From df58ac0c9854cc33606e7379f1e87a00b0ef8a2d Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Fri, 18 Aug 2017 16:22:05 +0300
Subject: www: render help from markdown

---
 .../www/configuration/WwwAppConfiguration.java     | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'juick-www/src/main/java/com/juick/www/configuration/WwwAppConfiguration.java')

diff --git a/juick-www/src/main/java/com/juick/www/configuration/WwwAppConfiguration.java b/juick-www/src/main/java/com/juick/www/configuration/WwwAppConfiguration.java
index 3198df2d..d79ae636 100644
--- a/juick-www/src/main/java/com/juick/www/configuration/WwwAppConfiguration.java
+++ b/juick-www/src/main/java/com/juick/www/configuration/WwwAppConfiguration.java
@@ -24,6 +24,10 @@ import com.juick.service.UserService;
 import com.juick.www.HelpService;
 import com.juick.www.WebApp;
 import org.apache.commons.io.IOUtils;
+import org.commonmark.ext.autolink.AutolinkExtension;
+import org.commonmark.node.Link;
+import org.commonmark.parser.Parser;
+import org.commonmark.renderer.html.HtmlRenderer;
 import org.springframework.cache.annotation.EnableCaching;
 import org.springframework.cache.caffeine.CaffeineCacheManager;
 import org.springframework.context.annotation.Bean;
@@ -33,6 +37,7 @@ import org.springframework.context.annotation.PropertySource;
 import javax.inject.Inject;
 import java.io.IOException;
 import java.nio.charset.StandardCharsets;
+import java.util.Collections;
 import java.util.HashMap;
 
 /**
@@ -69,4 +74,24 @@ public class WwwAppConfiguration {
         return new HelpService("help");
     }
 
+    @Bean
+    public Parser cmParser() {
+        return Parser.builder().extensions(Collections.singletonList(AutolinkExtension.create())).build();
+    }
+    @Bean
+    public HtmlRenderer helpRenderer() {
+        return HtmlRenderer.builder()
+                .attributeProviderFactory(context -> (node, tagName, attributes) -> {
+                    if (node instanceof Link) {
+                        Link link = (Link) node;
+                        if (link.getDestination().startsWith("/")) {
+                            String destination = "/" + helpService().getHelpPath() + link.getDestination();
+                            link.setDestination(destination);
+                            attributes.put("href", destination);
+                        }
+                    }
+                })
+                .build();
+    }
+
 }
-- 
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