// Copyright (C) 2026 Emilis Bliūdžius
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

use crate::{limited::FixedLenString, player::Username};
use chrono::{DateTime, Utc};
use serde::{Deserialize, Serialize};

pub const TOKEN_LEN: usize = 0x20;

pub type TokenString = FixedLenString<TOKEN_LEN>;

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct Token {
    pub token: TokenString,
    pub username: Username,
    pub display_name: Option<String>,
    pub pronouns: Option<String>,
    pub created_at: DateTime<Utc>,
    pub expires_at: DateTime<Utc>,
}

impl Token {
    pub fn login_token(&self) -> TokenLogin {
        TokenLogin(self.token.clone())
    }
}

#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
pub struct TokenLogin(pub FixedLenString<TOKEN_LEN>);

#[cfg(feature = "ssr")]
impl axum_extra::headers::authorization::Credentials for TokenLogin {
    const SCHEME: &'static str = "Bearer";

    fn decode(value: &axum::http::HeaderValue) -> Option<Self> {
        value
            .to_str()
            .ok()
            .and_then(|v| FixedLenString::new(v.strip_prefix("Bearer ").unwrap_or(v).to_string()))
            .map(Self)
    }

    fn encode(&self) -> axum::http::HeaderValue {
        axum::http::HeaderValue::from_str(self.0.as_str()).expect("bearer token encode")
    }
}