10 files changed, 150 insertions, 19 deletions

diff --git a/src/app/cursor.rs b/src/app/cursor.rs
new file mode 100644
index 0000000..ed6bd65
--- /dev/null
+++ b/src/app/cursor.rs
@@ -0,0 +1,51 @@
+use chrono::{Duration, Local, NaiveDate};
+use cursive::direction::Absolute;
+
+#[derive(Debug, Copy, Clone)]
+pub struct Cursor(pub NaiveDate);
+
+impl std::default::Default for Cursor {
+    fn default() -> Self {
+        Cursor::new()
+    }
+}
+
+impl Cursor {
+    pub fn new() -> Self {
+        Cursor {
+            0: Local::now().naive_local().date(),
+        }
+    }
+    pub fn do_move(&mut self, d: Absolute) {
+        let today = Local::now().naive_local().date();
+        let cursor = self.0;
+        match d {
+            Absolute::Right => {
+                // forward by 1 day
+                let next = cursor.succ_opt().unwrap_or(cursor);
+                if next <= today {
+                    self.0 = next;
+                }
+            }
+            Absolute::Left => {
+                // backward by 1 day
+                // assumes an infinite past
+                self.0 = cursor.pred_opt().unwrap_or(cursor);
+            }
+            Absolute::Down => {
+                // forward by 1 week
+                let next = cursor.checked_add_signed(Duration::weeks(1)).unwrap();
+                if next <= today {
+                    self.0 = next;
+                }
+            }
+            Absolute::Up => {
+                // backward by 1 week
+                // assumes an infinite past
+                let next = cursor.checked_sub_signed(Duration::weeks(1)).unwrap();
+                self.0 = next;
+            }
+            Absolute::None => {}
+        }
+    }
+}
diff --git a/src/app/impl_self.rs b/src/app/impl_self.rs
index 1114d50..abf5209 100644
--- a/src/app/impl_self.rs
+++ b/src/app/impl_self.rs
@@ -15,7 +15,7 @@ use crate::command::{Command, CommandLineError};
 use crate::habit::{Bit, Count, HabitWrapper, TrackEvent, ViewMode};
 use crate::utils::{self, GRID_WIDTH, VIEW_HEIGHT, VIEW_WIDTH};
 
-use crate::app::{App, MessageKind, StatusLine};
+use crate::app::{App, Cursor, Message, MessageKind, StatusLine};
 
 impl App {
     pub fn new() -> Self {
@@ -28,7 +28,8 @@ impl App {
             _file_watcher: watcher,
             file_event_recv: rx,
             view_month_offset: 0,
-            message: "Type :add <habit-name> <goal> to get started, Ctrl-L to dismiss".into(),
+            cursor: Cursor::new(),
+            message: Message::startup(),
         };
     }
 
@@ -85,6 +86,13 @@ impl App {
         }
     }
 
+    pub fn move_cursor(&mut self, d: Absolute) {
+        self.cursor.do_move(d);
+        for v in self.habits.iter_mut() {
+            v.move_cursor(d);
+        }
+    }
+
     pub fn set_focus(&mut self, d: Absolute) {
         match d {
             Absolute::Right => {
@@ -129,7 +137,7 @@ impl App {
             format!("{}", Local::now().naive_local().date().format("%d/%b/%y"),)
         } else {
             let months = self.view_month_offset;
-            format!("{}", format!("{} months ago", months),)
+            format!("{}", format!("{} month(s) ago", months),)
         };
 
         StatusLine {
diff --git a/src/app/impl_view.rs b/src/app/impl_view.rs
index 395cac4..0ec47f1 100644
--- a/src/app/impl_view.rs
+++ b/src/app/impl_view.rs
@@ -95,6 +95,24 @@ impl View for App {
                 self.set_focus(Absolute::Down);
                 return EventResult::Consumed(None);
             }
+
+            Event::Char('w') => {
+                self.move_cursor(Absolute::Up);
+                return EventResult::Consumed(None);
+            }
+            Event::Char('a') => {
+                self.move_cursor(Absolute::Left);
+                return EventResult::Consumed(None);
+            }
+            Event::Char('s') => {
+                self.move_cursor(Absolute::Down);
+                return EventResult::Consumed(None);
+            }
+            Event::Char('d') => {
+                self.move_cursor(Absolute::Right);
+                return EventResult::Consumed(None);
+            }
+
             Event::Char('v') => {
                 if self.habits.is_empty() {
                     return EventResult::Consumed(None);
diff --git a/src/app/message.rs b/src/app/message.rs
index 65f0a5c..a1d3d57 100644
--- a/src/app/message.rs
+++ b/src/app/message.rs
@@ -35,6 +35,9 @@ pub struct Message {
 }
 
 impl Message {
+    pub fn startup() -> Self {
+        "Type :add <habit-name> <goal> to get started, Ctrl-L to dismiss".into()
+    }
     pub fn contents(&self) -> &str {
         &self.msg
     }
diff --git a/src/app/mod.rs b/src/app/mod.rs
index 2aecb33..9432f0d 100644
--- a/src/app/mod.rs
+++ b/src/app/mod.rs
@@ -5,11 +5,13 @@ use notify::{DebouncedEvent, RecommendedWatcher};
 
 use crate::habit::HabitWrapper;
 
+mod cursor;
 mod impl_self;
 mod impl_view;
 mod message;
 
 pub struct StatusLine(String, String);
+pub use cursor::Cursor;
 pub use message::{Message, MessageKind};
 
 pub struct App {
@@ -20,6 +22,7 @@ pub struct App {
     file_event_recv: Receiver<DebouncedEvent>,
     focus: usize,
     view_month_offset: u32,
+    cursor: Cursor,
     message: Message,
 }
 
diff --git a/src/habit/bit.rs b/src/habit/bit.rs
index 2bbb0ac..7fe6fd9 100644
--- a/src/habit/bit.rs
+++ b/src/habit/bit.rs
@@ -1,8 +1,10 @@
 use std::collections::HashMap;
 
 use chrono::NaiveDate;
+use cursive::direction::Absolute;
 use serde::{Deserialize, Serialize};
 
+use crate::app::Cursor;
 use crate::habit::prelude::default_auto;
 use crate::habit::traits::Habit;
 use crate::habit::{TrackEvent, ViewMode};
@@ -45,6 +47,9 @@ pub struct Bit {
     view_month_offset: u32,
 
     #[serde(skip)]
+    cursor: Cursor,
+
+    #[serde(skip)]
     view_mode: ViewMode,
 }
 
@@ -56,6 +61,7 @@ impl Bit {
             goal: CustomBool(true),
             auto,
             view_month_offset: 0,
+            cursor: Cursor::new(),
             view_mode: ViewMode::Day,
         };
     }
@@ -124,6 +130,12 @@ impl Habit for Bit {
     fn view_month_offset(&self) -> u32 {
         self.view_month_offset
     }
+    fn move_cursor(&mut self, d: Absolute) {
+        self.cursor.do_move(d);
+    }
+    fn cursor(&self) -> Cursor {
+        self.cursor
+    }
     fn set_view_mode(&mut self, mode: ViewMode) {
         self.view_mode = mode;
     }
diff --git a/src/habit/count.rs b/src/habit/count.rs
index d351758..b14354c 100644
--- a/src/habit/count.rs
+++ b/src/habit/count.rs
@@ -1,8 +1,10 @@
 use std::collections::HashMap;
 
 use chrono::NaiveDate;
+use cursive::direction::Absolute;
 use serde::{Deserialize, Serialize};
 
+use crate::app::Cursor;
 use crate::habit::prelude::default_auto;
 use crate::habit::traits::Habit;
 use crate::habit::{TrackEvent, ViewMode};
@@ -20,6 +22,9 @@ pub struct Count {
     view_month_offset: u32,
 
     #[serde(skip)]
+    cursor: Cursor,
+
+    #[serde(skip)]
     view_mode: ViewMode,
 }
 
@@ -31,6 +36,7 @@ impl Count {
             goal,
             auto,
             view_month_offset: 0,
+            cursor: Cursor::new(),
             view_mode: ViewMode::Day,
         };
     }
@@ -101,6 +107,12 @@ impl Habit for Count {
     fn view_month_offset(&self) -> u32 {
         self.view_month_offset
     }
+    fn move_cursor(&mut self, d: Absolute) {
+        self.cursor.do_move(d);
+    }
+    fn cursor(&self) -> Cursor {
+        self.cursor
+    }
     fn set_view_mode(&mut self, mode: ViewMode) {
         self.view_mode = mode;
     }
diff --git a/src/habit/traits.rs b/src/habit/traits.rs
index 74fd00b..289fd95 100644
--- a/src/habit/traits.rs
+++ b/src/habit/traits.rs
@@ -1,10 +1,11 @@
 use chrono::NaiveDate;
-use cursive::direction::Direction;
+use cursive::direction::{Absolute, Direction};
 use cursive::event::{Event, EventResult};
 use cursive::{Printer, Vec2};
 
 use typetag;
 
+use crate::app::Cursor;
 use crate::habit::{Bit, Count, TrackEvent, ViewMode};
 use crate::views::ShadowView;
 
@@ -24,6 +25,9 @@ pub trait Habit {
     fn set_view_month_offset(&mut self, offset: u32);
     fn view_month_offset(&self) -> u32;
 
+    fn move_cursor(&mut self, d: Absolute);
+    fn cursor(&self) -> Cursor;
+
     fn set_view_mode(&mut self, mode: ViewMode);
     fn view_mode(&self) -> ViewMode;
 
@@ -44,6 +48,9 @@ pub trait HabitWrapper: erased_serde::Serialize {
     fn set_view_month_offset(&mut self, offset: u32);
     fn view_month_offset(&self) -> u32;
 
+    fn move_cursor(&mut self, d: Absolute);
+    fn cursor(&self) -> Cursor;
+
     fn set_view_mode(&mut self, mode: ViewMode);
     fn view_mode(&self) -> ViewMode;
 
@@ -87,6 +94,12 @@ macro_rules! auto_habit_impl {
             fn view_month_offset(&self) -> u32 {
                 Habit::view_month_offset(self)
             }
+            fn move_cursor(&mut self, d: Absolute) {
+                Habit::move_cursor(self, d)
+            }
+            fn cursor(&self) -> Cursor {
+                Habit::cursor(self)
+            }
             fn set_view_mode(&mut self, mode: ViewMode) {
                 Habit::set_view_mode(self, mode)
             }
diff --git a/src/theme.rs b/src/theme.rs
index 1d2cc36..e373b72 100644
--- a/src/theme.rs
+++ b/src/theme.rs
@@ -1,6 +1,6 @@
 use cursive::theme::Color::*;
 use cursive::theme::PaletteColor::*;
-use cursive::theme::{BorderStyle, Palette, Theme};
+use cursive::theme::{BorderStyle, ColorStyle, Palette, Style, Theme};
 
 pub fn pallete_gen() -> Palette {
     let mut p = Palette::default();
@@ -24,3 +24,11 @@ pub fn theme_gen() -> Theme {
     t.palette = pallete_gen();
     return t;
 }
+
+pub fn cursor_gen(foreground: Style) -> Style {
+    Style::from(ColorStyle::new(
+        TerminalDefault,
+        Light(cursive::theme::BaseColor::Blue),
+    ))
+    .combine(foreground)
+}
diff --git a/src/views.rs b/src/views.rs
index efd1391..a0beb2c 100644
--- a/src/views.rs
+++ b/src/views.rs
@@ -5,9 +5,10 @@ use cursive::view::View;
 use cursive::{Printer, Vec2};
 
 use chrono::prelude::*;
-use chrono::{Duration, Local, NaiveDate};
+use chrono::{Local, NaiveDate};
 
 use crate::habit::{Bit, Count, Habit, TrackEvent, ViewMode};
+use crate::theme::cursor_gen;
 use crate::utils::VIEW_WIDTH;
 
 use crate::CONFIGURATION;
@@ -27,13 +28,15 @@ where
     T::HabitType: std::fmt::Display,
 {
     fn draw(&self, printer: &Printer) {
-        let now = if self.view_month_offset() == 0 {
-            Local::today()
-        } else {
-            Local::today()
-                .checked_sub_signed(Duration::weeks(4 * self.view_month_offset() as i64))
-                .unwrap()
-        };
+        // let now = if self.view_month_offset() == 0 {
+        //     Local::today()
+        // } else {
+        //     Local::today()
+        //         .checked_sub_signed(Duration::weeks(4 * self.view_month_offset() as i64))
+        //         .unwrap()
+        // };
+        let now = self.cursor().0;
+        let is_today = now == Local::now().naive_local().date();
         let year = now.year();
         let month = now.month();
 
@@ -43,8 +46,7 @@ where
 
         let strikethrough = Style::from(Effect::Strikethrough);
 
-        let goal_status =
-            self.view_month_offset() == 0 && self.reached_goal(Local::now().naive_local().date());
+        let goal_status = is_today && self.reached_goal(Local::now().naive_local().date());
 
         printer.with_style(
             Style::merge(&[
@@ -110,11 +112,12 @@ where
         let draw_day = |printer: &Printer| {
             let mut i = 0;
             while let Some(d) = NaiveDate::from_ymd_opt(year, month, i + 1) {
-                let day_style;
+                let mut day_style = todo_style;
                 if self.reached_goal(d) {
                     day_style = goal_reached_style;
-                } else {
-                    day_style = todo_style;
+                }
+                if d == now && printer.focused {
+                    day_style = day_style.combine(cursor_gen(day_style));
                 }
                 let coords: Vec2 = ((i % 7) * 3, i / 7 + 2).into();
                 if let Some(c) = self.get_by_date(d) {
@@ -146,7 +149,7 @@ where
     }
 
     fn on_event(&mut self, e: Event) -> EventResult {
-        let now = Local::now().naive_local().date();
+        let now = self.cursor().0;
         if self.is_auto() {
             return EventResult::Ignored;
         }