Add support for blocked relays

packages/app/src/blockedRelayLists.ts

@@ -0,0 +1,42 @@
+import {BLOCKED_RELAYS, asDecryptedEvent, readList} from "@welshman/util"
+import {TrustedEvent} from "@welshman/util"
+import {
+  deriveItemsByKey,
+  deriveItems,
+  makeForceLoadItem,
+  makeLoadItem,
+  makeDeriveItem,
+  getter,
+} from "@welshman/store"
+import {repository} from "./core.js"
+import {makeOutboxLoader} from "./relayLists.js"
+
+export const blockedRelayListsByPubkey = deriveItemsByKey({
+  repository,
+  eventToItem: (event: TrustedEvent) => readList(asDecryptedEvent(event)),
+  filters: [{kinds: [BLOCKED_RELAYS]}],
+  getKey: blockedRelayLists => blockedRelayLists.event.pubkey,
+})
+
+export const blockedRelayLists = deriveItems(blockedRelayListsByPubkey)
+
+export const getBlockedRelayListsByPubkey = getter(blockedRelayListsByPubkey)
+
+export const getBlockedRelayLists = getter(blockedRelayLists)
+
+export const getBlockedRelayList = (pubkey: string) => getBlockedRelayListsByPubkey().get(pubkey)
+
+export const forceLoadBlockedRelayList = makeForceLoadItem(
+  makeOutboxLoader(BLOCKED_RELAYS),
+  getBlockedRelayList,
+)
+
+export const loadBlockedRelayList = makeLoadItem(
+  makeOutboxLoader(BLOCKED_RELAYS),
+  getBlockedRelayList,
+)
+
+export const deriveBlockedRelayList = makeDeriveItem(
+  blockedRelayListsByPubkey,
+  loadBlockedRelayList,
+)