feat(sqlserver): support linked server browsing

apps/desktop/src/lib/sqlServerLinkedServers.ts

@@ -0,0 +1,41 @@
+import type { TreeNode } from "@/types/database";
+
+const SQLSERVER_LINKED_SCHEMA_PREFIX = "__dbx_sqlserver_linked__:";
+
+export interface SqlServerLinkedSchemaRef {
+  server: string;
+  catalog: string;
+  schema: string;
+}
+
+export function encodeSqlServerLinkedSchema(ref: SqlServerLinkedSchemaRef): string {
+  return `${SQLSERVER_LINKED_SCHEMA_PREFIX}${[ref.server, ref.catalog, ref.schema].map(encodeURIComponent).join("|")}`;
+}
+
+export function parseSqlServerLinkedSchema(schema: string | undefined): SqlServerLinkedSchemaRef | null {
+  if (!schema?.startsWith(SQLSERVER_LINKED_SCHEMA_PREFIX)) return null;
+  const parts = schema.slice(SQLSERVER_LINKED_SCHEMA_PREFIX.length).split("|").map(decodeURIComponent);
+  if (parts.length !== 3 || parts.some((part) => !part.trim())) return null;
+  return { server: parts[0], catalog: parts[1], schema: parts[2] };
+}
+
+export function isSqlServerLinkedNode(node: Pick<TreeNode, "linkedServer" | "linkedCatalog" | "linkedSchema" | "schema">): boolean {
+  return !!node.linkedServer || !!node.linkedCatalog || !!node.linkedSchema || !!parseSqlServerLinkedSchema(node.schema);
+}
+
+export function sqlServerLinkedTableSchema(node: Pick<TreeNode, "linkedServer" | "linkedCatalog" | "linkedSchema">): string | undefined {
+  if (!node.linkedServer || !node.linkedCatalog || !node.linkedSchema) return undefined;
+  return encodeSqlServerLinkedSchema({
+    server: node.linkedServer,
+    catalog: node.linkedCatalog,
+    schema: node.linkedSchema,
+  });
+}
+
+export function quoteSqlServerIdentifier(name: string): string {
+  return `[${name.replace(/\]/g, "]]")}]`;
+}
+
+export function sqlServerLinkedTableName(ref: SqlServerLinkedSchemaRef, tableName: string): string {
+  return [ref.server, ref.catalog, ref.schema, tableName].map(quoteSqlServerIdentifier).join(".");
+}