use anyhow::{bail, Error};
use futures::*;

use proxmox::try_block;
use proxmox::api::RpcEnvironmentType;

use pbs_tools::auth::private_auth_key;

use proxmox_backup::server::{
    self,
    auth::default_api_auth,
    rest::*,
};
use proxmox_backup::tools::daemon;
use proxmox_backup::auth_helpers::*;
use proxmox_backup::config;

fn main() {
    proxmox_backup::tools::setup_safe_path_env();

    if let Err(err) = pbs_runtime::main(run()) {
        eprintln!("Error: {}", err);
        std::process::exit(-1);
    }
}

async fn run() -> Result<(), Error> {
    if let Err(err) = syslog::init(
        syslog::Facility::LOG_DAEMON,
        log::LevelFilter::Info,
        Some("proxmox-backup-api")) {
        bail!("unable to inititialize syslog - {}", err);
    }

    server::create_task_log_dirs()?;

    config::create_configdir()?;

    config::update_self_signed_cert(false)?;

    proxmox_backup::tools::create_run_dir()?;

    proxmox_backup::rrd::create_rrdb_dir()?;
    proxmox_backup::server::jobstate::create_jobstate_dir()?;
    proxmox_backup::tape::create_tape_status_dir()?;
    proxmox_backup::tape::create_drive_state_dir()?;
    proxmox_backup::tape::create_changer_state_dir()?;
    proxmox_backup::tape::create_drive_lock_dir()?;

    if let Err(err) = generate_auth_key() {
        bail!("unable to generate auth key - {}", err);
    }
    let _ = private_auth_key(); // load with lazy_static

    if let Err(err) = generate_csrf_key() {
        bail!("unable to generate csrf key - {}", err);
    }
    let _ = csrf_secret(); // load with lazy_static

    let mut config = server::ApiConfig::new(
        pbs_buildcfg::JS_DIR,
        &proxmox_backup::api2::ROUTER,
        RpcEnvironmentType::PRIVILEGED,
        default_api_auth(),
    )?;

    let mut commando_sock = server::CommandoSocket::new(server::our_ctrl_sock());

    config.enable_file_log(pbs_buildcfg::API_ACCESS_LOG_FN, &mut commando_sock)?;

    let rest_server = RestServer::new(config);

    // http server future:
    let server = daemon::create_daemon(
        ([127,0,0,1], 82).into(),
        move |listener, ready| {
            let incoming = proxmox_backup::tools::async_io::StaticIncoming::from(listener);
            Ok(ready
                .and_then(|_| hyper::Server::builder(incoming)
                    .serve(rest_server)
                    .with_graceful_shutdown(server::shutdown_future())
                    .map_err(Error::from)
                )
                .map(|e| {
                    if let Err(e) = e {
                        eprintln!("server error: {}", e);
                    }
                })
            )
        },
        "proxmox-backup.service",
    );

    server::write_pid(pbs_buildcfg::PROXMOX_BACKUP_API_PID_FN)?;
    daemon::systemd_notify(daemon::SystemdNotify::Ready)?;

    let init_result: Result<(), Error> = try_block!({
        server::register_task_control_commands(&mut commando_sock)?;
        commando_sock.spawn()?;
        server::server_state_init()?;
        Ok(())
    });

    if let Err(err) = init_result {
        bail!("unable to start daemon - {}", err);
    }

    server.await?;
    log::info!("server shutting down, waiting for active workers to complete");
    proxmox_backup::server::last_worker_future().await?;

    log::info!("done - exit server");

    Ok(())
}