/*
 * Copyright (C) 2015-2016 Federico Tomassetti
 * Copyright (C) 2017-2024 The JavaParser Team.
 *
 * This file is part of JavaParser.
 *
 * JavaParser can be used either under the terms of
 * a) the GNU Lesser General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 * b) the terms of the Apache License
 *
 * You should have received a copy of both licenses in LICENCE.LGPL and
 * LICENCE.APACHE. Please refer to those files for details.
 *
 * JavaParser 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 Lesser General Public License for more details.
 */

package com.github.javaparser.symbolsolver.reflectionmodel;

import static org.junit.jupiter.api.Assertions.*;

import com.github.javaparser.resolution.TypeSolver;
import com.github.javaparser.resolution.declarations.ResolvedDeclaration;
import com.github.javaparser.resolution.declarations.ResolvedMethodDeclaration;
import com.github.javaparser.resolution.model.SymbolReference;
import com.github.javaparser.symbolsolver.resolution.typesolvers.ReflectionTypeSolver;
import java.lang.annotation.Inherited;
import java.util.Collections;
import java.util.stream.Collectors;
import org.junit.jupiter.api.Test;

@interface OuterAnnotation {
    @interface InnerAnnotation {}
}

@interface WithValue {
    String value();
}

@interface WithField {
    int FIELD_DECLARATION = 0;
}

@Inherited
@interface InheritedAnnotation {}

class ReflectionAnnotationDeclarationTest {
    private TypeSolver typeSolver = new ReflectionTypeSolver(false);

    @Test
    void isClass() {
        ReflectionAnnotationDeclaration annotation = (ReflectionAnnotationDeclaration)
                typeSolver.solveType("com.github.javaparser.symbolsolver.reflectionmodel.OuterAnnotation");
        assertFalse(annotation.isClass());
    }

    @Test
    void innerIsClass() {
        ReflectionAnnotationDeclaration annotation = (ReflectionAnnotationDeclaration) typeSolver.solveType(
                "com.github.javaparser.symbolsolver.reflectionmodel.OuterAnnotation.InnerAnnotation");
        assertFalse(annotation.isClass());
    }

    @Test
    void getInternalTypes() {
        ReflectionAnnotationDeclaration annotation = (ReflectionAnnotationDeclaration)
                typeSolver.solveType("com.github.javaparser.symbolsolver.reflectionmodel.OuterAnnotation");
        assertEquals(
                Collections.singleton("InnerAnnotation"),
                annotation.internalTypes().stream()
                        .map(ResolvedDeclaration::getName)
                        .collect(Collectors.toSet()));
    }

    @Test
    void solveMethodForAnnotationWithValue() {
        ReflectionAnnotationDeclaration annotation =
                (ReflectionAnnotationDeclaration) typeSolver.solveType(WithValue.class.getCanonicalName());
        final SymbolReference<ResolvedMethodDeclaration> symbolReference =
                annotation.solveMethod("value", Collections.emptyList(), false);
        assertEquals("value", symbolReference.getCorrespondingDeclaration().getName());
    }

    @Test
    void getAllFields_shouldReturnTheCorrectFields() {
        ReflectionAnnotationDeclaration annotation = (ReflectionAnnotationDeclaration)
                typeSolver.solveType("com.github.javaparser.symbolsolver.reflectionmodel.WithField");
        assertEquals(
                Collections.singleton("FIELD_DECLARATION"),
                annotation.getAllFields().stream()
                        .map(ResolvedDeclaration::getName)
                        .collect(Collectors.toSet()));
    }

    @Test
    void getClassName_shouldReturnCorrectValue() {
        ReflectionAnnotationDeclaration annotation = (ReflectionAnnotationDeclaration)
                typeSolver.solveType("com.github.javaparser.symbolsolver.reflectionmodel.WithField");
        assertEquals("WithField", annotation.getClassName());
    }

    @Test
    void isAnnotationNotInheritable() {
        ReflectionAnnotationDeclaration annotation = (ReflectionAnnotationDeclaration)
                typeSolver.solveType("com.github.javaparser.symbolsolver.reflectionmodel.OuterAnnotation");
        assertFalse(annotation.isInheritable());
    }

    @Test
    void isAnnotationInheritable() {
        ReflectionAnnotationDeclaration annotation = (ReflectionAnnotationDeclaration)
                typeSolver.solveType("com.github.javaparser.symbolsolver.reflectionmodel.InheritedAnnotation");
        assertTrue(annotation.isInheritable());
    }
}
