use std::{error::Error, pin::Pin, task::{Context, Poll}};

use futures::Sink;
use mammut::{status_builder::Visibility, Mastodon, StatusBuilder};

pub struct MastodonPublisher {
    mastodon: Mastodon,
}

impl MastodonPublisher {
    pub fn new(mastodon: Mastodon) -> Self {
        Self { mastodon }
    }
}

impl Sink<String> for MastodonPublisher {
    type Error = Box<dyn Error>;

    fn poll_ready(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
        Poll::Ready(Ok(()))
    }

    fn start_send(self: Pin<&mut Self>, item: String) -> Result<(), Self::Error> {
        let mut post = StatusBuilder::new(item);
        post.visibility = Some(Visibility::Public);
        self.mastodon.new_status(post)?;
        Ok(())
    }

    fn poll_flush(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
        Poll::Ready(Ok(()))
    }

    fn poll_close(self: Pin<&mut Self>, _: &mut Context<'_>) -> Poll<Result<(), Self::Error>> {
        Poll::Ready(Ok(()))
    }
}