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pub mod message;
pub mod question;
pub mod util;
use crate::deck;
use crate::util::time;
use crate::{db, space_repetition, util::event::Events};
use anyhow::Result;
use rusqlite::Connection;
use std::{fs, io, time::Duration};
use termion::{raw::IntoRawMode, raw::RawTerminal, screen::AlternateScreen};
use tui::{backend::TermionBackend, Terminal};
type Term = Terminal<TermionBackend<AlternateScreen<RawTerminal<io::Stdout>>>>;
pub fn terminal() -> Result<Term> {
let stdout = io::stdout().into_raw_mode()?;
let stdout = AlternateScreen::from(stdout);
let backend = TermionBackend::new(stdout);
Ok(Terminal::new(backend)?)
}
pub fn synchronize(
conn: &Connection,
term: &mut Term,
events: &Events,
deck_path: &str,
deck_name: &str,
) -> Result<()> {
let last_modified = time::seconds_since_unix_epoch_of(fs::metadata(deck_path)?.modified()?)?;
let last_deck_read = db::last_deck_read(conn);
let must_synchronize = last_deck_read.map(|r| r < last_modified).unwrap_or(true);
if must_synchronize {
let _ = message::show(term, events, deck_name, "Synchronization du deck…", false);
time::wait_at_least(
|| db::synchronize(conn, deck::read(deck_path)?),
Duration::from_secs(1),
)?;
}
Ok(())
}
pub fn start(conn: &Connection, term: &mut Term, events: &Events, deck_name: &str) -> Result<()> {
let mut answers = 0;
loop {
let now = time::seconds_since_unix_epoch()?;
let title = title(deck_name, answers, db::count_available(conn).unwrap_or(0));
match db::pick_random_ready(conn) {
Some(card) => {
let difficulty = question::ask(term, events, &title, &card)?;
answers += 1;
db::update(
conn,
&card.question,
&space_repetition::update(card.state, difficulty),
)?;
}
None => {
let message = match db::next_ready(conn) {
Some(ready) => format!(
"Prochaine carte disponible dans {}.",
time::pp_duration(ready - now)
),
None => "Aucune carte n’est disponible. Votre deck est-il vide ?".to_string(),
};
let _ = message::show(term, events, &title, &message, true);
break;
}
}
}
Ok(())
}
fn title(deck_name: &str, answers: i32, available_cards: i32) -> String {
if answers == 0 && available_cards == 0 {
deck_name.to_string()
} else if available_cards == 0 {
format!(
"{} ({} / {})",
deck_name,
answers,
answers + available_cards
)
} else {
format!(
"{} ({} / {})",
deck_name,
answers + 1,
answers + available_cards
)
}
}
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