allow missing profiles in account switcher

Fixes: https://github.com/damus-io/notedeck/issues/119
Signed-off-by: William Casarin <jb55@jb55.com>

src/ui/profile/preview.rs

@@ -64,8 +64,11 @@ impl<'a, 'cache> ProfilePreview<'a, 'cache> {
 
     fn body(self, ui: &mut egui::Ui) {
         crate::ui::padding(12.0, ui, |ui| {
-            ui.add(ProfilePic::new(self.cache, get_profile_url(self.profile)).size(80.0));
+            ui.add(ProfilePic::new(self.cache, get_profile_url(Some(self.profile))).size(80.0));
-            ui.add(display_name_widget(get_display_name(self.profile), false));
+            ui.add(display_name_widget(
+                get_display_name(Some(self.profile)),
+                false,
+            ));
             ui.add(about_section_widget(self.profile));
         });
     }
@@ -85,12 +88,12 @@ impl<'a, 'cache> egui::Widget for ProfilePreview<'a, 'cache> {
 }
 
 pub struct SimpleProfilePreview<'a, 'cache> {
-    profile: &'a ProfileRecord<'a>,
+    profile: Option<&'a ProfileRecord<'a>>,
     cache: &'cache mut ImageCache,
 }
 
 impl<'a, 'cache> SimpleProfilePreview<'a, 'cache> {
-    pub fn new(profile: &'a ProfileRecord<'a>, cache: &'cache mut ImageCache) -> Self {
+    pub fn new(profile: Option<&'a ProfileRecord<'a>>, cache: &'cache mut ImageCache) -> Self {
         SimpleProfilePreview { profile, cache }
     }
 }
@@ -148,16 +151,16 @@ mod previews {
     }
 }
 
-pub fn get_display_name<'a>(profile: &'a ProfileRecord<'a>) -> DisplayName<'a> {
+pub fn get_display_name<'a>(profile: Option<&'a ProfileRecord<'a>>) -> DisplayName<'a> {
-    if let Some(name) = crate::profile::get_profile_name(profile) {
+    if let Some(name) = profile.and_then(|p| crate::profile::get_profile_name(p)) {
         name
     } else {
         DisplayName::One("??")
     }
 }
 
-pub fn get_profile_url<'a>(profile: &'a ProfileRecord<'a>) -> &'a str {
+pub fn get_profile_url<'a>(profile: Option<&'a ProfileRecord<'a>>) -> &'a str {
-    if let Some(url) = profile.record().profile().and_then(|p| p.picture()) {
+    if let Some(url) = profile.and_then(|pr| pr.record().profile().and_then(|p| p.picture())) {
         url
     } else {
         ProfilePic::no_pfp_url()

src/ui/profile/profile_preview_controller.rs

@@ -40,14 +40,12 @@ pub fn set_profile_previews(
             continue;
         };
 
-        let profile =
+        let profile = app
-            if let Ok(profile) = app.ndb.get_profile_by_pubkey(&txn, account.pubkey.bytes()) {
+            .ndb
-                profile
+            .get_profile_by_pubkey(&txn, account.pubkey.bytes())
-            } else {
+            .ok();
-                continue;
-            };
 
-        let preview = SimpleProfilePreview::new(&profile, &mut app.img_cache);
+        let preview = SimpleProfilePreview::new(profile.as_ref(), &mut app.img_cache);
 
         let is_selected = if let Some(selected) = app.account_manager.get_selected_account_index() {
             i == selected
@@ -101,14 +99,12 @@ pub fn view_profile_previews(
             continue;
         };
 
-        let profile =
+        let profile = app
-            if let Ok(profile) = app.ndb.get_profile_by_pubkey(&txn, account.pubkey.bytes()) {
+            .ndb
-                profile
+            .get_profile_by_pubkey(&txn, account.pubkey.bytes())
-            } else {
+            .ok();
-                continue;
-            };
 
-        let preview = SimpleProfilePreview::new(&profile, &mut app.img_cache);
+        let preview = SimpleProfilePreview::new(profile.as_ref(), &mut app.img_cache);
 
         let is_selected = if let Some(selected) = app.account_manager.get_selected_account_index() {
             i == selected
@@ -132,7 +128,7 @@ pub fn show_with_nickname(
 ) -> Result<egui::Response> {
     let txn = Transaction::new(ndb)?;
     let profile = ndb.get_profile_by_pubkey(&txn, key)?;
-    Ok(ui_element(ui, &get_display_name(&profile)))
+    Ok(ui_element(ui, &get_display_name(Some(&profile))))
 }
 
 pub fn show_with_selected_pfp(
@@ -147,14 +143,12 @@ pub fn show_with_selected_pfp(
                 .ndb
                 .get_profile_by_pubkey(&txn, selected_account.pubkey.bytes());
 
-            if let Ok(profile) = profile {
             return Some(ui_element(
                 ui,
-                    ProfilePic::new(&mut app.img_cache, get_profile_url(&profile)),
+                ProfilePic::new(&mut app.img_cache, get_profile_url(profile.ok().as_ref())),
             ));
         }
     }
-    }
 
     None
 }
@@ -168,12 +162,10 @@ pub fn show_with_pfp(
     if let Ok(txn) = Transaction::new(&app.ndb) {
         let profile = app.ndb.get_profile_by_pubkey(&txn, key);
 
-        if let Ok(profile) = profile {
         return Some(ui_element(
             ui,
-                ProfilePic::new(&mut app.img_cache, get_profile_url(&profile)),
+            ProfilePic::new(&mut app.img_cache, get_profile_url(profile.ok().as_ref())),
         ));
     }
-    }
     None
 }