Partial implementation of contact removal

Empathy needs you to cycle the connection before it notices.

src/padfoot/connection/contact_list.rs

@@ -2,8 +2,9 @@ use crate::padfoot::VarArg;
 use crate::telepathy;
 
 use dbus::tree::MethodErr;
-use deltachat::constants::DC_GCL_ADD_SELF;
-use deltachat::contact::Contact;
+use dc::constants::DC_GCL_ADD_SELF;
+use dc::contact::Contact;
+use deltachat as dc;
 use std::collections::HashMap;
 use std::convert::TryInto;
 use telepathy::ConnectionInterfaceContacts; // for get_contact_attributes
@@ -63,6 +64,19 @@ impl telepathy::ConnectionInterfaceContactList for Connection {
     }
     fn remove_contacts(&self, contacts: Vec<u32>) -> Result<(), MethodErr> {
         println!("Connection<{}>::remove_contacts({:?})", self.id(), contacts);
+
+        let ctx = self.ctx.read().unwrap();
+
+        for contact_id in contacts {
+            // FIXME: don't ignore errors
+            if let Err(e) = Contact::delete(&ctx, contact_id) {
+                println!("    Deleting contact {} failed: {}", contact_id, e);
+            }
+        }
+
+        // FIXME: signals MUST be emitted before this method returns
+        // FIXME: emitting signals at all would be great
+
         Ok(())
     }
     fn unsubscribe(&self, contacts: Vec<u32>) -> Result<(), MethodErr> {