Refactored the UI module and the handlers module to do a more chain-of-responsibility method to manage the UI's and handlers for different key events. Also, initial work for indexer settings as well

src/handlers/radarr_handlers/downloads/mod.rs

@@ -0,0 +1,132 @@
+use crate::app::key_binding::DEFAULT_KEYBINDINGS;
+use crate::app::radarr::{ActiveRadarrBlock, DOWNLOADS_BLOCKS};
+use crate::app::App;
+use crate::event::Key;
+use crate::handlers::radarr_handlers::handle_change_tab_left_right_keys;
+use crate::handlers::{handle_clear_errors, handle_prompt_toggle, KeyEventHandler};
+use crate::models::Scrollable;
+use crate::network::radarr_network::RadarrEvent;
+
+#[cfg(test)]
+#[path = "downloads_handler_tests.rs"]
+mod downloads_handler_tests;
+
+pub(super) struct DownloadsHandler<'a, 'b> {
+  key: &'a Key,
+  app: &'a mut App<'b>,
+  active_radarr_block: &'a ActiveRadarrBlock,
+  _context: &'a Option<ActiveRadarrBlock>,
+}
+
+impl<'a, 'b> KeyEventHandler<'a, 'b, ActiveRadarrBlock> for DownloadsHandler<'a, 'b> {
+  fn accepts(active_block: &'a ActiveRadarrBlock) -> bool {
+    DOWNLOADS_BLOCKS.contains(active_block)
+  }
+
+  fn with(
+    key: &'a Key,
+    app: &'a mut App<'b>,
+    active_block: &'a ActiveRadarrBlock,
+    _context: &'a Option<ActiveRadarrBlock>,
+  ) -> DownloadsHandler<'a, 'b> {
+    DownloadsHandler {
+      key,
+      app,
+      active_radarr_block: active_block,
+      _context,
+    }
+  }
+
+  fn get_key(&self) -> &Key {
+    self.key
+  }
+
+  fn handle_scroll_up(&mut self) {
+    if self.active_radarr_block == &ActiveRadarrBlock::Downloads {
+      self.app.data.radarr_data.downloads.scroll_up()
+    }
+  }
+
+  fn handle_scroll_down(&mut self) {
+    if self.active_radarr_block == &ActiveRadarrBlock::Downloads {
+      self.app.data.radarr_data.downloads.scroll_down()
+    }
+  }
+
+  fn handle_home(&mut self) {
+    if self.active_radarr_block == &ActiveRadarrBlock::Downloads {
+      self.app.data.radarr_data.downloads.scroll_to_top()
+    }
+  }
+
+  fn handle_end(&mut self) {
+    if self.active_radarr_block == &ActiveRadarrBlock::Downloads {
+      self.app.data.radarr_data.downloads.scroll_to_bottom()
+    }
+  }
+
+  fn handle_delete(&mut self) {
+    if self.active_radarr_block == &ActiveRadarrBlock::Downloads {
+      self
+        .app
+        .push_navigation_stack(ActiveRadarrBlock::DeleteDownloadPrompt.into())
+    }
+  }
+
+  fn handle_left_right_action(&mut self) {
+    match self.active_radarr_block {
+      ActiveRadarrBlock::Downloads => handle_change_tab_left_right_keys(self.app, self.key),
+      ActiveRadarrBlock::DeleteDownloadPrompt | ActiveRadarrBlock::UpdateDownloadsPrompt => {
+        handle_prompt_toggle(self.app, self.key)
+      }
+      _ => (),
+    }
+  }
+
+  fn handle_submit(&mut self) {
+    match self.active_radarr_block {
+      ActiveRadarrBlock::DeleteDownloadPrompt => {
+        if self.app.data.radarr_data.prompt_confirm {
+          self.app.data.radarr_data.prompt_confirm_action = Some(RadarrEvent::DeleteDownload);
+        }
+
+        self.app.pop_navigation_stack();
+      }
+      ActiveRadarrBlock::UpdateDownloadsPrompt => {
+        if self.app.data.radarr_data.prompt_confirm {
+          self.app.data.radarr_data.prompt_confirm_action = Some(RadarrEvent::UpdateDownloads);
+        }
+
+        self.app.pop_navigation_stack();
+      }
+      _ => (),
+    }
+  }
+
+  fn handle_esc(&mut self) {
+    match self.active_radarr_block {
+      ActiveRadarrBlock::DeleteDownloadPrompt | ActiveRadarrBlock::UpdateDownloadsPrompt => {
+        self.app.pop_navigation_stack();
+        self.app.data.radarr_data.prompt_confirm = false;
+      }
+      _ => handle_clear_errors(self.app),
+    }
+  }
+
+  fn handle_char_key_event(&mut self) {
+    let key = self.key;
+    if self.active_radarr_block == &ActiveRadarrBlock::Downloads {
+      match self.key {
+        _ if *key == DEFAULT_KEYBINDINGS.update.key => {
+          self
+            .app
+            .push_navigation_stack(ActiveRadarrBlock::UpdateDownloadsPrompt.into());
+        }
+        _ if *key == DEFAULT_KEYBINDINGS.refresh.key => {
+          self.app.should_refresh = true;
+        }
+        _ => (),
+      }
+    }
+  }
+}