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package io.sphere.sdk.customobjects.queries;

import io.sphere.sdk.client.HttpRequestIntent;
import io.sphere.sdk.client.SphereRequestBase;
import io.sphere.sdk.customobjects.CustomObject;
import io.sphere.sdk.http.HttpResponse;
import io.sphere.sdk.queries.Get;

import javax.annotation.Nullable;
import java.util.function.Function;

import static io.sphere.sdk.http.HttpMethod.GET;
import static io.sphere.sdk.http.HttpStatusCode.NOT_FOUND_404;

/**
 * {@link io.sphere.sdk.client.SphereRequest} to fetch one {@link io.sphere.sdk.customobjects.CustomObject} by container and key but using a custom JSON mapper instead of the SDK default one.
 *
 * @param  The type of the value of the custom object.
 */
public abstract class CustomObjectCustomJsonMappingByKeyGet extends SphereRequestBase implements Get> {
    private final String container;
    private final String key;

    public CustomObjectCustomJsonMappingByKeyGet(final String container, final String key) {
        this.container = container;
        this.key = key;
    }

    @Override
    public HttpRequestIntent httpRequestIntent() {
        return HttpRequestIntent.of(GET, CustomObjectEndpoint.PATH + "/" + container + "/" + key);
    }

    @Nullable
    @Override
    public final CustomObject deserialize(final HttpResponse httpResponse) {
        final CustomObject result;
        if (httpResponse.getStatusCode() == NOT_FOUND_404) {
            result = null;
        } else {
            result = deserializeCustomObject().apply(httpResponse);
        }
        return result;
    }

    protected abstract Function> deserializeCustomObject();

    @Override
    public boolean canDeserialize(final HttpResponse httpResponse) {
        return httpResponse.hasSuccessResponseCode() || httpResponse.getStatusCode() == NOT_FOUND_404;
    }
}