From b1b8369fe5621ff5b2222977bb357bec15a911e2 Mon Sep 17 00:00:00 2001
From: Akshay <nerdy@peppe.rs>
Date: Sat, 4 Jul 2020 19:37:02 +0530
Subject: new 'delete' command

---
 src/app.rs     | 36 +++++++++++++++++++++++++++++++++---
 src/command.rs | 10 ++++++++--
 src/habit.rs   |  4 ++++
 3 files changed, 45 insertions(+), 5 deletions(-)

diff --git a/src/app.rs b/src/app.rs
index 4ea342f..7495dd8 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -58,12 +58,23 @@ impl App {
         self.habits.push(h);
     }
 
+    pub fn delete_by_name(&mut self, name: &str) {
+        self.habits.retain(|h| h.get_name() != name);
+    }
+
     pub fn set_mode(&mut self, set_mode: ViewMode) {
         if set_mode != self.view_mode {
             self.view_mode = set_mode;
         }
     }
 
+    pub fn set_view_month_offset(&mut self, offset: u32) {
+        self.view_month_offset = offset;
+        for v in self.habits.iter_mut() {
+            v.set_view_month_offset(offset);
+        }
+    }
+
     pub fn sift_backward(&mut self) {
         self.view_month_offset += 1;
         for v in self.habits.iter_mut() {
@@ -175,6 +186,10 @@ impl App {
                     self.add_habit(Box::new(Bit::new(name)));
                 }
             }
+            Command::Delete(name) => {
+                self.delete_by_name(&name);
+                self.focus = 0;
+            }
             Command::MonthNext => self.sift_forward(),
             Command::MonthPrev => self.sift_backward(),
             _ => {
@@ -255,8 +270,11 @@ impl View for App {
                 return EventResult::Consumed(None);
             }
             Event::Char('d') => {
+                if self.habits.is_empty() {
+                    return EventResult::Consumed(None);
+                }
                 self.habits.remove(self.focus);
-                self.focus = 0;
+                self.focus = self.focus.checked_sub(1).unwrap_or(0);
                 return EventResult::Consumed(None);
             }
             Event::Char('w') => {
@@ -266,9 +284,13 @@ impl View for App {
                 return EventResult::Consumed(None);
             }
             Event::Char('q') => {
-                self.save_state();
+                // self.save_state();
                 return EventResult::with_cb(|s| s.quit());
             }
+
+            /* We want sifting to be an app level function,
+             * that later trickles down into each habit
+             * */
             Event::CtrlChar('f') => {
                 self.sift_forward();
                 return EventResult::Consumed(None);
@@ -277,7 +299,15 @@ impl View for App {
                 self.sift_backward();
                 return EventResult::Consumed(None);
             }
-            _ => self.habits[self.focus].on_event(e),
+
+            /* Every keybind that is not caught by App trickle
+             * s down to the focused Habit We sift back to today
+             * before performing any action, "refocusing" the cursor
+             * */
+            _ => {
+                self.set_view_month_offset(0);
+                self.habits[self.focus].on_event(e)
+            }
         }
     }
 }
diff --git a/src/command.rs b/src/command.rs
index c4f20fc..f94eab8 100644
--- a/src/command.rs
+++ b/src/command.rs
@@ -17,10 +17,10 @@ fn call_on_app(s: &mut Cursive, input: &str) {
 }
 
 pub enum Command {
-    Add(String, String, Option<u32>),
+    Add(String, String, Option<u32>), // habit name, habit type, optional goal
     MonthPrev,
     MonthNext,
-    Delete,
+    Delete(String),
     Blank,
 }
 
@@ -45,6 +45,12 @@ impl Command {
                     goal,
                 );
             }
+            "delete" | "d" => {
+                if args.len() < 1 {
+                    return Command::Blank;
+                }
+                return Command::Delete(args[0].to_string());
+            }
             "mprev" | "month-prev" => return Command::MonthPrev,
             "mnext" | "month-next" => return Command::MonthNext,
             _ => return Command::Blank,
diff --git a/src/habit.rs b/src/habit.rs
index 9872bbc..48dd363 100644
--- a/src/habit.rs
+++ b/src/habit.rs
@@ -66,6 +66,7 @@ pub trait HabitWrapper: erased_serde::Serialize {
     fn take_focus(&mut self, _: Direction) -> bool;
     fn set_view_month_offset(&mut self, offset: u32);
     fn view_month_offset(&self) -> u32;
+    fn get_name(&self) -> String;
 }
 
 macro_rules! auto_habit_impl {
@@ -99,6 +100,9 @@ macro_rules! auto_habit_impl {
             fn view_month_offset(&self) -> u32 {
                 Habit::view_month_offset(self)
             }
+            fn get_name(&self) -> String {
+                Habit::name(self)
+            }
         }
     };
 }
-- 
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