Starter Packs (#4332)

Co-authored-by: Dan Abramov <dan.abramov@gmail.com>
Co-authored-by: Paul Frazee <pfrazee@gmail.com>
Co-authored-by: Eric Bailey <git@esb.lol>
Co-authored-by: Samuel Newman <mozzius@protonmail.com>

src/lib/generate-starterpack.ts

@@ -0,0 +1,164 @@
+import {
+  AppBskyActorDefs,
+  AppBskyGraphGetStarterPack,
+  BskyAgent,
+  Facet,
+} from '@atproto/api'
+import {msg} from '@lingui/macro'
+import {useLingui} from '@lingui/react'
+import {useMutation} from '@tanstack/react-query'
+
+import {until} from 'lib/async/until'
+import {sanitizeDisplayName} from 'lib/strings/display-names'
+import {sanitizeHandle} from 'lib/strings/handles'
+import {enforceLen} from 'lib/strings/helpers'
+import {useAgent} from 'state/session'
+
+export const createStarterPackList = async ({
+  name,
+  description,
+  descriptionFacets,
+  profiles,
+  agent,
+}: {
+  name: string
+  description?: string
+  descriptionFacets?: Facet[]
+  profiles: AppBskyActorDefs.ProfileViewBasic[]
+  agent: BskyAgent
+}): Promise<{uri: string; cid: string}> => {
+  if (profiles.length === 0) throw new Error('No profiles given')
+
+  const list = await agent.app.bsky.graph.list.create(
+    {repo: agent.session!.did},
+    {
+      name,
+      description,
+      descriptionFacets,
+      avatar: undefined,
+      createdAt: new Date().toISOString(),
+      purpose: 'app.bsky.graph.defs#referencelist',
+    },
+  )
+  if (!list) throw new Error('List creation failed')
+  await agent.com.atproto.repo.applyWrites({
+    repo: agent.session!.did,
+    writes: [
+      createListItem({did: agent.session!.did, listUri: list.uri}),
+    ].concat(
+      profiles
+        // Ensure we don't have ourselves in this list twice
+        .filter(p => p.did !== agent.session!.did)
+        .map(p => createListItem({did: p.did, listUri: list.uri})),
+    ),
+  })
+
+  return list
+}
+
+export function useGenerateStarterPackMutation({
+  onSuccess,
+  onError,
+}: {
+  onSuccess: ({uri, cid}: {uri: string; cid: string}) => void
+  onError: (e: Error) => void
+}) {
+  const {_} = useLingui()
+  const agent = useAgent()
+  const starterPackString = _(msg`Starter Pack`)
+
+  return useMutation<{uri: string; cid: string}, Error, void>({
+    mutationFn: async () => {
+      let profile: AppBskyActorDefs.ProfileViewBasic | undefined
+      let profiles: AppBskyActorDefs.ProfileViewBasic[] | undefined
+
+      await Promise.all([
+        (async () => {
+          profile = (
+            await agent.app.bsky.actor.getProfile({
+              actor: agent.session!.did,
+            })
+          ).data
+        })(),
+        (async () => {
+          profiles = (
+            await agent.app.bsky.actor.searchActors({
+              q: encodeURIComponent('*'),
+              limit: 49,
+            })
+          ).data.actors.filter(p => p.viewer?.following)
+        })(),
+      ])
+
+      if (!profile || !profiles) {
+        throw new Error('ERROR_DATA')
+      }
+
+      // We include ourselves when we make the list
+      if (profiles.length < 7) {
+        throw new Error('NOT_ENOUGH_FOLLOWERS')
+      }
+
+      const displayName = enforceLen(
+        profile.displayName
+          ? sanitizeDisplayName(profile.displayName)
+          : `@${sanitizeHandle(profile.handle)}`,
+        25,
+        true,
+      )
+      const starterPackName = `${displayName}'s ${starterPackString}`
+
+      const list = await createStarterPackList({
+        name: starterPackName,
+        profiles,
+        agent,
+      })
+
+      return await agent.app.bsky.graph.starterpack.create(
+        {
+          repo: agent.session!.did,
+        },
+        {
+          name: starterPackName,
+          list: list.uri,
+          createdAt: new Date().toISOString(),
+        },
+      )
+    },
+    onSuccess: async data => {
+      await whenAppViewReady(agent, data.uri, v => {
+        return typeof v?.data.starterPack.uri === 'string'
+      })
+      onSuccess(data)
+    },
+    onError: error => {
+      onError(error)
+    },
+  })
+}
+
+function createListItem({did, listUri}: {did: string; listUri: string}) {
+  return {
+    $type: 'com.atproto.repo.applyWrites#create',
+    collection: 'app.bsky.graph.listitem',
+    value: {
+      $type: 'app.bsky.graph.listitem',
+      subject: did,
+      list: listUri,
+      createdAt: new Date().toISOString(),
+    },
+  }
+}
+
+async function whenAppViewReady(
+  agent: BskyAgent,
+  uri: string,
+  fn: (res?: AppBskyGraphGetStarterPack.Response) => boolean,
+) {
+  await until(
+    5, // 5 tries
+    1e3, // 1s delay between tries
+    fn,
+    () => agent.app.bsky.graph.getStarterPack({starterPack: uri}),
+  )
+}