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package org.testcontainers.images.builder.traits;

import lombok.Getter;
import org.testcontainers.images.builder.Transferable;
import org.testcontainers.images.builder.dockerfile.DockerfileBuilder;

import java.util.function.Consumer;

/**
 * BuildContextBuilder's trait for Dockerfile-based resources.
 *
 */
public interface DockerfileTrait<
    SELF extends DockerfileTrait & BuildContextBuilderTrait & StringsTrait
> {
    default SELF withDockerfileFromBuilder(Consumer builderConsumer) {
        DockerfileBuilder builder = new DockerfileBuilder();

        builderConsumer.accept(builder);

        // return Transferable because we want to build Dockerfile's content lazily
        return ((SELF) this).withFileFromTransferable(
                "Dockerfile",
                new Transferable() {
                    @Getter(lazy = true)
                    private final byte[] bytes = builder.build().getBytes();

                    @Override
                    public long getSize() {
                        return getBytes().length;
                    }

                    @Override
                    public String getDescription() {
                        return "Dockerfile: " + builder;
                    }
                }
            );
    }
}