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A web service test double for all occasions
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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.
 */
/*
 * Copyright (C) 2017 Arjan Duijzer
 *
 * 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.JsonCreator;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.github.tomakehurst.wiremock.http.Body;
import com.github.tomakehurst.wiremock.http.Request;
import com.google.common.base.Function;
import com.google.common.base.Predicate;

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

import static com.google.common.collect.FluentIterable.from;

public class MultipartValuePattern implements ValueMatcher {

    public enum MatchingType { ALL, ANY }

    private final String name;
    private final Map headers;
    private final List> bodyPatterns;
    private final MatchingType matchingType;

    @JsonCreator
    public MultipartValuePattern(@JsonProperty("name") String name,
                                 @JsonProperty("matchingType") MatchingType type,
                                 @JsonProperty("headers") Map headers,
                                 @JsonProperty("bodyPatterns") List> body) {
        this.name = name;
        this.matchingType = type;
        this.headers = headers;
        this.bodyPatterns = body;
    }

    @JsonIgnore
    public boolean isMatchAny() {
        return matchingType == MatchingType.ANY;
    }

    @JsonIgnore
    public boolean isMatchAll() {
        return matchingType == MatchingType.ALL;
    }

    @Override
    public MatchResult match(final Request.Part value) {
        if (headers != null || bodyPatterns != null) {
            return MatchResult.aggregate(
                    headers != null ? matchHeaderPatterns(value) : MatchResult.exactMatch(),
                    bodyPatterns != null ? matchBodyPatterns(value) : MatchResult.exactMatch()
            );
        }

        return MatchResult.exactMatch();
    }

    public MatchResult match(final Request request) {
        return isMatchAll() ?
            matchAllMultiparts(request) :
            matchAnyMultipart(request);
    }

    private MatchResult matchAllMultiparts(final Request request) {
        return from(request.getParts()).allMatch(new Predicate() {
            @Override
            public boolean apply(Request.Part input) {
                return MultipartValuePattern.this.match(input).isExactMatch();
            }
        }) ? MatchResult.exactMatch() : MatchResult.noMatch();
    }

    private MatchResult matchAnyMultipart(final Request request) {
        Collection parts = request.getParts();
        if (parts == null || parts.isEmpty()) {
            return MatchResult.noMatch();
        }

        return from(parts).anyMatch(new Predicate() {
            @Override
            public boolean apply(Request.Part input) {
                return MultipartValuePattern.this.match(input).isExactMatch();
            }
        }) ? MatchResult.exactMatch() : MatchResult.noMatch();
    }

    public String getName() {
        return name;
    }

    public Map getHeaders() {
        return headers;
    }



    public MatchingType getMatchingType() {
        return matchingType;
    }

    public List> getBodyPatterns() {
        return bodyPatterns;
    }

    private MatchResult matchHeaderPatterns(final Request.Part part) {
        if (headers != null && !headers.isEmpty()) {
            return MatchResult.aggregate(
                from(headers.entrySet())
                    .transform(new Function, MatchResult>() {
                        public MatchResult apply(Map.Entry headerPattern) {
                            return headerPattern.getValue().match(part.getHeader(headerPattern.getKey()));
                        }
                    }).toList()
            );
        }

        return MatchResult.exactMatch();
    }

    private MatchResult matchBodyPatterns(final Request.Part value) {
        return MatchResult.aggregate(
            from(bodyPatterns).transform(new Function() {
                @Override
                public MatchResult apply(ContentPattern bodyPattern) {
                    return matchBody(value, bodyPattern);
                }
            }).toList()
        );
    }

    private static MatchResult matchBody(Request.Part part, ContentPattern bodyPattern) {
        Body body = part.getBody();
        if (body == null) {
            return MatchResult.noMatch();
        }

        if (BinaryEqualToPattern.class.isAssignableFrom(bodyPattern.getClass())) {
            return ((BinaryEqualToPattern) bodyPattern).match(body.asBytes());
        }

        return ((StringValuePattern) bodyPattern).match(body.asString());
    }
}