crates/community_ui/src/lib.rs

@@ -27,10 +27,9 @@ mod message;
 
 /// How near the top row a scroll has to come before the panel splices older history in.
 const LOAD_OLDER_THRESHOLD: usize = 20;
+/// A repeat message within this window keeps its run, so it carries no avatar or name.
+const RUN_WINDOW_MS: u64 = 300_000;
 
-/// Why a room is not showing the messages it knows about.
-///
-/// "No messages yet" is a claim, and a room we cannot read is not an empty one.
 #[derive(Debug, Clone, Copy, PartialEq, Eq)]
 enum Notice {
     Stranded,
@@ -59,23 +58,22 @@ impl fmt::Display for Notice {
             ),
             Notice::MissingKey(epoch) => write!(
                 formatter,
-                "Messages here can't be read yet — this channel's key for epoch {} is missing",
+                "Messages here can't be read yet, this channel's key for epoch {} is missing",
                 epoch.0
             ),
             Notice::Unreachable => formatter.write_str("Couldn't reach the community's relays"),
             Notice::Unreadable(1) => {
-                formatter.write_str("1 message here can't be read yet — no key we hold opens it")
+                formatter.write_str("1 message here can't be read yet, no key we hold opens it")
             }
             Notice::Unreadable(count) => write!(
                 formatter,
-                "{count} messages here can't be read yet — no key we hold opens them"
+                "{count} messages here can't be read yet, no key we hold opens them"
             ),
         }
     }
 }
 
 impl Notice {
-    /// Whether the room still accepts writes, rather than only being readable.
     fn writable(self) -> bool {
         matches!(self, Notice::Unreachable | Notice::Unreadable(_))
     }
@@ -653,6 +651,20 @@ impl CommunityPanel {
             .into_any_element()
     }
 
+    /// Whether the row at `index` opens a run from one author.
+    fn opens_run(&self, index: usize) -> bool {
+        let Some(current) = self.rows.get(index) else {
+            return true;
+        };
+
+        let Some(previous) = index.checked_sub(1).and_then(|index| self.rows.get(index)) else {
+            return true;
+        };
+
+        current.author != previous.author
+            || current.at_ms.saturating_sub(previous.at_ms) > RUN_WINDOW_MS
+    }
+
     fn render_message(
         &mut self,
         ix: usize,
@@ -667,7 +679,9 @@ impl CommunityPanel {
             return div().into_any_element();
         };
 
-        message::render(ix, message, cx)
+        let show_author = self.opens_run(ix - 1);
+
+        message::render(ix, message, show_author, cx)
     }
 
     fn render_composer(&self, cx: &mut Context<Self>) -> impl IntoElement {

crates/community_ui/src/message.rs

@@ -4,7 +4,7 @@ use common::TimestampExt;
 use community::ChatMessage;
 use gpui::prelude::FluentBuilder;
 use gpui::{
-    AnyElement, App, InteractiveElement, IntoElement, ParentElement, SharedString, Styled, div,
+    AnyElement, App, InteractiveElement, IntoElement, ParentElement, SharedString, Styled, div, px,
 };
 use nostr_sdk::prelude::*;
 use person::PersonRegistry;
@@ -13,7 +13,7 @@ use theme::ActiveTheme;
 use ui::avatar::Avatar;
 use ui::{StyledExt, h_flex, v_flex};
 
-pub(crate) fn render(ix: usize, message: &ChatMessage, cx: &App) -> AnyElement {
+pub(crate) fn render(ix: usize, message: &ChatMessage, show_author: bool, cx: &App) -> AnyElement {
     let persons = PersonRegistry::global(cx);
     let author = persons.read(cx).get(&message.author, cx);
     let hide_avatar = AppSettings::get_hide_avatar(cx);
@@ -29,35 +29,36 @@ pub(crate) fn render(ix: usize, message: &ChatMessage, cx: &App) -> AnyElement {
                 .items_start()
                 .gap_3()
                 .when(!hide_avatar, |this| {
-                    this.child(
-                        Avatar::new(author.avatar())
-                            .seed(author.avatar_seed())
-                            .flex_shrink_0(),
-                    )
+                    if show_author {
+                        this.child(
+                            Avatar::new(author.avatar())
+                                .seed(author.avatar_seed())
+                                .flex_shrink_0(),
+                        )
+                    } else {
+                        this.child(div().flex_shrink_0().w(px(32.)))
+                    }
                 })
                 .child(
                     v_flex()
                         .flex_1()
                         .min_w_0()
                         .gap_0p5()
-                        .child(
-                            h_flex()
-                                .gap_2()
-                                .text_sm()
-                                .child(div().font_semibold().child(author.name()))
-                                .child(
-                                    div()
-                                        .text_color(cx.theme().text_placeholder)
-                                        .child(Timestamp::from_secs(message.at_ms / 1000).to_ago()),
-                                )
-                                .when(message.edited_at.is_some(), |this| {
-                                    this.child(
-                                        div()
-                                            .text_color(cx.theme().text_placeholder)
-                                            .child("(edited)"),
+                        .when(show_author, |this| {
+                            this.child(
+                                h_flex()
+                                    .gap_2()
+                                    .text_sm()
+                                    .text_color(cx.theme().text_placeholder)
+                                    .child(div().font_semibold().child(author.name()))
+                                    .child(
+                                        Timestamp::from_secs(message.at_ms / 1000).to_human_time(),
                                     )
-                                }),
-                        )
+                                    .when(message.edited_at.is_some(), |this| {
+                                        this.child(div().child("(edited)"))
+                                    }),
+                            )
+                        })
                         .child(content(message, cx))
                         .when(!message.reactions.is_empty(), |this| {
                             this.child(reactions(message, cx))

crates/concord/src/cords/cord03.rs

@@ -129,7 +129,6 @@ pub fn build_message(
     build_rumor_ms(KIND_MESSAGE, author, content, tags, at_ms)
 }
 
-/// `parent` is the immediate parent; a `None` root means the parent is the thread's root.
 #[allow(clippy::too_many_arguments)]
 pub fn build_comment(
     author: PublicKey,
@@ -146,12 +145,14 @@ pub fn build_comment(
 
     tags.push(Tag::custom(TAG_ROOT_KIND, [root.kind.to_string()]));
     tags.push(reply_tag(TAG_ROOT, &root.reply));
+
     if let Some(root_author) = root.reply.author {
         tags.push(Tag::custom(TAG_ROOT_AUTHOR, [root_author.to_hex()]));
     }
 
     tags.push(Tag::custom(TAG_TARGET_KIND, [parent.kind.to_string()]));
     tags.push(reply_tag(TAG_TARGET, &parent.reply));
+
     if let Some(parent_author) = parent.reply.author {
         tags.push(Tag::custom(TAG_TARGET_AUTHOR, [parent_author.to_hex()]));
     }