sqldb: add UpsertSelfNode query

This query is less strict in terms of the latest update timestamp field.
We want to be less strict with our own node data since we always want
our own updates recorded.

sqldb/sqlc/graph.sql.go

@@ -3735,6 +3735,51 @@ func (q *Queries) UpsertPruneLogEntry(ctx context.Context, arg UpsertPruneLogEnt
 	return err
 }
 
+const upsertSourceNode = `-- name: UpsertSourceNode :one
+INSERT INTO graph_nodes (
+    version, pub_key, alias, last_update, color, signature
+) VALUES (
+    $1, $2, $3, $4, $5, $6
+)
+ON CONFLICT (pub_key, version)
+    -- Update the following fields if a conflict occurs on pub_key
+    -- and version.
+    DO UPDATE SET
+        alias = EXCLUDED.alias,
+        last_update = EXCLUDED.last_update,
+        color = EXCLUDED.color,
+        signature = EXCLUDED.signature
+WHERE graph_nodes.last_update IS NULL
+    OR EXCLUDED.last_update >= graph_nodes.last_update
+RETURNING id
+`
+
+type UpsertSourceNodeParams struct {
+	Version    int16
+	PubKey     []byte
+	Alias      sql.NullString
+	LastUpdate sql.NullInt64
+	Color      sql.NullString
+	Signature  []byte
+}
+
+// We use a separate upsert for our own node since we want to be less strict
+// about the last_update field. For our own node, we always want to
+// update the record even if the last_update is the same as what we have.
+func (q *Queries) UpsertSourceNode(ctx context.Context, arg UpsertSourceNodeParams) (int64, error) {
+	row := q.db.QueryRowContext(ctx, upsertSourceNode,
+		arg.Version,
+		arg.PubKey,
+		arg.Alias,
+		arg.LastUpdate,
+		arg.Color,
+		arg.Signature,
+	)
+	var id int64
+	err := row.Scan(&id)
+	return id, err
+}
+
 const upsertZombieChannel = `-- name: UpsertZombieChannel :exec
 /* ─────────────────────────────────────────────
    graph_zombie_channels table queries