issue: Implement tui component for comments

Signed-off-by: Erik Kundt <[email protected]>

issue/src/tui/app.rs

@@ -15,12 +15,14 @@ use radicle_terminal_tui as tui;
 use tui::components::{ApplicationTitle, Shortcut, ShortcutBar, TabContainer};
 use tui::{App, Tui};
 
-use super::components::{GlobalListener, IssueList};
+use super::components::{CommentList, GlobalListener, IssueList};
 
 /// Messages handled by this tui-application.
 #[derive(Debug, Eq, PartialEq)]
 pub enum Message {
     TabChanged(usize),
+    EnterDetail(IssueId),
+    LeaveDetail,
     Quit,
 }
 
@@ -29,14 +31,21 @@ pub enum Message {
 pub enum Id {
     Global,
     Title,
-    Content,
+    Browser,
+    Detail,
     Shortcuts,
 }
 
-#[derive(Debug, Eq, PartialEq, Clone, Copy, Hash)]
-pub enum Group {
-    Open,
-    Closed,
+#[derive(Debug, Eq, PartialEq, Clone)]
+pub enum Mode {
+    Browser,
+    Detail,
+}
+
+impl Default for Mode {
+    fn default() -> Self {
+        Mode::Browser
+    }
 }
 
 #[derive(Default)]
@@ -45,13 +54,19 @@ pub struct IssueGroups {
     closed: Vec<(IssueId, Issue)>,
 }
 
+impl From<&IssueGroups> for Vec<(IssueId, Issue)> {
+    fn from(groups: &IssueGroups) -> Self {
+        [groups.open.clone(), groups.closed.clone()].concat()
+    }
+}
+
 /// App-window used by this application.
 #[derive(Default)]
 pub struct IssueTui {
     /// Issues currently displayed by this tui.
     issues: IssueGroups,
-    /// Current issue.
-    active: Option<(Group, IssueId)>,
+    /// Represents the active view
+    mode: Mode,
     /// True if application should quit.
     quit: bool,
 }
@@ -69,7 +84,7 @@ impl IssueTui {
 
         Self {
             issues: Self::group_issues(&issues),
-            active: None,
+            mode: Mode::Browser,
             quit: false,
         }
     }
@@ -139,15 +154,15 @@ impl Tui<Id, Message> for IssueTui {
     fn init(&mut self, app: &mut App<Id, Message>) -> Result<()> {
         app.mount(Id::Title, ApplicationTitle::new("my-project"), vec![])?;
         app.mount(
-            Id::Content,
+            Id::Browser,
             TabContainer::default()
                 .child(
                     format!("{} Open", self.issues.open.len()),
-                    IssueList::new(self.issues.open.clone(), Group::Open),
+                    IssueList::new(self.issues.open.clone()),
                 )
                 .child(
                     format!("{} Closed", self.issues.closed.len()),
-                    IssueList::new(self.issues.closed.clone(), Group::Closed),
+                    IssueList::new(self.issues.closed.clone()),
                 ),
             vec![
                 Sub::new(
@@ -174,6 +189,8 @@ impl Tui<Id, Message> for IssueTui {
             ],
         )?;
 
+        app.mount(Id::Detail, CommentList::<()>::new(vec![]), vec![])?;
+
         app.mount(
             Id::Shortcuts,
             ShortcutBar::default().child(Shortcut::new("q", "quit")),
@@ -193,23 +210,50 @@ impl Tui<Id, Message> for IssueTui {
         )?;
 
         // We need to give focus to a component then
-        app.activate(Id::Content)?;
+        app.activate(Id::Browser)?;
 
         Ok(())
     }
 
     fn view(&mut self, app: &mut App<Id, Message>, frame: &mut Frame) {
         let layout = Self::layout(app, frame);
 
-        app.view(Id::Title, frame, layout[0]);
-        app.view(Id::Content, frame, layout[1]);
+        match self.mode {
+            Mode::Browser => {
+                app.view(Id::Title, frame, layout[0]);
+                app.view(Id::Browser, frame, layout[1]);
+            }
+            Mode::Detail => {
+                app.view(Id::Detail, frame, layout[1]);
+            }
+        }
         app.view(Id::Shortcuts, frame, layout[2]);
     }
 
     fn update(&mut self, app: &mut App<Id, Message>) {
         for message in app.poll() {
             match message {
                 Message::Quit => self.quit = true,
+                Message::EnterDetail(issue_id) => {
+                    let issues = Vec::<(IssueId, Issue)>::from(&self.issues);
+                    if let Some((_, issue)) = issues.iter().find(|(id, _)| *id == issue_id) {
+                        let comments = issue
+                            .comments()
+                            .iter()
+                            .map(|comment| comment.clone())
+                            .collect::<Vec<_>>();
+
+                        self.mode = Mode::Detail;
+
+                        app.remount(Id::Detail, CommentList::new(comments), vec![])
+                            .ok();
+                        app.activate(Id::Detail).ok();
+                    }
+                }
+                Message::LeaveDetail => {
+                    self.mode = Mode::Browser;
+                    app.blur().ok();
+                }
                 _ => {}
             }
         }

issue/src/tui/components.rs

@@ -1,7 +1,10 @@
+use std::str::FromStr;
 use std::time::{Duration, SystemTime, UNIX_EPOCH};
 
 use timeago;
 
+use librad::collaborative_objects::ObjectId;
+
 use tui_realm_stdlib::Phantom;
 
 use tuirealm::command::{Cmd, CmdResult, Direction};
@@ -14,11 +17,11 @@ use tuirealm::tui::widgets::{List as TuiList, ListItem, ListState as TuiListStat
 use tuirealm::{Component, Frame, MockComponent, NoUserEvent, State, StateValue};
 
 use radicle_common::cobs::issue::*;
+use radicle_common::cobs::Comment;
 use radicle_terminal_tui as tui;
 use tui::components::{ApplicationTitle, ShortcutBar, TabContainer};
 use tui::state::ListState;
 
-use super::app::Group;
 use super::app::Message;
 
 /// Since `terminal-tui` does not know the type of messages that are being
@@ -64,6 +67,20 @@ impl Component<Message, NoUserEvent> for TabContainer {
                     _ => None,
                 }
             }
+            Event::Keyboard(KeyEvent {
+                code: Key::Enter, ..
+            }) => match self.perform(Cmd::Submit) {
+                CmdResult::Batch(batch) => batch.iter().fold(None, |_, result| match result {
+                    CmdResult::Submit(State::One(StateValue::String(id))) => {
+                        match ObjectId::from_str(&id) {
+                            Ok(id) => Some(Message::EnterDetail(id)),
+                            Err(_) => None,
+                        }
+                    }
+                    _ => None,
+                }),
+                _ => None,
+            },
             Event::Keyboard(KeyEvent { code: Key::Up, .. }) => {
                 self.perform(Cmd::Move(Direction::Up));
                 None
@@ -80,16 +97,14 @@ impl Component<Message, NoUserEvent> for TabContainer {
 }
 
 pub struct IssueList {
-    props: Props,
-    group: Group,
+    attributes: Props,
     issues: ListState<(IssueId, Issue)>,
 }
 
 impl IssueList {
-    pub fn new(issues: Vec<(IssueId, Issue)>, group: Group) -> Self {
+    pub fn new(issues: Vec<(IssueId, Issue)>) -> Self {
         Self {
-            props: Props::default(),
-            group: group,
+            attributes: Props::default(),
             issues: ListState::new(issues),
         }
     }
@@ -150,11 +165,11 @@ impl MockComponent for IssueList {
     }
 
     fn query(&self, attr: Attribute) -> Option<AttrValue> {
-        self.props.get(attr)
+        self.attributes.get(attr)
     }
 
     fn attr(&mut self, attr: Attribute, value: AttrValue) {
-        self.props.set(attr, value);
+        self.attributes.set(attr, value);
     }
 
     fn state(&self) -> State {
@@ -165,18 +180,113 @@ impl MockComponent for IssueList {
         match cmd {
             Cmd::Move(Direction::Up) => {
                 self.issues.select_previous();
+                let selected = self.issues.items().selected_index();
+                CmdResult::Changed(State::One(StateValue::Usize(selected)))
             }
             Cmd::Move(Direction::Down) => {
                 self.issues.select_next();
+                let selected = self.issues.items().selected_index();
+                CmdResult::Changed(State::One(StateValue::Usize(selected)))
             }
-            _ => {}
+            Cmd::Submit => {
+                let (id, _) = self.issues.items().selected().unwrap();
+                CmdResult::Submit(State::One(StateValue::String(id.to_string())))
+            }
+            _ => CmdResult::None,
         }
-        CmdResult::None
     }
 }
 
 impl Component<Message, NoUserEvent> for IssueList {
-    fn on(&mut self, ev: Event<NoUserEvent>) -> Option<Message> {
+    fn on(&mut self, _event: Event<NoUserEvent>) -> Option<Message> {
         None
     }
 }
+
+pub struct CommentList<R> {
+    attributes: Props,
+    comments: ListState<Comment<R>>,
+}
+
+impl<R> CommentList<R> {
+    pub fn new(comments: Vec<Comment<R>>) -> Self {
+        Self {
+            attributes: Props::default(),
+            comments: ListState::new(comments),
+        }
+    }
+
+    fn items(&self, comment: &Comment<R>) -> ListItem {
+        let lines = vec![Spans::from(Span::styled(
+            comment.body.clone(),
+            Style::default().fg(Color::Rgb(117, 113, 249)),
+        ))];
+        ListItem::new(lines)
+    }
+}
+
+impl<R> MockComponent for CommentList<R> {
+    fn view(&mut self, render: &mut Frame, area: Rect) {
+        let items = self
+            .comments
+            .items()
+            .all()
+            .iter()
+            .map(|comment| self.items(comment))
+            .collect::<Vec<_>>();
+
+        let list = TuiList::new(items)
+            .style(Style::default().fg(Color::White))
+            .highlight_style(Style::default().fg(Color::Rgb(238, 111, 248)))
+            .highlight_symbol("│ ")
+            .repeat_highlight_symbol(true);
+
+        let mut state: TuiListState = TuiListState::default();
+        state.select(Some(self.comments.items().selected_index()));
+        render.render_stateful_widget(list, area, &mut state);
+    }
+
+    fn query(&self, attr: Attribute) -> Option<AttrValue> {
+        self.attributes.get(attr)
+    }
+
+    fn attr(&mut self, attr: Attribute, value: AttrValue) {
+        self.attributes.set(attr, value);
+    }
+
+    fn state(&self) -> State {
+        State::One(StateValue::Usize(self.comments.items().selected_index()))
+    }
+
+    fn perform(&mut self, cmd: Cmd) -> CmdResult {
+        match cmd {
+            Cmd::Move(Direction::Up) => {
+                self.comments.select_previous();
+            }
+            Cmd::Move(Direction::Down) => {
+                self.comments.select_next();
+            }
+            _ => {}
+        }
+        CmdResult::None
+    }
+}
+
+impl<R> Component<Message, NoUserEvent> for CommentList<R> {
+    fn on(&mut self, event: Event<NoUserEvent>) -> Option<Message> {
+        match event {
+            Event::Keyboard(KeyEvent {
+                code: Key::Down, ..
+            }) => {
+                self.perform(Cmd::Move(Direction::Down));
+                None
+            }
+            Event::Keyboard(KeyEvent { code: Key::Up, .. }) => {
+                self.perform(Cmd::Move(Direction::Up));
+                None
+            }
+            Event::Keyboard(KeyEvent { code: Key::Esc, .. }) => Some(Message::LeaveDetail),
+            _ => None,
+        }
+    }
+}

terminal-tui/src/lib.rs

@@ -60,6 +60,24 @@ where
         Ok(())
     }
 
+    pub fn remount<C>(
+        &mut self,
+        id: Id,
+        component: C,
+        subs: Vec<Sub<Id, NoUserEvent>>,
+    ) -> Result<(), Error>
+    where
+        C: Component<Message, NoUserEvent> + 'static,
+    {
+        self.backend.remount(id, Box::new(component), subs)?;
+        Ok(())
+    }
+
+    pub fn blur(&mut self) -> Result<(), Error> {
+        self.backend.blur()?;
+        Ok(())
+    }
+
     pub fn activate(&mut self, id: Id) -> Result<(), Error> {
         self.backend.active(&id)?;
         Ok(())