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use crate::{
    client::Client,
    error::Error,
    request::{Request, TryIntoRequest},
    response::{marker::EmptyBody, ResponseFuture},
    routing::Route,
};
use twilight_model::id::{
    marker::{ChannelMarker, UserMarker},
    Id,
};

/// Add another member to a thread.
///
/// Requires the ability to send messages in the thread, and that the thread is
/// not archived.
#[must_use = "requests must be configured and executed"]
pub struct AddThreadMember<'a> {
    channel_id: Id<ChannelMarker>,
    http: &'a Client,
    user_id: Id<UserMarker>,
}

impl<'a> AddThreadMember<'a> {
    pub(crate) const fn new(
        http: &'a Client,
        channel_id: Id<ChannelMarker>,
        user_id: Id<UserMarker>,
    ) -> Self {
        Self {
            channel_id,
            http,
            user_id,
        }
    }

    /// Execute the request, returning a future resolving to a [`Response`].
    ///
    /// [`Response`]: crate::response::Response
    pub fn exec(self) -> ResponseFuture<EmptyBody> {
        let http = self.http;

        match self.try_into_request() {
            Ok(request) => http.request(request),
            Err(source) => ResponseFuture::error(source),
        }
    }
}

impl TryIntoRequest for AddThreadMember<'_> {
    fn try_into_request(self) -> Result<Request, Error> {
        Ok(Request::from_route(&Route::AddThreadMember {
            channel_id: self.channel_id.get(),
            user_id: self.user_id.get(),
        }))
    }
}