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mod threads;

use crate::window::{Area, Window};

use std::io::{Stdin, Write};
use termion::event::Key;
use termion::input::TermRead;

pub use threads::Threads;


pub struct Client {
    window: Window,
    buffers: Vec<Buffer>,
}

impl Client {
    pub fn new<W: Write>(initial_buffer: Buffer, out: &mut W) -> Self {
        let size = termion::terminal_size().unwrap();
        let mut window = Window::new();
        match &initial_buffer {
            Buffer::Threads(t) => t.fill_window(&mut window),
        }
        window.draw(out, Area {
            x: 1,
            y: 1,
            w: size.0,
            h: size.1,
        }).unwrap();
        Self {
            window,
            buffers: vec![initial_buffer],
        }
    }

    pub fn run<W: Write>(mut self, out: &mut W, stdin: Stdin) {
        for c in stdin.keys() {
            let c = c.unwrap();
            // Global keybinds
            match c {
                Key::Char('q') => {
                    self.buffers.pop().unwrap();
                    if self.buffers.is_empty() {
                        break;
                    }
                },
                _ => ()
            }

            let next_buffer = match self.buffers.last_mut().unwrap() {
                Buffer::Threads(s) => s.tick(&mut self.window, c),
            };

            if let Some(next_buffer) = next_buffer {
                self.buffers.push(next_buffer);
            }

            write!(out, "{}", termion::clear::All).unwrap();

            let size = termion::terminal_size().unwrap();
            self.window.draw(out, Area {
                x: 1,
                y: 1,
                w: size.0,
                h: size.1,
            }).unwrap();
        }
    }
}

pub enum Buffer {
    Threads(Threads),
}

impl Buffer {
    pub fn name(&self) -> String {
        match self {
            Buffer::Threads(t) => t.name(),
        }
    }
}