com.jcabi.github.mock.MkAssignees Maven / Gradle / Ivy

/**
 * Copyright (c) 2013-2014, jcabi.com
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met: 1) Redistributions of source code must retain the above
 * copyright notice, this list of conditions and the following
 * disclaimer. 2) Redistributions in binary form must reproduce the above
 * copyright notice, this list of conditions and the following
 * disclaimer in the documentation and/or other materials provided
 * with the distribution. 3) Neither the name of the jcabi.com nor
 * the names of its contributors may be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT
 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 */
package com.jcabi.github.mock;

import com.jcabi.aspects.Immutable;
import com.jcabi.github.Assignees;
import com.jcabi.github.Coordinates;
import com.jcabi.github.User;
import com.jcabi.xml.XML;
import java.io.IOException;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import javax.validation.constraints.NotNull;
import org.apache.commons.lang3.StringUtils;

/**
 * Mock for Github Assignees.
 *
 * @author Paul Polishchuk ([email protected])
 * @version $Id$
 * @since 0.7
 */
@Immutable
final class MkAssignees implements Assignees {

    /**
     * Storage.
     */
    private final transient MkStorage storage;

    /**
     * Login of the user logged in.
     */
    private final transient String self;

    /**
     * Repo name.
     */
    private final transient Coordinates coords;

    /**
     * Public ctor.
     * @param stg Storage
     * @param login User to login
     * @param rep Repo
     * @throws IOException If there is any I/O problem
     */
    MkAssignees(
        @NotNull(message = "stg can't be NULL") final MkStorage stg,
        @NotNull(message = "login can't be NULL") final String login,
        @NotNull(message = "rep can't be NULL") final Coordinates rep
    ) throws IOException {
        this.storage = stg;
        this.self = login;
        this.coords = rep;
    }

    @Override
    @NotNull(message = "Iterable of users is never NULL")
    public Iterable iterate() {
        try {
            final Set assignees = new HashSet();
            assignees.add(new MkUser(this.storage, this.self));
            final Iterable collaborators = new MkIterable(
                this.storage,
                String.format("%s/user", this.xpath()),
                new MkIterable.Mapping() {
                    @Override
                    public User map(final XML xml) {
                        try {
                            return new MkUser(
                                MkAssignees.this.storage,
                                xml.xpath("login/text()").get(0)
                            );
                        } catch (final IOException ex) {
                            throw new IllegalStateException(ex);
                        }
                    }
                }
            );
            for (final User collab : collaborators) {
                assignees.add(collab);
            }
            return assignees;
        } catch (final IOException ex) {
            throw new IllegalStateException(ex);
        }
    }

    @Override
    public boolean check(
        @NotNull(message = "login cannot be NULL") final String login
    ) {
        try {
            final List xpath = this.storage.xml().xpath(
                String.format("%s/user/login/text()", this.xpath())
            );
            return this.self.equalsIgnoreCase(login) || (
                !xpath.isEmpty()
                    && StringUtils.equalsIgnoreCase(login, xpath.get(0))
                );
        } catch (final IOException ex) {
            throw new IllegalStateException(ex);
        }
    }

    /**
     * XPath of the Collaborators element in the XML tree.
     * @return XPath
     */
    private String xpath() {
        return String.format(
            "/github/repos/repo[@coords='%s']/collaborators",
            this.coords
        );
    }
}