use level::Level;
use serde::{Deserialize, Serialize};
use ssr_core::task::{level::TaskLevel, Feedback, InterationItem, Task, UserInteraction};
use std::{collections::HashSet, time::SystemTime};
mod level;
#[derive(Serialize, Deserialize)]
pub struct WriteAnswer {
level: Level,
description: String,
correct_answers: HashSet<String>,
explanation: Option<String>,
}
impl WriteAnswer {
pub fn new(
description: String,
correct_answers: impl IntoIterator<Item = String>,
explanation: Option<String>,
) -> Self {
Self {
level: Default::default(),
description,
correct_answers: correct_answers.into_iter().collect(),
explanation,
}
}
}
impl<'a> Task<'a> for WriteAnswer {
type SharedState = ();
fn get_desctiption(&self) -> &str {
&self.description
}
fn next_repetition(&self, _: f64) -> SystemTime {
self.level.next_repetition(0.)
}
fn complete(mut self, _: &mut (), interaction: &mut impl UserInteraction) -> (Self, Feedback) {
let user_answer = {
let mut user_answer = interaction.interact(vec![
InterationItem::Text(self.description.clone()),
InterationItem::BlankField,
]);
assert!(user_answer.len() == 1);
user_answer.swap_remove(0)
};
match self.correct_answers.contains(&user_answer) {
false => {
self.level.update(&mut (), (SystemTime::now(), false));
let correct_answers = self.correct_answers.clone().into_iter().collect();
let explanation = self.explanation.clone();
(
self,
Feedback::WrongAnswer {
correct_answers,
explanation,
},
)
}
true => {
self.level.update(&mut (), (SystemTime::now(), true));
(self, Feedback::CorrectAnswer)
}
}
}
}