[enh] Add share URL, with open graph tag - fix issue #35

.gitmodules

-[submodule "duniter4j-cesium/src/main/cesium"]
-	path = duniter4j-cesium/src/main/cesium
-	url = git://github.com/duniter/cesium.git
 [submodule "duniter4j-elasticsearch/src/main/resources/cities"]
 	path = duniter4j-elasticsearch/src/main/resources/cities
 	url = git://github.com/David-Haim/CountriesToCitiesJSON.git

duniter4j-es-assembly/src/main/assembly/config/elasticsearch.yml

@@ -249,4 +249,19 @@ duniter.subscription.enable: false
 #
 # Email subscription: URL to a Cesium site, for links in the email content (default: https://g1.duniter.fr)
 #
-# duniter.subscription.email.cesium.url: 'http://domain.com/cesium'
\ No newline at end of file
+# duniter.subscription.email.cesium.url: 'http://domain.com/cesium'
+#
+# ---------------------------------- Duniter4j User (profile, message) module -------------------
+#
+#
+# Share link: `og:site_name` (default: 'Cesium')
+#
+# duniter.user.share.site.name: 'Cesium - Ğ1'
+#
+# Share link: `og:url` - URL to a Cesium site, for links in the email content (default: https://g1.duniter.fr)
+#
+# duniter.share.cesium.url: 'https://domain.com/cesium'
+#
+# Share link: Base URL of the ES cluster, to resolve `og:image` URL (default: none => /!\ Will use relative image path)
+#
+# duniter.share.base.url: 'https://data.domain.com'
\ No newline at end of file

duniter4j-es-assembly/src/test/es-home/config/elasticsearch.yml

@@ -251,4 +251,19 @@ duniter.subscription.enable: true
 #
 # Email subscription: URL to a Cesium site, for links in the email content (default: https://g1.duniter.fr)
 #
-#duniter.subscription.email.cesium.url: 'https://domain.com/cesium'
\ No newline at end of file
+#duniter.subscription.email.cesium.url: 'https://domain.com/cesium'
+#
+# ---------------------------------- Duniter4j User (profile, message) module -------------------
+#
+#
+# Share link: og:site_name (default: 'Cesium')
+#
+# duniter.user.share.site.name: 'Cesium - Ğ1'
+#
+# Share link : URL to a Cesium site, for links in the email content (default: https://g1.duniter.fr)
+#
+#duniter.share.cesium.url: 'https://domain.com/cesium'
+#
+# Share link : Base URL of cluster, to resolve image (default: none => /!\ Will use relative image path)
+#
+#duniter.share.base.url: 'http://localhost:9200'
\ No newline at end of file

duniter4j-es-core/pom.xml

@@ -76,6 +76,14 @@
       <artifactId>jackson-databind</artifactId>
     </dependency>
 
+
+    <dependency>
+      <groupId>org.antlr</groupId>
+      <artifactId>stringtemplate</artifactId>
+      <version>${stringtemplate.version}</version>
+      <scope>compile</scope>
+    </dependency>
+
     <!-- JNA (need for OS shutdown hook) -->
     <dependency>
       <groupId>net.java.dev.jna</groupId>

duniter4j-es-core/src/main/java/org/duniter/elasticsearch/rest/attachment/RestImageAttachmentAction.java

@@ -95,4 +95,17 @@ public class RestImageAttachmentAction extends BaseRestHandler {
             }
         });
     }
+
+
+    public static String computeImageUrl(String index,
+                                         String type,
+                                         String id,
+                                         String imageField,
+                                         String contentType) {
+
+        int lastSlashIndex = contentType  != null ? contentType.lastIndexOf('/') : -1;
+        String extension = (lastSlashIndex >= 0) ? contentType.substring(lastSlashIndex+1) : contentType;
+
+        return String.format("/%s/%s/%s/_image/%s.%s", index, type, id, imageField, extension);
+    }
 }
\ No newline at end of file

duniter4j-es-core/src/main/java/org/duniter/elasticsearch/rest/share/AbstractRestShareLinkAction.java

+package org.duniter.elasticsearch.rest.share;
+
+import org.apache.http.entity.ContentType;
+import org.duniter.core.exception.BusinessException;
+import org.duniter.core.util.Preconditions;
+import org.duniter.core.util.StringUtils;
+import org.duniter.elasticsearch.exception.DuniterElasticsearchException;
+import org.duniter.elasticsearch.rest.XContentThrowableRestResponse;
+import org.duniter.elasticsearch.util.opengraph.OGData;
+import org.duniter.elasticsearch.util.springtemplate.STUtils;
+import org.elasticsearch.client.Client;
+import org.elasticsearch.common.logging.ESLogger;
+import org.elasticsearch.common.logging.Loggers;
+import org.elasticsearch.common.settings.Settings;
+import org.elasticsearch.rest.*;
+import org.nuiton.i18n.I18n;
+import org.stringtemplate.v4.*;
+
+import java.util.Locale;
+
+import static org.elasticsearch.rest.RestRequest.Method.GET;
+import static org.elasticsearch.rest.RestStatus.OK;
+
+public abstract class AbstractRestShareLinkAction extends BaseRestHandler {
+
+    protected final ESLogger log;
+
+    public interface OGDataResolver {
+        OGData resolve(String id) throws DuniterElasticsearchException, BusinessException;
+    }
+
+    private OGDataResolver resolver;
+    private STGroup templates;
+
+    public AbstractRestShareLinkAction(Settings settings, RestController controller, Client client,
+                                       String indexName,
+                                       String typeName,
+                                       OGDataResolver resolver
+                                        ) {
+        super(settings, controller, client);
+        log = Loggers.getLogger("duniter.rest." + indexName, settings, String.format("[%s]", indexName));
+        controller.registerHandler(GET,
+                String.format("/%s/%s/{id}/_share", indexName, typeName),
+                this);
+        this.resolver = resolver;
+
+        // Configure springtemplate engine
+        this.templates = STUtils.newSTGroup("org/duniter/elasticsearch/templates");
+        Preconditions.checkNotNull(this.templates.getInstanceOf("html_share"), "Unable to load ST template for share page");
+
+    }
+
+    @Override
+    protected void handleRequest(final RestRequest request, RestChannel restChannel, Client client) throws Exception {
+        String id = request.param("id");
+
+        try {
+
+            OGData data = resolver.resolve(id);
+            Preconditions.checkNotNull(data);
+            Preconditions.checkNotNull(data.title);
+
+            // Compute HTML content
+            ST template = templates.getInstanceOf("html_share");
+            template.add("type", data.type);
+            template.add("title", data.title);
+            template.add("summary", StringUtils.truncate(data.description, 500));
+            template.add("description", data.description);
+            template.add("siteName", data.siteName);
+            template.add("image", data.image);
+            template.add("url", data.url);
+            template.add("locale", data.locale);
+            if (StringUtils.isNotBlank(data.url)) {
+                Locale locale = data.locale != null ? new Locale(data.locale) : I18n.getDefaultLocale();
+                template.add("redirectMessage", I18n.l(locale, "duniter4j.share.redirection.help"));
+            }
+
+            String html = template.render();
+
+            restChannel.sendResponse(new BytesRestResponse(OK, ContentType.TEXT_HTML.getMimeType(), html));
+        }
+        catch(DuniterElasticsearchException | BusinessException e) {
+            log.error(e.getMessage(), e);
+            restChannel.sendResponse(new XContentThrowableRestResponse(request, e));
+        }
+        catch(Exception e) {
+            log.error(e.getMessage(), e);
+        }
+    }
+
+}

duniter4j-es-core/src/main/java/org/duniter/elasticsearch/util/opengraph/OGData.java

+package org.duniter.elasticsearch.util.opengraph;
+
+public class OGData {
+    public String type;
+    public String title;
+    public String description;
+    public String image;
+    public String url;
+    public String locale;
+    public String imageType;
+    public String siteName;
+
+}

duniter4j-es-core/src/main/java/org/duniter/elasticsearch/util/springtemplate/DateRenderer.java

+package org.duniter.elasticsearch.util.springtemplate;
+
+/*-
+ * #%L
+ * Duniter4j :: ElasticSearch Subscription plugin
+ * %%
+ * Copyright (C) 2014 - 2017 EIS
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+
+import org.stringtemplate.v4.AttributeRenderer;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.Locale;
+
+public class DateRenderer implements AttributeRenderer {
+
+    public DateRenderer() {
+    }
+
+    public String toString(Object o, String formatString, Locale locale) {
+        if(formatString == null) {
+            formatString = "short";
+        }
+
+        Date d;
+        if(o instanceof Calendar) {
+            d = ((Calendar)o).getTime();
+        } else {
+            d = (Date)o;
+        }
+
+        Integer styleI = (Integer)org.stringtemplate.v4.DateRenderer.formatToInt.get(formatString);
+        Object f;
+        if(styleI == null) {
+            f = new SimpleDateFormat(formatString, locale);
+        } else {
+            int style = styleI.intValue();
+            if(formatString.startsWith("date:")) {
+                f = DateFormat.getDateInstance(style, locale);
+            } else if(formatString.startsWith("time:")) {
+                f = DateFormat.getTimeInstance(style, locale);
+            } else {
+                f = DateFormat.getDateTimeInstance(style, style, locale);
+            }
+        }
+
+        return ((DateFormat)f).format(d);
+    }
+}
\ No newline at end of file

duniter4j-es-core/src/main/java/org/duniter/elasticsearch/util/springtemplate/STUtils.java

+package org.duniter.elasticsearch.util.springtemplate;
+
+import org.stringtemplate.v4.DateRenderer;
+import org.stringtemplate.v4.STGroup;
+import org.stringtemplate.v4.STGroupDir;
+import org.stringtemplate.v4.StringRenderer;
+
+import java.util.Date;
+
+public class STUtils {
+
+    private STUtils() {
+        /*help class*/
+    }
+
+    public static STGroup newSTGroup(String dirName) {
+        // Configure springtemplate engine
+        STGroup templates = new STGroupDir(dirName, '$', '$');
+        templates.registerRenderer(Date.class, new DateRenderer());
+        templates.registerRenderer(String.class, new StringRenderer());
+        return templates;
+    }
+
+
+}

duniter4j-es-core/src/main/java/org/duniter/elasticsearch/util/springtemplate/StringRenderer.java

+package org.duniter.elasticsearch.util.springtemplate;
+
+/*-
+ * #%L
+ * Duniter4j :: ElasticSearch Subscription plugin
+ * %%
+ * Copyright (C) 2014 - 2017 EIS
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+
+import org.duniter.core.client.model.ModelUtils;
+import org.duniter.core.util.CollectionUtils;
+import org.nuiton.i18n.I18n;
+
+import java.util.Locale;
+
+/**
+ * Add format capabilities: i18n, pubkey
+ * Created by blavenie on 10/04/17.
+ */
+public class StringRenderer extends org.stringtemplate.v4.StringRenderer{
+
+    @Override
+    public String toString(Object o, String formatString, Locale locale) {
+        return formatString == null ? (String)o :
+                (formatString.equals("pubkey") ? ModelUtils.minifyPubkey((String)o) :
+                        (formatString.startsWith("i18n") ? toI18nString(o, formatString, locale) :
+                            super.toString(o, formatString, locale)));
+    }
+
+    protected String toI18nString(Object key, String formatString, Locale locale) {
+        String[] params = formatString.startsWith("i18n:") ? formatString.substring(5).split(",") : null;
+        if (CollectionUtils.isNotEmpty(params)) {
+            return I18n.l(locale, key.toString(), params);
+        }
+        return I18n.l(locale, key.toString());
+    }
+}

duniter4j-es-core/src/main/resources/i18n/duniter4j-es-core_en_GB.properties

@@ -47,6 +47,7 @@ duniter4j.job.stopped=
 duniter4j.job.stopping=
 duniter4j.job.success=
 duniter4j.service.waitThenRetry=Error [%s]... will retry [%s/%s]
+duniter4j.share.redirection.help=If you are not redirected automatically, follow this link\:
 duniter4j.task.issuer.system=System
 duniter4j.task.starting=Starting task...
 duniter4j.threadPool.clusterHealthStatus.changed=Cluster health status changed to [%s]

duniter4j-es-core/src/main/resources/i18n/duniter4j-es-core_fr_FR.properties

@@ -49,6 +49,7 @@ duniter4j.job.stopped=
 duniter4j.job.stopping=
 duniter4j.job.success=
 duniter4j.service.waitThenRetry=Echec [%s]... tentative [%s/%s]
+duniter4j.share.redirection.help=Si vous n'êtes pas redirigé automatiquement, cliquez sur le lien suivant \:
 duniter4j.task.issuer.system=Système
 duniter4j.task.starting=Démarrage du traitement...
 duniter4j.threadPool.clusterHealthStatus.changed=Cluster health status changed to [%s]

duniter4j-es-core/src/main/resources/org/duniter/elasticsearch/templates/html_share.st

+html_share(type, title, summary, description, image, siteName, locale, url, redirectMessage) ::= <<
+<html prefix="og: http://ogp.me/ns#">
+    <head>
+        <meta charset="UTF-8">
+
+    $if(siteName)$
+        <title>$siteName$ | $title$</title>
+    $else$
+        <title>$title$</title>
+    $endif$
+
+    $if(type)$
+        <meta property="og:type" content="$type$" />
+    $else$
+        <meta property="og:type" content="website" />
+    $endif$
+
+        <meta property="og:title" content="$title$" />
+
+    $if(summary)$
+        <meta property="og:description" content="$summary$" />
+    $else$
+        <meta property="og:description" content="$description$" />
+    $endif$
+
+    $if(siteName)$
+        <meta property="og:site_name" content="$siteName$" />
+    $endif$
+
+    $if(image)$
+        <meta property="og:image" content="$image$" />
+    $endif$
+
+    $if(locale)$
+        <meta property="og:locale" content="$locale$" />
+    $endif$
+
+    $if(url)$
+        <meta property="og:url" content="$url$" />
+        <script type="text/javascript">
+            window.location.href = "$url$"
+        </script>
+        <META HTTP-EQUIV="Refresh" CONTENT="0; URL=$url$">
+    $endif$
+    </head>
+    <body>
+        $if(image)$
+        <p>
+            <img src="$image$"/>
+        </p>
+        $endif$
+
+        <h1>$title$</h1>
+
+        <p>$description$</p>
+
+        $if(url)$
+        <p>
+            $redirectMessage$ <a href='$url$'>$title$</a>.
+        </p>
+        $endif$
+    </body>
+</html>
+>>

duniter4j-es-subscription/pom.xml

@@ -46,7 +46,7 @@
       <groupId>org.antlr</groupId>
       <artifactId>stringtemplate</artifactId>
       <version>${stringtemplate.version}</version>
-      <scope>compile</scope>
+      <scope>provided</scope>
     </dependency>
 
     <!-- Unit test -->

duniter4j-es-subscription/src/main/java/org/duniter/elasticsearch/subscription/service/SubscriptionService.java

@@ -51,6 +51,7 @@ import org.duniter.elasticsearch.user.service.AdminService;
 import org.duniter.elasticsearch.user.service.MailService;
 import org.duniter.elasticsearch.user.service.UserEventService;
 import org.duniter.elasticsearch.user.service.UserService;
+import org.duniter.elasticsearch.util.springtemplate.STUtils;
 import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.unit.TimeValue;
 import org.nuiton.i18n.I18n;
@@ -76,6 +77,7 @@ public class SubscriptionService extends AbstractService {
     private UserEventService userEventService;
     private UserService userService;
     private String emailSubjectPrefix;
+    private STGroup templates;
 
     @Inject
     public SubscriptionService(Duniter4jClient client,
@@ -100,6 +102,11 @@ public class SubscriptionService extends AbstractService {
         if (StringUtils.isNotBlank(emailSubjectPrefix)) {
             emailSubjectPrefix += " "; // add one trailing space
         }
+
+        // Configure springtemplate engine
+        templates = STUtils.newSTGroup("org/duniter/elasticsearch/subscription/templates");
+        Preconditions.checkNotNull(templates.getInstanceOf("text_email"), "Missing ST template {text_email}");
+        Preconditions.checkNotNull(templates.getInstanceOf("html_email_content"), "Missing ST template {html_email_content}");
     }
 
     public String create(String json) {
@@ -308,11 +315,7 @@ public class SubscriptionService extends AbstractService {
                 subscription.getContent().getLocale().split("-") : new String[]{"en", "GB"};
         Locale issuerLocale = localParts.length >= 2 ? new Locale(localParts[0].toLowerCase(), localParts[1].toUpperCase()) : new Locale(localParts[0].toLowerCase());
 
-        // Configure templates engine
-        STGroup templates = new STGroupDir("templates", '$', '$');
-        templates.registerRenderer(Date.class, new DateRenderer());
-        templates.registerRenderer(String.class, new StringRenderer());
-        //templates.registerRenderer(Number.class, new NumberRenderer());
+
 
         // Compute text content
         final String text = fillTemplate(

duniter4j-es-subscription/src/main/resources/plugin-security.policy

-grant codeBase "file:${es.path.home}/plugins/duniter4j-es-gchange/"{
+grant codeBase "file:${es.path.home}/plugins/duniter4j-es-subscription/"{
   permission java.io.FilePermission "/etc/ld.so.conf", "read";
   permission java.io.FilePermission "/etc/ld.so.conf.d/*.conf", "read";
   permission java.io.FilePermission "/usr/local/lib/*", "read";

duniter4j-es-user/src/main/java/org/duniter/elasticsearch/user/PluginSettings.java

@@ -212,8 +212,17 @@ public class PluginSettings extends AbstractLifecycleComponent<PluginSettings> {
         return this.nodePubkey;
     }
 
+    public String getCesiumUrl() {
+        return this.settings.get("duniter.share.cesium.url", "https://g1.duniter.fr");
+    }
 
+    public String getShareSiteName() {
+        return this.settings.get("duniter.user.share.site.name", "Cesium");
+    }
 
+    public String getBaseUrl() {
+        return settings.get("duniter.share.base.url");
+    }
 
     /* -- protected methods -- */
 

duniter4j-es-user/src/main/java/org/duniter/elasticsearch/user/model/Attachment.java

+package org.duniter.elasticsearch.user.model;
+
+/*
+ * #%L
+ * Duniter4j :: Core Client API
+ * %%
+ * Copyright (C) 2014 - 2016 EIS
+ * %%
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation, either version 3 of the 
+ * License, or (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public 
+ * License along with this program.  If not, see
+ * <http://www.gnu.org/licenses/gpl-3.0.html>.
+ * #L%
+ */
+
+import com.fasterxml.jackson.annotation.JsonGetter;
+import com.fasterxml.jackson.annotation.JsonSetter;
+import org.duniter.core.client.model.elasticsearch.Record;
+
+/**
+ * Created by blavenie on 01/03/16.
+ */
+public class Attachment extends Record {
+
+    public static final String JSON_PROPERTY_CONTENT_TYPE = "_content_type";
+