Merge pull request #10 from PuyallupFoursquare/maven

Switching from Ivy+Ant to Maven.

1 files changed, 105 insertions, 0 deletions

diff --git a/src/main/java/com/p4square/grow/frontend/FeedData.java b/src/main/java/com/p4square/grow/frontend/FeedData.java
new file mode 100644
index 0000000..feb03a1
--- /dev/null
+++ b/src/main/java/com/p4square/grow/frontend/FeedData.java
@@ -0,0 +1,105 @@
+/*
+ * Copyright 2014 Jesse Morgan
+ */
+
+package com.p4square.grow.frontend;
+
+import java.io.IOException;
+
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.List;
+
+import org.restlet.Context;
+import org.restlet.Restlet;
+
+import com.fasterxml.jackson.databind.JavaType;
+import com.fasterxml.jackson.databind.type.TypeFactory;
+
+import com.p4square.grow.config.Config;
+import com.p4square.grow.frontend.JsonRequestProvider;
+import com.p4square.grow.model.Message;
+import com.p4square.grow.model.MessageThread;
+import com.p4square.grow.provider.JsonEncodedProvider;
+import com.p4square.grow.provider.Provider;
+
+/**
+ * Fetch feed data for a topic.
+ */
+public class FeedData {
+
+    /**
+     * Allowed Topics.
+     */
+    public static final HashSet<String> TOPICS = new HashSet(Arrays.asList("seeker", "believer",
+            "disciple", "teacher", "leader"));
+
+
+    private final Config mConfig;
+    private final String mBackendURI;
+
+    // TODO: Elegantly merge the List and individual providers.
+    private final JsonRequestProvider<List<MessageThread>> mThreadsProvider;
+    private final JsonRequestProvider<MessageThread> mThreadProvider;
+
+    private final JsonRequestProvider<List<Message>> mMessagesProvider;
+    private final JsonRequestProvider<Message> mMessageProvider;
+
+    public FeedData(final Context context, final Config config) {
+        mConfig = config;
+        mBackendURI = mConfig.getString("backendUri", "riap://component/backend") + "/feed";
+
+        Restlet clientDispatcher = context.getClientDispatcher();
+
+        TypeFactory factory = JsonEncodedProvider.MAPPER.getTypeFactory();
+
+        JavaType threadType = factory.constructCollectionType(List.class, MessageThread.class);
+        mThreadsProvider = new JsonRequestProvider<List<MessageThread>>(clientDispatcher, threadType);
+        mThreadProvider = new JsonRequestProvider<MessageThread>(clientDispatcher, MessageThread.class);
+
+        JavaType messageType = factory.constructCollectionType(List.class, Message.class);
+        mMessagesProvider = new JsonRequestProvider<List<Message>>(clientDispatcher, messageType);
+        mMessageProvider = new JsonRequestProvider<Message>(clientDispatcher, Message.class);
+    }
+
+    /**
+     * Get the threads for a topic.
+     *
+     * @param topic The topic to request threads for.
+     * @param limit The maximum number of threads.
+     * @return A list of MessageThread objects.
+     */
+    public List<MessageThread> getThreads(final String topic, final int limit) throws IOException {
+        return mThreadsProvider.get(makeUrl(limit, topic));
+    }
+
+    public List<Message> getMessages(final String topic, final String threadId) throws IOException {
+        return mMessagesProvider.get(makeUrl(topic, threadId));
+    }
+
+    public void createThread(final String topic, final Message message) throws IOException {
+        MessageThread thread = new MessageThread();
+        thread.setMessage(message);
+
+        mThreadProvider.post(makeUrl(topic), thread);
+    }
+
+    public void createResponse(final String topic, final String thread, final Message message)
+        throws IOException {
+
+        mMessageProvider.post(makeUrl(topic, thread), message);
+    }
+
+    private String makeUrl(String... parts) {
+        String url = mBackendURI;
+        for (String part : parts) {
+            url += "/" + part;
+        }
+
+        return url;
+    }
+
+    private String makeUrl(int limit, String... parts) {
+        return makeUrl(parts) + "?limit=" + limit;
+    }
+}