extern crate portable_pty;

mod monstera;
mod process;
mod pty;
mod ascii_box;

use{
    std::sync::{Arc, RwLock},
    cgmath::{Point2, Vector2},
    termion::event::{Event, Key},
    nested::{
        core::{
            View,
            ViewPort,
            InnerViewPort,
            OuterViewPort,
            Observer,
            ObserverExt,
            ObserverBroadcast,
            context::{ReprTree, Object, MorphismType, MorphismMode, Context},
            port::{UpdateTask}},
        index::{IndexView},
        grid::{GridWindowIterator},
        sequence::{SequenceView, SequenceViewExt},
        vec::{VecBuffer},
        integer::{RadixProjection, DigitEditor, PosIntEditor},
        terminal::{
            Terminal,
            TerminalStyle,
            TerminalAtom,
            TerminalCompositor,
            TerminalEvent,
            make_label,
            TerminalView,
            TerminalEditor},
        string_editor::{StringEditor},
        tree_nav::{TreeNav, TreeNavResult, TreeCursor, TerminalTreeEditor},
        list::{SExprView, ListCursorMode, ListEditor, ListEditorStyle}
    },
    crate::{
        process::ProcessLauncher
    }
};

#[async_std::main]
async fn main() {
    let term_port = ViewPort::new();
    let compositor = TerminalCompositor::new(term_port.inner());

    let mut term = Terminal::new(term_port.outer());
    let term_writer = term.get_writer();

    async_std::task::spawn(
        async move {
            let table_port = ViewPort::<dyn nested::grid::GridView<Item = OuterViewPort<dyn TerminalView>>>::new();
            let mut table_buf = nested::index::buffer::IndexBuffer::new(table_port.inner());

            let magic = make_label("<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>")
                .map_item(
                    |pos, atom|
                    atom.add_style_back(
                        TerminalStyle::fg_color(
                            (5,
                             ((80+(pos.x*30)%100) as u8),
                             (55+(pos.x*15)%180) as u8)
                        )
                    )
                );

            let cur_size_port = ViewPort::new();
            let mut cur_size = nested::singleton::SingletonBuffer::new(Vector2::new(10, 10), cur_size_port.inner());

            let status_chars_port = ViewPort::new();
            let mut status_chars = VecBuffer::new(status_chars_port.inner());

            let mut process_list_editor = ListEditor::new(
                Box::new(|| {
                    Arc::new(RwLock::new(
                        ProcessLauncher::new()
                    ))
                }),
                ListEditorStyle::VerticalSexpr
            );

            table_buf.insert_iter(vec![
                (Point2::new(0, 0), magic.clone()),
                (Point2::new(0, 1), status_chars_port.outer().to_sequence().to_grid_horizontal()),
                (Point2::new(0, 2), magic.clone()),
                (Point2::new(0, 3), process_list_editor.get_term_view())
            ]);

            compositor.write().unwrap().push(monstera::make_monstera());
            compositor.write().unwrap().push(table_port.outer().flatten().offset(Vector2::new(40, 2)));

            process_list_editor.goto(TreeCursor {
                leaf_mode: ListCursorMode::Insert,
                tree_addr: vec![ 0 ]
            });

            loop {
                term_port.update();
                /*
                if let Some(p) = pty.as_mut() {
                    if p.get_status() {
                        if let Some(ptybox) = ptybox.take() {
                            ptybox.write().unwrap().fit_content();
                        }
                        pty = None;
                        process_list_editor.up();
                    }
                }
*/
                term_port.update();

                let ev = term.next_event().await;
/*
                if let Some(pty) = pty.as_mut() {
                    pty.handle_terminal_event(&ev);
                } else {
*/
                match ev {
                    TerminalEvent::Resize(new_size) => {
                        cur_size.set(new_size);
                        term_port.inner().get_broadcast().notify_each(
                            nested::grid::GridWindowIterator::from(
                                Point2::new(0,0) .. Point2::new(new_size.x, new_size.y)
                            )
                        );
                    }
                    TerminalEvent::Input(Event::Key(Key::Ctrl('c'))) |
                    TerminalEvent::Input(Event::Key(Key::Ctrl('g'))) |
                    TerminalEvent::Input(Event::Key(Key::Ctrl('d'))) => break,

                    TerminalEvent::Input(Event::Key(Key::Left)) => {
                        process_list_editor.pxev();
                    }
                    TerminalEvent::Input(Event::Key(Key::Right)) => {
                        process_list_editor.nexd();
                    }
                    TerminalEvent::Input(Event::Key(Key::Up)) => {
                        if process_list_editor.up() == TreeNavResult::Exit {
                            process_list_editor.dn();
                            process_list_editor.goto_home();
                        }
                    }
                    TerminalEvent::Input(Event::Key(Key::Down)) => {
                        if process_list_editor.dn() == TreeNavResult::Continue {
                            process_list_editor.goto_home();
                        }
                    }
                    TerminalEvent::Input(Event::Key(Key::Home)) => {
                        process_list_editor.goto_home();
                    }
                    TerminalEvent::Input(Event::Key(Key::End)) => {
                        process_list_editor.goto_end();
                    }
                    TerminalEvent::Input(Event::Key(Key::Char('\n'))) => {
                        //let mut output_port = ViewPort::new();
                        process_list_editor.get_item().unwrap().write().unwrap().launch_pty2();
/*
                        let box_port = ViewPort::new();                        
                        let test_box = AsciiBox::new(
                            Vector2::new(80, 25),
                            output_port.outer()
                                .map_item(|_,a| a.add_style_back(TerminalStyle::fg_color((230, 230, 230)))),
                            box_port.inner()
                        );

                        ptybox = Some(test_box.clone());

                        table_buf.remove(Point2::new(0, y-1));

                        let mut p = box_port.outer().map_item(|_idx, x| x.add_style_back(TerminalStyle::fg_color((90, 120, 100)))                            .offset(Vector2::new(0, -1));
                        table_port.update_hooks.write().unwrap().push(Arc::new(p.clone().0));

                        y += 1;
                        table_buf.insert(Point2::new(0, y), p.clone());
*/
                    }

                    ev => {
                        if process_list_editor.get_cursor().leaf_mode == ListCursorMode::Select {
                            match ev {
                                TerminalEvent::Input(Event::Key(Key::Char('l'))) => { process_list_editor.up(); },
                                TerminalEvent::Input(Event::Key(Key::Char('a'))) => { process_list_editor.dn(); },
                                TerminalEvent::Input(Event::Key(Key::Char('i'))) => { process_list_editor.pxev(); },
                                TerminalEvent::Input(Event::Key(Key::Char('e'))) => { process_list_editor.nexd(); },
                                TerminalEvent::Input(Event::Key(Key::Char('u'))) => { process_list_editor.goto_home(); },
                                TerminalEvent::Input(Event::Key(Key::Char('o'))) => { process_list_editor.goto_end(); },
                                _ => {
                                    process_list_editor.handle_terminal_event(&ev);
                                }
                            }
                        } else {
                            process_list_editor.handle_terminal_event(&ev);
                        }
                    }
                }

                status_chars.clear();
                let cur = process_list_editor.get_cursor();

                if cur.tree_addr.len() > 0 {
                    status_chars.push(TerminalAtom::new('@', TerminalStyle::fg_color((120, 80, 80)).add(TerminalStyle::bold(true))));
                    for x in cur.tree_addr {
                        for c in format!("{}", x).chars() {
                            status_chars.push(TerminalAtom::new(c, TerminalStyle::fg_color((0, 100, 20))));
                        }
                        status_chars.push(TerminalAtom::new('.', TerminalStyle::fg_color((120, 80, 80))));
                    }

                    status_chars.push(TerminalAtom::new(':', TerminalStyle::fg_color((120, 80, 80)).add(TerminalStyle::bold(true))));
                    for c in
                        match cur.leaf_mode {
                            ListCursorMode::Insert => "INSERT",
                            ListCursorMode::Select => "SELECT",
                            ListCursorMode::Modify => "MODIFY"
                        }.chars()
                    {
                        status_chars.push(TerminalAtom::new(c, TerminalStyle::fg_color((200, 200, 20))));
                    }
                    status_chars.push(TerminalAtom::new(':', TerminalStyle::fg_color((120, 80, 80)).add(TerminalStyle::bold(true))));
                } else {
                    for c in "Press <DN> to enter".chars() {
                        status_chars.push(TerminalAtom::new(c, TerminalStyle::fg_color((200, 200, 20))));
                    }
                }
            }

            //drop(term);
        }
    );

    term_writer.show().await.expect("output error!");
}