Clear command and colored output

Cargo.toml

@@ -12,3 +12,4 @@ serde_json = "1.0"
 chrono = { version = "0.4", features = ["serde"] }
 structopt = { version = "0.3", default-features = false }
 dialoguer = "0.5"
+colored = "1.8"

src/data.rs

@@ -1,4 +1,5 @@
 use chrono::prelude::*;
+use colored::*;
 use serde::{Deserialize, Serialize};
 use std::fmt;
 
@@ -25,9 +26,10 @@ impl fmt::Display for Note {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         write!(
             f,
-            "{}\n\nCreated at: {}",
-            self.note,
-            self.datetime.format("%v %r")
+            "{}\n\n{} {}",
+            self.note.cyan(),
+            "Created at:".green(),
+            self.datetime.format("%v %r").to_string().magenta()
         )
     }
 }

src/main.rs

@@ -1,4 +1,5 @@
-use dialoguer::Editor;
+use colored::*;
+use dialoguer::{Confirmation, Editor};
 use std::env;
 use std::error::Error;
 use std::fs::{read_to_string, File};
@@ -19,6 +20,7 @@ struct Cli {
 enum Command {
     List { number: Option<usize> },
     Search { text: String },
+    Clear,
 }
 
 fn run() -> Result<(), Box<dyn Error>> {
@@ -47,6 +49,18 @@ fn run() -> Result<(), Box<dyn Error>> {
                     println!("No notes found!");
                 }
             }
+            Command::Clear => {
+                if Confirmation::new()
+                    .with_text("Do you want clear all notes?")
+                    .default(false)
+                    .interact()?
+                {
+                    clear_notes();
+                    println!("Cleared!!")
+                } else {
+                    println!("Abort!");
+                }
+            }
         },
         None => {
             if let Some(note_text) = Editor::new().edit("").expect("Please set a default editor") {
@@ -90,16 +104,16 @@ fn read_note_list() -> Result<Vec<data::Note>, std::io::Error> {
 }
 
 fn list_notes(note_list: &Vec<data::Note>, num: usize) -> String {
-    let number = if note_list.len() > num {
-        num
-    } else {
-        note_list.len()
-    };
-    note_list[..number]
+    note_list
         .iter()
+        .rev()
+        .take(num)
         .map(|n| n.to_string())
-        .collect::<Vec<String>>()
-        .join("\n===================================\n\n")
+        .collect::<Vec<_>>()
+        .join(&format!(
+            "\n{}\n\n",
+            "===================================".green()
+        ))
 }
 
 fn write_notes(note_list: Vec<data::Note>) {
@@ -110,6 +124,10 @@ fn write_notes(note_list: Vec<data::Note>) {
     .expect("Could not write to file");
 }
 
+fn clear_notes() {
+    write_notes(Vec::new());
+}
+
 fn main() {
     if let Err(err) = run() {
         println!("{}", err);