// Back - An extremely simple git issue tracking system. Inspired by tvix's
// panettone
//
// Copyright (C) 2024 Benedikt Peetz <benedikt.peetz@b-peetz.de>
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This file is part of Back.
//
// You should have received a copy of the License along with this program.
// If not, see <https://www.gnu.org/licenses/agpl.txt>.

use std::fmt::Display;

use gix::hash::Prefix;
use rocket::request::FromParam;

#[derive(Debug)]
pub struct BackPrefix {
    prefix: Prefix,
}
impl Display for BackPrefix {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        self.prefix.fmt(f)
    }
}

impl<'a> FromParam<'a> for BackPrefix {
    type Error = gix::hash::prefix::from_hex::Error;

    fn from_param(param: &'a str) -> Result<Self, Self::Error> {
        let prefix = Prefix::from_hex(param)?;

        Ok(Self { prefix })
    }
}