/*
 * This file is part of sdbclient
 * Copyright (C) 2023 Jonni Liljamo <jonni@liljamo.com>
 *
 * Licensed under GPL-3.0-only.
 * See LICENSE for licensing information.
 */

use bevy::prelude::*;
use bevy_inspector_egui::bevy_egui::{egui, EguiContext};
use iyes_loopless::prelude::*;

use crate::{
    plugins::menu::MenuState,
    runtime::menu::{PlayMenuUIState, RTDMenu},
};

use super::{AllFormingEvent, CreateGameEvent, PlayMenuState};

pub(super) fn show(
    mut commands: Commands,
    mut egui_context: ResMut<EguiContext>,
    mut rtdmenu: ResMut<RTDMenu>,
    mut creategame_ev_w: EventWriter<CreateGameEvent>,
    mut allforming_ev_w: EventWriter<AllFormingEvent>,
) {
    egui::Window::new(egui::RichText::new(rtdmenu.play_menu_ui_state.display()).size(32.))
        .resizable(false)
        .collapsible(false)
        .anchor(egui::Align2::CENTER_CENTER, egui::Vec2::ZERO)
        .fixed_size(egui::Vec2::new(800., 600.))
        .show(egui_context.ctx_mut(), |ui| {
            // Override egui style for this scope.
            let mut egui_style = (*ui.style_mut()).clone();
            egui_style.text_styles = [
                (
                    egui::TextStyle::Heading,
                    egui::FontId::new(30.0, egui::FontFamily::Proportional),
                ),
                (
                    egui::TextStyle::Body,
                    egui::FontId::new(18.0, egui::FontFamily::Proportional),
                ),
                (
                    egui::TextStyle::Monospace,
                    egui::FontId::new(14.0, egui::FontFamily::Proportional),
                ),
                (
                    egui::TextStyle::Button,
                    egui::FontId::new(24.0, egui::FontFamily::Proportional),
                ),
                (
                    egui::TextStyle::Small,
                    egui::FontId::new(10.0, egui::FontFamily::Proportional),
                ),
            ]
            .into();
            ui.set_style(egui_style);

            match rtdmenu.play_menu_ui_state {
                PlayMenuUIState::Main => {
                    egui::SidePanel::left("play_side_panel").show_inside(ui, |ui| {
                        ui.vertical_centered(|ui| {
                            if ui.button("Create").clicked() {
                                rtdmenu.play_menu_ui_state = PlayMenuUIState::CreateGame
                            }

                            if ui.button("Refresh Browse").clicked() {
                                allforming_ev_w.send(AllFormingEvent);
                            }

                            if ui.button("Back").clicked() {
                                commands.insert_resource(NextState(PlayMenuState::None));
                                commands.insert_resource(NextState(MenuState::Main));
                            }
                        });
                    });

                    match rtdmenu.waiting_for_all_forming_call {
                        true => {
                            ui.horizontal(|ui| {
                                ui.spinner();
                                ui.label("loading...");
                            });
                        }
                        false => {
                            ui.vertical_centered(|ui| {
                                egui::ScrollArea::vertical()
                                    .max_height(200.)
                                    .show(ui, |ui| match rtdmenu.all_forming_games.is_empty() {
                                        true => {
                                            ui.label("No games found.");
                                        }
                                        false => {
                                            for game in &rtdmenu.all_forming_games {
                                                egui::Frame::none().show(ui, |ui| {
                                                    ui.horizontal(|ui| {
                                                        ui.label(format!("Host: {}", game.p1));
                                                    });
                                                });
                                            }
                                        }
                                    });
                            });
                        }
                    }
                }
                PlayMenuUIState::CreateGame => {
                    ui.vertical_centered(|ui| {
                        ui.add_enabled_ui(!rtdmenu.waiting_for_create_game_call, |ui| {
                            if ui.button("Confirm").clicked() {
                                creategame_ev_w.send(CreateGameEvent);
                            }

                            if ui.button("Cancel").clicked() {
                                rtdmenu.play_menu_ui_state = PlayMenuUIState::Main
                            }
                        });
                    });
                }
                PlayMenuUIState::InLobbyHost => {
                    if ui.button("Back").clicked() {
                        rtdmenu.play_menu_ui_state = PlayMenuUIState::Main
                    }
                }
                PlayMenuUIState::InLobbyGuest => {
                    if ui.button("Back").clicked() {
                        rtdmenu.play_menu_ui_state = PlayMenuUIState::Main
                    }
                }
            }
        });
}