#[macro_use]
extern crate log;
#[macro_use]
extern crate failure;
#[macro_use]
extern crate smart_default;
#[macro_use]
extern crate serde;
#[macro_use]
use elefren::{
    helpers::cli,
    prelude::*,
    http_send::HttpSender,
};

use failure::Fallible;
use crate::bootstrap::Config;
use crate::store::Store;

mod bootstrap;
mod store;

type EleRegistratered = elefren::registration::Registered<HttpSender>;

/// Wrapper for the long tuple with Registration state
#[derive(Serialize,Deserialize,Debug)]
struct ElefrenRegistration {
    parts: (String, String, String, String, Scopes, bool),
}

const KEY_OAUTH_REGISTRATION: &str = "elefren.registration";
const KEY_OAUTH_SESSION: &str = "elefren.session";

fn main() {
    let config : Config = bootstrap::init().expect("error init config");

    debug!("Loaded config: {:#?}", config);

    let mut store = Store::from_file(&config.store);
    store.set_autosave(true);

    let registered = register(&mut store, &config);

    let mastodon = open_session(&mut store, registered);

    println!(
        "{:?}",
        mastodon
            .get_home_timeline().expect("error get TL")
            .items_iter()
            .take(100)
            .map(|item| {
                format!("{}: {}", item.account.acct, item.content)
            })
            .collect::<Vec<String>>()
    );
}

fn register(store : &mut Store, config : &Config) -> EleRegistratered {
    match store.get::<ElefrenRegistration>(KEY_OAUTH_REGISTRATION) {
        Some(reg) => {
            info!("Loaded registration from store");

            EleRegistratered::from_parts(
                // this sucks
                &reg.parts.0, &reg.parts.1, &reg.parts.2, &reg.parts.3, reg.parts.4, reg.parts.5
            )
        }
        None => {
            info!("Creating a new registration");

            let registered = Registration::new(&config.instance)
                .client_name("manabu")
                .build().expect("error register");
            store.put(KEY_OAUTH_REGISTRATION, ElefrenRegistration { parts : registered.clone().into_parts() });
            registered
        }
    }
}

fn open_session(store : &mut Store, registered: EleRegistratered) -> Mastodon<HttpSender> {
    match store.get::<elefren::Data>(KEY_OAUTH_SESSION) {
        Some(data) => {
            info!("Reusing saved authorization.");

            let cli = Mastodon::from(data);
            // TODO check if the session is live, somehow
            cli
        }
        None => {
            info!("Creating new authorization.");

            let cli = cli::authenticate(registered).expect("error auth");
            store.put(KEY_OAUTH_SESSION, cli.data.clone());
            cli
        }
    }
}