Add some state management stuff

src/app/domain.ts

@@ -0,0 +1,22 @@
+import {stripProtocol} from "@welshman/lib"
+import type {TrustedEvent} from "@welshman/util"
+import {getIdentifier, normalizeRelayUrl} from "@welshman/util"
+
+export const GROUP_DELIMITER = `'`
+
+export const makeGroupId = (url: string, nom: string) =>
+  [stripProtocol(url), nom].join(GROUP_DELIMITER)
+
+export const getGroupNom = (e: TrustedEvent) => getIdentifier(e)?.split(GROUP_DELIMITER)[1]
+
+export const getGroupUrl = (e: TrustedEvent) => {
+  const id = getIdentifier(e)
+  const url = id?.split(GROUP_DELIMITER)[0]
+
+  return url ? normalizeRelayUrl(url) : null
+}
+
+export const getGroupName = (e: TrustedEvent | undefined) => e?.tags.find(t => t[0] === "name")?.[1]
+
+export const getGroupPicture = (e: TrustedEvent | undefined) =>
+  e?.tags.find(t => t[0] === "picture")?.[1]