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2026-07-12 15:55:18 +05:30
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+/**
+ * Resolve a `db` config (from wrnexus.config.ts) to a live SQL `Db`. Kept in a
+ * subpath (`@wrnexus/db/connect`) so importing the core `@wrnexus/db` doesn't pull
+ * in every adapter. MongoDB is not here — it uses a document API (`@wrnexus/db/mongo`).
+ */
+
+import { isAbsolute, join } from "node:path";
+import { createDb, type Db } from "./index.ts";
+import { sqlite } from "./adapters/sqlite.ts";
+import { postgres } from "./adapters/postgres.ts";
+import { mysql } from "./adapters/mysql.ts";
+
+export interface DbConfig {
+  driver: string;
+  url: string;
+}
+
+/** Resolve a `file:`/`sqlite:` URL's relative path against the app root. */
+export function resolveDbUrl(url: string, appRoot?: string): string {
+  const m = /^(?:file:|sqlite:\/\/|sqlite:)(.*)$/.exec(url);
+  if (!m || !appRoot) return url;
+  const path = m[1]!.replace(/^\.\//, "");
+  return `file:${isAbsolute(path) ? path : join(appRoot, path)}`;
+}
+
+/** Build the configured SQL database (resolving a file URL against `appRoot`). */
+export function connectFromConfig(config: DbConfig, appRoot?: string): Db {
+  const url = resolveDbUrl(config.url, appRoot);
+  switch (config.driver) {
+    case "sqlite":
+      return createDb(sqlite(url));
+    case "postgres":
+      return createDb(postgres(url));
+    case "mysql":
+      return createDb(mysql(url));
+    default:
+      throw new Error(
+        `Database driver '${config.driver}' is not a SQL driver ` +
+          `(use sqlite | postgres | mysql; MongoDB has a document API in @wrnexus/db/mongo).`,
+      );
+  }
+}