extern crate indexmap;
extern crate lazy_static;
extern crate log;
extern crate regex;
extern crate reqwest;
extern crate select;
extern crate serde;
extern crate serde_json;
extern crate simple_logger;
extern crate winreg;

use indexmap::IndexMap;
use serde_json::Value;
use std::fs;
use std::path::PathBuf;

#[derive(Serialize, Deserialize)]
struct ItemSet {
    title: String,
    #[serde(rename = "type")]
    type_: String,
    map: String,
    mode: String,
    priority: bool,
    sortrank: u32,
    blocks: Vec<Value>,
}

const CONSUMABLES: [u32; 9] = [2003, 2004, 2055, 2031, 2032, 2033, 2138, 2140, 2139];
const TRINKETS: [u32; 3] = [3340, 3364, 3363];
const ITEM_TYPES: &'static [(&str, [&str; 2]); 4] = &[
    ("Most Frequent Starters", ["firstItems", "mostGames"]),
    (
        "Highest Win % Starters",
        ["firstItems", "highestWinPercent"],
    ),
    ("Most Frequent Core Build", ["items", "mostGames"]),
    ("Highest Win % Core Build", ["items", "highestWinPercent"]),
];

pub trait DataSource {
    fn get_champs_with_positions_and_patch(
        client: &reqwest::Client,
    ) -> (IndexMap<String, Vec<String>>, String);
    fn get_champ_data(id: &str, position: &str, client: &reqwest::Client) -> Option<Value>;

    fn make_item_set(data: &Value, label: &str) -> Value {
        json!({
        "items": data["items"].as_array().unwrap().iter().map(|x| json!({"id": x["id"].as_str(), "count": 1})).collect::<Vec<Value>>(),
        "type": format!("{} ({:.2}% - {} games)", label, data["winPercent"].as_f64().unwrap() * 100., data["games"].as_u64().unwrap())
    })
    }

    fn make_item_set_from_list(list: &Vec<u32>, label: &str, key: &str, data: &Value) -> Value {
        let mut key_order = String::new();
        if !data["skills"].get("skillInfo").is_none() {
            key_order = data["skills"][key]["order"]
                .as_array()
                .unwrap()
                .iter()
                .map(|x| {
                    data["skills"]["skillInfo"].as_array().unwrap()
                        [x.as_str().unwrap().parse::<usize>().unwrap() - 1]["key"]
                        .as_str()
                        .unwrap()
                })
                .collect::<Vec<&str>>()
                .join(".");
        }
        json!({
        "items": list.iter().map(|x| json!({"id": x.to_string(), "count": 1})).collect::<Vec<Value>>(),
        "type": format!("{} {}", label, key_order)
    })
    }
    fn write_item_set(
        id: &str,
        name: &str,
        pos: &str,
        ver: &str,
        path: &PathBuf,
        client: &reqwest::Client,
    ) {
        info!("Retrieving data for {} at {}", name, pos);
        let data = Self::get_champ_data(id, pos, client);

        match data {
            Some(data) => {
                let mut item_set = ItemSet {
                    title: format!(
                        "CGG {} {} - {:.2}%",
                        pos,
                        ver,
                        data["stats"]["winRate"].as_f64().unwrap() * 100.
                    ),
                    type_: "custom".to_string(),
                    map: "any".to_string(),
                    mode: "any".to_string(),
                    priority: false,
                    sortrank: 0,
                    blocks: vec![],
                };

                for (label, path) in ITEM_TYPES.iter() {
                    if !data[&path[0]].get(&path[1]).is_none() {
                        item_set
                            .blocks
                            .push(Self::make_item_set(&data[&path[0]][&path[1]], label));
                    }
                }

                item_set.blocks.push(Self::make_item_set_from_list(
                    &CONSUMABLES.to_vec(),
                    "Consumables | Frequent:",
                    "mostGames",
                    &data,
                ));
                item_set.blocks.push(Self::make_item_set_from_list(
                    &TRINKETS.to_vec(),
                    "Trinkets | Wins:",
                    "highestWinPercent",
                    &data,
                ));

                info!("Writing item set for {} at {}", name, pos);
                fs::write(
                    path.join(format!("CGG_{}_{}.json", id, pos)),
                    serde_json::to_string_pretty(&item_set).unwrap(),
                ).unwrap();
            }
            None => {
                error!("Can't get data for {} at {}", id, pos);
            }
        }
    }
}