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extern crate almanac;
extern crate itertools;
extern crate colored;
use std::env;
use std::io::BufReader;
use std::fs::File;
use itertools::Itertools;
use colored::*;
use almanac::Calendar;
use almanac::Date;
use almanac::Duration;
use almanac::Event;
fn main() {
let mut args = env::args().skip(1);
let (first, last) = period(&args.next().unwrap());
let calendars: Vec<_> = args.map(|arg| ics_calendar(&arg)).collect();
let events = calendars
.iter()
.map(|c| c.iter())
.kmerge()
.skip_while(|e| e.end_date() < first)
.take_while(|e| e.start <= last);
print_events(events)
}
fn period(arg: &str) -> (Date, Date) {
let days = match arg {
"day" => 1,
"week" => 7,
"month" => 30,
_ => panic!("Invalid time frame, try: day, week or month"),
};
let first = Date::now();
let last = first + Duration::days(days);
(first, last)
}
fn ics_calendar(file_path: &str) -> Calendar {
let file = File::open(file_path).unwrap();
let buf = BufReader::new(file);
Calendar::parse(buf).unwrap()
}
fn print_events(events: impl Iterator<Item = Event>) {
let mut day = Date::new();
let mut unfinish = vec![];
for event in events {
if !day.same_day(&event.start) {
if !unfinish.is_empty() {
while !day.same_day(&event.start) {
day = day + Duration::days(1);
print_day(day);
for (i, event) in unfinish.clone().iter().enumerate() {
print_event(event);
if event.end_date() <= day + Duration::days(1) {
unfinish.remove(i);
}
}
}
} else {
day = event.start.clone();
print_day(day);
}
}
print_event(&event);
if event.end_date() > event.start + Duration::days(1) {
unfinish.push(event);
}
}
while !unfinish.is_empty() {
day = day + Duration::days(1);
print_day(day);
for (i, event) in unfinish.clone().iter().enumerate() {
print_event(event);
if event.end_date() <= day + Duration::days(1) {
unfinish.remove(i);
}
}
}
}
fn print_day(date: Date) {
println!("\n{}", date.format("%a %b %e %Y").green().bold())
}
fn print_event(event: &Event) {
let start = match event.start {
Date::Time(_) => event.start.format("%R"),
Date::AllDay(_) => "-----".to_string(),
};
let end = match event.end_date() {
Date::Time(_) => event.end_date().format("%R"),
Date::AllDay(_) => "-----".to_string(),
};
println!(
" {}-{} {} {}",
start.yellow(),
end.yellow(),
event.summary,
event.location.purple()
);
if !event.description.is_empty() {
println!(" {} {}", " ".repeat(11), event.description.cyan());
}
}
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