/**

 * Back 2 Browser Bytecode Translator

 * Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, version 2 of the License.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. Look for COPYING file in the top folder.

 * If not, see http://opensource.org/licenses/GPL-2.0.

 */

package org.apidesign.bck2brwsr.tck;

import java.lang.annotation.Annotation;

import java.lang.annotation.Retention;

import java.lang.annotation.RetentionPolicy;

import org.apidesign.bck2brwsr.vmtest.Compare;

import org.apidesign.bck2brwsr.vmtest.VMTest;

import org.testng.annotations.Factory;

/**

 *

 * @author Jaroslav Tulach <jaroslav.tulach@apidesign.org>

 */

public class ReflectionAnnotationTest {

    @Retention(RetentionPolicy.RUNTIME)

    @interface Ann {

        int integer() default 33;

        double dbl() default 33.3;

        String string() default "Ahoj";

        E enums() default E.B;

        Class<?> type() default String.class;

    }

    @interface AnnAnn {

        Ann ann() default @Ann(

            dbl = 44.4,

            enums = E.A,

            string = "Hi",

            integer = 44

        );

    }

    @Ann

    @AnnAnn

    class D {

        @Ann

        @AnnAnn

        public void method() {

        }

    }

    @Ann(type = String.class)

    @AnnAnn(ann = @Ann(string = "Ciao"))

    enum E {

        A, B

    };

    @Compare public String annoClass() throws Exception {

        Retention r = Ann.class.getAnnotation(Retention.class);

        assert r != null : "Annotation is present";

        assert r.value() == RetentionPolicy.RUNTIME : "Policy value is OK: " + r.value();

        return r.annotationType().getName();

    }

    @Compare public boolean isAnnotation() {

        return Ann.class.isAnnotation();

    }

    @Compare public boolean isNotAnnotation() {

        return String.class.isAnnotation();

    }

    @Compare public boolean isNotAnnotationEnum() {

        return E.class.isAnnotation();

    }

    @Compare public int intDefaultAttrIsRead() {

        return D.class.getAnnotation(Ann.class).integer();

    }

    @Compare public double doubleDefaultAttrIsRead() {

        return D.class.getAnnotation(Ann.class).dbl();

    }

    @Compare public String stringDefaultAttrIsRead() {

        return D.class.getAnnotation(Ann.class).string();

    }

    @Compare public String enumDefaultAttrIsRead() {

        return D.class.getAnnotation(Ann.class).enums().toString();

    }

    @Compare public String classDefaultAttrIsRead() {

        return D.class.getAnnotation(Ann.class).type().getName();

    }

    @Compare public String classAttrIsRead() {

        return E.class.getAnnotation(Ann.class).type().getName();

    }

//    @Compare public String defaultAnnotationAttrIsRead() {

//        final Ann ann = D.class.getAnnotation(AnnAnn.class).ann();

//        return ann.string() + ann.dbl() + ann.enums() + ann.integer() + ann.type();

//    }

//

//    @Compare public String annotationAttrIsRead() {

//        final Ann ann = E.class.getAnnotation(AnnAnn.class).ann();

//        return ann.string();

//    }

    private static String toClassNames(Object[] arr) {

        StringBuilder sb = new StringBuilder();

        sb.append("\n");

        for (Object o : arr) {

            if (o == null) {

                sb.append("null");

            } else if (o instanceof Ann) {

                sb.append("Ann");

            } else if (o instanceof AnnAnn) {

                sb.append("AnnAnn");

            }

            sb.append("\n");

        }

        return sb.toString();

    }

    @Compare

    public String twoAnnotations() {

        Annotation[] arr = D.class.getAnnotations();

        if (arr == null) {

            return "Null array";

        }

        return toClassNames(arr);

    }

    @Compare

    public String twoDeclaredAnnotations() {

        Annotation[] arr = D.class.getDeclaredAnnotations();

        if (arr == null) {

            return "Null array";

        }

        return toClassNames(arr);

    }

    @Compare

    public String twoAnnotationsOnMethod() throws Exception {

        Annotation[] arr = D.class.getMethod("method").getAnnotations();

        if (arr == null) {

            return "Null array";

        }

        return toClassNames(arr);

    }

    @Compare

    public String noAnnotation() {

        Annotation[] arr = ReflectionAnnotationTest.class.getAnnotations();

        if (arr == null) {

            return "Null array";

        }

        return toClassNames(arr);

    }

    @Compare

    public boolean noAnnotationSingle() {

        Annotation arr = ReflectionAnnotationTest.class.getAnnotation(Ann.class);

        return arr == null;

    }

    @Compare

    public boolean noAnnotationOnMethodSingle() throws Exception {

        Annotation arr = ReflectionAnnotationTest.class.getMethod("noAnnotationOnMethodSingle").getAnnotation(Ann.class);

        return arr == null;

    }

    @Compare

    public String noDeclaredAnnotation() {

        Annotation[] arr = ReflectionAnnotationTest.class.getDeclaredAnnotations();

        if (arr == null) {

            return "Null array";

        }

        return toClassNames(arr);

    }

    @Compare

    public String twoDeclaredAnnotationsOnMethod() throws Exception {

        Annotation[] arr = D.class.getMethod("method").getAnnotations();

        if (arr == null) {

            return "Null array";

        }

        return toClassNames(arr);

    }

    @Factory

    public static Object[] create() {

        return VMTest.create(ReflectionAnnotationTest.class);

    }

}