/*
 * Copyright (C) 2007-2010 Júlio Vilmar Gesser.
 * Copyright (C) 2011, 2013-2024 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.ast.body;

import static com.github.javaparser.utils.Utils.assertNotNull;

import com.github.javaparser.TokenRange;
import com.github.javaparser.ast.*;
import com.github.javaparser.ast.expr.AnnotationExpr;
import com.github.javaparser.ast.expr.SimpleName;
import com.github.javaparser.ast.nodeTypes.*;
import com.github.javaparser.ast.nodeTypes.modifiers.NodeWithAccessModifiers;
import com.github.javaparser.ast.observer.ObservableProperty;
import com.github.javaparser.ast.stmt.BlockStmt;
import com.github.javaparser.ast.type.ReferenceType;
import com.github.javaparser.ast.type.TypeParameter;
import com.github.javaparser.ast.visitor.CloneVisitor;
import com.github.javaparser.ast.visitor.GenericVisitor;
import com.github.javaparser.ast.visitor.VoidVisitor;
import com.github.javaparser.metamodel.ConstructorDeclarationMetaModel;
import com.github.javaparser.metamodel.JavaParserMetaModel;
import com.github.javaparser.resolution.Resolvable;
import com.github.javaparser.resolution.declarations.ResolvedConstructorDeclaration;
import java.util.Optional;
import java.util.function.Consumer;

/**
 * A constructor declaration: {@code class X { X() { } }} where X(){} is the constructor declaration.
 * <p>
 * <br>All annotations preceding the name will be set on this object, not on the class.
 * JavaParser doesn't know if it they are applicable to the method or the class.
 *
 * @author Julio Vilmar Gesser
 */
public class ConstructorDeclaration extends CallableDeclaration<ConstructorDeclaration>
        implements NodeWithBlockStmt<ConstructorDeclaration>,
                NodeWithAccessModifiers<ConstructorDeclaration>,
                NodeWithJavadoc<ConstructorDeclaration>,
                NodeWithSimpleName<ConstructorDeclaration>,
                NodeWithParameters<ConstructorDeclaration>,
                NodeWithThrownExceptions<ConstructorDeclaration>,
                NodeWithTypeParameters<ConstructorDeclaration>,
                Resolvable<ResolvedConstructorDeclaration> {

    private BlockStmt body;

    public ConstructorDeclaration() {
        this(
                null,
                new NodeList<>(),
                new NodeList<>(),
                new NodeList<>(),
                new SimpleName(),
                new NodeList<>(),
                new NodeList<>(),
                new BlockStmt(),
                null);
    }

    public ConstructorDeclaration(String name) {
        this(
                null,
                new NodeList<>(new Modifier()),
                new NodeList<>(),
                new NodeList<>(),
                new SimpleName(name),
                new NodeList<>(),
                new NodeList<>(),
                new BlockStmt(),
                null);
    }

    public ConstructorDeclaration(NodeList<Modifier> modifiers, String name) {
        this(
                null,
                modifiers,
                new NodeList<>(),
                new NodeList<>(),
                new SimpleName(name),
                new NodeList<>(),
                new NodeList<>(),
                new BlockStmt(),
                null);
    }

    public ConstructorDeclaration(
            NodeList<Modifier> modifiers,
            NodeList<AnnotationExpr> annotations,
            NodeList<TypeParameter> typeParameters,
            SimpleName name,
            NodeList<Parameter> parameters,
            NodeList<ReferenceType> thrownExceptions,
            BlockStmt body) {
        this(null, modifiers, annotations, typeParameters, name, parameters, thrownExceptions, body, null);
    }

    @AllFieldsConstructor
    public ConstructorDeclaration(
            NodeList<Modifier> modifiers,
            NodeList<AnnotationExpr> annotations,
            NodeList<TypeParameter> typeParameters,
            SimpleName name,
            NodeList<Parameter> parameters,
            NodeList<ReferenceType> thrownExceptions,
            BlockStmt body,
            ReceiverParameter receiverParameter) {
        this(null, modifiers, annotations, typeParameters, name, parameters, thrownExceptions, body, receiverParameter);
    }

    /**
     * This constructor is used by the parser and is considered private.
     */
    @Generated("com.github.javaparser.generator.core.node.MainConstructorGenerator")
    public ConstructorDeclaration(
            TokenRange tokenRange,
            NodeList<Modifier> modifiers,
            NodeList<AnnotationExpr> annotations,
            NodeList<TypeParameter> typeParameters,
            SimpleName name,
            NodeList<Parameter> parameters,
            NodeList<ReferenceType> thrownExceptions,
            BlockStmt body,
            ReceiverParameter receiverParameter) {
        super(
                tokenRange,
                modifiers,
                annotations,
                typeParameters,
                name,
                parameters,
                thrownExceptions,
                receiverParameter);
        setBody(body);
        customInitialization();
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.AcceptGenerator")
    public <R, A> R accept(final GenericVisitor<R, A> v, final A arg) {
        return v.visit(this, arg);
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.AcceptGenerator")
    public <A> void accept(final VoidVisitor<A> v, final A arg) {
        v.visit(this, arg);
    }

    @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
    public BlockStmt getBody() {
        return body;
    }

    /**
     * Sets the body
     *
     * @param body the body, can not be null
     * @return this, the ConstructorDeclaration
     */
    @Generated("com.github.javaparser.generator.core.node.PropertyGenerator")
    public ConstructorDeclaration setBody(final BlockStmt body) {
        assertNotNull(body);
        if (body == this.body) {
            return this;
        }
        notifyPropertyChange(ObservableProperty.BODY, this.body, body);
        if (this.body != null) this.body.setParentNode(null);
        this.body = body;
        setAsParentNodeOf(body);
        return this;
    }

    @Override
    public ConstructorDeclaration setModifiers(final NodeList<Modifier> modifiers) {
        return super.setModifiers(modifiers);
    }

    @Override
    public ConstructorDeclaration setName(final SimpleName name) {
        return super.setName(name);
    }

    @Override
    public ConstructorDeclaration setParameters(final NodeList<Parameter> parameters) {
        return super.setParameters(parameters);
    }

    @Override
    public ConstructorDeclaration setThrownExceptions(final NodeList<ReferenceType> thrownExceptions) {
        return super.setThrownExceptions(thrownExceptions);
    }

    @Override
    public ConstructorDeclaration setTypeParameters(final NodeList<TypeParameter> typeParameters) {
        return super.setTypeParameters(typeParameters);
    }

    /**
     * The declaration returned has this schema:
     * <p>
     * [accessSpecifier] className ([paramType [paramName]])
     * [throws exceptionsList]
     */
    @Override
    public String getDeclarationAsString(
            boolean includingModifiers, boolean includingThrows, boolean includingParameterName) {
        StringBuilder sb = new StringBuilder();
        if (includingModifiers) {
            AccessSpecifier accessSpecifier = getAccessSpecifier();
            sb.append(accessSpecifier.asString()).append(" ");
        }
        sb.append(getName());
        sb.append("(");
        boolean firstParam = true;
        for (Parameter param : getParameters()) {
            if (firstParam) {
                firstParam = false;
            } else {
                sb.append(", ");
            }
            if (includingParameterName) {
                sb.append(param.toString(prettyPrinterNoCommentsConfiguration));
            } else {
                sb.append(param.getType().toString(prettyPrinterNoCommentsConfiguration));
            }
        }
        sb.append(")");
        sb.append(appendThrowsIfRequested(includingThrows));
        return sb.toString();
    }

    /*
     * Returns the constructor descriptor
     */
    public String toDescriptor() {
        StringBuilder sb = new StringBuilder();
        sb.append('(');
        for (int i = 0; i < getParameters().size(); i++) {
            sb.append(getParameter(i).getType().toDescriptor());
        }
        return sb.append(")V").toString();
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.CloneGenerator")
    public ConstructorDeclaration clone() {
        return (ConstructorDeclaration) accept(new CloneVisitor(), null);
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.GetMetaModelGenerator")
    public ConstructorDeclarationMetaModel getMetaModel() {
        return JavaParserMetaModel.constructorDeclarationMetaModel;
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.ReplaceMethodGenerator")
    public boolean replace(Node node, Node replacementNode) {
        if (node == null) {
            return false;
        }
        if (node == body) {
            setBody((BlockStmt) replacementNode);
            return true;
        }
        return super.replace(node, replacementNode);
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
    public boolean isConstructorDeclaration() {
        return true;
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
    public ConstructorDeclaration asConstructorDeclaration() {
        return this;
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
    public void ifConstructorDeclaration(Consumer<ConstructorDeclaration> action) {
        action.accept(this);
    }

    @Override
    public ResolvedConstructorDeclaration resolve() {
        return getSymbolResolver().resolveDeclaration(this, ResolvedConstructorDeclaration.class);
    }

    @Override
    @Generated("com.github.javaparser.generator.core.node.TypeCastingGenerator")
    public Optional<ConstructorDeclaration> toConstructorDeclaration() {
        return Optional.of(this);
    }
}
