use serenity::async_trait;
use serenity::model::{gateway::Ready, guild::Member};
use serenity::prelude::*;
use serenity::Client;

struct Handler;

#[async_trait]
impl EventHandler for Handler {
    async fn guild_member_addition(&self, ctx: Context, new_member: Member) {
        if let Ok(partial_guild) = new_member.guild_id.to_partial_guild(&ctx.http).await {
            if let Some(system_channel) = partial_guild.system_channel_id {
                match system_channel.say(ctx.http, "Bonjour").await {
                    Ok(ok) => {
                        println!("Greeted {:?}", ok);
                    }
                    Err(err) => {
                        eprintln!("Failed {:?}", err);
                    }
                }
            }
        }
    }

    async fn ready(&self, ctx: Context, ready: Ready) {
        ctx.invisible().await;
        println!(
            "{}#{} is connected.",
            ready.user.name, ready.user.discriminator
        );
    }
}

#[tokio::main]
async fn main() {
    let mut client = Client::builder(
        "ODU5NTIzMDA4MTc4ODE1MDE2.G8hAh4.IzWYvNpu0dtvQJBkrG-WuQuS548oi9mTNCcgA8",
        GatewayIntents::GUILD_MEMBERS,
    )
    .event_handler(Handler)
    .await
    .expect("Error creating client");

    if let Err(why) = client.start().await {
        eprintln!("Error with client: {:?}", why);
    }
}