268 lines
11 KiB
Java
268 lines
11 KiB
Java
/*
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* This file is part of Player Analytics (Plan).
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*
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* Plan is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License v3 as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Plan is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Plan. If not, see <https://www.gnu.org/licenses/>.
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*/
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package com.djrapitops.plan.delivery.web;
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import com.djrapitops.plan.delivery.web.resource.WebResource;
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import com.djrapitops.plan.settings.config.PlanConfig;
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import com.djrapitops.plan.settings.config.ResourceSettings;
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import com.djrapitops.plan.settings.locale.Locale;
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import com.djrapitops.plan.settings.locale.lang.PluginLang;
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import com.djrapitops.plan.storage.file.PublicHtmlFiles;
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import com.djrapitops.plan.storage.file.Resource;
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import com.djrapitops.plan.utilities.dev.Untrusted;
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import com.djrapitops.plan.utilities.logging.ErrorContext;
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import com.djrapitops.plan.utilities.logging.ErrorLogger;
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import net.playeranalytics.plugin.server.PluginLogger;
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import org.apache.commons.lang3.StringUtils;
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import org.apache.commons.text.TextStringBuilder;
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import javax.inject.Inject;
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import javax.inject.Singleton;
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import java.io.IOException;
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import java.io.UncheckedIOException;
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import java.nio.file.Files;
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import java.nio.file.OpenOption;
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import java.nio.file.Path;
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import java.nio.file.StandardOpenOption;
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import java.util.*;
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import java.util.function.Supplier;
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/**
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* ResourceService implementation.
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*
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* @author AuroraLS3
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*/
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@Singleton
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public class ResourceSvc implements ResourceService {
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public final Set<Snippet> snippets;
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private final PublicHtmlFiles publicHtmlFiles;
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private final ResourceSettings resourceSettings;
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private final Locale locale;
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private final PluginLogger logger;
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private final ErrorLogger errorLogger;
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@Inject
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public ResourceSvc(
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PublicHtmlFiles publicHtmlFiles,
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PlanConfig config,
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Locale locale,
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PluginLogger logger,
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ErrorLogger errorLogger
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) {
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this.publicHtmlFiles = publicHtmlFiles;
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this.resourceSettings = config.getResourceSettings();
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this.locale = locale;
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this.logger = logger;
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this.errorLogger = errorLogger;
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this.snippets = new HashSet<>();
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}
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public void register() {
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Holder.set(this);
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}
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@Override
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public WebResource getResource(String pluginName, @Untrusted String fileName, Supplier<WebResource> source) {
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checkParams(pluginName, fileName, source);
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return applySnippets(pluginName, fileName, getTheResource(pluginName, fileName, source));
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}
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public void checkParams(String pluginName, @Untrusted String fileName, Supplier<WebResource> source) {
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if (pluginName == null || pluginName.isEmpty()) {
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throw new IllegalArgumentException("'pluginName' can't be '" + pluginName + "'!");
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}
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if (fileName == null || fileName.isEmpty()) {
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throw new IllegalArgumentException("'fileName' can't be '" + fileName + "'!");
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}
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if (source == null) {
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throw new IllegalArgumentException("'source' can't be null!");
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}
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}
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private WebResource applySnippets(String pluginName, @Untrusted String fileName, WebResource resource) {
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Map<Position, StringBuilder> byPosition = calculateSnippets(fileName);
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if (byPosition.isEmpty()) return resource;
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String html = applySnippets(resource, byPosition);
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return WebResource.create(html);
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}
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private String applySnippets(WebResource resource, Map<Position, StringBuilder> byPosition) {
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String html = resource.asString();
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if (html == null) {
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return "Error: Given resource did not support WebResource#asString method properly and returned 'null'";
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}
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StringBuilder toHead = byPosition.get(Position.PRE_CONTENT);
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if (toHead != null) {
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html = StringUtils.replaceOnce(html, "</head>", toHead.append("</head>").toString());
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}
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StringBuilder toBody = byPosition.get(Position.PRE_MAIN_SCRIPT);
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if (toBody != null) {
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if (StringUtils.contains(html, "<script id=\"mainScript\"")) {
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html = StringUtils.replaceOnce(html, "<script id=\"mainScript\"", toBody.append("<script id=\"mainScript\"").toString());
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} else {
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html = StringUtils.replaceOnce(html, "</body>", toBody.append("</body>").toString());
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}
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}
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StringBuilder toBodyEnd = byPosition.get(Position.AFTER_MAIN_SCRIPT);
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if (toBodyEnd != null) {
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html = StringUtils.replaceOnce(html, "</body>", toBodyEnd.append("</body>").toString());
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}
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return html;
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}
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private Map<Position, StringBuilder> calculateSnippets(@Untrusted String fileName) {
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Map<Position, StringBuilder> byPosition = new EnumMap<>(Position.class);
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for (Snippet snippet : snippets) {
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if (snippet.matches(fileName)) {
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byPosition.computeIfAbsent(snippet.position, k -> new StringBuilder()).append(snippet.content);
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}
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}
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return byPosition;
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}
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public WebResource getTheResource(String pluginName, @Untrusted String fileName, Supplier<WebResource> source) {
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try {
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if (resourceSettings.shouldBeCustomized(pluginName, fileName)) {
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return getOrWriteCustomized(fileName, source);
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}
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} catch (IOException e) {
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errorLogger.warn(e, ErrorContext.builder()
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.whatToDo("Report this or provide " + fileName + " in " + resourceSettings.getCustomizationDirectory())
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.related("Fetching resource", "Of: " + pluginName, fileName).build());
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}
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// Return original by default
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return source.get();
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}
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public WebResource getOrWriteCustomized(@Untrusted String fileName, Supplier<WebResource> source) throws IOException {
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Optional<Resource> customizedResource = publicHtmlFiles.findCustomizedResource(fileName);
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if (customizedResource.isPresent()) {
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return readCustomized(customizedResource.get());
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} else {
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return writeCustomized(fileName, source);
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}
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}
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public WebResource readCustomized(Resource customizedResource) throws IOException {
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try {
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return customizedResource.asWebResource();
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} catch (UncheckedIOException readFail) {
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throw readFail.getCause();
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}
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}
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public WebResource writeCustomized(@Untrusted String fileName, Supplier<WebResource> source) throws IOException {
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WebResource original = source.get();
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byte[] bytes = original.asBytes();
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OpenOption[] overwrite = {StandardOpenOption.CREATE, StandardOpenOption.TRUNCATE_EXISTING, StandardOpenOption.WRITE};
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@Untrusted Path to = resourceSettings.getCustomizationDirectory().resolve(fileName);
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if (!to.startsWith(resourceSettings.getCustomizationDirectory())) {
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throw new IllegalArgumentException(
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"Absolute path was given for writing a customized file, " +
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"writing outside customization directory is prevented for security reasons.");
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}
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Path dir = to.getParent();
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if (!Files.isSymbolicLink(dir)) Files.createDirectories(dir);
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Files.write(to, bytes, overwrite);
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return original;
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}
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@Override
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public void addScriptsToResource(String pluginName, String fileName, Position position, String... jsSources) {
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checkParams(pluginName, fileName, position, jsSources);
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String snippet = new TextStringBuilder("<script src=\"")
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.appendWithSeparators(jsSources, "\"></script><script src=\"")
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.append("\"></script>").build();
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snippets.add(new Snippet(pluginName, fileName, position, snippet));
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if (!"Plan".equals(pluginName)) {
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logger.info(locale.getString(PluginLang.API_ADD_RESOURCE_JS, pluginName, fileName, position.cleanName()));
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}
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}
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public void checkParams(String pluginName, String fileName, Position position, String[] jsSources) {
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if (pluginName == null || pluginName.isEmpty()) {
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throw new IllegalArgumentException("'pluginName' can't be '" + pluginName + "'!");
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}
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if (fileName == null || fileName.isEmpty()) {
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throw new IllegalArgumentException("'fileName' can't be '" + fileName + "'!");
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}
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if (!fileName.endsWith(".html")) {
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throw new IllegalArgumentException("'" + fileName + "' is not a .html file! Only html files can be added to.");
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}
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if (position == null) {
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throw new IllegalArgumentException("'position' can't be null!");
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}
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if (jsSources == null || jsSources.length == 0) {
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throw new IllegalArgumentException("Can't add snippets to resource without snippets!");
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}
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}
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@Override
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public void addStylesToResource(String pluginName, String fileName, Position position, String... cssSources) {
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checkParams(pluginName, fileName, position, cssSources);
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String snippet = new TextStringBuilder("<link href=\"")
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.appendWithSeparators(cssSources, "\" rel=\"stylesheet\"></link><link href=\"")
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.append("\" rel=\"stylesheet\">").build();
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snippets.add(new Snippet(pluginName, fileName, position, snippet));
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if (!"Plan".equals(pluginName)) {
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logger.info(locale.getString(PluginLang.API_ADD_RESOURCE_CSS, pluginName, fileName, position.cleanName()));
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}
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}
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private static class Snippet {
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private final String pluginName;
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private final String fileName;
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private final Position position;
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private final String content;
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public Snippet(String pluginName, String fileName, Position position, String content) {
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this.pluginName = pluginName;
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this.fileName = fileName;
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this.position = position;
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this.content = content;
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}
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public boolean matches(String fileName) {
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return fileName.equals(this.fileName);
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}
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@Override
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public boolean equals(Object o) {
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if (this == o) return true;
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if (o == null || getClass() != o.getClass()) return false;
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Snippet snippet = (Snippet) o;
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return Objects.equals(pluginName, snippet.pluginName) &&
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Objects.equals(fileName, snippet.fileName) &&
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position == snippet.position &&
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Objects.equals(content, snippet.content);
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}
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@Override
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public int hashCode() {
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return Objects.hash(pluginName, fileName, position, content);
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}
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}
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}
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