feat(core,app): a history page

Every played episode, newest first, under Today, Yesterday, a weekday or a
date. A row shows the still (which plays it), the title (which opens it),
the episode, and where it stopped or that it was finished. Removing a row
resets that file to never played, with an Undo. History sits second in the
top bar, so Ctrl+1 to Ctrl+5 now run Library, History, Shares, Downloads,
Settings.

crates/pstr-app/Cargo.toml

@@ -31,6 +31,7 @@ parking_lot.workspace = true
 serde.workspace = true
 serde_json.workspace = true
 directories.workspace = true
+chrono.workspace = true
 souvlaki.workspace = true
 
 [target.'cfg(target_os = "linux")'.dependencies]

crates/pstr-app/src/app.rs

@@ -46,6 +46,7 @@ impl FrameTimer {
             started: std::time::Instant::now(),
             page: match page {
                 Page::Library => "library",
+                Page::History => "history",
                 Page::Title(_) => "title",
                 Page::Shares => "shares",
                 Page::Downloads => "downloads",
@@ -80,6 +81,8 @@ const UP_NEXT_SECONDS: f64 = 10.0;
 #[derive(Debug, Clone, PartialEq, Eq)]
 pub enum Page {
     Library,
+    /// Everything played, newest first.
+    History,
     /// One title, by [`pstr_core::library::Title::key`].
     Title(String),
     Shares,
@@ -91,6 +94,15 @@ pub enum Page {
     Player,
 }
 
+/// The pages in the top bar, in order. Ctrl+1 to Ctrl+5 go by position here.
+const NAV: [Page; 5] = [
+    Page::Library,
+    Page::History,
+    Page::Shares,
+    Page::Downloads,
+    Page::Settings,
+];
+
 /// Something a click asked for, applied once the frame is drawn.
 pub enum Action {
     Goto(Page),
@@ -177,6 +189,12 @@ pub enum Action {
         share_id: String,
         link_id: String,
     },
+    /// Take one file off the history page: forget its position and its
+    /// watched mark, with an Undo.
+    RemoveFromHistory {
+        share_id: String,
+        link_id: String,
+    },
     /// Put watch states back as they were — what Undo does.
     RestoreWatch(Vec<(String, String, pstr_core::catalog::WatchState)>),
     ClearStreamCache,
@@ -293,6 +311,8 @@ pub struct LibraryView {
     built_with: (Filter, Sort),
     /// Indices into [`Library::titles`].
     pub matches: Vec<usize>,
+    /// Every played episode, newest first, for the history page.
+    pub history: Vec<ui::history::Entry>,
     /// The "Continue watching" shelf, most recent first, as indices.
     pub resumable: Vec<usize>,
     /// The library changed under the lists.
@@ -366,6 +386,7 @@ impl LibraryView {
         self.matches = matches.into_iter().filter_map(index_of).collect();
         self.built_with = (self.filter, self.sort);
         if self.stale {
+            self.history = ui::history::entries(library);
             self.resumable = library
                 .continue_watching()
                 .into_iter()
@@ -1053,6 +1074,39 @@ impl App {
         self.engine.set_playback_prefs(prefs, commit);
     }
 
+    /// Reset one file to never played, with an Undo. What leaving Continue
+    /// watching and leaving the history both come down to: the two are read
+    /// off the same watch state.
+    fn forget_watch(
+        &mut self,
+        ctx: &egui::Context,
+        share_id: String,
+        link_id: String,
+        place: &str,
+    ) {
+        let found = self.library.titles.iter().find_map(|title| {
+            let episode = title.episodes().find(|episode| {
+                episode.node.share_id == share_id && episode.node.link_id == link_id
+            })?;
+            Some((title.name.clone(), episode.watch))
+        });
+        let Some((name, Some(before))) = found else {
+            return;
+        };
+        self.engine.save_watch_state(
+            share_id.clone(),
+            link_id.clone(),
+            watch_state(0.0, before.duration_secs, false),
+        );
+        let now = ctx.input(|input| input.time);
+        self.toasts.push_with(
+            now,
+            format!("removed {name} from {place}"),
+            "Undo",
+            Action::RestoreWatch(vec![(share_id, link_id, before)]),
+        );
+    }
+
     fn apply(&mut self, ctx: &egui::Context, action: Action) {
         match action {
             Action::Goto(page) => self.page = page,
@@ -1318,27 +1372,10 @@ impl App {
                 );
             }
             Action::ForgetPosition { share_id, link_id } => {
-                let found = self.library.titles.iter().find_map(|title| {
-                    let episode = title.episodes().find(|episode| {
-                        episode.node.share_id == share_id && episode.node.link_id == link_id
-                    })?;
-                    Some((title.name.clone(), episode.watch))
-                });
-                let Some((name, Some(before))) = found else {
-                    return;
-                };
-                self.engine.save_watch_state(
-                    share_id.clone(),
-                    link_id.clone(),
-                    watch_state(0.0, before.duration_secs, false),
-                );
-                let now = ctx.input(|input| input.time);
-                self.toasts.push_with(
-                    now,
-                    format!("removed {name} from Continue watching"),
-                    "Undo",
-                    Action::RestoreWatch(vec![(share_id, link_id, before)]),
-                );
+                self.forget_watch(ctx, share_id, link_id, "Continue watching");
+            }
+            Action::RemoveFromHistory { share_id, link_id } => {
+                self.forget_watch(ctx, share_id, link_id, "history");
             }
             Action::RestoreWatch(states) => {
                 for (share_id, link_id, state) in states {
@@ -1459,12 +1496,13 @@ impl App {
             } else {
                 format!("Downloads ({active})")
             };
-            let pages = [Page::Library, Page::Shares, Page::Downloads, Page::Settings];
+            let pages = NAV;
             let clicked = ui::tabs(
                 ui,
                 ui.id().with("nav"),
                 &[
                     ("Library", on_library),
+                    ("History", self.page == Page::History),
                     ("Shares", self.page == Page::Shares),
                     (&downloads, self.page == Page::Downloads),
                     ("Settings", self.page == Page::Settings),
@@ -1776,6 +1814,9 @@ impl eframe::App for App {
                             ui::settings::show(ui, settings, prefs, api_key, &mut actions)
                         }
                         Page::Downloads => ui::downloads::show(ui, downloads, &mut actions),
+                        Page::History => {
+                            ui::history::show(ui, &mut art, library, &view.history, &mut actions)
+                        }
                         // Drawn above, without any of these panels.
                         Page::Player => {}
                     }
@@ -2008,13 +2049,14 @@ fn global_shortcuts(ctx: &egui::Context, page: &Page, actions: &mut Vec<Action>)
             (Key::Num2, 1),
             (Key::Num3, 2),
             (Key::Num4, 3),
+            (Key::Num5, 4),
         ] {
             if input.consume_key(Modifiers::COMMAND, key) {
                 tab = Some(index);
             }
         }
         if input.consume_key(Modifiers::COMMAND, Key::Comma) {
-            tab = Some(3);
+            tab = Some(4);
         }
         // A share link pasted anywhere outside a text field is someone adding
         // a share, wherever they happen to be.
@@ -2029,7 +2071,7 @@ fn global_shortcuts(ctx: &egui::Context, page: &Page, actions: &mut Vec<Action>)
         }
     });
     if let Some(index) = tab {
-        let page = [Page::Library, Page::Shares, Page::Downloads, Page::Settings][index].clone();
+        let page = NAV[index].clone();
         actions.push(Action::Goto(page));
     }
 }

crates/pstr-app/src/ui/history.rs

@@ -0,0 +1,238 @@
+//! Everything that has been played, newest first, under a heading per day.
+//!
+//! Continue watching answers "what was I in the middle of"; this answers
+//! "what was that episode on Tuesday". It is read straight off the watch
+//! state, so there is nothing to keep in step: an episode is here because it
+//! has a position or is marked watched, and leaves when it has neither.
+
+use chrono::{DateTime, Local, NaiveDate, TimeZone};
+use pstr_core::library::{Episode, Library, Title, TitleKind};
+
+use crate::app::{Action, Page};
+use crate::theme;
+use crate::ui::{self, Art};
+
+const STILL: egui::Vec2 = egui::vec2(128.0, 72.0);
+/// How far back the page goes. Further than anyone scrolls; the cap is there
+/// so a library with years of history does not lay out every row of it.
+const MOST: usize = 400;
+
+/// Where one entry lives in [`Library::titles`]: title, season, episode.
+pub type Entry = (usize, usize, usize);
+
+/// The entries of `library.history()`, as positions, so they can be kept
+/// between frames and only rebuilt when the library changes.
+pub fn entries(library: &Library) -> Vec<Entry> {
+    let mut position = std::collections::HashMap::new();
+    for (t, title) in library.titles.iter().enumerate() {
+        for (s, season) in title.seasons.iter().enumerate() {
+            for (e, episode) in season.episodes.iter().enumerate() {
+                position.insert(std::ptr::from_ref(episode), (t, s, e));
+            }
+        }
+    }
+    library
+        .history()
+        .into_iter()
+        .filter_map(|(_, episode)| position.get(&std::ptr::from_ref(episode)).copied())
+        .collect()
+}
+
+pub fn show(
+    ui: &mut egui::Ui,
+    art: &mut Art<'_>,
+    library: &Library,
+    entries: &[Entry],
+    actions: &mut Vec<Action>,
+) {
+    if entries.is_empty() {
+        ui::empty_state(
+            ui,
+            "Nothing watched yet",
+            "Episodes and films you play show up here, newest first, so the one from \
+             last week is easy to find again.",
+        );
+        return;
+    }
+
+    let today = Local::now().date_naive();
+    egui::ScrollArea::vertical()
+        .auto_shrink([false, false])
+        .show(ui, |ui| {
+            ui.set_max_width(960.0);
+            let mut day = None;
+            for &(t, s, e) in entries.iter().take(MOST) {
+                let Some(title) = library.titles.get(t) else {
+                    continue;
+                };
+                let Some(episode) = title
+                    .seasons
+                    .get(s)
+                    .and_then(|season| season.episodes.get(e))
+                else {
+                    continue;
+                };
+                let Some(at) = Local.timestamp_opt(episode.last_played(), 0).single() else {
+                    continue;
+                };
+                if day != Some(at.date_naive()) {
+                    if day.is_some() {
+                        ui.add_space(theme::space::L);
+                    }
+                    day = Some(at.date_naive());
+                    ui::section(ui, &day_label(at.date_naive(), today));
+                }
+                row(ui, art, title, episode, at, actions);
+            }
+        });
+}
+
+fn row(
+    ui: &mut egui::Ui,
+    art: &mut Art<'_>,
+    title: &Title,
+    episode: &Episode,
+    at: DateTime<Local>,
+    actions: &mut Vec<Action>,
+) {
+    let row_id = ui.id().with(("history", &episode.node.link_id));
+    let frame = egui::Frame::new()
+        .corner_radius(egui::CornerRadius::same(theme::radius::LG))
+        .inner_margin(egui::Margin::same(8));
+    let mut prepared = frame.begin(ui);
+    {
+        let ui = &mut prepared.content_ui;
+        ui.set_width(ui.available_width());
+        ui.horizontal_top(|ui| {
+            ui::title::still(
+                ui,
+                art,
+                title,
+                episode,
+                episode.is_watched(),
+                STILL,
+                actions,
+            );
+            ui.add_space(theme::space::M);
+
+            let remove = 40.0;
+            let text_width = (ui.available_width() - remove).max(120.0);
+            ui.vertical(|ui| {
+                ui.set_width(text_width);
+                ui.spacing_mut().item_spacing.y = theme::space::XXS;
+                ui.add_space(theme::space::XS);
+                let name = ui
+                    .add(
+                        egui::Label::new(theme::Role::Body.rich(&title.name).color(theme::text()))
+                            .sense(egui::Sense::click())
+                            .truncate(),
+                    )
+                    .on_hover_cursor(egui::CursorIcon::PointingHand)
+                    .on_hover_text("Show this title");
+                if name.clicked() {
+                    actions.push(Action::Goto(Page::Title(title.key.clone())));
+                }
+                // A film's only "episode" is its file, and its filename says
+                // nothing the title above it does not.
+                if title.kind != TitleKind::Film {
+                    let episode_name = art
+                        .episode(&title.key, episode)
+                        .and_then(|found| found.name.clone())
+                        .unwrap_or_else(|| episode.detail().to_owned());
+                    let line = match episode.numbering() {
+                        Some(numbering) => format!("{numbering}  ·  {episode_name}"),
+                        None => episode_name,
+                    };
+                    ui.add(egui::Label::new(ui::muted(line)).truncate())
+                        .on_hover_text(&episode.node.name);
+                }
+                ui.label(ui::muted(status(episode, at)));
+            });
+
+            let cluster = egui::vec2(ui.available_width(), STILL.y);
+            let layout = egui::Layout::right_to_left(egui::Align::Center);
+            ui.allocate_ui_with_layout(cluster, layout, |ui| {
+                let remove = ui
+                    .add(
+                        egui::Button::new(
+                            theme::Role::Subhead
+                                .rich(egui_phosphor::regular::X)
+                                .color(theme::muted()),
+                        )
+                        .frame(false),
+                    )
+                    .on_hover_text(if episode.is_watched() {
+                        "Remove from history — marks it unwatched"
+                    } else {
+                        "Remove from history — forgets where you stopped"
+                    });
+                if remove.clicked() {
+                    actions.push(Action::RemoveFromHistory {
+                        share_id: episode.node.share_id.clone(),
+                        link_id: episode.node.link_id.clone(),
+                    });
+                }
+            });
+        });
+    }
+    let response = prepared.allocate_space(ui);
+    let lit =
+        ui.ctx()
+            .animate_bool_with_time(row_id, response.contains_pointer(), theme::motion::HOVER);
+    prepared.frame.fill = theme::card().gamma_multiply(0.35 + 0.65 * lit);
+    prepared.paint(ui);
+    ui.add_space(theme::space::XXS);
+}
+
+/// The grey line under the names: how far it got, and when.
+fn status(episode: &Episode, at: DateTime<Local>) -> String {
+    let when = at.format("%H:%M");
+    if episode.is_watched() {
+        return format!("Watched  ·  {when}");
+    }
+    match (
+        episode.resume_at(),
+        episode.watch.and_then(|watch| watch.duration_secs),
+    ) {
+        (Some(position), Some(duration)) => format!(
+            "Stopped at {} of {}  ·  {when}",
+            ui::format_time(position),
+            ui::format_time(duration)
+        ),
+        (Some(position), None) => format!("Stopped at {}  ·  {when}", ui::format_time(position)),
+        _ => format!("Played  ·  {when}"),
+    }
+}
+
+/// The heading over a day's entries: "Today", "Yesterday", a weekday within
+/// the last week, and a date before that — with the year only when it is not
+/// this one.
+fn day_label(day: NaiveDate, today: NaiveDate) -> String {
+    use chrono::Datelike;
+    match (today - day).num_days() {
+        0 => "Today".into(),
+        1 => "Yesterday".into(),
+        2..=6 => day.format("%A").to_string(),
+        _ if day.year() == today.year() => day.format("%-d %B").to_string(),
+        _ => day.format("%-d %B %Y").to_string(),
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    fn date(year: i32, month: u32, day: u32) -> NaiveDate {
+        NaiveDate::from_ymd_opt(year, month, day).unwrap()
+    }
+
+    #[test]
+    fn a_day_is_named_relative_to_today_for_the_last_week_and_dated_before_that() {
+        let today = date(2026, 10, 2);
+        assert_eq!(day_label(today, today), "Today");
+        assert_eq!(day_label(date(2026, 10, 1), today), "Yesterday");
+        assert_eq!(day_label(date(2026, 9, 28), today), "Monday");
+        assert_eq!(day_label(date(2026, 9, 25), today), "25 September");
+        assert_eq!(day_label(date(2025, 12, 24), today), "24 December 2025");
+    }
+}

crates/pstr-app/src/ui/mod.rs

@@ -4,6 +4,7 @@
 //! applies them after the frame is drawn.
 
 pub mod downloads;
+pub mod history;
 pub mod library;
 pub mod matcher;
 pub mod player;

crates/pstr-app/src/ui/shortcuts.rs

@@ -13,7 +13,10 @@ const GROUPS: &[(&str, &[(&str, &str)])] = &[
         &[
             ("Ctrl F  or  /", "Search the library"),
             ("F5  or  Ctrl R", "Crawl every share again"),
-            ("Ctrl 1 – 4", "Library, Shares, Downloads, Settings"),
+            (
+                "Ctrl 1 – 5",
+                "Library, History, Shares, Downloads, Settings",
+            ),
             ("Ctrl ,", "Settings"),
             ("Ctrl V", "Paste a share link to add it"),
             ("Tab  or  arrows", "Move between titles and episodes"),

crates/pstr-app/src/ui/title.rs

@@ -580,7 +580,7 @@ fn episode_row(
         let ui = &mut prepared.content_ui;
         ui.set_width(ui.available_width());
         ui.horizontal_top(|ui| {
-            still(ui, art, title, episode, watched, actions);
+            still(ui, art, title, episode, watched, STILL, actions);
             ui.add_space(theme::space::S);
 
             let controls = 96.0;
@@ -716,15 +716,16 @@ fn details(episode: &Episode, air_date: Option<&str>) -> String {
 /// An explicit target rather than a clickable row: the row also carries the
 /// watched mark and the download button, and a click that meant either of
 /// those must never be one that starts a 1.4 GiB stream instead.
-fn still(
+pub(crate) fn still(
     ui: &mut egui::Ui,
     art: &mut Art<'_>,
     title: &Title,
     episode: &Episode,
     watched: bool,
+    size: egui::Vec2,
     actions: &mut Vec<Action>,
 ) {
-    let (rect, response) = ui.allocate_exact_size(STILL, egui::Sense::click());
+    let (rect, response) = ui.allocate_exact_size(size, egui::Sense::click());
     if !ui.is_rect_visible(rect) {
         return;
     }