use bevy::prelude::*;
use bevy::audio::PlaybackMode;
use crate::settings;

const ASSET_CLICK: &str = "sounds/click-button-140881-crop.ogg";
const ASSET_SWITCH: &str = "sounds/typosonic-typing-192811-crop.ogg";
const ASSET_INCOMING_MESSAGE: &str = "sounds/connect.ogg";
const ASSET_PING: &str = "sounds/connect.ogg";
const ASSET_CONNECT: &str = "external/friend-request-14878.ogg";
const ASSET_RADIO: &str = "external/LP - Girls Go Wild (Official Music Video)-M7XRN0oHGIM.ogg";
const ASSET_BGM: &str = "external/FTL - Faster Than Light (2012) OST - 12 - Void (Explore)-edQw2yYXQJM.ogg";
const ASSET_THRUSTER: &str = "sounds/thruster.ogg";
const ASSET_WAKEUP: &str = "sounds/wakeup.ogg";

pub struct AudioPlugin;
impl Plugin for AudioPlugin {
    fn build(&self, app: &mut App) {
        app.add_systems(Startup, setup);
        app.add_systems(Update, toggle_bgm);
        app.add_systems(PostUpdate, play_sfx);
        app.add_systems(PostUpdate, update_music);
        app.add_event::<PlaySfxEvent>();
        app.add_event::<ToggleMusicEvent>();
    }
}

pub enum Sfx {
    IncomingChatMessage,
    Click,
    Switch,
    Ping,
    Connect,
    None,
}

#[derive(Event)] pub struct PlaySfxEvent(pub Sfx);
#[derive(Event)] pub struct ToggleMusicEvent();
#[derive(Component)] pub struct ComponentBGM;
#[derive(Component)] pub struct ComponentRadio;
#[derive(Component)] pub struct ComponentThrusterSound;
#[derive(Component)] struct SoundBGM(Handle<AudioSource>);
#[derive(Component)] pub struct SoundRadio(Handle<AudioSource>);
#[derive(Resource)] pub struct SoundClick(Handle<AudioSource>);
#[derive(Resource)] pub struct SoundSwitch(Handle<AudioSource>);
#[derive(Resource)] pub struct SoundIncomingMessage(Handle<AudioSource>);
#[derive(Resource)] pub struct SoundPing(Handle<AudioSource>);
#[derive(Resource)] pub struct SoundConnect(Handle<AudioSource>);

pub fn setup(
    mut commands: Commands,
    settings: Res<settings::Settings>,
    asset_server: Res<AssetServer>,
) {
    commands.spawn((
        ComponentBGM,
        AudioBundle {
            source: SoundBGM(asset_server.load(ASSET_BGM)).0.clone(),
            settings: PlaybackSettings {
                mode: PlaybackMode::Loop,
                paused: settings.hud_active || settings.mute_music,
                ..default()
            },
        },
    ));
    commands.spawn((
        ComponentRadio,
        AudioBundle {
            source: SoundBGM(asset_server.load(ASSET_RADIO)).0.clone(),
            settings: PlaybackSettings {
                mode: PlaybackMode::Loop,
                paused: !settings.hud_active || settings.mute_music,
                ..default()
            },
        },
    ));
    if !settings.mute_sfx {
        commands.spawn((
            AudioBundle {
                source: asset_server.load(ASSET_WAKEUP),
                settings: PlaybackSettings::DESPAWN,
            },
        ));
    }
    commands.spawn((
        ComponentThrusterSound,
        AudioBundle {
            source: asset_server.load(ASSET_THRUSTER),
            settings: PlaybackSettings {
                mode: PlaybackMode::Loop,
                paused: true,
                ..default()
            },
        },
    ));
    commands.insert_resource(SoundClick(asset_server.load(ASSET_CLICK)));
    commands.insert_resource(SoundSwitch(asset_server.load(ASSET_SWITCH)));
    commands.insert_resource(SoundIncomingMessage(asset_server.load(ASSET_INCOMING_MESSAGE)));
    commands.insert_resource(SoundPing(asset_server.load(ASSET_PING)));
    commands.insert_resource(SoundConnect(asset_server.load(ASSET_CONNECT)));
}

pub fn toggle_bgm(
    keyboard_input: Res<ButtonInput<KeyCode>>,
    mut evwriter_toggle: EventWriter<ToggleMusicEvent>,
    mut evwriter_sfx: EventWriter<PlaySfxEvent>,
    mut settings: ResMut<settings::Settings>,
) {
    if keyboard_input.just_pressed(KeyCode::KeyT) {
        settings.mute_music ^= true;
        evwriter_sfx.send(PlaySfxEvent(Sfx::Click));
        evwriter_toggle.send(ToggleMusicEvent());
    }
    if keyboard_input.just_pressed(KeyCode::KeyM) {
        settings.mute_sfx ^= true;
        evwriter_sfx.send(PlaySfxEvent(Sfx::Click));
        evwriter_toggle.send(ToggleMusicEvent());
    }
}

pub fn play_sfx(
    mut commands: Commands,
    settings: Res<settings::Settings>,
    mut events_sfx: EventReader<PlaySfxEvent>,
    sound_click: Res<SoundClick>,
    sound_switch: Res<SoundSwitch>,
    sound_incoming_message: Res<SoundIncomingMessage>,
    sound_ping: Res<SoundPing>,
    sound_connect: Res<SoundConnect>,
) {
    if settings.mute_sfx && !events_sfx.is_empty() {
        events_sfx.clear();
    }
    for sfx in events_sfx.read() {
        commands.spawn(AudioBundle {
            source: match sfx.0 {
                Sfx::Switch => sound_switch.0.clone(),
                Sfx::Click => sound_click.0.clone(),
                Sfx::IncomingChatMessage => sound_incoming_message.0.clone(),
                Sfx::Ping => sound_ping.0.clone(),
                Sfx::Connect => sound_connect.0.clone(),
                Sfx::None => sound_ping.0.clone(),
            },
            settings: PlaybackSettings::DESPAWN,
        });
    }
}

pub fn str2sfx(sfx_label: &str) -> Sfx {
    return match sfx_label {
        "switch" => Sfx::Switch,
        "click" => Sfx::Click,
        "chat" => Sfx::IncomingChatMessage,
        "ping" => Sfx::Ping,
        "connect" => Sfx::Connect,
        _ => Sfx::None,
    };
}

pub fn update_music(
    mut events: EventReader<ToggleMusicEvent>,
    bgm_controller: Query<&AudioSink, With<ComponentBGM>>,
    radio_controller: Query<&AudioSink, With<ComponentRadio>>,
    settings: Res<settings::Settings>,
) {
    if !events.is_empty() {
        events.clear();
        if let Ok(bgm_sink) = bgm_controller.get_single() {
            if let Ok(radio_sink) = radio_controller.get_single() {
                if settings.mute_music {
                    radio_sink.pause();
                    bgm_sink.pause();
                }
                else {
                    if settings.hud_active {
                        radio_sink.play();
                        bgm_sink.pause();
                        println!("pausing");
                    } else {
                        radio_sink.pause();
                        bgm_sink.play();
                        println!("playing");
                    }
                }
            }
        }
    }
}