improved error handling; search tag when using up-key

src/ui.rs

@@ -41,10 +41,9 @@ impl Ui {
         let mut ui = Ui {
             state: State::SelectService,
             repo: repo_entry::RepoEntry::new(repo_id),
-            tags: tag_list::TagList::with_status("Fetching Tags"),
+            tags: tag_list::TagList::with_status("Select image or edit Repository"),
             services: service_switcher::ServiceSwitcher::new(),
         };
-        ui.tags = tag_list::TagList::with_repo(ui.repo.get());
 
         //setup tui
         let stdout = io::stdout().into_raw_mode().unwrap();
@@ -84,7 +83,10 @@ impl Ui {
                 Ok(Key::Ctrl('q')) => break 'core, //quit program without saving
                 Ok(Key::Char('\t')) => ui.state = ui.state.next(),
                 Ok(Key::Ctrl('s')) => match ui.services.save() {
-                    Err(_) => continue,
+                    Err(e) => {
+                        ui.show_info(&format!("{}", e));
+                        continue;
+                    }
                     Ok(_) => (),
                 },
                 Ok(Key::Char('\n')) => match ui.state {
@@ -95,7 +97,10 @@ impl Ui {
                     State::SelectTag => {
                         let mut repo = ui.repo.get();
                         let tag = match ui.tags.get_selected() {
-                            Err(_) => continue,
+                            Err(e) => {
+                                ui.show_info(&format!("{}", e));
+                                continue;
+                            }
                             Ok(tag) => tag,
                         };
                         repo.push_str(":");
@@ -121,8 +126,18 @@ impl Ui {
                 Ok(Key::Up) => {
                     if ui.state == State::SelectService && ui.services.find_previous_match() {
                         match ui.services.extract_repo() {
-                            Err(_) => ui.show_info("No image found"),
+                            Err(e) => ui.show_info(&format!("{}", e)),
-                            Ok(s) => ui.repo.set(s),
+                            Ok(s) => {
+                                let repo = match crate::tags::Tags::check_repo(s) {
+                                    Err(e) => {
+                                        ui.show_info(&format!("{}", e));
+                                        continue;
+                                    }
+                                    Ok(s) => s,
+                                };
+                                ui.repo.set(repo);
+                                ui.tags = tag_list::TagList::with_repo(ui.repo.get());
+                            }
                         }
                     }
                     ui.tags.handle_input(&ui.state, Key::Up);
@@ -141,6 +156,7 @@ impl Ui {
                                     Ok(s) => s,
                                 };
                                 ui.repo.set(repo);
+                                ui.tags = tag_list::TagList::with_repo(ui.repo.get());
                             }
                         }
                     }

src/widget/service_switcher.rs

@@ -10,7 +10,7 @@ use tui::widgets::{Block, Borders, List, ListState};
 
 use crate::ui::State;
 
-#[derive(Debug, Display)]
+#[derive(Debug)]
 pub enum Error {
     NoneSelected,
     Parsing(String),

src/widget/tag_list.rs

@@ -1,3 +1,5 @@
+use std::fmt;
+
 use termion::event::Key;
 use tui::style::{Color, Style};
 use tui::widgets::{Block, Borders, List, ListState};
@@ -12,9 +14,18 @@ pub struct TagList {
 
 #[derive(Debug)]
 pub enum Error {
+    NoneSelected,
     NoTags,
 }
 
+impl fmt::Display for Error {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        match self {
+            Error::NoTags => write!(f, "There are no tags"),
+            Error::NoneSelected => write!(f, "No tag selected"),
+        }
+    }
+}
 pub enum Type {
     Status(String),
     Repo(tags::Tags),
@@ -34,7 +45,7 @@ impl TagList {
 
     pub fn with_repo(name: String) -> Self {
         match tags::Tags::new(name) {
-            Err(_) => Self::with_status("Couldn't query tags: no images found"),
+            Err(e) => Self::with_status(&format!("{}", e)),
             Ok(tags) => Self::new(Type::Repo(tags)),
         }
     }
@@ -57,7 +68,7 @@ impl TagList {
         match &self.typ {
             Type::Status(_) => Err(Error::NoTags),
             Type::Repo(_) => match self.state.selected() {
-                None => Err(Error::NoTags),
+                None => Err(Error::NoneSelected),
                 Some(i) => Ok(self.get_names().unwrap()[i].clone()),
             },
         }