introduce config option to enable manual encryption mode

deltachat-ffi/deltachat.h

@@ -332,6 +332,7 @@ char*           dc_get_blobdir               (const dc_context_t* context);
  *                    To save traffic, however, the avatar is attached only as needed
  *                    and also recoded to a reasonable size.
  * - `e2ee_enabled` = 0=no end-to-end-encryption, 1=prefer end-to-end-encryption (default)
+ * - `manual_encryption_mode` = 0=autocrypt mode (default), 1=choose encryption mode manually per chat
  * - `mdns_enabled` = 0=do not send or request read receipts,
  *                    1=send and request read receipts (default)
  * - `bcc_self`     = 0=do not send a copy of outgoing messages to self (default),

src/config.rs

@@ -61,6 +61,9 @@ pub enum Config {
     #[strum(props(default = "1"))]
     E2eeEnabled,
 
+    #[strum(props(default = "0"))]
+    ManualEncryptionMode,
+
     #[strum(props(default = "1"))]
     MdnsEnabled,
 

src/context.rs

@@ -543,6 +543,7 @@ impl Context {
             .await?
             .unwrap_or_else(|| "unknown".to_string());
         let e2ee_enabled = self.get_config_int(Config::E2eeEnabled).await?;
+        let manual_encryption_mode = self.get_config_int(Config::ManualEncryptionMode).await?;
         let mdns_enabled = self.get_config_int(Config::MdnsEnabled).await?;
         let bcc_self = self.get_config_int(Config::BccSelf).await?;
         let send_sync_msgs = self.get_config_int(Config::SendSyncMsgs).await?;
@@ -650,6 +651,7 @@ impl Context {
         res.insert("configured_mvbox_folder", configured_mvbox_folder);
         res.insert("mdns_enabled", mdns_enabled.to_string());
         res.insert("e2ee_enabled", e2ee_enabled.to_string());
+        res.insert("manual_encryption_mode", manual_encryption_mode.to_string());
         res.insert(
             "key_gen_type",
             self.get_config_int(Config::KeyGenType).await?.to_string(),