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use crate::{
    client::Client,
    error::Error,
    request::{Pending, Request},
    routing::Route,
};
use twilight_model::{guild::Guild, id::GuildId};

#[derive(Default)]
struct GetGuildFields {
    with_counts: bool,
}

/// Get information about a guild.
pub struct GetGuild<'a> {
    fields: GetGuildFields,
    fut: Option<Pending<'a, Option<Guild>>>,
    guild_id: GuildId,
    http: &'a Client,
}

impl<'a> GetGuild<'a> {
    pub(crate) fn new(http: &'a Client, guild_id: GuildId) -> Self {
        Self {
            fields: GetGuildFields::default(),
            fut: None,
            guild_id,
            http,
        }
    }

    /// Sets if you want to receive `approximate_member_count` and `approximate_presence_count` in
    /// the guild structure.
    pub const fn with_counts(mut self, with: bool) -> Self {
        self.fields.with_counts = with;

        self
    }

    fn start(&mut self) -> Result<(), Error> {
        let request = Request::from_route(Route::GetGuild {
            guild_id: self.guild_id.0,
            with_counts: self.fields.with_counts,
        });

        self.fut.replace(Box::pin(self.http.request(request)));

        Ok(())
    }
}

poll_req!(GetGuild<'_>, Option<Guild>);