Fetches the calendar home set

src/data/mod.rs

@@ -3,6 +3,7 @@
 //! This gives access to data from both the server and a local database for quick retrieval when the app starts
 
 use std::sync::Arc;
+use std::error::Error;
 
 mod calendar;
 mod task;
@@ -29,13 +30,14 @@ impl DataSource {
     }
 
     /// Tell this data source what the source server is
-    pub fn set_server(&mut self, url: String, username: String, password: String) {
-        self.client = Client::new(url, username, password);
+    pub fn set_server(&mut self, url: String, username: String, password: String) -> Result<(), Box<dyn Error>> {
+        self.client = Some(Client::new(url, username, password)?);
+        Ok(())
     }
 
     /// Update the local database with info from the Client
-    pub fn fetch_from_server(&self) {
-        // TODO: how to handle conflicts?
+    pub fn fetch_from_server(&mut self) {
+
     }
 
     pub fn update_changes_to_server(&self) {
@@ -45,7 +47,6 @@ impl DataSource {
     pub fn calendars(&self) -> Vec<&Calendar> {
         self.calendars
             .iter()
-            .map(|c| &c)
             .collect()
     }
 }