/*
 * Copyright 2015 Red Hat, Inc. and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
*/

package org.drools.verifier;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.fail;

import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.Reader;
import java.util.Collection;
import java.util.Collections;
import java.util.jar.JarInputStream;

import org.drools.compiler.compiler.DrlParser;
import org.drools.compiler.compiler.DroolsParserException;
import org.drools.compiler.lang.descr.PackageDescr;
import org.drools.verifier.components.Field;
import org.drools.verifier.components.Variable;
import org.drools.verifier.components.VerifierComponentType;
import org.drools.verifier.data.VerifierData;
import org.drools.verifier.data.VerifierReportFactory;
import org.drools.verifier.visitor.PackageDescrVisitor;
import org.junit.Before;
import org.kie.internal.builder.conf.LanguageLevelOption;

public class TestBase {

    protected VerifierData verifierData;
    protected PackageDescrVisitor packageDescrVisitor;

    @Before
    public void setUp() throws Exception {
        verifierData = VerifierReportFactory.newVerifierData();
        packageDescrVisitor = new PackageDescrVisitor(verifierData,
                Collections.<JarInputStream>emptyList());
    }

    protected PackageDescr getPackageDescr(InputStream resourceAsStream) throws DroolsParserException {
        Reader drlReader = new InputStreamReader(resourceAsStream);
        return new DrlParser(LanguageLevelOption.DRL5).parse(drlReader);
    }

    protected void assertContainsVariable(String ruleName, String variableName) {
        Variable variable = verifierData.getVariableByRuleAndVariableName(ruleName,
                variableName);

        assertNotNull(String.format("Could not find Variable : %s ", variableName), variable);
    }

    protected void assertContainsField(String name) {
        Collection<Field> allFields = verifierData.getAll(VerifierComponentType.FIELD);

        for (Field field : allFields) {
            if (name.equals(field.getName())) {
                return;
            }
        }

        fail("Could not find Field");
    }

    protected void assertContainsFields(int amount) {
        Collection<Field> allFields = verifierData.getAll(VerifierComponentType.FIELD);

        assertEquals(amount, allFields.size());
    }
}