/***
 * Excerpted from "Pragmatic Unit Testing in Java with JUnit, Third Edition",
 * published by The Pragmatic Bookshelf.
 * Copyrights apply to this code. It may not be used to create training material,
 * courses, books, articles, and the like. Contact us if you are in doubt.
 * We make no guarantees that this code is fit for any purpose.
 * Visit https://pragprog.com/titles/utj3 for more book information.
***/
package iloveyouboss;

import java.util.HashMap;
import java.util.Map;
import static iloveyouboss.Weight.REQUIRED;

public class Profile {
    private final Map<String,Answer> answers = new HashMap<>();
    private final String name;
    private int score;

    public Profile(String name) { this.name = name; }

    public void add(Answer... newAnswers) {
        for (var answer: newAnswers)
            answers.put(answer.questionText(), answer);
    }

    public boolean matches(Criteria criteria) {
        calculateScore(criteria);

        if (anyRequiredCriteriaNotMet(criteria)) return false;

        return anyMatches(criteria);
    }

    private boolean anyRequiredCriteriaNotMet(Criteria criteria) {
        return criteria.stream()
            .filter(criterion ->
                !criterion.isMatch(profileAnswerMatching(criterion)))
            .anyMatch(criterion -> criterion.weight() == REQUIRED);
    }

    private void calculateScore(Criteria criteria) {
        score = criteria.stream()
            .filter(criterion ->
                criterion.isMatch(profileAnswerMatching(criterion)))
            .mapToInt(criterion -> criterion.weight().value())
            .sum();
    }

    private boolean anyMatches(Criteria criteria) {
        return criteria.stream()
            .anyMatch(criterion ->
                criterion.isMatch(profileAnswerMatching(criterion)));
    }

    private Answer profileAnswerMatching(Criterion criterion) {
        return answers.get(criterion.questionText());
    }

    public int score() { return score; }

    @Override
    public String toString() { return name; }
}