use tek_tui::{*, tek_input::*, tek_output::*};
use tek_edn::*;
use std::sync::{Arc, RwLock};
use crossterm::event::{*, KeyCode::*};
use crate::ratatui::style::Color;

const EDN: &'static [&'static str] = &[
    include_str!("edn01.edn"),
    include_str!("edn02.edn"),
    include_str!("edn03.edn"),
    include_str!("edn04.edn"),
    include_str!("edn05.edn"),
    include_str!("edn06.edn"),
    include_str!("edn07.edn"),
    include_str!("edn08.edn"),
    include_str!("edn09.edn"),
    include_str!("edn10.edn"),
    include_str!("edn11.edn"),
    include_str!("edn12.edn"),
    include_str!("edn13.edn"),
];
fn main () -> Usually<()> {
    let state = Arc::new(RwLock::new(Example(10, Measure::new())));
    Tui::new().unwrap().run(&state)?;
    Ok(())
}
#[derive(Debug)] pub struct Example(usize, Measure<TuiOut>);
edn_view!(TuiOut: |self: Example|{
    let title   = Tui::bg(Color::Rgb(60,10,10),
        Push::y(1, Align::n(format!("Example {}/{} in {:?}", self.0 + 1, EDN.len(), &self.1.wh()))));
    let code    = Tui::bg(Color::Rgb(10,60,10),
        Push::y(2, Align::n(format!("{}", EDN[self.0]))));
    let content = Tui::bg(Color::Rgb(10,10,60),
        EdnView::from_source(self, EDN[self.0]));
    self.1.of(Bsp::s(title, Bsp::n(""/*code*/, content)))
};{
    bool {};
    u16 {};
    usize {};
    Box<dyn Render<TuiOut> + 'a> {
        ":title"       => Tui::bg(Color::Rgb(60,10,10), Push::y(1, Align::n(format!("Example {}/{}:", self.0 + 1, EDN.len())))).boxed(),
        ":code"        => Tui::bg(Color::Rgb(10,60,10), Push::y(2, Align::n(format!("{}", EDN[self.0])))).boxed(),
        ":hello-world" => "Hello world!".boxed(),
        ":hello"       => Tui::bg(Color::Rgb(10, 100, 10), "Hello").boxed(),
        ":world"       => Tui::bg(Color::Rgb(100, 10, 10), "world").boxed()
    }
});
impl Handle<TuiIn> for Example {
    fn handle (&mut self, input: &TuiIn) -> Perhaps<bool> {
        match input.event() {
            kpat!(Right) => self.0 = (self.0 + 1) % EDN.len(),
            kpat!(Left) => self.0 = if self.0 > 0 { self.0 - 1 } else { EDN.len() - 1 },
            _ => return Ok(None)
        }
        Ok(Some(true))
    }
}