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/*
 * Copyright (C) 2011 Thomas Akehurst
 *
 * 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
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.tomakehurst.wiremock.matching;

import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.databind.annotation.JsonSerialize;
import com.github.tomakehurst.wiremock.common.Json;
import com.jayway.jsonpath.JsonPath;
import com.jayway.jsonpath.PathNotFoundException;

import java.util.Collection;
import java.util.Map;

import static com.github.tomakehurst.wiremock.common.LocalNotifier.notifier;

@JsonSerialize(using = JsonPathPatternJsonSerializer.class)
public class MatchesJsonPathPattern extends PathPattern {

    public MatchesJsonPathPattern(@JsonProperty("matchesJsonPath") String expectedJsonPath,
                                  StringValuePattern valuePattern) {
        super(expectedJsonPath, valuePattern);
    }

    public MatchesJsonPathPattern(String value) {
        this(value, null);
    }

    public String getMatchesJsonPath() {
        return expectedValue;
    }

    protected MatchResult isSimpleMatch(String value) {
        try {
            Object obj = JsonPath.read(value, expectedValue);

            boolean result;
            if (obj instanceof Collection) {
                result = !((Collection) obj).isEmpty();
            } else if (obj instanceof Map) {
                result = !((Map) obj).isEmpty();
            } else {
                result = obj != null;
            }

            return MatchResult.of(result);
        } catch (Exception e) {
            String error;
            if (e.getMessage().equalsIgnoreCase("invalid path")) {
                error = "the JSON path didn't match the document structure";
            } else if (e.getMessage().equalsIgnoreCase("invalid container object")) {
                error = "the JSON document couldn't be parsed";
            } else {
                error = "of error '" + e.getMessage() + "'";
            }

            String message = String.format(
                "Warning: JSON path expression '%s' failed to match document '%s' because %s",
                expectedValue, value, error);
            notifier().info(message);

            return MatchResult.noMatch();
        }

    }

    protected MatchResult isAdvancedMatch(String value) {
        Object obj = null;
        try {
            obj = JsonPath.read(value, expectedValue);
        } catch (PathNotFoundException pnfe) {
        } catch (Exception e) {
            String error;
            if (e.getMessage().equalsIgnoreCase("invalid container object")) {
                error = "the JSON document couldn't be parsed";
            } else {
                error = "of error '" + e.getMessage() + "'";
            }

            String message = String.format(
                "Warning: JSON path expression '%s' failed to match document '%s' because %s",
                expectedValue, value, error);
            notifier().info(message);

            return MatchResult.noMatch();
        }

        if (obj instanceof Number || obj instanceof String || obj instanceof Boolean) {
            value = String.valueOf(obj);
        } else if (obj instanceof Map || obj instanceof Collection) {
            value = Json.write(obj);
        } else {
            value = null;
        }

        return valuePattern.match(value);
    }
}