adapter(cloudflare): removed durable mode, added withPlatformProxy (#233)

* removed `durable` mode as it requires an import from "cloudflare:" that often fails in non-cf environments

* remove worker configuration types

* add `withPlatformProxy`

* withPlatformProxy: make configuration optional

app/src/adapter/cloudflare/proxy.ts

@@ -0,0 +1,66 @@
+import {
+   d1Sqlite,
+   getBinding,
+   registerMedia,
+   type CloudflareBkndConfig,
+   type CloudflareEnv,
+} from ".";
+import type { PlatformProxy } from "wrangler";
+import process from "node:process";
+
+export type WithPlatformProxyOptions = {
+   /**
+    * By default, proxy is used if the PROXY environment variable is set to 1.
+    * You can override/force this by setting this option.
+    */
+   useProxy?: boolean;
+};
+
+export function withPlatformProxy<Env extends CloudflareEnv>(
+   config?: CloudflareBkndConfig<Env>,
+   opts?: WithPlatformProxyOptions,
+) {
+   const use_proxy =
+      typeof opts?.useProxy === "boolean" ? opts.useProxy : process.env.PROXY === "1";
+   let proxy: PlatformProxy | undefined;
+
+   async function getEnv(env?: Env): Promise<Env> {
+      if (use_proxy) {
+         if (!proxy) {
+            const getPlatformProxy = await import("wrangler").then((mod) => mod.getPlatformProxy);
+            proxy = await getPlatformProxy();
+            setTimeout(proxy?.dispose, 1000);
+         }
+         return proxy.env as unknown as Env;
+      }
+      return env || ({} as Env);
+   }
+
+   return {
+      ...config,
+      beforeBuild: async (app, registries) => {
+         if (!use_proxy) return;
+         const env = await getEnv();
+         registerMedia(env, registries);
+         await config?.beforeBuild?.(app, registries);
+      },
+      bindings: async (env) => {
+         return (await config?.bindings?.(await getEnv(env))) || {};
+      },
+      app: async (_env) => {
+         const env = await getEnv(_env);
+
+         if (config?.app === undefined && use_proxy) {
+            const binding = getBinding(env, "D1Database");
+            return {
+               connection: d1Sqlite({
+                  binding: binding.value,
+               }),
+            };
+         } else if (typeof config?.app === "function") {
+            return config?.app(env);
+         }
+         return config?.app || {};
+      },
+   } satisfies CloudflareBkndConfig<Env>;
+}