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sphere-java-client
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package io.sphere.internal.request;

import com.google.common.base.Optional;
import io.sphere.client.*;
import io.sphere.internal.command.Command;
import io.sphere.client.filters.expressions.FilterExpression;
import io.sphere.client.model.QueryResult;
import io.sphere.client.model.SearchResult;
import io.sphere.client.shop.ApiMode;
import net.jcip.annotations.Immutable;
import org.codehaus.jackson.type.TypeReference;

import java.util.Locale;

/** Creates specialized requests based on basic GET and POST requests. */
@Immutable
public class RequestFactoryImpl implements RequestFactory {

    private final BasicRequestFactory basic;
    public RequestFactoryImpl(BasicRequestFactory basic) {
        this.basic = basic;
    }

    // -----------------
    // Read
    // -----------------

    @Override public  FetchRequest createFetchRequest(
            String url, Optional apiMode, TypeReference jsonParserTypeRef) {
        return new FetchRequestImpl(withApiMode(basic.createGet(url), apiMode), jsonParserTypeRef);
    }

    @Override public  FetchRequest createFetchRequestWithErrorHandling(
            String url, Optional apiMode, int handledErrorStatus, TypeReference jsonParserTypeRef) {
        return new FetchRequestWithErrorHandling(withApiMode(basic.createGet(url), apiMode), handledErrorStatus, jsonParserTypeRef);
    }

    @Override public  FetchRequest createFetchRequestBasedOnQuery(
            String url, Optional apiMode, TypeReference> jsonParserTypeRef) {
        return new FetchRequestBasedOnQuery(createQueryRequest(url, apiMode, jsonParserTypeRef));
    }

    @Override public  QueryRequest createQueryRequest(
            String url, Optional apiMode, TypeReference> jsonParserTypeRef) {
        return new QueryRequestImpl(withApiMode(basic.>createGet(url), apiMode), jsonParserTypeRef);
    }

    @Override public  SearchRequest createSearchRequest(
            String url, Optional apiMode, Iterable filters, TypeReference> jsonParserTypeRef, Locale locale) {
        return new SearchRequestImpl(withApiMode(basic.>createGet(url), apiMode), jsonParserTypeRef, locale).filter(filters);
    }

    // -----------------
    // Write
    // -----------------

    @Override public  CommandRequest createCommandRequest(
            String url, Command command, TypeReference jsonParserTypeRef) {
        return new CommandRequestImpl(basic.createPost(url), command, jsonParserTypeRef);
    }

    // -----------------
    // Delete
    // -----------------

    @Override
    public  DeleteRequest createDeleteRequest(String url, TypeReference jsonParserTypeRef) {
        return new DeleteRequestImpl(basic.createDelete(url), jsonParserTypeRef);
    }

    // -----------------------------------
    // API mode helper (staging / live)
    // -----------------------------------

    private  RequestHolder withApiMode(RequestHolder requestHolder, Optional apiMode) {
        return apiMode.isPresent() ?
                requestHolder.addQueryParameter("staged", apiMode.get() == ApiMode.Staged ? "true" : "false") :
                requestHolder;
    }
}