1 files changed, 183 insertions, 0 deletions
diff --git a/src/view/com/threadgate/WhoCanReply.tsx b/src/view/com/threadgate/WhoCanReply.tsx
new file mode 100644
index 000000000..1c34623d8
--- /dev/null
+++ b/src/view/com/threadgate/WhoCanReply.tsx
@@ -0,0 +1,183 @@
+import React from 'react'
+import {StyleProp, View, ViewStyle} from 'react-native'
+import {
+  AppBskyFeedDefs,
+  AppBskyFeedThreadgate,
+  AppBskyGraphDefs,
+  AtUri,
+} from '@atproto/api'
+import {Trans} from '@lingui/macro'
+import {usePalette} from '#/lib/hooks/usePalette'
+import {Text} from '../util/text/Text'
+import {TextLink} from '../util/Link'
+import {makeProfileLink, makeListLink} from '#/lib/routes/links'
+import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
+import {useColorSchemeStyle} from '#/lib/hooks/useColorSchemeStyle'
+import {useWebMediaQueries} from '#/lib/hooks/useWebMediaQueries'
+
+import {colors} from '#/lib/styles'
+
+export function WhoCanReply({
+  post,
+  style,
+}: {
+  post: AppBskyFeedDefs.PostView
+  style?: StyleProp<ViewStyle>
+}) {
+  const pal = usePalette('default')
+  const {isMobile} = useWebMediaQueries()
+  const containerStyles = useColorSchemeStyle(
+    {
+      borderColor: pal.colors.unreadNotifBorder,
+      backgroundColor: pal.colors.unreadNotifBg,
+    },
+    {
+      borderColor: pal.colors.unreadNotifBorder,
+      backgroundColor: pal.colors.unreadNotifBg,
+    },
+  )
+  const iconStyles = useColorSchemeStyle(
+    {
+      backgroundColor: colors.blue3,
+    },
+    {
+      backgroundColor: colors.blue3,
+    },
+  )
+  const textStyles = useColorSchemeStyle(
+    {color: colors.gray7},
+    {color: colors.blue1},
+  )
+  const record = React.useMemo(
+    () =>
+      post.threadgate &&
+      AppBskyFeedThreadgate.isRecord(post.threadgate.record) &&
+      AppBskyFeedThreadgate.validateRecord(post.threadgate.record).success
+        ? post.threadgate.record
+        : null,
+    [post],
+  )
+  if (record) {
+    return (
+      <View
+        style={[
+          {
+            flexDirection: 'row',
+            alignItems: 'center',
+            gap: isMobile ? 8 : 10,
+            paddingHorizontal: isMobile ? 16 : 18,
+            paddingVertical: 12,
+            borderWidth: 1,
+            borderLeftWidth: isMobile ? 0 : 1,
+            borderRightWidth: isMobile ? 0 : 1,
+          },
+          containerStyles,
+          style,
+        ]}>
+        <View
+          style={[
+            {
+              flexDirection: 'row',
+              alignItems: 'center',
+              justifyContent: 'center',
+              width: 32,
+              height: 32,
+              borderRadius: 19,
+            },
+            iconStyles,
+          ]}>
+          <FontAwesomeIcon
+            icon={['far', 'comments']}
+            size={16}
+            color={'#fff'}
+          />
+        </View>
+        <View style={{flex: 1}}>
+          <Text type="sm" style={[{flexWrap: 'wrap'}, textStyles]}>
+            {!record.allow?.length ? (
+              <Trans>Replies to this thread are disabled</Trans>
+            ) : (
+              <Trans>
+                Only{' '}
+                {record.allow.map((rule, i) => (
+                  <>
+                    <Rule
+                      key={`rule-${i}`}
+                      rule={rule}
+                      post={post}
+                      lists={post.threadgate!.lists}
+                    />
+                    <Separator
+                      key={`sep-${i}`}
+                      i={i}
+                      length={record.allow!.length}
+                    />
+                  </>
+                ))}{' '}
+                can reply.
+              </Trans>
+            )}
+          </Text>
+        </View>
+      </View>
+    )
+  }
+  return null
+}
+
+function Rule({
+  rule,
+  post,
+  lists,
+}: {
+  rule: any
+  post: AppBskyFeedDefs.PostView
+  lists: AppBskyGraphDefs.ListViewBasic[] | undefined
+}) {
+  const pal = usePalette('default')
+  if (AppBskyFeedThreadgate.isMentionRule(rule)) {
+    return <Trans>mentioned users</Trans>
+  }
+  if (AppBskyFeedThreadgate.isFollowingRule(rule)) {
+    return (
+      <Trans>
+        users followed by{' '}
+        <TextLink
+          href={makeProfileLink(post.author)}
+          text={`@${post.author.handle}`}
+          style={pal.link}
+        />
+      </Trans>
+    )
+  }
+  if (AppBskyFeedThreadgate.isListRule(rule)) {
+    const list = lists?.find(l => l.uri === rule.list)
+    if (list) {
+      const listUrip = new AtUri(list.uri)
+      return (
+        <Trans>
+          <TextLink
+            href={makeListLink(listUrip.hostname, listUrip.rkey)}
+            text={list.name}
+            style={pal.link}
+          />{' '}
+          members
+        </Trans>
+      )
+    }
+  }
+}
+
+function Separator({i, length}: {i: number; length: number}) {
+  if (length < 2 || i === length - 1) {
+    return null
+  }
+  if (i === length - 2) {
+    return (
+      <>
+        {length > 2 ? ',' : ''} <Trans>and</Trans>{' '}
+      </>
+    )
+  }
+  return <>, </>
+}