show what error caused a posting error

Clover/app/src/main/java/org/floens/chan/core/presenter/ReplyPresenter.java

@@ -29,15 +29,16 @@ import org.floens.chan.core.model.orm.Board;
 import org.floens.chan.core.model.orm.Loadable;
 import org.floens.chan.core.model.orm.SavedReply;
 import org.floens.chan.core.settings.ChanSettings;
-import org.floens.chan.core.site.SiteAuthentication;
 import org.floens.chan.core.site.Site;
 import org.floens.chan.core.site.SiteActions;
+import org.floens.chan.core.site.SiteAuthentication;
 import org.floens.chan.core.site.http.HttpCall;
 import org.floens.chan.core.site.http.Reply;
 import org.floens.chan.core.site.http.ReplyResponse;
 import org.floens.chan.ui.captcha.AuthenticationLayoutCallback;
 import org.floens.chan.ui.captcha.AuthenticationLayoutInterface;
 import org.floens.chan.ui.helper.ImagePickDelegate;
+import org.floens.chan.utils.Logger;
 
 import java.io.File;
 import java.nio.charset.Charset;
@@ -46,6 +47,7 @@ import java.util.regex.Pattern;
 
 import javax.inject.Inject;
 
+import static org.floens.chan.utils.AndroidUtils.getAppContext;
 import static org.floens.chan.utils.AndroidUtils.getReadableFileSize;
 import static org.floens.chan.utils.AndroidUtils.getRes;
 import static org.floens.chan.utils.AndroidUtils.getString;
@@ -57,6 +59,7 @@ public class ReplyPresenter implements AuthenticationLayoutCallback, ImagePickDe
         LOADING
     }
 
+    private static final String TAG = "ReplyPresenter";
     private static final Pattern QUOTE_PATTERN = Pattern.compile(">>\\d+");
     private static final Charset UTF_8 = Charset.forName("UTF-8");
 
@@ -243,19 +246,33 @@ public class ReplyPresenter implements AuthenticationLayoutCallback, ImagePickDe
         } else if (replyResponse.requireAuthentication) {
             switchPage(Page.AUTHENTICATION, true);
         } else {
-            if (replyResponse.errorMessage == null) {
+            String errorMessage = getString(R.string.reply_error);
-                replyResponse.errorMessage = getString(R.string.reply_error);
+            if (replyResponse.errorMessage != null) {
+                errorMessage = getAppContext().getString(
+                        R.string.reply_error_message, replyResponse.errorMessage);
             }
 
+            Logger.e(TAG, "onPostComplete error", errorMessage);
             switchPage(Page.INPUT, true);
-            callback.openMessage(true, false, replyResponse.errorMessage, true);
+            callback.openMessage(true, false, errorMessage, true);
         }
     }
 
     @Override
-    public void onPostError(HttpCall httpCall) {
+    public void onPostError(HttpCall httpCall, Exception exception) {
+        Logger.e(TAG, "onPostError", exception);
+
         switchPage(Page.INPUT, true);
-        callback.openMessage(true, false, getString(R.string.reply_error), true);
+
+        String errorMessage = getString(R.string.reply_error);
+        if (exception != null) {
+            String message = exception.getMessage();
+            if (message != null) {
+                errorMessage = getAppContext().getString(R.string.reply_error_message, message);
+            }
+        }
+
+        callback.openMessage(true, false, errorMessage, true);
     }
 
     @Override

Clover/app/src/main/java/org/floens/chan/core/site/SiteActions.java

@@ -40,7 +40,7 @@ public interface SiteActions {
 
         void onPostComplete(HttpCall httpCall, ReplyResponse replyResponse);
 
-        void onPostError(HttpCall httpCall);
+        void onPostError(HttpCall httpCall, Exception exception);
     }
 
     boolean postRequiresAuthentication();

Clover/app/src/main/java/org/floens/chan/core/site/common/CommonSite.java

@@ -476,7 +476,7 @@ public abstract class CommonSite extends SiteBase {
 
                 @Override
                 public void onHttpFail(HttpCall httpCall, Exception e) {
-                    postListener.onPostError(httpCall);
+                    postListener.onPostError(httpCall, e);
                 }
             });
         }

Clover/app/src/main/java/org/floens/chan/core/site/sites/chan4/Chan4.java

@@ -362,7 +362,7 @@ public class Chan4 extends SiteBase {
 
                 @Override
                 public void onHttpFail(CommonReplyHttpCall httpPost, Exception e) {
-                    postListener.onPostError(httpPost);
+                    postListener.onPostError(httpPost, e);
                 }
             });
         }

Clover/app/src/main/res/values/strings.xml

@@ -315,6 +315,7 @@ Re-enable this permission in the app settings if you permanently disabled it."</
     <string name="reply_no_preview">No preview</string>
     <string name="reply_submit">Submit</string>
     <string name="reply_error">Error posting</string>
+    <string name="reply_error_message">Error posting: %s</string>
     <string name="reply_success">Post successful</string>
     <string name="reply_captcha_text">Type the text</string>
     <string name="reply_comment_button_quote">&gt;</string>