feat: use D1 binding for local database

src/lib/server/db/index.ts

@@ -1,19 +1,12 @@
-import { env } from '$env/dynamic/private';
 import { getRequestEvent } from '$app/server';
-import { createClient, type Client } from '@libsql/client';
 import { drizzle as drizzleD1, type DrizzleD1Database } from 'drizzle-orm/d1';
-import { drizzle as drizzleLibSQL, type LibSQLDatabase } from 'drizzle-orm/libsql';
 import * as schema from './schema';
 
 type Schema = typeof schema;
-type LocalDatabase = LibSQLDatabase<Schema> & { $client: Client };
-type D1DatabaseClient = DrizzleD1Database<Schema> & { $client: D1Database };
 
-export type Database = LocalDatabase;
-export type RuntimeDatabase = LocalDatabase | D1DatabaseClient;
+export type Database = DrizzleD1Database<Schema> & { $client: D1Database };
 
-let localDb: LocalDatabase | undefined;
-const d1Databases = new WeakMap<D1Database, D1DatabaseClient>();
+const d1Databases = new WeakMap<D1Database, Database>();
 
 function getD1Binding() {
 	try {
@@ -23,17 +16,6 @@ function getD1Binding() {
 	}
 }
 
-function getLocalDb() {
-	if (localDb) return localDb;
-	if (!env.DATABASE_URL)
-		throw new Error('DATABASE_URL is not set and no Cloudflare D1 DB binding is available');
-
-	const client = createClient({ url: env.DATABASE_URL });
-	localDb = drizzleLibSQL(client, { schema });
-
-	return localDb;
-}
-
 function getD1Db(binding: D1Database) {
 	const cached = d1Databases.get(binding);
 	if (cached) return cached;
@@ -44,13 +26,11 @@ function getD1Db(binding: D1Database) {
 	return database;
 }
 
-export function getDb(): RuntimeDatabase {
-	if (env.DATABASE_URL) return getLocalDb();
-
+export function getDb(): Database {
 	const d1Binding = getD1Binding();
 	if (d1Binding) return getD1Db(d1Binding);
 
-	return getLocalDb();
+	throw new Error('Cloudflare D1 DB binding is not available');
 }
 
 export const db = new Proxy({} as Database, {