feat: add dashboard persistence store

src/lib/server/db/connection.ts

@@ -0,0 +1,47 @@
+import { mkdirSync } from "node:fs";
+import { dirname, resolve } from "node:path";
+import { Database } from "bun:sqlite";
+import { drizzle, type BunSQLiteDatabase } from "drizzle-orm/bun-sqlite";
+import { dashboardDbSchema } from "./schema";
+import { applyDashboardMigrations } from "./migrations";
+
+export const DEFAULT_DATABASE_URL = "file:./data/dimensionlab.sqlite";
+
+export type DashboardDatabase = BunSQLiteDatabase<typeof dashboardDbSchema> & {
+  $client: Database;
+};
+
+export interface DashboardDatabaseConnection {
+  db: DashboardDatabase;
+  sqlite: Database;
+  filename: string;
+  close(): void;
+}
+
+export function openDashboardDatabase(
+  databaseUrl = process.env.DATABASE_URL || DEFAULT_DATABASE_URL,
+): DashboardDatabaseConnection {
+  const filename = resolveSqliteFilename(databaseUrl);
+  mkdirSync(dirname(filename), { recursive: true });
+
+  const sqlite = new Database(filename, { create: true, readwrite: true });
+  const db = drizzle(sqlite, { schema: dashboardDbSchema }) as DashboardDatabase;
+  applyDashboardMigrations(db);
+
+  return {
+    db,
+    sqlite,
+    filename,
+    close() {
+      sqlite.close();
+    },
+  };
+}
+
+export function resolveSqliteFilename(databaseUrl: string): string {
+  if (!databaseUrl.startsWith("file:")) {
+    throw new Error(`Only file: SQLite DATABASE_URL values are supported: ${databaseUrl}`);
+  }
+
+  return resolve(databaseUrl.slice("file:".length));
+}