Handled case for users with a lot of t1 not to get similar new_referr…

…ed_by for all of them, but distribute them more randomly.

go.mod

@@ -25,7 +25,7 @@ require (
 
 require (
 	cloud.google.com/go v0.112.0 // indirect
-	cloud.google.com/go/compute v1.23.4 // indirect
+	cloud.google.com/go/compute v1.24.0 // indirect
 	cloud.google.com/go/compute/metadata v0.2.3 // indirect
 	cloud.google.com/go/firestore v1.14.0 // indirect
 	cloud.google.com/go/iam v1.1.6 // indirect

go.sum

@@ -1,8 +1,8 @@
 cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 cloud.google.com/go v0.112.0 h1:tpFCD7hpHFlQ8yPwT3x+QeXqc2T6+n6T+hmABHfDUSM=
 cloud.google.com/go v0.112.0/go.mod h1:3jEEVwZ/MHU4djK5t5RHuKOA/GbLddgTdVubX1qnPD4=
-cloud.google.com/go/compute v1.23.4 h1:EBT9Nw4q3zyE7G45Wvv3MzolIrCJEuHys5muLY0wvAw=
-cloud.google.com/go/compute v1.23.4/go.mod h1:/EJMj55asU6kAFnuZET8zqgwgJ9FvXWXOkkfQZa4ioI=
+cloud.google.com/go/compute v1.24.0 h1:phWcR2eWzRJaL/kOiJwfFsPs4BaKq1j6vnpZrc1YlVg=
+cloud.google.com/go/compute v1.24.0/go.mod h1:kw1/T+h/+tK2LJK0wiPPx1intgdAM3j/g3hFDlscY40=
 cloud.google.com/go/compute/metadata v0.2.3 h1:mg4jlk7mCAj6xXp9UJ4fjI9VUI5rubuGBW5aJ7UnBMY=
 cloud.google.com/go/compute/metadata v0.2.3/go.mod h1:VAV5nSsACxMJvgaAuX6Pk2AawlZn8kiOGuCv6gTkwuA=
 cloud.google.com/go/firestore v1.14.0 h1:8aLcKnMPoldYU3YHgu4t2exrKhLQkqaXAGqT0ljrFVw=

users/users_delete.go

@@ -94,37 +94,38 @@ func (r *repository) updateReferredByForAllT1Referrals(ctx context.Context, user
 		return errors.Wrap(ctx.Err(), "context failed")
 	}
 	sql := `
-		WITH randomized AS (
-			SELECT id, referred_by, created_at FROM users
-			WHERE id != 'bogus'
+	WITH randomized AS (
+		SELECT id, referred_by, created_at, hash_code FROM users
+		WHERE id != 'bogus'
 			  AND id != 'icenetwork'
 			  AND username != id 
 			  AND referred_by != id 
 			  AND id != $1
 			  AND referred_by != $1
 			ORDER BY random()
-		)
-		SELECT (	SELECT X.ID 
-						FROM (	SELECT X.ID 
-									  FROM (
-										SELECT r.id
-										FROM randomized r
-										WHERE   r.id != u.id 
-												AND r.referred_by != u.id 								
-												AND r.created_at < u.created_at
-												LIMIT 1	
-									) X
-				
-									UNION ALL 
-									 
-									SELECT u.id AS ID
-								  ) X
-							LIMIT 1
-					   ) new_referred_by,
-					   u.ID as id
-				FROM users u
-				WHERE u.referred_by = $1
-				  AND u.id != $1`
+	)
+	SELECT (SELECT X.ID 
+					FROM (	SELECT X.ID
+								FROM (
+									SELECT r.id
+									FROM randomized r											
+									WHERE r.id != u.id
+										  AND r.referred_by != u.id
+										  AND r.created_at < u.created_at
+										  AND MOD(r.hash_code, (floor(random()*1000)+1)::bigint) = 0
+									LIMIT 1
+							) X
+		
+							UNION ALL 
+
+							SELECT u.id AS ID
+							) X
+					LIMIT 1
+				) new_referred_by,
+				u.ID as id
+		FROM users u
+		WHERE u.referred_by = $1
+			AND u.id != $1`
 	type resp struct {
 		NewReferredBy UserID
 		ID            UserID `db:"id"`