Added Blackboard Announcements

app/src/main/java/de/sebse/fuplanner/services/kvv/ModulesAnnouncements.java

@@ -10,6 +10,7 @@ import java.util.ArrayList;
 
 import de.sebse.fuplanner.services.kvv.types.Announcement;
 import de.sebse.fuplanner.services.kvv.types.Modules;
+import de.sebse.fuplanner.tools.UtilsDate;
 import de.sebse.fuplanner.tools.network.NetworkCallback;
 import de.sebse.fuplanner.tools.network.NetworkError;
 import de.sebse.fuplanner.tools.network.NetworkErrorCallback;
@@ -91,6 +92,59 @@ public class ModulesAnnouncements extends PartModules<ArrayList<Announcement>> {
 
     @Override
     protected void upgradeBB(String ID, NetworkCallback<ArrayList<Announcement>> callback, NetworkErrorCallback errorCallback) {
-        callback.onResponse(new ArrayList<>());
+        if (!mLogin.isInOnlineMode() || mLogin.getLoginTokenBB() == null) {
+            errorCallback.onError(new NetworkError(101214, 500, "Currently running in offline mode!"));
+            return;
+        }
+        super.get(String.format("https://lms.fu-berlin.de/learn/api/v1/courses/%s/announcements", ID), mLogin.getLoginTokenBB().getCookies(), response -> {
+            String body = response.getParsed();
+            if (body == null) {
+                errorCallback.onError(new NetworkError(101211, 403, "No announcements retrieved!"));
+                return;
+            }
+            ArrayList<Announcement> announcements = new ArrayList<>();
+            JSONArray sites;
+            try {
+                JSONObject json = new JSONObject(body);
+                sites = json.getJSONArray("results");
+            } catch (JSONException e) {
+                e.printStackTrace();
+                errorCallback.onError(new NetworkError(101212, 403, "Cannot parse announcements!"));
+                return;
+            }
+
+            for (int i = 0; i < sites.length(); i++) {
+                try {
+                    JSONObject site = sites.getJSONObject(i);
+                    String id = site.getString("id");
+                    String title = site.getString("title");
+                    String text = site.getJSONObject("body").getString("rawText");
+                    text = String.valueOf(fromHtml(text));
+                    String createdBy = "";//site.getString("createdByDisplayName");
+                    long createdOn = UtilsDate.stringToMillis(site.getString("startDateRestriction"), "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
+                    //long createdOn = 0;//site.getLong("createdOn");
+
+                    // Extract attachment links
+                    //JSONArray attachments = site.getJSONArray("attachments");
+                    ArrayList<String> urls = new ArrayList<>();
+                    /*for (int j = 0; j < attachments.length(); j++) {
+                        urls.add(attachments.getJSONObject(j).optString("url", null));
+                    }*/
+
+                    announcements.add(new Announcement(id, title, text, createdBy, createdOn, urls));
+                } catch (JSONException e) {
+                    log.e(new NetworkError(101215, 403, "Cannot parse announcements!"));
+                    log.e("ID:", i, "JSON:", sites);
+                    e.printStackTrace();
+                    return;
+                }
+            }
+
+            // Empty announcements *may be* because token is invalid -> check
+            if (announcements.size() == 0)
+                mLogin.testLoginToken(token -> callback.onResponse(announcements), errorCallback);
+            else
+                callback.onResponse(announcements);
+        }, error -> errorCallback.onError(new NetworkError(101213, error.networkResponse.statusCode, "Cannot get announcements!")));
     }
 }