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/*
 * The MIT License (MIT)
 *
 * Copyright (c) 2016-2024 Objectionary.com
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package org.eolang.jeo.representation.asm;

import java.util.List;
import java.util.stream.Collectors;
import org.eolang.jeo.representation.ClassName;
import org.eolang.jeo.representation.bytecode.BytecodeAttributes;
import org.eolang.jeo.representation.bytecode.BytecodeClass;
import org.eolang.jeo.representation.bytecode.BytecodeClassProperties;
import org.eolang.jeo.representation.bytecode.BytecodeField;
import org.eolang.jeo.representation.bytecode.BytecodeMethod;
import org.eolang.jeo.representation.bytecode.InnerClass;
import org.objectweb.asm.tree.ClassNode;

/**
 * ASM bytecode parser for a class.
 * @since 0.6
 */
public final class AsmClass {

    /**
     * Class node.
     */
    private final ClassNode node;

    /**
     * Constructor.
     * @param node Class node.
     */
    AsmClass(final ClassNode node) {
        this.node = node;
    }

    /**
     * Convert asm class to domain class.
     * @return Domain class.
     */
    public BytecodeClass bytecode() {
        final ClassName full = new ClassName(this.node.name);
        return new BytecodeClass(
            full.name(),
            this.methods(),
            this.fields(),
            new AsmAnnotations(this.node).bytecode(),
            this.attributes(),
            new BytecodeClassProperties(
                this.node.version,
                this.node.access,
                this.node.signature,
                this.node.superName,
                this.node.interfaces.toArray(new String[0])
            )
        );
    }

    /**
     * Convert asm field to domain field.
     * @return Domain field.
     */
    private List fields() {
        return this.node.fields.stream()
            .map(AsmField::new)
            .map(AsmField::bytecode)
            .collect(Collectors.toList());
    }

    /**
     * Convert asm methods to domain methods.
     * @return Domain methods.
     */
    private List methods() {
        return this.node.methods.stream()
            .map(AsmMethod::new)
            .map(AsmMethod::bytecode)
            .collect(Collectors.toList());
    }

    /**
     * Retrieve domain attributes from asm class.
     * @return Domain attributes.
     */
    private BytecodeAttributes attributes() {
        return new BytecodeAttributes(
            this.node.innerClasses.stream().map(
                clazz -> new InnerClass(
                    clazz.name,
                    clazz.outerName,
                    clazz.innerName,
                    clazz.access
                )
            ).collect(Collectors.toList())
        );
    }
}