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use chrono::Duration;
use chrono::prelude::*;
use yansi::{Style,Color};
use utils::misc;
use KhResult;
struct Cell {
date: NaiveDate,
content: (String,String)
}
pub fn printcal() -> KhResult<()> {
let now = Local::today();
let a = cal_month(now);
let b = cal_month(now.with_month(now.month() + 1).unwrap());
let c = cal_month(now.with_month(now.month() + 2).unwrap());
let joined = misc::joinlines(&a, &b);
let joined = misc::joinlines(&joined, &c);
println!("{}", joined);
Ok(())
}
pub fn dbg() -> KhResult<()> {
let begin = Local::today().naive_local();
let end = begin + Duration::days(5);
let cells = get_cells(begin, end);
let cells = expand_cells_to_week(cells);
let render = render_cells(&cells);
print!("{}", render);
Ok(())
}
fn render_cells(cells: &[Cell]) -> String {
let mut result = String::with_capacity(50);
let now = cells[0].date;
result.push_str(&format!("{:>28} {:<8}\n",
now.format("%B").to_string(),
now.format("%Y").to_string()
));
let weekdays = &[ "Mo", "Tu", "We", "Th", "Fr", "Sa", "Su" ].iter().map(|x| format!("{:8}", x)).collect::<String>();
result.push_str(weekdays);
result.push_str("\n");
let flow = render_flow(7, 8, cells);
result.push_str(&flow);
result
}
fn render_flow(cells_per_line: usize, cell_width: usize, cells: &[Cell]) -> String {
let mut result = String::with_capacity(50);
let style = Style::new().bg(Color::Fixed(236));
let it = cells.iter();
let mut n = 0;
while n < (cells.len() / cells_per_line) {
let line = it.clone().skip(n * cells_per_line).take(cells_per_line);
for cell in line.clone() {
let cellstr = &format!("{:width$}", &cell.content.0, width = cell_width);
let cellstr = &format!("{}", style.paint(cellstr));
result.push_str(cellstr);
}
result.push_str("\n");
for cell in line {
let cellstr = &format!("{:width$}", &cell.content.1, width = cell_width);
let cellstr = &format!("{}", style.paint(cellstr));
result.push_str(cellstr);
}
let emptyline = &format!("{:width$}", "", width = cell_width * cells_per_line);
result.push_str("\n");
result.push_str(&format!("{}\n", style.paint(emptyline)));
n += 1;
}
result
}
fn get_cells(date_begin: NaiveDate, date_end: NaiveDate) -> Vec<Cell> {
let mut result = vec!();
let mut date = date_begin;
while date < date_end {
let cell = cell_whatever(date);
result.push(cell);
date += Duration::days(1);
}
result
}
fn cell_whatever(date: NaiveDate) -> Cell {
let fst = date.format("%d").to_string();
let snd = String::from("");
Cell{date, content: (fst, snd)}
}
fn cell_empty(date: NaiveDate) -> Cell {
let fst = date.format("%d").to_string();
let snd = String::from("");
Cell{date, content: (fst, snd)}
}
fn expand_cells_to_week(cells: Vec<Cell>) -> Vec<Cell> {
let mut result = vec!();
let mut day = NaiveDate::from_isoywd(cells[0].date.year(), cells[0].date.iso_week().week(), Weekday::Mon);
while day < cells[0].date {
let cell = cell_empty(day);
result.push(cell);
day += Duration::days(1);
}
let mut day = cells[cells.len() - 1].date;
for cell in cells {
result.push(cell);
}
let last_date = NaiveDate::from_isoywd(day.year(), day.iso_week().week(), Weekday::Sun);
day += Duration::days(1);
while day <= last_date {
let cell = cell_empty(day);
result.push(cell);
day += Duration::days(1);
}
result
}
pub fn cal_month(now: Date<Local>) -> String {
let mut result = String::with_capacity(50);
result.push_str(&format!("{:>11} {:<8}\n",
now.format("%B").to_string(),
now.format("%Y").to_string()
));
result.push_str("Su Mo Tu We Th Fr Sa\n");
let this_month = now.month();
let mut current_day = Local.ymd(now.year(), now.month(), 1);
let one_day = Duration::days(1);
for _ in 0..current_day.weekday().num_days_from_sunday() {
result.push_str(" ");
}
while current_day.month() == this_month {
result.push_str(&format!("{:>2} ", current_day.day()));
if current_day.weekday() == Weekday::Sat {
result.push_str("\n");
}
current_day = current_day + one_day;
}
result.push_str("\n");
result
}
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