feat: implement year progress feature

Closes: #92

src/cli.rs

@@ -46,6 +46,8 @@ pub struct Action {
     pub calendar: bool,
     #[clap(short = 'a', long = "agenda", help = "show agenda")]
     pub agenda: bool,
+    #[clap(long = "year-progress", help = "show year progress")]
+    pub yearprogress: bool,
 }
 
 impl Cli {

src/main.rs

@@ -21,6 +21,7 @@ use events::{Events, ReadFromIcsFile};
 use output::agenda::Agenda;
 use output::calendar::Calendar;
 use output::date::Date;
+use output::yearprogress::Yearprogress;
 use utils::DateExtensions;
 
 #[cfg(not(tarpaulin_include))]
@@ -84,6 +85,11 @@ fn main() {
 
     if ctx.opts.action.agenda {
         let agenda = Agenda { ctx: &ctx };
-        print!("{}", agenda)
+        print!("{}", agenda);
+    }
+
+    if ctx.opts.action.yearprogress {
+        let yp = Yearprogress { ctx: &ctx };
+        print!("{}", yp);
     }
 }

src/output/mod.rs

@@ -5,3 +5,4 @@
 pub mod agenda;
 pub mod calendar;
 pub mod date;
+pub mod yearprogress;

src/output/yearprogress.rs

@@ -0,0 +1,30 @@
+// SPDX-FileCopyrightText: 2021-2023 Birger Schacht <[email protected]>
+//
+// SPDX-License-Identifier: MIT
+
+use crate::Context;
+
+use chrono;
+use chrono::Datelike;
+use std::fmt;
+
+pub struct Yearprogress<'a> {
+    pub ctx: &'a Context,
+}
+
+impl fmt::Display for Yearprogress<'_> {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let year = self.ctx.usersetdate.year();
+        let day = self.ctx.usersetdate.ordinal();
+        let days_in_year: u32 = if self.ctx.usersetdate.leap_year() {
+            366
+        } else {
+            365
+        };
+        let days_in_year_left: u32 = days_in_year - day;
+        let percentage: f32 = (day * 100) as f32 / days_in_year as f32;
+        let mut ret = format!("{percentage:.3}% of the year {year}\n");
+        ret += format!("Day number {day} of {year}, {days_in_year_left} left").as_str();
+        write!(f, "{}", ret)
+    }
+}