From 1263d0268707b5505c1eb55796c0664f283818eb Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Thu, 4 May 2017 13:15:56 +0300
Subject: juick-www: pebble pretty time filter

---
 .../java/com/juick/util/PrettyTimeFormatter.java   | 36 ++++++++++++++++++++++
 .../pebble/extension/FormatterExtension.java       |  2 ++
 .../pebble/extension/filters/PrettyTimeFilter.java | 33 ++++++++++++++++++++
 juick-www/src/main/webapp/WEB-INF/views/index.html |  2 +-
 4 files changed, 72 insertions(+), 1 deletion(-)
 create mode 100644 juick-core/src/main/java/com/juick/util/PrettyTimeFormatter.java
 create mode 100644 juick-www/src/main/java/com/mitchellbosecke/pebble/extension/filters/PrettyTimeFilter.java

diff --git a/juick-core/src/main/java/com/juick/util/PrettyTimeFormatter.java b/juick-core/src/main/java/com/juick/util/PrettyTimeFormatter.java
new file mode 100644
index 00000000..69be724b
--- /dev/null
+++ b/juick-core/src/main/java/com/juick/util/PrettyTimeFormatter.java
@@ -0,0 +1,36 @@
+package com.juick.util;
+
+import org.ocpsoft.prettytime.PrettyTime;
+
+import java.util.Date;
+import java.util.LinkedHashMap;
+import java.util.Locale;
+import java.util.Map;
+
+/**
+ * Created by vitalyster on 04.05.2017.
+ */
+public class PrettyTimeFormatter {
+    private static final int MAX_CACHE_SIZE = 20;
+
+    // Cache PrettyTime per locale. LRU cache to prevent memory leak.
+    private static final Map<Locale, PrettyTime> PRETTY_TIME_LOCALE_MAP =
+            new LinkedHashMap<Locale, PrettyTime>(MAX_CACHE_SIZE + 1, 1.1F, true)
+    {
+        @Override
+        protected boolean removeEldestEntry(Map.Entry<Locale, PrettyTime> eldest)
+        {
+            return size() > MAX_CACHE_SIZE;
+        }
+    };
+
+    public String format(final Locale locale, final Date value)
+    {
+        PrettyTime prettyTime;
+
+        synchronized (PRETTY_TIME_LOCALE_MAP) {
+            prettyTime = PRETTY_TIME_LOCALE_MAP.computeIfAbsent(locale, PrettyTime::new);
+        }
+        return prettyTime.format(value);
+    }
+}
diff --git a/juick-www/src/main/java/com/mitchellbosecke/pebble/extension/FormatterExtension.java b/juick-www/src/main/java/com/mitchellbosecke/pebble/extension/FormatterExtension.java
index e26b5c20..220e0460 100644
--- a/juick-www/src/main/java/com/mitchellbosecke/pebble/extension/FormatterExtension.java
+++ b/juick-www/src/main/java/com/mitchellbosecke/pebble/extension/FormatterExtension.java
@@ -1,6 +1,7 @@
 package com.mitchellbosecke.pebble.extension;
 
 import com.mitchellbosecke.pebble.extension.filters.FormatMessageFilter;
+import com.mitchellbosecke.pebble.extension.filters.PrettyTimeFilter;
 
 import java.util.HashMap;
 import java.util.Map;
@@ -13,6 +14,7 @@ public class FormatterExtension extends AbstractExtension {
     public Map<String, Filter> getFilters() {
         Map<String, Filter> filters = new HashMap<>();
         filters.put("formatMessage", new FormatMessageFilter());
+        filters.put("prettyTime", new PrettyTimeFilter());
         return filters;
     }
 }
diff --git a/juick-www/src/main/java/com/mitchellbosecke/pebble/extension/filters/PrettyTimeFilter.java b/juick-www/src/main/java/com/mitchellbosecke/pebble/extension/filters/PrettyTimeFilter.java
new file mode 100644
index 00000000..bbe31bb7
--- /dev/null
+++ b/juick-www/src/main/java/com/mitchellbosecke/pebble/extension/filters/PrettyTimeFilter.java
@@ -0,0 +1,33 @@
+package com.mitchellbosecke.pebble.extension.filters;
+
+import com.juick.util.PrettyTimeFormatter;
+import com.mitchellbosecke.pebble.extension.Filter;
+import com.mitchellbosecke.pebble.template.EvaluationContext;
+
+import java.util.Date;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+
+/**
+ * Created by vitalyster on 04.05.2017.
+ */
+public class PrettyTimeFilter implements Filter {
+
+    PrettyTimeFormatter formatter = new PrettyTimeFormatter();
+
+    @Override
+    public Object apply(Object input, Map<String, Object> args) {
+        if (input instanceof Date) {
+            EvaluationContext context = (EvaluationContext) args.get("_context");
+            Locale locale = context.getLocale();
+            return formatter.format(locale, (Date)input);
+        }
+        throw new IllegalArgumentException("invalid input");
+    }
+
+    @Override
+    public List<String> getArgumentNames() {
+        return null;
+    }
+}
diff --git a/juick-www/src/main/webapp/WEB-INF/views/index.html b/juick-www/src/main/webapp/WEB-INF/views/index.html
index a9d6d058..e2a38939 100644
--- a/juick-www/src/main/webapp/WEB-INF/views/index.html
+++ b/juick-www/src/main/webapp/WEB-INF/views/index.html
@@ -16,7 +16,7 @@
         <div class="msg-ts">
             <a href="/{{ msg.getUser().getName() }}/{{ msg.getMid() }}">
                 <time>
-                    {{ msg.getDate() }}
+                    {{ msg.getDate() | prettyTime }}
                 </time>
             </a>
         </div>
-- 
cgit v1.2.3