forked from yegor256/rultor
/
Understands.java
238 lines (228 loc) · 7.52 KB
/
Understands.java
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/*
* Copyright (c) 2009-2024 Yegor Bugayenko
* 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 rultor.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
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.rultor.agents.github;
import com.jcabi.aspects.Immutable;
import com.jcabi.github.Bulk;
import com.jcabi.github.Comment;
import com.jcabi.github.Github;
import com.jcabi.github.Issue;
import com.jcabi.github.Smarts;
import com.jcabi.log.Logger;
import com.jcabi.xml.XML;
import com.rultor.agents.AbstractAgent;
import com.rultor.agents.daemons.Home;
import com.rultor.spi.Profile;
import java.io.IOException;
import java.util.Collections;
import java.util.Date;
import java.util.Iterator;
import java.util.ResourceBundle;
import lombok.EqualsAndHashCode;
import lombok.ToString;
import org.cactoos.iterable.Joined;
import org.xembly.Directive;
import org.xembly.Directives;
/**
* Understands request.
*
* @since 1.3
*/
@Immutable
@ToString
@EqualsAndHashCode(callSuper = false, of = { "github", "question" })
@SuppressWarnings(
{
"PMD.CyclomaticComplexity",
"PMD.StdCyclomaticComplexity",
"PMD.ModifiedCyclomaticComplexity"
}
)
public final class Understands extends AbstractAgent {
/**
* Message bundle.
*/
private static final ResourceBundle PHRASES =
ResourceBundle.getBundle("phrases");
/**
* Github.
*/
private final transient Github github;
/**
* Question.
*/
private final transient Question question;
/**
* Ctor.
* @param ghub Github client
* @param qtn Question
*/
public Understands(final Github ghub, final Question qtn) {
super(
"/talk[@later='true']",
"/talk/wire[github-repo and github-issue]"
);
this.github = ghub;
this.question = qtn;
}
// @checkstyle ExecutableStatementCountCheck (50 lines)
// @checkstyle CyclomaticComplexityCheck (100 lines)
@Override
public Iterable<Directive> process(final XML xml) throws IOException {
final Issue.Smart issue = new TalkIssues(this.github, xml).get();
final Iterator<Comment.Smart> comments = new SafeIterator<>(
new Smarts<Comment.Smart>(
new Joined<Comment>(
Collections.singleton(new FirstComment(issue)),
new Bulk<>(issue.comments().iterate(new Date(0L)))
)
).iterator()
);
final int seen = Understands.seen(xml);
int next = seen;
int fresh = 0;
int total = 0;
Req req = Req.EMPTY;
while (comments.hasNext()) {
final Comment.Smart comment = comments.next();
++total;
if (comment.number() <= seen) {
continue;
}
++fresh;
req = this.parse(comment, xml);
if (req.equals(Req.LATER)) {
break;
}
next = comment.number();
if (!req.equals(Req.EMPTY)) {
break;
}
}
if (next < seen) {
throw new IllegalStateException(
String.format(
"Comment #%d is younger than #%d, something is very wrong",
next, seen
)
);
}
final Directives dirs = new Directives();
if (req.equals(Req.EMPTY)) {
Logger.info(
this, "nothing new in %s#%d, fresh/total: %d/%d",
issue.repo().coordinates(), issue.number(), fresh, total
);
} else if (req.equals(Req.DONE)) {
Logger.info(
this, "simple request in %s#%d",
issue.repo().coordinates(), issue.number()
);
} else if (req.equals(Req.LATER)) {
Logger.info(
this, "temporary pause in %s#%d, at message #%d",
issue.repo().coordinates(), issue.number(), next
);
} else if (xml.xpath(String.format("//archive/log[@id='%d']", next))
.isEmpty()) {
dirs.xpath("/talk/request").remove()
.xpath("/talk[not(request)]").strict(1)
.add("request")
.attr("id", Integer.toString(next))
.append(req.dirs());
} else {
Logger.error(
this, "We have seen this conversation already: %d",
next
);
}
if (next > seen) {
dirs.xpath("/talk/wire")
.addIf("github-seen")
.set(Integer.toString(next));
}
return dirs.xpath("/talk")
.attr("later", Boolean.toString(!req.equals(Req.EMPTY)));
}
/**
* Understand.
* @param comment Comment
* @param xml XML
* @return Req
* @throws IOException If fails
*/
private Req parse(final Comment.Smart comment, final XML xml)
throws IOException {
Req req;
try {
req = this.question.understand(
comment,
new Home(xml, Integer.toString(comment.number())).uri()
);
} catch (final Profile.ConfigException ex) {
new Answer(comment).post(
false,
String.format(
Understands.PHRASES.getString("Understands.broken-profile"),
Understands.rootCause(ex)
)
);
req = Req.EMPTY;
}
return req;
}
/**
* Last seen message.
* @param xml XML
* @return Number
*/
private static int seen(final XML xml) {
final int seen;
if (xml.nodes("/talk/wire/github-seen").isEmpty()) {
seen = 0;
} else {
seen = Integer.parseInt(
xml.xpath("/talk/wire/github-seen/text()").get(0)
);
}
return seen;
}
/**
* Root cause exception message.
* @param exception Error
* @return Message
*/
private static String rootCause(final Profile.ConfigException exception) {
Throwable root = exception;
while (!root.equals(root.getCause())) {
root = root.getCause();
}
return root.getMessage();
}
}