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/*
    This file is part of jellything (https://codeberg.org/metamuffin/jellything)
    which is licensed under the GNU Affero General Public License (version 3); see /COPYING.
    Copyright (C) 2023 metamuffin <metamuffin.org>
*/

use std::ops::Deref;

use super::ui::{
    account::{login_logic, LoginForm},
    error::MyResult,
};
use crate::database::Database;
use rocket::{
    get,
    http::MediaType,
    outcome::Outcome,
    post,
    request::{self, FromRequest},
    response::Redirect,
    serde::json::Json,
    Request, State,
};
use serde_json::{json, Value};

#[get("/api")]
pub fn r_api_root() -> Redirect {
    Redirect::moved("https://codeberg.org/metamuffin/jellything/src/branch/master/api.md")
}

#[get("/api/version")]
pub fn r_api_version() -> &'static str {
    "2"
}

#[post("/api/account/login", data = "<data>")]
pub fn r_api_account_login(database: &State<Database>, data: Json<LoginForm>) -> MyResult<Value> {
    let token = login_logic(database, &data.username, &data.password)?;
    Ok(json!(token))
}

pub struct AcceptJson(bool);
impl Deref for AcceptJson {
    type Target = bool;
    fn deref(&self) -> &Self::Target {
        &self.0
    }
}
impl<'r> FromRequest<'r> for AcceptJson {
    type Error = ();

    fn from_request<'life0, 'async_trait>(
        request: &'r Request<'life0>,
    ) -> ::core::pin::Pin<
        Box<
            dyn ::core::future::Future<Output = request::Outcome<Self, Self::Error>>
                + ::core::marker::Send
                + 'async_trait,
        >,
    >
    where
        'r: 'async_trait,
        'life0: 'async_trait,
        Self: 'async_trait,
    {
        Box::pin(async move {
            Outcome::Success(AcceptJson(
                request
                    .accept()
                    .map(|a| a.preferred().exact_eq(&MediaType::JSON))
                    .unwrap_or(false),
            ))
        })
    }
}