import { Injectable } from '@angular/core';
import { HttpClient } from "@angular/common/http";
import { Observable, from } from "rxjs";

import { Season } from '../models/season.model';

import { ServerEndpointService } from './server-endpoint.service';

@Injectable({
  providedIn: 'root'
})

export class SeasonsService {
  seasons: Season[] = [];
  useTestData: boolean = false;

  constructor(
    private httpClient: HttpClient,
    private serverEndpointService: ServerEndpointService,
    ) 
    {}

  private convertToClientSeason(data: any): Season {
    let _season = new Season();
    _season.id = data.id.toString();
    _season.title = data.title;
    _season.subTitle = data.subTitle;
    _season.startingDate = new Date(data.startingDate);
    _season.racers = [];
    _season.races = data.races;
    _season.standings = data.standings;
    console.log(_season);
    return _season;
  }

  getAllSeasons(): Observable<Array<Season>> {
      if(this.useTestData) {
        return this.httpClient.get<Array<Season>>("assets/Seasons.json");
      }

      let promise = new Promise<Array<Season>>((resolve, reject) =>{
        this.httpClient.get<Array<Season>>(this.serverEndpointService.getCurrentEndpoint()+"seasons/").subscribe(data => {
          let seasons: Season[] = [];
          for(let server_season of data) {
            let _season = this.convertToClientSeason(server_season);
            seasons.push(_season)
            console.log(_season)
            console.log(server_season)
          }
          resolve(seasons);
          //reject(undefined);
        });
      });
      return from(promise);
  }

  getSeason(id: string): Observable<Season | undefined> {
    if(this.useTestData) {
      let promise = new Promise<Season|undefined>((resolve, reject) =>{
        this.httpClient.get<Array<Season>>("assets/Seasons.json").subscribe(data => {
          for(let season of data) {
            if(season.id.toString() == id) {
              resolve(season);
            }
          }
          reject(undefined);
        });
      });
      return from(promise);
    }

    let promise = new Promise<Season|undefined>((resolve, reject) =>{
      this.httpClient.get<Array<Season>>(this.serverEndpointService.getCurrentEndpoint()+"seasons/"+id).subscribe(data => {
        let _season = this.convertToClientSeason(data);
        console.log(data);
        console.log(_season);
        resolve(_season);
      });
    });
    return from(promise);
  }

  create(title: string, subTitle: string, startingDate: Date) {
    return this.httpClient.post(this.serverEndpointService.getCurrentEndpoint()+"seasons/create", {title, subTitle, startingDate});
  }

  updateSeason(id: string) {
    this.httpClient.get(this.serverEndpointService.getCurrentEndpoint()+"seasons/"+id+"/refresh").subscribe(data => { });
  }
}