
+    const val CONTENT_COMMENT_COUNT_WEIGHT = 0.5
+
+    const val CHANNEL_DONATION_CAN_WEIGHT = 0.6
+    const val CHANNEL_DONATION_COUNT_WEIGHT = 0.2
+    const val FAN_TALK_COUNT_WEIGHT = 0.2
+
+    const val FINAL_FOLLOWER_COUNT_WEIGHT = 0.7
+    const val FOLLOW_INCREASE_WEIGHT = 0.3
+
+    const val CONTENT_LIVE_SCORE_WEIGHT = 0.35
+    const val ENGAGEMENT_SCORE_WEIGHT = 0.3
+    const val SUPPORT_SCORE_WEIGHT = 0.25
+    const val FAN_LOYALTY_SCORE_WEIGHT = 0.1
+}