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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.client;

import com.github.tomakehurst.wiremock.common.Json;
import com.github.tomakehurst.wiremock.matching.RequestPattern;
import com.github.tomakehurst.wiremock.verification.diff.Diff;
import com.github.tomakehurst.wiremock.verification.LoggedRequest;
import com.github.tomakehurst.wiremock.verification.NearMiss;
import com.google.common.base.Joiner;

import java.util.List;

import static com.google.common.base.Functions.toStringFunction;
import static com.google.common.collect.FluentIterable.from;

public class VerificationException extends AssertionError {

	private static final long serialVersionUID = 5116216532516117538L;

	public VerificationException(String message) {
		super(message);
	}

    public static VerificationException forUnmatchedRequestPattern(Diff diff) {
        return new VerificationException("No requests exactly matched. Most similar request was:", diff);
    }

    public static VerificationException forSingleUnmatchedRequest(Diff diff) {
        return new VerificationException("A request was unmatched by any stub mapping. Closest stub mapping was:", diff);
    }

    public static VerificationException forUnmatchedNearMisses(List nearMisses) {
        if (nearMisses.size() == 1) {
            return forSingleUnmatchedRequest(nearMisses.get(0).getDiff());
        }

        return new VerificationException(nearMisses.size() +
            " requests were unmatched by any stub mapping. Shown with closest stub mappings:\n" +
            renderList(nearMisses));

    }

    private static String renderList(List list) {
        return Joiner.on("\n\n").join(
            from(list).transform(toStringFunction())
        );
    }

    private VerificationException(String messageStart, Diff diff) {
        super(messageStart + " " + diff.toString());
    }

    public VerificationException(RequestPattern expected, List requests) {
        super(String.format(
            "Expected at least one request matching: %s\nRequests received: %s",
            expected.toString(),
            Json.write(requests)));
    }

    public VerificationException(RequestPattern expected, int expectedCount, int actualCount) {
        super(String.format(
            "Expected exactly %d requests matching the following pattern but received %d:\n%s",
            expectedCount,
            actualCount,
            expected.toString()));
    }

    public VerificationException(RequestPattern expected, CountMatchingStrategy expectedCount, int actualCount) {
        super(String.format(
            "Expected %s requests matching the following pattern but received %d:\n%s",
            expectedCount.toString().toLowerCase(),
            actualCount,
            expected.toString()));
    }

    public static VerificationException forUnmatchedRequests(List unmatchedRequests) {
        if (unmatchedRequests.size() == 1) {
            return new VerificationException(String.format("A request was unmatched by any stub mapping. Request was: ",
                    unmatchedRequests.get(0)));
        }

        return new VerificationException(unmatchedRequests.size() +
                " requests were unmatched by any stub mapping. Requests are:\n" +
                renderList(unmatchedRequests));
    }
}