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use cursive::theme::{BaseColor, Color, Effect, Style};
use cursive::utils::markup::StyledString;
use cursive::utils::span::SpannedString;
use cursive::Cursive;
use cursive::XY;
use std::cmp;
use std::collections::HashMap;
use std::sync::Arc;
use super::markdown;
use super::views::{
LayoutView, ListView, MdView, Name, Vimable, NAME_ANSWER_LIST, NAME_ANSWER_VIEW,
NAME_QUESTION_LIST, NAME_QUESTION_VIEW,
};
use crate::config;
use crate::error::Result;
use crate::stackexchange::{Answer, Question};
// -----------------------------------------
// |question title list|answer preview list| 1/3
// -----------------------------------------
// |question body |answer body | 2/3
// -----------------------------------------
// TODO <shift+HJKL> moves layout boundaries
// TODO <hjkl> to move focus? at least for lists..
// TODO <space> to cycle layout
// TODO <?> to bring up key mappings
// TODO query initial term size to choose initial layout
// TODO Circular Focus handles layout & focus & stuff
// TODO these might be "layers" ?
// TODO make my own views for lists, md, etc, and use cursive::inner_getters!
// (or at least type synonyms)
// and abstract out the common builder funcs
//pub struct App<'a> {
//pub stackexchange: StackExchange,
///// the questions matching the current query
//pub question_list: StatefulList<Question>,
///// the answers to a single question (i.e. the answer list currently shown)
//pub answer_list: StatefulList<Answer>,
//pub questions: Vec<Question>,
//pub layout: Layout,
//pub focus: Focus,
//pub mode: Mode,
//pub ratio: (u32, u32),
//}
// TODO maybe a struct like Tui::new(stackexchange) creates App::new and impls tui.run()?
// TODO take async questions
// TODO take the entire SE struct for future questions
pub fn run(qs: Vec<Question>) -> Result<()> {
let mut siv = cursive::default();
siv.load_theme_file(config::theme_file_name()?).unwrap(); // TODO dont unwrap
//app state
//put this in siv.set_user_data? hmm
//TODO maybe this isn't necessary until multithreading
let question_map: HashMap<u32, Question> = qs.clone().into_iter().map(|q| (q.id, q)).collect();
let question_map = Arc::new(question_map);
let answer_map: HashMap<u32, Answer> = qs
.clone()
.into_iter()
.map(|q| q.answers.into_iter().map(|a| (a.id, a)))
.flatten()
.collect();
let answer_map = Arc::new(answer_map);
let question_view = MdView::new(Name::QuestionView);
let answer_view = MdView::new(Name::AnswerView);
let question_list_view = ListView::new_with_items(
Name::QuestionList,
qs.into_iter().map(|q| (preview_question(&q), q.id)),
move |s, qid| question_selected_callback(question_map.clone(), s, qid),
);
// TODO init with qs[0].answers ?
let answer_list_view = ListView::new(Name::AnswerList, move |s, aid| {
let a = answer_map.get(aid).unwrap();
s.call_on_name(NAME_ANSWER_VIEW, |v: &mut MdView| v.set_content(&a.body));
});
siv.add_layer(
LayoutView::new(
1,
question_list_view,
question_view,
answer_list_view,
answer_view,
)
.add_vim_bindings(),
);
let cb = siv.call_on_name(NAME_QUESTION_LIST, |v: &mut ListView| v.select(0));
if let Some(cb) = cb {
cb(&mut siv)
}
cursive::logger::init();
siv.add_global_callback('?', cursive::Cursive::toggle_debug_console);
siv.run();
Ok(())
}
// TODO need to get size of question list view, as this will change depending on layout
fn question_selected_callback(
question_map: Arc<HashMap<u32, Question>>,
mut s: &mut Cursive,
qid: &u32,
) {
let q = question_map.get(qid).unwrap();
let XY { x, y: _y } = s.screen_size();
// Update question view
s.call_on_name(NAME_QUESTION_VIEW, |v: &mut MdView| {
v.set_content(&q.body);
})
.expect("TODO: make sure this is callable: setting question body on view");
// Update answer list view
let cb = s
.call_on_name(NAME_ANSWER_LIST, |v: &mut ListView| {
v.reset_with_all(q.answers.iter().map(|a| (preview_answer(x, a), a.id)))
})
.expect("TODO why would this ever fail");
cb(&mut s)
}
fn preview_question(q: &Question) -> StyledString {
let mut preview = pretty_score(q.score);
preview.append_plain(&q.title);
preview
}
fn preview_answer(screen_width: usize, a: &Answer) -> StyledString {
let width = cmp::min(a.body.len(), screen_width);
let md = markdown::preview(width, a.body.to_owned());
let mut preview = pretty_score(a.score);
if a.is_accepted {
preview.append_styled(
"\u{2713} ", // "✔ "
Style::merge(&[
Style::from(Color::Light(BaseColor::Green)),
Style::from(Effect::Bold),
]),
);
}
preview.append(md);
preview
}
fn pretty_score(score: i32) -> StyledString {
let color = if score > 0 {
Color::Light(BaseColor::Green)
} else {
Color::Light(BaseColor::Red)
};
SpannedString::styled(
format!("({}) ", score),
Style::merge(&[Style::from(color), Style::from(Effect::Bold)]),
)
}
// TODO see cursive/examples/src/bin/select_test.rs for how to test the interface!
// maybe see if we can conditionally run when --nocapture is passed?
#[cfg(test)]
mod tests {
use super::*;
use crate::stackexchange::{Answer, Question};
#[test]
fn test_app() {
let ans_body = r#"
Also try the iter:
1. asdf
2. asfd
0. asdfa sfsdf
but
cargo build --example stderr
and then you run it with
cd "$(target/debug/examples/stderr)"
cd `(target/debug/examples/stderr)`
what the application prints on stdout is used as argument to `cd`.
Try it out.
Hit any key to quit this screen:
* **1** will print `..`
* **2** will print `/`
* **3** will print `~`
* or anything else to print this text (so that you may copy-paste)
"#;
let qs = vec![Question {
id: 42,
score: 323,
title: "How do I exit Vim?".to_string(),
body: "yo this be my problem dawg but don't say **do** `this`".to_string(),
answers: vec![
Answer {
id: 422,
score: -4,
body: ans_body.to_string(),
is_accepted: false,
},
Answer {
id: 423,
score: 23,
body: "this is a *good* answer tho".to_string(),
is_accepted: true,
},
],
}];
}
}
|
