use bevy::{
    color::palettes::css::{BLACK, INDIGO, ORANGE, PURPLE, RED, TEAL},
    prelude::*,
};

use crate::view::{button_set_state, ViewState};

/// Game Menu
pub struct MenuPlugin;

impl Plugin for MenuPlugin {
    fn build(&self, app: &mut App) {
        app.add_systems(
            Startup,
            (
                setup,
                setup_about,
                setup_how_to_play,
                setup_deck,
                setup_sets,
            ),
        );
    }
}

fn setup(mut commands: Commands) {
    commands
        .spawn((ViewState::Menu, Node::default()))
        .with_children(|parent| {
            parent
                .spawn((Button, BackgroundColor(TEAL.into())))
                .with_children(|parent| {
                    parent.spawn(Text("Play".to_string()));
                })
                .observe(button_set_state(ViewState::Play));
            parent
                .spawn((Button, BackgroundColor(ORANGE.into())))
                .with_children(|parent| {
                    parent.spawn(Text("About".to_string()));
                })
                .observe(button_set_state(ViewState::About));
            parent
                .spawn((Button, BackgroundColor(PURPLE.into())))
                .with_children(|parent| {
                    parent.spawn(Text("How to Play".to_string()));
                })
                .observe(button_set_state(ViewState::HowToPlay));
            parent
                .spawn((Button, BackgroundColor(RED.into())))
                .with_children(|parent| {
                    parent.spawn(Text("Quit".to_string()));
                })
                .observe(quit_button);
        });

    commands
        .spawn((ViewState::Play, Node::default()))
        .with_children(|parent| {
            parent
                .spawn((Button, BackgroundColor(TEAL.into()), GlobalZIndex(1)))
                .with_children(|parent| {
                    parent.spawn(Text("Menu".to_string()));
                })
                .observe(button_set_state(ViewState::Menu));
            parent
                .spawn((Button, BackgroundColor(INDIGO.into()), GlobalZIndex(1)))
                .with_children(|parent| {
                    parent.spawn(Text("Deck".to_string()));
                })
                .observe(button_set_state(ViewState::Deck));
            parent
                .spawn((Button, BackgroundColor(ORANGE.into()), GlobalZIndex(1)))
                .with_children(|parent| {
                    parent.spawn(Text("Sets".to_string()));
                })
                .observe(button_set_state(ViewState::Sets));
        });
}

fn setup_about(mut commands: Commands) {
    commands
        .spawn((ViewState::About, Node::default()))
        .with_children(|parent| {
            parent
                .spawn((Button, BackgroundColor(TEAL.into())))
                .with_children(|parent| {
                    parent.spawn(Text("Menu".to_string()));
                })
                .observe(button_set_state(ViewState::Menu));
            parent.spawn((
                Text("This is the about page".to_string()),
                BackgroundColor(BLACK.into()),
            ));
        });
}

fn setup_how_to_play(mut commands: Commands) {
    commands
        .spawn((ViewState::HowToPlay, Node::default()))
        .with_children(|parent| {
            parent
                .spawn((Button, BackgroundColor(TEAL.into())))
                .with_children(|parent| {
                    parent.spawn(Text("Menu".to_string()));
                })
                .observe(button_set_state(ViewState::Menu));
            parent.spawn((
                Text("This is the how to play page".to_string()),
                BackgroundColor(BLACK.into()),
            ));
        });
}

fn setup_deck(mut commands: Commands) {
    commands
        .spawn((ViewState::Deck, Node::default()))
        .with_children(|parent| {
            parent
                .spawn((Button, BackgroundColor(TEAL.into())))
                .with_children(|parent| {
                    parent.spawn(Text("Back".to_string()));
                })
                .observe(button_set_state(ViewState::Play));
        });
}

fn setup_sets(mut commands: Commands) {
    commands
        .spawn((ViewState::Sets, Node::default()))
        .with_children(|parent| {
            parent
                .spawn((Button, BackgroundColor(TEAL.into())))
                .with_children(|parent| {
                    parent.spawn(Text("Back".to_string()));
                })
                .observe(button_set_state(ViewState::Play));
        });
}

fn quit_button(_trigger: Trigger<Pointer<Click>>, mut exit_event: EventWriter<AppExit>) {
    exit_event.send(AppExit::Success);
}