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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) 2026 metamuffin <metamuffin.org>
*/
#![feature(int_roundings, str_as_str, duration_constructors)]
#![allow(clippy::needless_borrows_for_generic_args)]
#![recursion_limit = "4096"]

use crate::{auth::token::SessionKey, logger::setup_logger};
use anyhow::{Result, anyhow};
use jellycache::Cache;
use jellydb::Database;
use log::{error, info};
use routes::build_rocket;
use serde::Deserialize;
use std::{env::args, fs::read_to_string, path::PathBuf, process::exit, sync::Arc};

pub mod api;
pub mod auth;
pub mod compat;
pub mod logger;
pub mod logic;
pub mod request_info;
pub mod responders;
pub mod routes;
pub mod ui;

#[rocket::main]
async fn main() {
    setup_logger();

    let state = match create_state() {
        Ok(s) => s,
        Err(e) => {
            error!("unable to start: {e:#}");
            exit(1);
        }
    };
    let r = build_rocket(state).launch().await;
    match r {
        Ok(_) => info!("server shutdown"),
        Err(e) => {
            error!("server exited: {e}");
            exit(1);
        }
    }
}

pub struct State {
    pub config: Config,
    pub cache: Cache,
    pub database: Arc<dyn Database>,
    pub session_key: SessionKey,
}

#[derive(Debug, Deserialize)]
pub struct Config {
    pub ui: jellyui::Config,
    pub session_key: String,
    pub asset_path: PathBuf,
    pub database_path: PathBuf,
    pub cache_path: PathBuf,
    pub max_memory_cache_size: usize,
    pub tls: bool,
    pub hostname: String,
}

pub fn create_state() -> Result<Arc<State>> {
    let config_path = args()
        .nth(1)
        .ok_or(anyhow!("first argument (config path) missing"))?;
    let config: Config = serde_yaml_ng::from_str(&read_to_string(config_path)?)?;

    let cache_storage = jellykv::rocksdb::new(&config.cache_path)?;
    let db_storage = jellykv::rocksdb::new(&config.database_path)?;

    Ok(Arc::new(State {
        cache: Cache::new(Box::new(cache_storage), config.max_memory_cache_size),
        database: Arc::new(db_storage),
        session_key: SessionKey::parse(&config.session_key)?,
        config,
    }))
}