GitMetadataImpl.java

/*
 * Copyright 2016 Red Hat, Inc. and/or its affiliates.
 *
 * 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 org.guvnor.structure.repositories.impl;

import java.util.ArrayList;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.function.Predicate;
import java.util.stream.Collectors;

import org.guvnor.structure.repositories.GitMetadata;
import org.guvnor.structure.repositories.PullRequest;
import org.jboss.errai.common.client.api.annotations.MapsTo;
import org.jboss.errai.common.client.api.annotations.Portable;

import static org.uberfire.commons.validation.PortablePreconditions.*;

/**
 * Represents information about a repository. It contains the origin name
 * the forks it has, the repository name,
 * and the list of pull request that repository has.
 */
@Portable
public class GitMetadataImpl implements GitMetadata {

    private String origin;
    private List<String> forks;
    private String name;
    private List<PullRequest> pullRequests;

    public GitMetadataImpl( String name ) {
        this( name, "", new ArrayList<>(), new ArrayList<>() );
    }

    public GitMetadataImpl( String name,
                            String origin ) {
        this( name, origin, new ArrayList<>(), new ArrayList<>() );
    }

    public GitMetadataImpl( String name,
                            List<String> forks ) {
        this( name, "", forks, new ArrayList<>() );
    }

    public GitMetadataImpl( String name,
                            String origin,
                            List<String> forks ) {
        this( name, origin, forks, new ArrayList<>() );
    }

    public GitMetadataImpl( @MapsTo("name") String name,
                            @MapsTo("origin") String origin,
                            @MapsTo("forks") List<String> forks,
                            @MapsTo("pullRequests") List<PullRequest> pullRequests ) {
        this.name = checkNotEmpty( "name", name );
        this.origin = checkNotNull( "origin", origin );
        this.forks = checkNotNull( "forks", forks );
        this.pullRequests = checkNotNull( "pullRequests", pullRequests );
    }

    @Override
    public String getName() {
        return name;
    }

    @Override
    public List<String> getForks() {
        return new ArrayList<>( forks );
    }

    @Override
    public String getOrigin() {
        return origin;
    }

    @Override
    public List<PullRequest> getPullRequests() {
        return new ArrayList<>( this.pullRequests );
    }

    @Override
    public List<PullRequest> getPullRequests( final Predicate<? super PullRequest> filter ) {
        final List<PullRequest> prs = this.getPullRequests();
        return prs.stream().filter( filter ).collect( Collectors.toList() );
    }

    @Override
    public PullRequest getPullRequest( long id ) {
        final List<PullRequest> prs = this.getPullRequests( elem -> elem.getId() == id );
        if ( prs.size() == 0 ) {
            throw new NoSuchElementException( "The Pull Request with ID #" + id + " not found" );
        }
        final PullRequest pr = prs.get( 0 );

        return new PullRequestImpl( pr.getId(), pr.getSourceRepository(), pr.getSourceBranch(), pr.getTargetRepository(), pr.getTargetBranch(), pr.getStatus() );

    }

    @Override
    public boolean exists( final PullRequest pullRequest ) {
        return this.getPullRequests().stream().anyMatch(
                pr -> {
                    return pr.getSourceBranch().equals( pullRequest.getSourceBranch() )
                            && pr.getSourceRepository().equals( pullRequest.getSourceRepository() )
                            && pr.getTargetBranch().equals( pullRequest.getTargetBranch() )
                            && pr.getTargetRepository().equals( pullRequest.getTargetRepository() )
                            && pr.getStatus().equals( pullRequest.getStatus() );

                } );
    }

}