Quiz Presenter

gistfile1.java

/**
 * Presenter created to show the quiz flow on a view.
 * Manages the Quiz LifeCycle
 *
 * @author Lucas Marino mailto:[email protected].
 */
public class QuizPresenter implements Presenter {


    // view where the model state is rendered
    private final PlayQuizView view;
    // Start Quiz interactor, provides me the Quiz to play
    private final StartQuizInteractor startQuizInteractor;
    // it is who manages the business rules
    private final QuizController quizController;
    private final GetQuizInteractor getQuizInteractor;

    // CountDowns: The three cycles
    private CountDownTimer startTimer;
    private CountDownTimer playTimer;
    private CountDownTimer endTimer;

    // prompt we are playing now
    private Prompt currentPrompt;
    // Model
    Quiz quiz;
    // User I'm trying to beat
    private User opponent;

    //the current loop I'm running
    private String currentLoop = QuizConstats.START_LOOP;

    // state management
    private boolean opponentAnswered;
    private boolean userAnswered;
    public long loopAccumulatedTime = 0;

    GameState gameState;


    public QuizPresenter(PlayQuizView view, StartQuizInteractor startQuizInteractor,
                         GetQuizInteractor getQuizInteractor) {
        if (startQuizInteractor == null) {
            throw new IllegalArgumentException("Constructor parameters cannot be null!!!");
        }
        this.startQuizInteractor = startQuizInteractor;
        this.getQuizInteractor = getQuizInteractor;
        this.quizController = new QuizController();
        this.view = view;
    }

    /**
     * Initializes the presenter by start retrieving the user list.
     */

    public void initialize() {
        this.loadQuiz();
    }

    /**
     * Ask for the quiz
     */
    private void loadQuiz() {
        this.hideViewRetry();
        this.showViewLoading();
        this.createQuizAndStartToPLay();
    }


    private void onTimeOut(long prompt) {
        if (!currentLoop.equals(QuizConstats.PLAY_LOOP) || prompt != currentPrompt.getPosition())
            return;
        view.lockButtons();
        userAnswered = true;

        // update the view
        view.updateResponse("TIMEOUT", loopAccumulatedTime,
                false, true);
        view.renderBubble();

        if (opponentAnswered) {
            view.updateOpponentResponse(true);
            view.renderOpponentBubble();
        }

        // If opponent already answered go to next loop, otherwise reschedule
        if (opponentAnswered) {
            playTimer.cancel();
            runEndLoop();
        } else {
            //reschedule response
        }
    }

    // User has seleted an option
    public void onOptionSelected(int prompt, int option) {
        view.lockButtons();
        userAnswered = true;
        // add the response
        quizController.addResponse(getMe().getId(), prompt, option,
                loopAccumulatedTime);
        // update the view
        view.updateResponse(currentPrompt.getOptions().get(option - 1).getText(), loopAccumulatedTime,
                quizController.isRight(prompt, option), true);
        view.renderBubble();

        if (opponentAnswered) {
            view.updateOpponentResponse(true);
            view.renderOpponentBubble();
        }

        // If opponent already answered go to next loop, otherwise reschedule
        if (opponentAnswered) {
            playTimer.cancel();
            runEndLoop();
        } else {
            //reschedule response
        }

    }

    // opponent has selected an option
    public void onOpponentSelected(int prompt, int option) {
        opponentAnswered = true;

        view.updateOpponentResponse(currentPrompt.getOptions().get(option - 1).getText(), loopAccumulatedTime,
                quizController.isRight(prompt, option), userAnswered);
        view.renderOpponentBubble();

        // If user already answered go to next loop, otherwise wait
        if (userAnswered) {
            Log.d("QUIZ", "onOpponentSelected, cancelling playTimer ");
            playTimer.cancel();
            runEndLoop();
        } else {
            // wait
        }
    }

    private boolean isMe(long userId) {
        return getMe().getId() == userId;
    }

    private void showViewLoading() {
        //TODO
    }

    private void hideViewLoading() {
        //TODO
    }

    private void showViewRetry() {
        //TODO
    }

    private void hideViewRetry() {
        //TODO
    }

    private void showErrorMessage(String errorBundle) {
        //TODO
    }

    private void createQuizAndStartToPLay() {
        this.startQuizInteractor.execute(getMe().getId(), startQuizCallback);
    }

    // manage the interactor result
    StartQuizInteractor.Callback startQuizCallback = new StartQuizInteractor.Callback() {

        @Override
        public void onLoaded(Quiz response) {

            quizController.setUpQuiz(response);
            quiz = response;
            opponent = quizController.getOpponent(getMe());

        }

        @Override
        public void onError(String error) {
            // show error message and retry
        }
    };

    public void runQuiz() {
        Log.d("QUIZ", "runQuiz");
        runPromptLoop();
    }

    private void runPromptLoop() {
        cleanState();
        Log.d("QUIZ", "runPromptLoop");
        if (quizController.hasNextPrompt()) {
            currentPrompt = quizController.getNextPrompt();

            Log.d("QUIZ", "starting countdown for step " + currentPrompt.getPosition() + " time " +
                    currentPrompt.getTimeout());

            prepareStartLoop();
            runStartLoop();
        } else {
            finish();
        }

    }


    /**
     * runs the prompt but with a time elapsed in seconds
     *
     * @param prompt
     * @param fixedTime
     */
    private void runPromptLoop(Prompt prompt, long fixedTime) {
        Log.d("QUIZ", "runPromptLoop");

        currentPrompt = prompt;

        if (fixedTime < QuizConstats.START_LOOP_TIME_SECONDS)
            runStartLoop(fixedTime);
        else if (fixedTime < QuizConstats.START_LOOP_TIME_SECONDS + currentPrompt.getTimeout())
            runPlayTimer(fixedTime - QuizConstats.START_LOOP_TIME_SECONDS);
        else if (fixedTime < QuizConstats.START_LOOP_TIME_SECONDS + currentPrompt.getTimeout()
                + QuizConstats.END_LOOP_TIME_SECONDS)
            runEndLoop(fixedTime - QuizConstats.START_LOOP_TIME_SECONDS - currentPrompt.getTimeout());
        else {
            // There are an error
        }

    }


    /**
     * start the Play prompt countdown without delay
     */
    private void runPlayTimer() {
        runPlayTimer(0);
    }

    /**
     * start the Play prompt countdown with fixedTime delay
     *
     * @param fixedTime : time it is supposed already pass
     */
    private void runPlayTimer(long fixedTime) {
        currentLoop = QuizConstats.PLAY_LOOP;
        loopAccumulatedTime = fixedTime;
        preparePlayLoop();
        playTimer.start();
    }


    /**
     * start the Play start Prompt countdown
     */
    private void runStartLoop() {
        runStartLoop(0);
    }

    /**
     * start the Play start Prompt countdown with fixedTime delay
     *
     * @param fixedTime : time it is supposed already pass
     */
    private void runStartLoop(long fixedTime) {
        currentLoop = QuizConstats.START_LOOP;
        loopAccumulatedTime = fixedTime;
        prepareStartLoop();
        startTimer.start();
    }

    private void runEndLoop() {
        runEndLoop(0);
    }

    /**
     * start the end loop with fixedTime delay
     *
     * @param fixedTime : time it is supposed already pass
     */
    private void runEndLoop(long fixedTime) {
        currentLoop = QuizConstats.END_LOOP;
        loopAccumulatedTime = fixedTime;
        prepareEndLoop();
        endTimer.start();
    }


    /**
     * Simulates the full prompt
     *
     * @param prompt
     */

    private void fastForwardPrompt(Prompt prompt) {
        cleanState();
        currentPrompt = prompt;
        fastForwardStartLoop((int) QuizConstats.START_LOOP_TIME_SECONDS);
        fastForwardPlayLoop(currentPrompt.getTimeout());
        fastForwardEndLoop(QuizConstats.END_LOOP_TIME_SECONDS);
    }


    /**
     * simulate the prompt until the tillTimeInSeconds
     *
     * @param prompt
     * @param tillTimeInSeconds
     */
    private void fastForwardPrompt(Prompt prompt, long tillTimeInSeconds) {
        cleanState();

        currentPrompt = prompt;

        Log.d("QUIZ", "starting countdown for step " + currentPrompt.getPosition() + " time " +
                currentPrompt.getTimeout());

        // should simulate full start loop
        if (tillTimeInSeconds > QuizConstats.START_LOOP_TIME_SECONDS) {
            // simulate the the full loop
            fastForwardStartLoop((int) QuizConstats.START_LOOP_TIME_SECONDS);
            tillTimeInSeconds -= (int) QuizConstats.START_LOOP_TIME_SECONDS;
        } else {
            // simulate until the time then return to start to play normally since now
            fastForwardStartLoop(tillTimeInSeconds);
            return;
        }

        // should simulate full start loop
        if (tillTimeInSeconds > currentPrompt.getTimeout()) {
            // simulate the the full loop
            fastForwardPlayLoop(currentPrompt.getTimeout());
            tillTimeInSeconds -= currentPrompt.getTimeout();
        } else {
            // simulate until the time then return to start to play normally since now
            fastForwardPlayLoop(tillTimeInSeconds);
            return;
        }

        // noting to simulate, last loop don nothing at now
        if (tillTimeInSeconds > QuizConstats.END_LOOP_TIME_SECONDS) {
            fastForwardEndLoop(tillTimeInSeconds);
        } else {
            // there are an error,
        }
    }

    /**
     * Prepares the Play loop, instantiates the countdown, and keep it ready to run
     *
     * @param tillTimeSeconds
     */
    private void fastForwardPlayLoop(long tillTimeSeconds) {
        int promptPosition = currentPrompt.getPosition();
        opponentAnswered = (tillTimeSeconds >= quizController.getUserTime(opponent.getId(), promptPosition))
                || tillTimeSeconds >= currentPrompt.getTimeout();
        userAnswered = (tillTimeSeconds >= quizController.getUserTime(getMe().getId(), promptPosition))
                || tillTimeSeconds >= currentPrompt.getTimeout();

        if (userAnswered) {
            view.updateResponse(quizController.getUserTextSelected(getMe().getId(),
                            promptPosition),
                    quizController.getUserTime(getMe().getId(), promptPosition),
                    quizController.wasRight(getMe().getId(), promptPosition), true);
            view.renderBubble();
        }

        if (opponentAnswered) {
            view.updateOpponentResponse(quizController.getUserTextSelected(opponent.getId(),
                            promptPosition),
                    quizController.getUserTime(opponent.getId(), promptPosition),
                    quizController.wasRight(opponent.getId(), promptPosition), userAnswered);
            view.renderOpponentBubble();
        }


    }

    private User getMe() {
        return UserManager.getInstance().getMe();
    }

    private void fastForwardStartLoop(long tillTimeInSec) {
        if (tillTimeInSec >= 2l) {
            showNewQuestionView(currentPrompt.getText());
        }
        if (tillTimeInSec >= QuizConstats.START_LOOP_TIME_SECONDS ) {
            createViewResponse();
            showNewOtionsView(currentPrompt.getOptions());
        }
    }

    private void fastForwardEndLoop(long tillTimeInSeconds) {
        //Do nothing at now
    }


    /**
     * Prepares the Play loop, instantiates the countdown, and keep it ready to run
     */
    private void preparePlayLoop() {
        playTimer = new CountDownTimer((currentPrompt.getTimeout() * 1000) - (loopAccumulatedTime * 1000), 1000) {

            public void onTick(long millisUntilFinished) {
                if (!currentLoop.equals(QuizConstats.PLAY_LOOP))
                    return;
                loopAccumulatedTime++;
                view.updateCountDown("seconds remaining: " + (currentPrompt.getTimeout() - loopAccumulatedTime) + "s");

                if (loopAccumulatedTime == quizController.getUserTime(opponent.getId(), currentPrompt.getPosition())) {
                    onOpponentSelected(currentPrompt.getPosition(),
                            quizController.getUserSelected(opponent.getId(), currentPrompt.getPosition()));
                }
            }

            public void onFinish() {
                if (!currentLoop.equals(QuizConstats.PLAY_LOOP))
                    return;
                loopAccumulatedTime++;
                quizController.onTimeOut(currentPrompt.getPosition());
                onTimeOut(currentPrompt.getPosition());
                Log.d("QUIZ", "time out step " + currentPrompt.getPosition());
                view.updateCountDown("timeout!");

            }
        };
    }


    private void prepareEndLoop() {
        endTimer = new CountDownTimer(QuizConstats.END_LOOP_TIME_MILLIS - loopAccumulatedTime * 1000, 1000) {
            public void onTick(long millisUntilFinished) {
                loopAccumulatedTime++;
            }

            public void onFinish() {
                loopAccumulatedTime++;
                runPromptLoop();
            }
        };
    }

    private void prepareStartLoop() {
        startTimer = new CountDownTimer(QuizConstats.START_LOOP_TIME_MILLIS - loopAccumulatedTime * 1000, 1000) {

            public void onTick(long millisUntilFinished) {
                loopAccumulatedTime++;
                if (loopAccumulatedTime == 2) {
                    showNewQuestionView(currentPrompt.getText());
                }
            }

            public void onFinish() {
                loopAccumulatedTime++;
                createViewResponse();
                showNewOtionsView(currentPrompt.getOptions());
                runPlayTimer();
            }
        };
    }


    /**
     * clean the saved state to be able to start to play a new prompt
     */
    private void cleanState() {
        view.cleanTimer();
        userAnswered = false;
        opponentAnswered = false;
        view.cleanPromptResult();
        view.hideOptions();
        loopAccumulatedTime = 0;
    }

    private void createViewResponse() {
        view.createResponse(false);
        view.createOpponentResponse(false);
        view.renderBubble();
        view.renderOpponentBubble();
    }

    private void showNewQuestionView(String text) {
        view.showQuestion(text);
    }

    private void showNewOtionsView(List<PromptOption> options) {
        // TODO do not pass the model to the view
        // iterate every optoin and send one message per option to the view
        view.updateButtons(currentPrompt);

    }

    private void finish() {
        view.showFinishScreen();
    }

    private void drawQuizFromThisState(GameState state) {
        while (quizController.hasNextPrompt()) {
            currentPrompt = quizController.getNextPrompt();

            if (state.shouldFullFastForward(currentPrompt)) {
                fastForwardPrompt(currentPrompt);
            } else {
                // fastForward just part of the prompt
                long promptAccumulatedTime = state.getAccumulatedTime(currentPrompt);
                fastForwardPrompt(currentPrompt, promptAccumulatedTime);
                runPromptLoop(currentPrompt, promptAccumulatedTime);
                break;
            }
        }
    }

    @Override
    public void resume() {
        // this is the pause state recovered from saved instance.
        if (gameState != null) {

            this.getQuizInteractor.execute(getMe().getId(), new GetQuizInteractor.Callback() {

                @Override
                public void onLoaded(Quiz response) {
                    // manage the interactor result
                    quizController.setUpQuiz(response);
                    quiz = response;
                    opponent = quizController.getOpponent(getMe());

                    //recover the state and simulate the time
                    Log.d("QUIZ", "cleaning screen");
                    view.cleanHistory();
                    // TODO, add the player responses here
                    int i = 0;
                    for (QuizResponse r : gameState.getUserAnswers()) {
                        i++;
                        quiz.addResponse(UserManager.getInstance().getMe().getId(), r, i);
                    }

                    gameState.forwadTo(System.currentTimeMillis(), quiz);

                    drawQuizFromThisState(gameState);

                }

                @Override
                public void onError(String error) {
                    // show error message and retry
                }
            });
        }
    }


    @Override
    public void pause() {

        gameState = new GameState();

        gameState.setCurrentLoop(currentLoop);
        gameState.setLoopAccumulatedTime(loopAccumulatedTime);
        gameState.setOpponentAnswered(opponentAnswered);
        gameState.setUserAnswered(userAnswered);
        gameState.setQuizId(quiz.getId());
        gameState.setTimeStamp(System.currentTimeMillis());
        gameState.setCurrentPromptId(currentPrompt.getPosition());
        for (QuizResponse r : quiz.getResponses().get(getMe().getId()).values()) {
            gameState.addUserResponse(r);
        }
        if (startTimer != null)
            startTimer.cancel();
        if (playTimer != null)
            playTimer.cancel();
        if (endTimer != null)
            endTimer.cancel();

        Log.d("QUIZ", "on Pause " + gameState.toString());
    }
}