add send via chat button to post dropdown

src/components/dms/dialogs/NewChatDialog.tsx

@@ -0,0 +1,67 @@
+import React, {useCallback} from 'react'
+import {msg} from '@lingui/macro'
+import {useLingui} from '@lingui/react'
+
+import {useGetConvoForMembers} from '#/state/queries/messages/get-convo-for-members'
+import {logEvent} from 'lib/statsig/statsig'
+import {FAB} from '#/view/com/util/fab/FAB'
+import * as Toast from '#/view/com/util/Toast'
+import {useTheme} from '#/alf'
+import * as Dialog from '#/components/Dialog'
+import {PlusLarge_Stroke2_Corner0_Rounded as Plus} from '#/components/icons/Plus'
+import {SearchablePeopleList} from './SearchablePeopleList'
+
+export function NewChat({
+  control,
+  onNewChat,
+}: {
+  control: Dialog.DialogControlProps
+  onNewChat: (chatId: string) => void
+}) {
+  const t = useTheme()
+  const {_} = useLingui()
+
+  const {mutate: createChat} = useGetConvoForMembers({
+    onSuccess: data => {
+      onNewChat(data.convo.id)
+
+      if (!data.convo.lastMessage) {
+        logEvent('chat:create', {logContext: 'NewChatDialog'})
+      }
+      logEvent('chat:open', {logContext: 'NewChatDialog'})
+    },
+    onError: error => {
+      Toast.show(error.message)
+    },
+  })
+
+  const onCreateChat = useCallback(
+    (did: string) => {
+      control.close(() => createChat([did]))
+    },
+    [control, createChat],
+  )
+
+  return (
+    <>
+      <FAB
+        testID="newChatFAB"
+        onPress={control.open}
+        icon={<Plus size="lg" fill={t.palette.white} />}
+        accessibilityRole="button"
+        accessibilityLabel={_(msg`New chat`)}
+        accessibilityHint=""
+      />
+
+      <Dialog.Outer
+        control={control}
+        testID="newChatDialog"
+        nativeOptions={{sheet: {snapPoints: ['100%']}}}>
+        <SearchablePeopleList
+          title={_(msg`Start a new chat`)}
+          onSelectChat={onCreateChat}
+        />
+      </Dialog.Outer>
+    </>
+  )
+}