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package io.split.engine.matchers;

import io.split.engine.evaluator.EvaluationContext;

import java.util.Map;

public class LessThanOrEqualToSemverMatcher implements Matcher {

    private final Semver _semVer;

    public LessThanOrEqualToSemverMatcher(String semVer) {
        _semVer = Semver.build(semVer);
    }

    @Override
    public boolean match(Object matchValue, String bucketingKey, Map attributes, EvaluationContext evaluationContext) {
        if (!(matchValue instanceof String) || _semVer == null) {
            return false;
        }
        Semver matchSemver = Semver.build(matchValue.toString());
        if (matchSemver == null) {
            return false;
        }

        return matchSemver.compare(_semVer) <= 0;
    }

    @Override
    public String toString() {
        StringBuilder bldr = new StringBuilder();
        bldr.append("<= semver ");
        bldr.append(_semVer.version());
        return bldr.toString();
    }

    @Override
    public int hashCode() {
        int result = 17;
        result = 31 * result + _semVer.hashCode();
        return result;
    }

    @Override
    public boolean equals(Object obj) {
        if (obj == null) return false;
        if (this == obj) return true;
        if (!(obj instanceof LessThanOrEqualToSemverMatcher)) return false;

        LessThanOrEqualToSemverMatcher other = (LessThanOrEqualToSemverMatcher) obj;

        return _semVer == other._semVer;
    }

}