Merge send reactions by kernel #1170

crates/notedeck/src/note/action.rs

@@ -14,6 +14,9 @@ pub enum NoteAction {
     /// User has clicked the quote reply action
     Reply(NoteId),
 
+    /// User has clicked the like/reaction button
+    React(ReactAction),
+
     /// User has clicked the repost button
     Repost(NoteId),
 
@@ -53,6 +56,18 @@ impl NoteAction {
     }
 }
 
+#[derive(Debug, Clone)]
+pub struct ReactAction {
+    pub note_id: NoteId,
+    pub content: &'static str,
+}
+
+impl ReactAction {
+    pub const fn new(note_id: NoteId, content: &'static str) -> Self {
+        Self { note_id, content }
+    }
+}
+
 #[derive(Debug, Eq, PartialEq, Clone)]
 pub enum ZapAction {
     Send(ZapTargetAmount),

crates/notedeck/src/note/mod.rs

@@ -1,7 +1,7 @@
 mod action;
 mod context;
 
-pub use action::{NoteAction, ScrollInfo, ZapAction, ZapTargetAmount};
+pub use action::{NoteAction, ReactAction, ScrollInfo, ZapAction, ZapTargetAmount};
 pub use context::{BroadcastContext, ContextSelection, NoteContextSelection};
 
 use crate::Accounts;
@@ -212,3 +212,9 @@ pub fn event_tag<'a>(ev: &nostrdb::Note<'a>, name: &str) -> Option<&'a str> {
         tag.get_str(1)
     })
 }
+
+/// Temporary way of checking whether a user has sent a reaction.
+/// Should be replaced with nostrdb metadata
+pub fn reaction_sent_id(sender_pk: &enostr::Pubkey, note_reacted_to: &[u8; 32]) -> egui::Id {
+    egui::Id::new(("sent-reaction-id", note_reacted_to, sender_pk))
+}

crates/notedeck_columns/src/actionbar.rs

@@ -12,11 +12,13 @@ use crate::{
 };
 
 use egui_nav::Percent;
-use enostr::{NoteId, Pubkey, RelayPool};
-use nostrdb::{Ndb, NoteKey, Transaction};
+use enostr::{FilledKeypair, NoteId, Pubkey, RelayPool};
+use nostrdb::{IngestMetadata, Ndb, NoteBuilder, NoteKey, Transaction};
 use notedeck::{
-    get_wallet_for, note::ZapTargetAmount, Accounts, GlobalWallet, Images, NoteAction, NoteCache,
-    NoteZapTargetOwned, UnknownIds, ZapAction, ZapTarget, ZappingError, Zaps,
+    get_wallet_for,
+    note::{reaction_sent_id, ReactAction, ZapTargetAmount},
+    Accounts, GlobalWallet, Images, NoteAction, NoteCache, NoteZapTargetOwned, UnknownIds,
+    ZapAction, ZapTarget, ZappingError, Zaps,
 };
 use notedeck_ui::media::MediaViewerFlags;
 use tracing::error;
@@ -76,6 +78,21 @@ fn execute_note_action(
                 router_action = Some(RouterAction::route_to(Route::accounts()));
             }
         }
+        NoteAction::React(react_action) => {
+            if let Some(filled) = accounts.selected_filled() {
+                if let Err(err) = send_reaction_event(ndb, txn, pool, filled, &react_action) {
+                    tracing::error!("Failed to send reaction: {err}");
+                }
+                ui.ctx().data_mut(|d| {
+                    d.insert_temp(
+                        reaction_sent_id(filled.pubkey, react_action.note_id.bytes()),
+                        true,
+                    )
+                });
+            } else {
+                router_action = Some(RouterAction::route_to(Route::accounts()));
+            }
+        }
         NoteAction::Profile(pubkey) => {
             let kind = TimelineKind::Profile(pubkey);
             router_action = Some(RouterAction::route_to(Route::Timeline(kind.clone())));
@@ -262,6 +279,94 @@ pub fn execute_and_process_note_action(
     resp.router_action
 }
 
+fn send_reaction_event(
+    ndb: &mut Ndb,
+    txn: &Transaction,
+    pool: &mut RelayPool,
+    kp: FilledKeypair<'_>,
+    reaction: &ReactAction,
+) -> Result<(), String> {
+    let Ok(note) = ndb.get_note_by_id(txn, reaction.note_id.bytes()) else {
+        return Err(format!("noteid {:?} not found in ndb", reaction.note_id));
+    };
+
+    let target_pubkey = Pubkey::new(*note.pubkey());
+    let relay_hint: Option<String> = note.relays(txn).next().map(|s| s.to_owned());
+    let target_kind = note.kind();
+    let d_tag_value = find_addressable_d_tag(&note);
+
+    let mut builder = NoteBuilder::new().kind(7).content(reaction.content);
+
+    builder = builder
+        .start_tag()
+        .tag_str("e")
+        .tag_id(reaction.note_id.bytes())
+        .tag_str(relay_hint.as_deref().unwrap_or(""))
+        .tag_str(&target_pubkey.hex());
+
+    builder = builder
+        .start_tag()
+        .tag_str("p")
+        .tag_id(target_pubkey.bytes());
+
+    if let Some(relay) = relay_hint.as_deref() {
+        builder = builder.tag_str(relay);
+    }
+
+    // we don't support addressable events yet... but why not future proof it?
+    if let Some(d_value) = d_tag_value.as_deref() {
+        let coordinates = format!("{}:{}:{}", target_kind, target_pubkey.hex(), d_value);
+
+        builder = builder.start_tag().tag_str("a").tag_str(&coordinates);
+
+        if let Some(relay) = relay_hint.as_deref() {
+            builder = builder.tag_str(relay);
+        }
+    }
+
+    builder = builder
+        .start_tag()
+        .tag_str("k")
+        .tag_str(&target_kind.to_string());
+
+    let note = builder
+        .sign(&kp.secret_key.secret_bytes())
+        .build()
+        .ok_or_else(|| "failed to build reaction event".to_owned())?;
+
+    let Ok(event) = &enostr::ClientMessage::event(&note) else {
+        return Err("failed to convert reaction note into client message".to_owned());
+    };
+
+    let Ok(json) = event.to_json() else {
+        return Err("failed to serialize reaction event to json".to_owned());
+    };
+
+    let _ = ndb.process_event_with(&json, IngestMetadata::new().client(true));
+
+    pool.send(event);
+
+    Ok(())
+}
+
+fn find_addressable_d_tag(note: &nostrdb::Note<'_>) -> Option<String> {
+    for tag in note.tags() {
+        if tag.count() < 2 {
+            continue;
+        }
+
+        if tag.get_unchecked(0).variant().str() != Some("d") {
+            continue;
+        }
+
+        if let Some(value) = tag.get_unchecked(1).variant().str() {
+            return Some(value.to_owned());
+        }
+    }
+
+    None
+}
+
 fn send_zap(
     sender: &Pubkey,
     zaps: &mut Zaps,

crates/notedeck_columns/src/ui/timeline.rs

@@ -7,7 +7,7 @@ use notedeck::fonts::get_font_size;
 use notedeck::name::get_display_name;
 use notedeck::ui::is_narrow;
 use notedeck::{tr_plural, JobsCache, Muted, NotedeckTextStyle};
-use notedeck_ui::app_images::{like_image, repost_image};
+use notedeck_ui::app_images::{like_image_filled, repost_image};
 use notedeck_ui::{ProfilePic, ProfilePreview};
 use std::f32::consts::PI;
 use tracing::{error, warn};
@@ -514,7 +514,7 @@ enum ReferencedNoteType {
 impl CompositeType {
     fn image(&self, darkmode: bool) -> egui::Image<'static> {
         match self {
-            CompositeType::Reaction => like_image(),
+            CompositeType::Reaction => like_image_filled(),
             CompositeType::Repost => {
                 repost_image(darkmode).tint(Color32::from_rgb(0x68, 0xC3, 0x51))
             }

crates/notedeck_ui/src/app_images.rs

@@ -253,6 +253,12 @@ pub fn zap_light_image() -> Image<'static> {
     zap_dark_image().tint(Color32::BLACK)
 }
 
+pub fn like_image_filled() -> Image<'static> {
+    Image::new(include_image!(
+        "../../../assets/icons/like_icon_filled_4x.png"
+    ))
+}
+
 pub fn like_image() -> Image<'static> {
     Image::new(include_image!("../../../assets/icons/like_icon_4x.png"))
 }

crates/notedeck_ui/src/note/mod.rs

@@ -10,7 +10,7 @@ use crate::{widgets::x_button, ProfilePic, ProfilePreview, PulseAlpha, Username}
 pub use contents::{render_note_preview, NoteContents};
 pub use context::NoteContextButton;
 use notedeck::get_current_wallet;
-use notedeck::note::ZapTargetAmount;
+use notedeck::note::{reaction_sent_id, ZapTargetAmount};
 use notedeck::ui::is_narrow;
 use notedeck::Accounts;
 use notedeck::GlobalWallet;
@@ -26,7 +26,7 @@ use egui::{Id, Pos2, Rect, Response, Sense};
 use enostr::{KeypairUnowned, NoteId, Pubkey};
 use nostrdb::{Ndb, Note, NoteKey, ProfileRecord, Transaction};
 use notedeck::{
-    note::{NoteAction, NoteContext, ZapAction},
+    note::{NoteAction, NoteContext, ReactAction, ZapAction},
     tr, AnyZapState, ContextSelection, NoteZapTarget, NoteZapTargetOwned, ZapTarget, Zaps,
 };
 
@@ -461,6 +461,7 @@ impl<'a, 'd> NoteView<'a, 'd> {
                             ),
                             self.note.id(),
                             self.note.pubkey(),
+                            self.note_context.accounts.selected_account_pubkey(),
                             note_key,
                             self.note_context.i18n,
                         )
@@ -549,6 +550,7 @@ impl<'a, 'd> NoteView<'a, 'd> {
                                 ),
                                 self.note.id(),
                                 self.note.pubkey(),
+                                self.note_context.accounts.selected_account_pubkey(),
                                 note_key,
                                 self.note_context.i18n,
                             )
@@ -848,6 +850,7 @@ fn render_note_actionbar(
     zapper: Option<Zapper<'_>>,
     note_id: &[u8; 32],
     note_pubkey: &[u8; 32],
+    current_user_pubkey: &Pubkey,
     note_key: NoteKey,
     i18n: &mut Localization,
 ) -> Option<NoteAction> {
@@ -859,6 +862,14 @@ fn render_note_actionbar(
     let reply_resp =
         reply_button(ui, i18n, note_key).on_hover_cursor(egui::CursorIcon::PointingHand);
 
+    let filled = ui
+        .ctx()
+        .data(|d| d.get_temp(reaction_sent_id(current_user_pubkey, note_id)))
+        == Some(true);
+
+    let like_resp =
+        like_button(ui, i18n, note_key, filled).on_hover_cursor(egui::CursorIcon::PointingHand);
+
     let quote_resp =
         quote_repost_button(ui, i18n, note_key).on_hover_cursor(egui::CursorIcon::PointingHand);
 
@@ -866,6 +877,13 @@ fn render_note_actionbar(
         action = Some(NoteAction::Reply(NoteId::new(*note_id)));
     }
 
+    if like_resp.clicked() {
+        action = Some(NoteAction::React(ReactAction::new(
+            NoteId::new(*note_id),
+            "🤙🏻",
+        )));
+    }
+
     if quote_resp.clicked() {
         action = Some(NoteAction::Repost(NoteId::new(*note_id)));
     }
@@ -918,6 +936,42 @@ fn reply_button(ui: &mut egui::Ui, i18n: &mut Localization, note_key: NoteKey) -
     resp.union(put_resp)
 }
 
+fn like_button(
+    ui: &mut egui::Ui,
+    i18n: &mut Localization,
+    note_key: NoteKey,
+    filled: bool,
+) -> egui::Response {
+    let img = {
+        let img = if filled {
+            app_images::like_image_filled()
+        } else {
+            app_images::like_image()
+        };
+
+        if ui.visuals().dark_mode {
+            img.tint(ui.visuals().text_color())
+        } else {
+            img
+        }
+    };
+
+    let (rect, size, resp) =
+        crate::anim::hover_expand_small(ui, ui.id().with(("like_anim", note_key)));
+
+    // align rect to note contents
+    let expand_size = 5.0; // from hover_expand_small
+    let rect = rect.translate(egui::vec2(-(expand_size / 2.0), 0.0));
+
+    let put_resp = ui.put(rect, img.max_width(size)).on_hover_text(tr!(
+        i18n,
+        "Like this note",
+        "Hover text for like button"
+    ));
+
+    resp.union(put_resp)
+}
+
 fn repost_icon(dark_mode: bool) -> egui::Image<'static> {
     if dark_mode {
         app_images::repost_dark_image()