/*
Copyright 2024, Savanni D'Gerinel <savanni@luminescent-dreams.com>

This file is part of On the Grid.

On the Grid is free software: you can redistribute it and/or modify it under the terms of
the GNU General Public License as published by the Free Software Foundation, either version 3 of
the License, or (at your option) any later version.

On the Grid is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with On the Grid. If not, see <https://www.gnu.org/licenses/>.
*/

// Game review consists of the board, some information about the players, the game tree, and any
// commentary on the current move. This requires four major components, some of which are easier
// than others. The game board has to be kept in sync with the game tree, so there's a
// communication channel there.
//
// I'll get all of the information about the game from the core, and then render everything in the
// UI. So this will be a heavy lift on the UI side.

use crate::{
    components::{Goban, PlayerCard, ReviewTree}, CoreApi, ResourceManager
};
use glib::Object;
use gtk::{prelude::*, subclass::prelude::*};
use otg_core::Color;
use sgf::GameRecord;

#[derive(Default)]
pub struct GameReviewPrivate {}

#[glib::object_subclass]
impl ObjectSubclass for GameReviewPrivate {
    const NAME: &'static str = "GameReview";
    type Type = GameReview;
    type ParentType = gtk::Box;
}

impl ObjectImpl for GameReviewPrivate {}
impl WidgetImpl for GameReviewPrivate {}
impl BoxImpl for GameReviewPrivate {}

glib::wrapper! {
    pub struct GameReview(ObjectSubclass<GameReviewPrivate>) @extends gtk::Box, gtk::Widget, @implements gtk::Accessible;
}

impl GameReview {
    pub fn new(_api: CoreApi, record: GameRecord, resources: ResourceManager) -> Self {
        let s: Self = Object::builder().build();

        // It's actually really bad to be just throwing away errors. Panics make everyone unhappy.
        // This is not a fatal error, so I'll replace this `unwrap` call with something that
        // renders the board and notifies the user of a problem that cannot be resolved.
        let board_repr = match record.mainline() {
            Some(iter) => otg_core::Goban::default().apply_moves(iter).unwrap(),
            None => otg_core::Goban::default(),
        };
        let board = Goban::new(board_repr, resources);

        /*
        s.attach(&board, 0, 0, 2, 2);
        s.attach(&gtk::Label::new(Some("white player")), 0, 2, 1, 1);
        s.attach(&gtk::Label::new(Some("black player")), 0, 2, 1, 2);
        s.attach(&gtk::Label::new(Some("chat")), 1, 2, 2, 2);
        */

        let sidebar = gtk::Box::builder()
            .orientation(gtk::Orientation::Vertical)
            .spacing(4)
            .build();

        // The review tree needs to know the record for being able to render all of the nodes. Once
        // keyboard input is being handled, the tree will have to be updated on each keystroke in
        // order to show the user where they are within the game record.
        let review_tree = ReviewTree::new(record.clone());

        // I think most keyboard focus is going to end up being handled here in GameReview, as
        // keystrokes need to affect both the goban and the review tree simultanesouly. Possibly
        // also the player information, seeing as moving to a new position may mean that the score
        // and time remaining can be updated.

        let player_information_section = gtk::Box::builder()
            .orientation(gtk::Orientation::Horizontal)
            .spacing(4)
            .build();

        player_information_section.append(&PlayerCard::new(Color::Black, &record.black_player));
        player_information_section.append(&PlayerCard::new(Color::White, &record.white_player));

        s.append(&board);
        sidebar.append(&player_information_section);
        sidebar.append(&review_tree);
        s.append(&sidebar);

        s
    }
}