task_diff 0.2.1

use std::char;
use std::io;

extern crate ncurses;
use ncurses::*;

extern crate unescape;
use unescape::unescape;

extern crate colored;
use colored::*;

extern crate task_diff;
use task_diff::{pair::Pair, parser};

fn get_input() -> String {
    // Setup ncurses
    initscr();
    raw();

    // Allow for extended keyboard (like F1)
    keypad(stdscr(), true);
    noecho();

    printw("Please enter your diff (ENTER / ESC once done):\n");
    let mut input = String::new();
    loop {
        let ch = getch();
        match ch {
            10 | 27 => break, // Return if ENTER or ESC
            32...126 => {
                // match printable ASCII characters
                let c = char::from_u32(ch as u32).expect("Invalid char");
                printw(&format!("{}", c));
                input.push(c);
            }
            _ => (),
        }
        refresh();
    }

    endwin();
    input
}

fn run_app() -> io::Result<()> {
    let input = get_input();
    let pair = Pair::new(unescape(&input).expect("Invalid input").as_str())?;
    let result = parser::diff(&pair.a, &pair.b)?;
    for line in result {
        let color = match line.diff {
            '+' => "cyan",
            '~' => "yellow",
            '-' => "red",
            _ => "white",
        };
        let output = format!("{}", line);
        println!("{}", output.color(color));
    }
    Ok(())
}

fn main() {
    ::std::process::exit(match run_app() {
        Ok(_) => 0,
        Err(err) => {
            eprintln!("error: {}", err);
            1
        }
    });
}