extern crate yaml_rust;
use bevy::prelude::*;

pub struct ChatPlugin;
impl Plugin for ChatPlugin {
    fn build(&self, app: &mut App) {
        app.add_systems(Startup, load_chats);
        app.add_event::<StartConversationEvent>();
    }
}

#[derive(Component)]
#[derive(Clone)]
pub struct Talker {
    pub pronoun: String,
    pub conv_id: String,
}
impl Default for Talker { fn default() -> Self { Self {
    pronoun: "they/them".to_string(),
    conv_id: "undefined".to_string(),
}}}

#[derive(Event)]
pub struct StartConversationEvent {
    pub talker: Talker,
}

#[derive(Resource)]
pub struct ChatDB(Vec<yaml_rust::Yaml>);

pub fn load_chats(
    mut commands: Commands,
) {
    let yaml_strings = [
        include_str!("chats/serenity.yaml"),
        include_str!("chats/startrans.yaml"),
    ];
    let yaml_data = yaml_strings.join("\n\n---\n\n");

    if let Ok(yaml_data) = yaml_rust::YamlLoader::load_from_str(yaml_data.as_str()) {
        commands.insert_resource(ChatDB(yaml_data));
    }
    else {
        error!("Could not load chat definitions.  Validate files in `src/chats/` path.");
        commands.insert_resource(ChatDB(Vec::new()));
    }
}