Added PGP solution

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

@@ -135,6 +135,9 @@ public interface DaoIdentity {
     @Query("UPDATE identity SET encrypt = :encrypt WHERE id = :id AND NOT (encrypt IS :encrypt)")
     int setIdentityEncrypt(long id, int encrypt);
 
+    @Query("UPDATE identity SET sign_default = 0, encrypt_default = 0 WHERE encrypt = 0")
+    int resetIdentityPGP();
+
     @Query("UPDATE identity SET sign_key = :sign_key WHERE id = :id AND NOT (sign_key IS :sign_key)")
     int setIdentitySignKey(long id, Long sign_key);
 

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

@@ -1975,8 +1975,27 @@ public class FragmentCompose extends FragmentBase {
     private void onMenuEncrypt() {
         EntityIdentity identity = (EntityIdentity) spIdentity.getSelectedItem();
         if (identity == null || identity.encrypt == 0) {
+            if (EntityMessage.ENCRYPT_NONE.equals(encrypt) || encrypt == null)
+                encrypt = EntityMessage.PGP_SIGNENCRYPT;
+            else if (EntityMessage.PGP_SIGNENCRYPT.equals(encrypt))
+                encrypt = EntityMessage.PGP_SIGNONLY;
+            else
+                encrypt = EntityMessage.ENCRYPT_NONE;
+        } else {
+            if (EntityMessage.ENCRYPT_NONE.equals(encrypt) || encrypt == null)
+                encrypt = EntityMessage.SMIME_SIGNENCRYPT;
+            else if (EntityMessage.SMIME_SIGNENCRYPT.equals(encrypt))
+                encrypt = EntityMessage.SMIME_SIGNONLY;
+            else
+                encrypt = EntityMessage.ENCRYPT_NONE;
+        }
+
         final Context context = getContext();
-            if (!Helper.isOpenKeychainInstalled(context)) {
+        if ((EntityMessage.PGP_SIGNONLY.equals(encrypt) ||
+                EntityMessage.PGP_SIGNENCRYPT.equals(encrypt))
+                && !Helper.isOpenKeychainInstalled(context)) {
+            encrypt = EntityMessage.ENCRYPT_NONE;
+
             new AlertDialog.Builder(context)
                     .setIcon(R.drawable.twotone_lock_24)
                     .setTitle(R.string.title_no_openpgp)
@@ -1988,23 +2007,32 @@ public class FragmentCompose extends FragmentBase {
                         }
                     })
                     .setNegativeButton(android.R.string.cancel, null)
-                        .show();
-                return;
+                    .setNeutralButton(R.string.title_reset, new DialogInterface.OnClickListener() {
+                        @Override
+                        public void onClick(DialogInterface dialog, int which) {
+                            new SimpleTask<Void>() {
+                                @Override
+                                protected Void onExecute(Context context, Bundle args) throws Throwable {
+                                    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
+                                    prefs.edit()
+                                            .remove("sign_default")
+                                            .remove("encrypt_default")
+                                            .apply();
+
+                                    DB db = DB.getInstance(context);
+                                    db.identity().resetIdentityPGP();
+
+                                    return null;
                                 }
 
-            if (EntityMessage.ENCRYPT_NONE.equals(encrypt) || encrypt == null)
-                encrypt = EntityMessage.PGP_SIGNENCRYPT;
-            else if (EntityMessage.PGP_SIGNENCRYPT.equals(encrypt))
-                encrypt = EntityMessage.PGP_SIGNONLY;
-            else
-                encrypt = EntityMessage.ENCRYPT_NONE;
-        } else {
-            if (EntityMessage.ENCRYPT_NONE.equals(encrypt) || encrypt == null)
-                encrypt = EntityMessage.SMIME_SIGNENCRYPT;
-            else if (EntityMessage.SMIME_SIGNENCRYPT.equals(encrypt))
-                encrypt = EntityMessage.SMIME_SIGNONLY;
-            else
-                encrypt = EntityMessage.ENCRYPT_NONE;
+                                @Override
+                                protected void onException(Bundle args, Throwable ex) {
+                                    Log.unexpectedError(getParentFragmentManager(), ex);
+                                }
+                            }.execute(FragmentCompose.this, new Bundle(), "encrypt: fix");
+                        }
+                    })
+                    .show();
         }
 
         invalidateOptionsMenu();