import {Injectable} from '@angular/core';
import {AppInfoOxService} from './app-info-ox.service';
import {FeedbackOxService} from './feedback-ox.service';
import {GameActionsService} from './game-actions.service';
import {AnswerService} from './answer.service';
import {LevelService} from './level.service';
import {PartCorrectness, UserAnswer} from 'ox-types';

@Injectable({
  providedIn: 'root'
})
export class EndGameService {
  private challengesCompleted: number;
  public sendEndEvent = true;
  private gameHasEnded: boolean;

  constructor(private gameActions: GameActionsService<any>,
              private appInfo: AppInfoOxService,
              private levelService: LevelService,
              private answerService: AnswerService,
              private feedbackService: FeedbackOxService) {
    this.gameActions.microLessonCompleted.subscribe(_ => {
      this.gameHasEnded = true;
    });
    this.feedbackService.endFeedback.subscribe(_ => {
      this.checkEnded();
    });
    this.feedbackService.surrenderEnd.subscribe(_ => {
      this.checkEnded();
    });
    this.gameActions.checkedAnswer.subscribe(correct => {
      const correctness = correct.correctness;
      if (correctness === 'correct' || (correctness === 'unknown')
        && ['results-without-correction', 'use'].includes(this.appInfo.microLessonInfo.creatorInfo?.metricsType)) {
        ++this.challengesCompleted;
      }
    });
    this.gameActions.surrender.subscribe(x => {
      ++this.challengesCompleted;
    });
    this.gameActions.restartGame.subscribe(x => {
      this.challengesCompleted = 0;
      this.gameHasEnded = false;
    });
    this.gameActions.startGame.subscribe(x => {
      this.challengesCompleted = 0;
      this.gameHasEnded = false;
    });
  }

  // TODO add lives, time and other possibles ends.
  private checkEnded() {
    if (this.gameIsEnded() && this.sendEndEvent && !this.gameHasEnded) {
      this.gameHasEnded = true;
      this.gameActions.microLessonCompleted.emit();
    }
  }

  public gameIsEnded(): boolean {
    const challengesType = this.appInfo
      .getChallengesModeAndValue(this.levelService.currentLevel.value);
    const totalChallenges = challengesType.value;
    return this.gameHasEnded || (totalChallenges !== undefined && this.challengesCompleted >= totalChallenges);
  }

  public getChallengeCompleteCount(): number {
    return this.challengesCompleted;
  }
}