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

use bevy::prelude::*;
use bevy_egui::{egui, EguiContexts};

use crate::{
    api::game::{Action, Command, Game},
    game_status::{Card, PlayerState},
    plugins::{GameActionCreateCallEvent, GameDetailsCallEvent},
    AppState, Global,
};

use super::{supply::SpawnSupplyPilesEvent, GameData};

pub struct GameUIPlugin;

impl Plugin for GameUIPlugin {
    fn build(&self, app: &mut App) {
        app.add_system(details_ui.run_if(in_state(AppState::InGame)));
    }
}

pub fn details_ui(
    mut contexts: EguiContexts,
    global: Res<Global>,
    game_data: Res<GameData>,
    mut details_ev_w: EventWriter<GameDetailsCallEvent>,
    mut create_action_ev_w: EventWriter<GameActionCreateCallEvent>,
    mut ssp_ev_w: EventWriter<SpawnSupplyPilesEvent>,
) {
    egui::Window::new("Game Details").show(contexts.ctx_mut(), |ui| {
        let Some(game) = &game_data.game else {
                // early return if game is None
                return;
            };
        let Some(status) = &game_data.game_status else {
                if game_data.parsing_data {
                    // early return if game_status is None, and we're parsing it
                    return;
                }
                // game_status is None, but we're not parsing it...
                // should be unreachable, I think?
                return;
            };

        if ui.button("Refresh").clicked() {
            details_ev_w.send(GameDetailsCallEvent {
                game_id: game_data.game.as_ref().unwrap().id.clone(),
            });
        }

        if status.actions.is_empty() && game.host_id == global.user.as_ref().unwrap().id {
            if ui.button("Init Game").clicked() {
                // NOTE/FIXME: hardcoded game init
                hardcoded_init(game, &mut create_action_ev_w);
            }
        }

        if ui.button("spawn things").clicked() {
            ssp_ev_w.send(SpawnSupplyPilesEvent);
        }

        ui.separator();

        egui::CollapsingHeader::new("Game")
            .default_open(true)
            .show(ui, |ui| {
                ui.label(format!("Host: {}", game.host.as_ref().unwrap().username));
                ui.label(format!("Guest: {}", game.guest.as_ref().unwrap().username));

                ui.label(format!("State: {:?}", game.state));
            });

        egui::CollapsingHeader::new("Supply Piles")
            .default_open(false)
            .show(ui, |ui| {
                for pile in &status.supply_piles {
                    egui::CollapsingHeader::new(&pile.card.name)
                        .default_open(true)
                        .show(ui, |ui| {
                            ui.label(format!("Amount: {}", pile.amount));
                        });
                }
            });

        egui::CollapsingHeader::new("Log")
            .default_open(false)
            .show(ui, |ui| {
                egui::ScrollArea::vertical()
                    .max_width(f32::INFINITY)
                    .show(ui, |ui| {
                        for (i, action) in status.actions.iter().enumerate() {
                            egui::CollapsingHeader::new(format!("{}", i))
                                .default_open(false)
                                .show(ui, |ui| {
                                    ui.add(
                                        egui::TextEdit::multiline(
                                            &mut serde_json::to_string_pretty(action).unwrap(),
                                        )
                                        .code_editor()
                                        .interactive(false)
                                        .desired_width(f32::INFINITY),
                                    );
                                });
                        }
                    });
            });
    });
}

fn hardcoded_init(game: &Game, create_action_ev_w: &mut EventWriter<GameActionCreateCallEvent>) {
    // first, piles
    create_action_ev_w.send(GameActionCreateCallEvent {
        action: Action::new(
            &game.id,
            &game.host_id,
            &game.host_id,
            &Command::InitSupplyPile {
                card: Card {
                    name: "Test Card".to_string(),
                    short_details: vec![],
                    long_details: vec![],
                    cost: 4,
                    actions: vec![],
                },
                amount: 10,
            },
            fastrand::u64(u64::MIN..=u64::MAX),
        ),
    });
    create_action_ev_w.send(GameActionCreateCallEvent {
        action: Action::new(
            &game.id,
            &game.host_id,
            &game.host_id,
            &Command::InitSupplyPile {
                card: Card {
                    name: "Test Card 2".to_string(),
                    short_details: vec![],
                    long_details: vec![],
                    cost: 4,
                    actions: vec![],
                },
                amount: 10,
            },
            fastrand::u64(u64::MIN..=u64::MAX),
        ),
    });
    create_action_ev_w.send(GameActionCreateCallEvent {
        action: Action::new(
            &game.id,
            &game.host_id,
            &game.host_id,
            &Command::InitSupplyPile {
                card: Card {
                    name: "Test Card 3".to_string(),
                    short_details: vec![],
                    long_details: vec![],
                    cost: 4,
                    actions: vec![],
                },
                amount: 10,
            },
            fastrand::u64(u64::MIN..=u64::MAX),
        ),
    });
    create_action_ev_w.send(GameActionCreateCallEvent {
        action: Action::new(
            &game.id,
            &game.host_id,
            &game.host_id,
            &Command::InitSupplyPile {
                card: Card {
                    name: "Test Card 4".to_string(),
                    short_details: vec![],
                    long_details: vec![],
                    cost: 4,
                    actions: vec![],
                },
                amount: 10,
            },
            fastrand::u64(u64::MIN..=u64::MAX),
        ),
    });

    // second, set a player to the action phase, to start the game
    create_action_ev_w.send(GameActionCreateCallEvent {
        action: Action::new(
            &game.id,
            &game.host_id,
            &game.host_id,
            &Command::ChangePlayerState {
                state: PlayerState::ActionPhase,
            },
            fastrand::u64(u64::MIN..=u64::MAX),
        ),
    });
}