fix

internal/v2/db/client/interface.go

@@ -29,4 +29,7 @@ type V2DBClient interface {
 	IncrementFinalityProviderStats(
 		ctx context.Context, stakingTxHashHex string, fpPkHexes []string, amount uint64,
 	) error
+	SubtractFinalityProviderStats(
+		ctx context.Context, stakingTxHashHex string, fpPkHexes []string, amount uint64,
+	) error
 }

internal/v2/db/client/stats.go

@@ -339,6 +339,36 @@ func (v2dbclient *V2Database) IncrementFinalityProviderStats(
 	)
 }
 
+func (v2dbclient *V2Database) SubtractFinalityProviderStats(
+	ctx context.Context,
+	stakingTxHashHex string,
+	fpPkHexes []string,
+	amount uint64,
+) error {
+
+	// Create bulk write operations for each FP
+	var operations []mongo.WriteModel
+	for _, fpPkHex := range fpPkHexes {
+		operation := mongo.NewUpdateOneModel().
+			SetFilter(bson.M{"_id": fpPkHex}).
+			SetUpdate(bson.M{
+				"$inc": bson.M{
+					"active_tvl":         -int64(amount),
+					"active_delegations": -1,
+				},
+			}).
+			SetUpsert(true)
+		operations = append(operations, operation)
+	}
+
+	return v2dbclient.updateFinalityProviderStats(
+		ctx,
+		types.Unbonded.ToString(),
+		stakingTxHashHex,
+		operations,
+	)
+}
+
 func (v2dbclient *V2Database) updateFinalityProviderStats(
 	ctx context.Context,
 	state string,

internal/v2/service/stats.go

@@ -135,7 +135,20 @@ func (s *V2Service) ProcessStakingStatsCalculation(
 			}
 		}
 	case types.Unbonded:
-		// TODO: Add finality provider stats calculation
+		// Subtract from the finality stats
+		if !statsLockDocument.FinalityProviderStats {
+			err = s.DbClients.V2DBClient.SubtractFinalityProviderStats(
+				ctx, stakingTxHashHex, finalityProviderBtcPksHex, amount,
+			)
+			if err != nil {
+				if db.IsNotFoundError(err) {
+					return nil
+				}
+				log.Ctx(ctx).Error().Err(err).Str("stakingTxHashHex", stakingTxHashHex).
+					Msg("error while subtracting finality stats")
+				return types.NewInternalServiceError(err)
+			}
+		}
 
 		if !statsLockDocument.StakerStats {
 			err = s.DbClients.V2DBClient.SubtractStakerStats(