From 6bdf3fa422dc5d53def54ba2ad3e055737773440 Mon Sep 17 00:00:00 2001
From: Akshay <nerdy@peppe.rs>
Date: Sun, 19 Jul 2020 10:56:04 +0530
Subject: being adding command eval error messages

---
 src/app/impl_self.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/app/impl_self.rs b/src/app/impl_self.rs
index b82dfb9..f4c16f3 100644
--- a/src/app/impl_self.rs
+++ b/src/app/impl_self.rs
@@ -42,7 +42,12 @@ impl App {
     }
 
     pub fn delete_by_name(&mut self, name: &str) {
+        let old_len = self.habits.len();
         self.habits.retain(|h| h.name() != name);
+        if old_len == self.habits.len() {
+            self.message
+                .set_message(format!("Could not delete habit `{}`", name))
+        }
     }
 
     pub fn get_mode(&self) -> ViewMode {
@@ -112,6 +117,10 @@ impl App {
         }
     }
 
+    pub fn clear_message(&mut self) {
+        self.message.clear();
+    }
+
     pub fn status(&self) -> StatusLine {
         let today = chrono::Local::now().naive_utc().date();
         let remaining = self.habits.iter().map(|h| h.remaining(today)).sum::<u32>();
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