Allow rules for specific attachment mime types

app/src/main/java/eu/faircode/email/EntityRule.java

@@ -194,8 +194,23 @@ public class EntityRule {
             // Attachments
             if (jcondition.optBoolean("attachments")) {
                 DB db = DB.getInstance(context);
-                if (db.attachment().getAttachments(message.id).size() == 0)
+                List<EntityAttachment> attachments = db.attachment().getAttachments(message.id);
+                if (attachments.size() == 0)
                     return false;
+
+                if (jcondition.has("mimetype")) {
+                    String mimeType = jcondition.getString("mimetype");
+
+                    boolean found = false;
+                    for (EntityAttachment attachment : attachments)
+                        if (mimeType.equalsIgnoreCase(attachment.type)) {
+                            found = true;
+                            break;
+                        }
+
+                    if (!found)
+                        return false;
+                }
             }
 
             // Header

app/src/main/java/eu/faircode/email/FragmentRule.java

@@ -100,6 +100,7 @@ public class FragmentRule extends FragmentBase {
     private CheckBox cbSubject;
 
     private CheckBox cbAttachments;
+    private EditText etMimeType;
 
     private EditText etHeader;
     private CheckBox cbHeader;
@@ -211,6 +212,7 @@ public class FragmentRule extends FragmentBase {
         cbSubject = view.findViewById(R.id.cbSubject);
 
         cbAttachments = view.findViewById(R.id.cbAttachments);
+        etMimeType = view.findViewById(R.id.etMimeType);
 
         etHeader = view.findViewById(R.id.etHeader);
         cbHeader = view.findViewById(R.id.cbHeader);
@@ -291,6 +293,13 @@ public class FragmentRule extends FragmentBase {
             }
         });
 
+        cbAttachments.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
+            @Override
+            public void onCheckedChanged(CompoundButton compoundButton, boolean isChecked) {
+                etMimeType.setEnabled(isChecked);
+            }
+        });
+
         adapterDay = new ArrayAdapter<>(getContext(), R.layout.spinner_item1, android.R.id.text1, new ArrayList<String>());
         adapterDay.setDropDownViewResource(R.layout.spinner_item1_dropdown);
         spScheduleDayStart.setAdapter(adapterDay);
@@ -737,6 +746,8 @@ public class FragmentRule extends FragmentBase {
                         cbSubject.setChecked(jsubject != null && jsubject.getBoolean("regex"));
 
                         cbAttachments.setChecked(jcondition.optBoolean("attachments"));
+                        etMimeType.setText(jcondition.optString("mimetype"));
+                        etMimeType.setEnabled(cbAttachments.isChecked());
 
                         etHeader.setText(jheader == null ? null : jheader.getString("value"));
                         cbHeader.setChecked(jheader != null && jheader.getBoolean("regex"));
@@ -1037,6 +1048,7 @@ public class FragmentRule extends FragmentBase {
         }
 
         jcondition.put("attachments", cbAttachments.isChecked());
+        jcondition.put("mimetype", etMimeType.getText().toString().trim());
 
         String header = etHeader.getText().toString();
         if (!TextUtils.isEmpty(header)) {

app/src/main/res/layout/fragment_rule.xml

@@ -319,6 +319,28 @@
                     app:layout_constraintStart_toStartOf="parent"
                     app:layout_constraintTop_toBottomOf="@+id/vSeparatorAttachments" />
 
+                <eu.faircode.email.FixedTextView
+                    android:id="@+id/tvMimeType"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:layout_marginTop="6dp"
+                    android:text="@string/title_rule_mime_type"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Small"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@+id/cbAttachments" />
+
+                <eu.faircode.email.EditTextPlain
+                    android:id="@+id/etMimeType"
+                    android:layout_width="0dp"
+                    android:layout_height="wrap_content"
+                    android:hint="@string/title_optional"
+                    android:inputType="textCapSentences|textAutoCorrect"
+                    android:textAppearance="@style/TextAppearance.AppCompat.Medium"
+                    app:layout_constraintEnd_toEndOf="parent"
+                    app:layout_constraintStart_toStartOf="parent"
+                    app:layout_constraintTop_toBottomOf="@id/tvMimeType" />
+
                 <eu.faircode.email.FixedTextView
                     android:id="@+id/tvAndAttachments"
                     android:layout_width="wrap_content"
@@ -329,7 +351,7 @@
                     android:textColor="?android:attr/textColorPrimary"
                     app:layout_constraintEnd_toEndOf="parent"
                     app:layout_constraintStart_toStartOf="parent"
-                    app:layout_constraintTop_toBottomOf="@+id/cbAttachments" />
+                    app:layout_constraintTop_toBottomOf="@+id/etMimeType" />
 
                 <View
                     android:id="@+id/vSeparatorHeader"

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

@@ -1051,6 +1051,7 @@
     <string name="title_rule_recipient">Recipient contains</string>
     <string name="title_rule_subject">Subject contains</string>
     <string name="title_rule_attachments">Has attachments</string>
+    <string name="title_rule_mime_type" translatable="false">Mime type</string>
     <string name="title_rule_header">Header contains</string>
     <string name="title_rule_time">Time between</string>
     <string name="title_rule_regex">Regex</string>