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//! Various ID types

use std::{fmt, ops};

use serde::{Deserialize, Serialize};
use smallstr::SmallString;

mod community_id;
mod post_id;

macro_rules! impl_id {
    ($name:ident, $docs:expr) => {
        #[doc = $docs]
        ///
        /// Generated by `impl_id!` macro.
        #[derive(Clone, Copy, Debug, Deserialize, Serialize, PartialEq, Eq, Hash)]
        pub struct $name(pub i64);

        impl ops::Deref for $name {
            type Target = i64;

            fn deref(&self) -> &Self::Target {
                &self.0
            }
        }

        impl fmt::Display for $name {
            fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
                write!(f, "{}", self.0)
            }
        }
    };
}

impl_id!(CommentId, "A comment ID.");
impl_id!(CommunityId, "A community ID.");
impl_id!(FlagId, "A flag ID.");
impl_id!(PollOptionId, "A poll option ID.");
impl_id!(PostId, "A post ID.");
impl_id!(RemoteId, "A remote ID.");
impl_id!(UserId, "A user ID.");

#[derive(Clone, Debug, Deserialize, Serialize, PartialEq, Eq, Hash)]
pub struct PageId(pub SmallString<[u8; 24]>);

impl ops::Deref for PageId {
    type Target = str;

    fn deref(&self) -> &Self::Target {
        &self.0
    }
}