/*
 Copyright 2013 Red Hat, Inc. and/or its affiliates.

 This file is part of lightblue.

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation, either version 3 of the License, or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.redhat.lightblue.eval;

import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.node.JsonNodeFactory;
import com.redhat.lightblue.metadata.EntityMetadata;
import com.redhat.lightblue.metadata.PredefinedFields;
import com.redhat.lightblue.metadata.TypeResolver;
import com.redhat.lightblue.metadata.parser.Extensions;
import com.redhat.lightblue.metadata.parser.JSONMetadataParser;
import com.redhat.lightblue.metadata.types.DefaultTypes;
import com.redhat.lightblue.query.Projection;
import com.redhat.lightblue.query.QueryExpression;
import com.redhat.lightblue.query.UpdateExpression;
import com.redhat.lightblue.util.JsonDoc;
import com.redhat.lightblue.util.JsonUtils;
import com.redhat.lightblue.util.test.AbstractJsonNodeTest;
import com.redhat.lightblue.TestDataStoreParser;

public class EvalTestContext extends AbstractJsonNodeTest {

    EvalTestContext context;

    private static final JsonNodeFactory factory = JsonNodeFactory.withExactBigDecimals(true);

    public static JsonDoc getDoc(String fname) throws Exception {
        JsonNode node = loadJsonNode(fname);
        return new JsonDoc(node);
    }

    public static EntityMetadata getMd(String fname) throws Exception {
        JsonNode node = loadJsonNode(fname);
        Extensions<JsonNode> extensions = new Extensions<>();
        extensions.addDefaultExtensions();
        extensions.registerDataStoreParser("mongo", new TestDataStoreParser<JsonNode>());
        TypeResolver resolver = new DefaultTypes();
        JSONMetadataParser parser = new JSONMetadataParser(extensions, resolver, factory);
        EntityMetadata md = parser.parseEntityMetadata(node);
        PredefinedFields.ensurePredefinedFields(md);
        return md;
    }

    public static QueryExpression queryExpressionFromJson(String s) throws Exception {
        return QueryExpression.fromJson(JsonUtils.json(s.replace('\'', '\"')));
    }

    public static UpdateExpression updateExpressionFromJson(String s) throws Exception {
        return UpdateExpression.fromJson(JsonUtils.json(s.replace('\'', '\"')));
    }

    public static Projection projectionFromJson(String s) throws Exception {
        return Projection.fromJson(JsonUtils.json(s.replace('\'', '\"')));
    }

    private EvalTestContext() {

    }
}