Add app package

packages/app/src/core.ts

@@ -0,0 +1,41 @@
+import {first} from "@welshman/lib"
+import {Repository, Relay} from "@welshman/util"
+import type {TrustedEvent} from "@welshman/util"
+import {Tracker, subscribe as baseSubscribe} from "@welshman/net"
+import type {SubscribeRequest} from "@welshman/net"
+import {createEventStore} from "@welshman/store"
+
+export const env: {
+  DUFFLEPUD_URL?: string
+} = {
+  DUFFLEPUD_URL: undefined,
+}
+
+export const repository = new Repository<TrustedEvent>()
+
+export const events = createEventStore(repository)
+
+export const relay = new Relay(repository)
+
+export const tracker = new Tracker()
+
+export const subscribe = (request: SubscribeRequest) => {
+  const sub = baseSubscribe({delay: 50, authTimeout: 3000, ...request})
+
+  sub.emitter.on("event", (url: string, e: TrustedEvent) => {
+    repository.publish(e)
+  })
+
+  return sub
+}
+
+export const load = (request: SubscribeRequest) =>
+  new Promise<TrustedEvent[]>(resolve => {
+    const sub = subscribe({closeOnEose: true, timeout: 3000, ...request})
+    const events: TrustedEvent[] = []
+
+    sub.emitter.on("event", (url: string, e: TrustedEvent) => events.push(e))
+    sub.emitter.on("complete", () => resolve(events))
+  })
+
+export const loadOne = async (request: SubscribeRequest) => first(await load(request))