mod appstate;
mod cli;
mod sharry;

use std::{
    process::exit,
    sync::{
        Arc,
        atomic::{AtomicBool, Ordering},
    },
};

use clap::Parser;
use log::{error, info};
use ureq::Agent;

use appstate::AppState;
use cli::Cli;

fn main() {
    let stop = Arc::new(AtomicBool::new(false));

    let stop_ctrlc = stop.clone();
    ctrlc::set_handler(move || {
        stop_ctrlc.store(true, Ordering::SeqCst);
        info!("stopping after chunk ...");
    })
    .expect("Error setting Ctrl-C handler");

    env_logger::init();

    let args = Cli::parse();
    info!("args: {args:?}");
    info!("timeout: {:?}", args.get_timeout());

    let agent: Agent = Agent::config_builder()
        .timeout_global(args.get_timeout())
        .build()
        .into();

    let mut state = match AppState::try_resume(&args) {
        Some(state) => state,
        None => AppState::from_args(&args, &agent).unwrap_or_else(|e| {
            error!("could not create new state: {e}");
            exit(1);
        }),
    };

    info!("continuing with state: {state:?}");
    state.save().unwrap();

    loop {
        match state.upload_chunk(&agent, args.chunk_size * 1024 * 1024) {
            Ok(None) => break,
            Err(e) => error!("error: {e:?}"),
            _ => (),
        }

        state.save().unwrap();

        stop.load(Ordering::SeqCst).then(|| exit(0));
    }

    info!("uploads done");
    state.clear().unwrap();
}