/*
 * Copyright 2022, TeamDev. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Redistribution and use in source and/or binary forms, with or without
 * modification, must retain the above copyright notice and the following
 * disclaimer.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package io.spine.server.stand;

import com.google.common.collect.ImmutableCollection;
import io.spine.client.EntityStateWithVersion;
import io.spine.client.Query;
import io.spine.client.ResponseFormat;
import io.spine.server.entity.EntityRecord;
import io.spine.server.entity.QueryableRepository;

import java.util.Iterator;

import static com.google.common.collect.ImmutableList.toImmutableList;
import static com.google.common.collect.Streams.stream;
import static io.spine.validate.Validate.check;

/**
 * Processes the queries targeting {@link io.spine.server.entity.Entity Entity} objects.
 */
class EntityQueryProcessor implements QueryProcessor {

    private final QueryableRepository<?, ?> repository;

    EntityQueryProcessor(QueryableRepository<?, ?> repository) {
        this.repository = repository;
    }

    @Override
    public ImmutableCollection<EntityStateWithVersion> process(Query query) {
        check(query);
        // Specifically check the target until Validation generates code
        // for `(validate)` field option.
        // See: https://github.com/SpineEventEngine/validation/issues/59
        check(query.getTarget());
        var entities = query.all()
                       ? loadAll(query.responseFormat())
                       : loadByQuery(query);
        var result = stream(entities)
                .map(EntityQueryProcessor::toEntityState)
                .collect(toImmutableList());
        return result;
    }

    private Iterator<EntityRecord> loadByQuery(Query query) {
        var entities =
                repository.findRecords(query.filters(), query.responseFormat());
        return entities;
    }

    private Iterator<EntityRecord> loadAll(ResponseFormat format) {
        var entities = repository.findRecords(format);
        return entities;
    }

    private static EntityStateWithVersion toEntityState(EntityRecord record) {
        var result = EntityStateWithVersion.newBuilder()
                .setState(record.getState())
                .setVersion(record.getVersion())
                .build();
        return result;
    }
}

@@ -2785,32 +2785,16 @@
 tities =
-%0A               
  reposit

Improve code layout