#[macro_use]
extern crate serde_derive;
#[macro_use]
extern crate log;

extern crate reqwest;
extern crate serde;
extern crate simple_logger;
extern crate kuchiki;

use std::collections::HashMap;
use reqwest::header::{Headers, UserAgent};
use kuchiki::traits::*;

#[derive(Deserialize)]
struct Realm {
    v: String,
}

#[derive(Deserialize)]
struct Champion {
    data: HashMap<String, ChampInfo>
}

#[derive(Deserialize)]
struct ChampInfo {
    id: String,
}

const USER_AGENT: &str = "Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0";

fn main() {
    simple_logger::init_with_level(log::Level::Info).unwrap();

    info!("CGG Item Sets");

    let mut headers = Headers::new();
    headers.set(UserAgent::new(USER_AGENT));

    let client = reqwest::Client::builder().default_headers(headers).build().unwrap();

    let realm: Realm = client.get("https://ddragon.leagueoflegends.com/realms/euw.json").send().unwrap().json().unwrap();
    info!("LoL version: {}", realm.v);

    let champion: Champion = client.get(&format!("https://ddragon.leagueoflegends.com/cdn/{}/data/en_US/champion.json", realm.v)).send().unwrap().json().unwrap();
    info!("LoL numbers of champs: {}", champion.data.len());

    let (champs, patch) = get_champs_with_positions_and_patch(client);

    info!("CGG version: {}", patch);
    info!("CGG numbers of champs: {}", champs.len());

    for (name, positions) in champs {
        info!("Champ: {}", name);
        for pos in positions {
            info!("{}", pos);
        }
    }
}

fn get_champs_with_positions_and_patch(client: reqwest::Client) -> (HashMap<String, Vec<String>>, String) {
    let page = client.get("https://champion.gg").send().unwrap().text().unwrap();
    let document = kuchiki::parse_html().one(page);

    let strong = document.select(".analysis-holder").unwrap().next().unwrap().as_node().select("strong").unwrap().next().unwrap().as_node().first_child().unwrap();
    let patch = strong.as_text().unwrap().borrow();

    let mut champions = HashMap::new();
    for css_match in document.select(".champ-height").unwrap() {
        let div = css_match.as_node();
        let champ_span = div.select(".champion-name").unwrap().next().unwrap().as_node().first_child().unwrap();
        let name = champ_span.as_text().unwrap().borrow();

        let mut positions = Vec::new();
        for link_match in div.select("a").unwrap().skip(1) {
            let attributes = link_match.attributes.borrow();
            let pos = attributes.get("href").unwrap().split("/").last().unwrap();
            positions.push(format!("{}", pos));
        }

        champions.insert(format!("{}", name), positions);
    }
    
    (champions, format!("{}", patch))
}