use crate::ChampInfo;
use crate::Champion;
use indexmap::IndexMap;
use log::{error, info};
use serde_derive::{Deserialize, Serialize};
use serde_json::Value;
use std::fs;
use std::path::Path;

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

#[derive(Serialize, Deserialize, Debug)]
pub struct Build {
    #[serde(rename = "type")]
    pub type_: String,
    pub items: Vec<Item>,
}

#[derive(Serialize, Deserialize, Debug)]
pub struct Item {
    pub id: String,
    pub count: u8,
}

pub struct Stat {
    pub win_rate: f64,
    pub games: u32,
    pub kda: f64,
    pub patch: String,
}

pub trait DataSource {
    fn get_alias(&self) -> &str;

    fn get_timeout(&self) -> u64;

    fn get_champs_with_positions(&self, client: &ureq::Agent, champion: &Champion) -> IndexMap<u32, Vec<String>>;

    fn get_champ_data_with_win_pourcentage(
        &self,
        champ: &ChampInfo,
        positions: &[String],
        client: &ureq::Agent,
    ) -> Vec<(String, Vec<Value>, Stat)>;

    fn write_item_set(
        &self,
        champ: &ChampInfo,
        positions: &[String],
        path: &Path,
        client: &ureq::Agent,
    ) {
        info!(
            "{}: Retrieving data for {} at {}",
            self.get_alias(),
            champ.name,
            positions.join(", ")
        );
        let data = self.get_champ_data_with_win_pourcentage(champ, positions, client);

        let mut missing_roles = vec![];
        for pos in positions {
            let mut ok = false;
            for build in &data {
                if build.0 == *pos {
                    ok = true;
                    break;
                }
            }
            if !ok {
                missing_roles.push(pos.to_owned());
            }
        }
        if !missing_roles.is_empty() {
            error!(
                "{}: Can't get data for {} at {}",
                self.get_alias(),
                champ.id,
                missing_roles.join(", ")
            );
        }

        for build in data {
            let item_set = ItemSet {
                title: format!(
                    "{} {} {} - {:.2}% wins - {} games - {:.2} kda",
                    self.get_alias(),
                    build.0,
                    build.2.patch,
                    build.2.win_rate,
                    build.2.games,
                    build.2.kda
                ),
                type_: "custom".to_string(),
                map: "any".to_string(),
                mode: "any".to_string(),
                priority: false,
                sortrank: 0,
                blocks: build.1,
            };

            info!(
                "{}: Writing item set for {} at {}",
                self.get_alias(),
                champ.name,
                build.0
            );
            fs::write(
                path.join(format!(
                    "{}_{}_{}.json",
                    self.get_alias(),
                    champ.id,
                    build.0
                )),
                serde_json::to_string_pretty(&item_set).unwrap(),
            )
            .unwrap();
        }
    }
}