Get rid of domain module, allow app to override default event type

packages/util/src/List.ts

@@ -0,0 +1,49 @@
+import {parseJson, nth, nthEq} from "@welshman/lib"
+import {Address} from "./Address"
+import {isShareableRelayUrl} from "./Relay"
+import {Encryptable, DecryptedEvent} from "./Encryptable"
+
+export type ListParams = {
+  kind: number
+}
+
+export type List = ListParams & {
+  publicTags: string[][]
+  privateTags: string[][]
+  event?: DecryptedEvent
+}
+
+export type PublishedList = Omit<List, "event"> & {
+  event: DecryptedEvent
+}
+
+export const makeList = (list: ListParams & Partial<List>): List =>
+  ({publicTags: [], privateTags: [], ...list})
+
+const isValidTag = (tag: string[]) => {
+  if (tag[0] === "p") return tag[1]?.length === 64
+  if (tag[0] === "e") return tag[1]?.length === 64
+  if (tag[0] === "a") return Address.isAddress(tag[1] || "")
+  if (tag[0] === "t") return tag[1]?.length > 0
+  if (tag[0] === "r") return isShareableRelayUrl(tag[1])
+  if (tag[0] === "relay") return isShareableRelayUrl(tag[1])
+
+  return true
+}
+
+export const readList = (event: DecryptedEvent): PublishedList => {
+  const getTags = (tags: string[][]) => (Array.isArray(tags) ? tags.filter(isValidTag) : [])
+  const privateTags = getTags(parseJson(event.plaintext?.content))
+  const publicTags = getTags(event.tags)
+
+  return {event, kind: event.kind, publicTags, privateTags}
+}
+
+export const createList = ({kind, publicTags = [], privateTags = []}: List) =>
+  new Encryptable({kind, tags: publicTags}, {content: JSON.stringify(privateTags)})
+
+export const editList = ({kind, publicTags = [], privateTags = []}: PublishedList) =>
+  new Encryptable({kind, tags: publicTags}, {content: JSON.stringify(privateTags)})
+
+export const getListValues = (tagName: string, list: List | undefined) =>
+  [...list?.publicTags || [], ...list?.privateTags || []].filter(nthEq(0, tagName)).map(nth(1))