// std
use std::fs::read_to_string;

// clap
use clap::{App, Arg};

// toml
use serde::Deserialize;

// egg-mode
use egg_mode::{
    Token,
    KeyPair,
    tweet::{
        user_timeline,
        Tweet,
    },
};

// tokio
use tokio::runtime::current_thread::block_on_all;

#[derive(Debug, Deserialize)]
pub struct Config {
    twitter: TwitterConfig,
}

#[derive(Debug, Deserialize)]
struct TwitterConfig {
    username: String,
    consumer_key: String,
    consumer_secret: String,
    access_key: String,
    access_secret: String,
}

impl Config {
    pub fn new() -> Config {
        let matches = App::new(env!("CARGO_PKG_NAME"))
                            .version(env!("CARGO_PKG_VERSION"))
                            .about("A Twitter to Mastodon bot")
                            .arg(Arg::with_name("config")
                                 .short("c")
                                 .long("config")
                                 .value_name("CONFIG_FILE")
                                 .help("TOML config file for scootaloo (default /usr/local/etc/scootaloo.toml)")
                                 .takes_value(true)
                                 .display_order(1))
                            .get_matches();

        let toml_file = matches.value_of("config").unwrap_or("/usr/local/etc/scootaloo.toml");
        let toml_config = read_to_string(toml_file).unwrap_or_else(|e|
            panic!("Cannot open config file {}: {}", toml_file, e)
        );

        let config: Config = toml::from_str(&toml_config).unwrap_or_else(|e|
            panic!("Cannot parse TOML file {}: {}", toml_file, e)
        );

        config
    }
}

pub fn run(config: Config) {
    let con_token = KeyPair::new(config.twitter.consumer_key, config.twitter.consumer_secret);
    let access_token = KeyPair::new(config.twitter.access_key, config.twitter.access_secret);

    let token = Token::Access {
        consumer: con_token,
        access: access_token,
    };

    let timeline = user_timeline(&config.twitter.username, false, false, &token)
                .with_page_size(200)
                .older(None);

    timeline.types();
}