feat(readarr): add the delete book handler

Handles the delete book prompt opened from the author details view,
toggling whether to delete files on disk and whether to add a list
exclusion before confirming.

Backing out of the prompt resets both toggles, so preferences from an
abandoned delete cannot leak into the next one.

src/handlers/readarr_handlers/library/delete_book_handler.rs

@@ -0,0 +1,147 @@
+use crate::app::App;
+use crate::event::Key;
+use crate::handlers::{KeyEventHandler, handle_prompt_toggle};
+use crate::matches_key;
+use crate::models::Route;
+use crate::models::readarr_models::DeleteParams;
+use crate::models::servarr_data::readarr::readarr_data::{ActiveReadarrBlock, DELETE_BOOK_BLOCKS};
+use crate::network::readarr_network::ReadarrEvent;
+
+#[cfg(test)]
+#[path = "delete_book_handler_tests.rs"]
+mod delete_book_handler_tests;
+
+pub(in crate::handlers::readarr_handlers) struct DeleteBookHandler<'a, 'b> {
+  key: Key,
+  app: &'a mut App<'b>,
+  active_readarr_block: ActiveReadarrBlock,
+  _context: Option<ActiveReadarrBlock>,
+}
+
+impl DeleteBookHandler<'_, '_> {
+  fn build_delete_book_params(&mut self) -> DeleteParams {
+    let id = self.app.data.readarr_data.books.current_selection().id;
+    let delete_files = self.app.data.readarr_data.delete_files;
+    let add_import_list_exclusion = self.app.data.readarr_data.add_import_list_exclusion;
+    self.app.data.readarr_data.reset_delete_preferences();
+
+    DeleteParams {
+      id,
+      delete_files,
+      add_import_list_exclusion,
+    }
+  }
+}
+
+impl<'a, 'b> KeyEventHandler<'a, 'b, ActiveReadarrBlock> for DeleteBookHandler<'a, 'b> {
+  fn accepts(active_block: ActiveReadarrBlock) -> bool {
+    DELETE_BOOK_BLOCKS.contains(&active_block)
+  }
+
+  fn ignore_special_keys(&self) -> bool {
+    self.app.ignore_special_keys_for_textbox_input
+  }
+
+  fn new(
+    key: Key,
+    app: &'a mut App<'b>,
+    active_block: ActiveReadarrBlock,
+    _context: Option<ActiveReadarrBlock>,
+  ) -> DeleteBookHandler<'a, 'b> {
+    DeleteBookHandler {
+      key,
+      app,
+      active_readarr_block: active_block,
+      _context,
+    }
+  }
+
+  fn get_key(&self) -> Key {
+    self.key
+  }
+
+  fn is_ready(&self) -> bool {
+    !self.app.is_loading
+  }
+
+  fn handle_scroll_up(&mut self) {
+    if self.active_readarr_block == ActiveReadarrBlock::DeleteBookPrompt {
+      self.app.data.readarr_data.selected_block.up();
+    }
+  }
+
+  fn handle_scroll_down(&mut self) {
+    if self.active_readarr_block == ActiveReadarrBlock::DeleteBookPrompt {
+      self.app.data.readarr_data.selected_block.down();
+    }
+  }
+
+  fn handle_home(&mut self) {}
+
+  fn handle_end(&mut self) {}
+
+  fn handle_delete(&mut self) {}
+
+  fn handle_left_right_action(&mut self) {
+    if self.active_readarr_block == ActiveReadarrBlock::DeleteBookPrompt {
+      handle_prompt_toggle(self.app, self.key);
+    }
+  }
+
+  fn handle_submit(&mut self) {
+    if self.active_readarr_block == ActiveReadarrBlock::DeleteBookPrompt {
+      match self.app.data.readarr_data.selected_block.get_active_block() {
+        ActiveReadarrBlock::DeleteBookConfirmPrompt => {
+          if self.app.data.readarr_data.prompt_confirm {
+            self.app.data.readarr_data.prompt_confirm_action =
+              Some(ReadarrEvent::DeleteBook(self.build_delete_book_params()));
+            self.app.should_refresh = true;
+          } else {
+            self.app.data.readarr_data.reset_delete_preferences();
+          }
+
+          self.app.pop_navigation_stack();
+        }
+        ActiveReadarrBlock::DeleteBookToggleDeleteFile => {
+          self.app.data.readarr_data.delete_files = !self.app.data.readarr_data.delete_files;
+        }
+        ActiveReadarrBlock::DeleteBookToggleAddListExclusion => {
+          self.app.data.readarr_data.add_import_list_exclusion =
+            !self.app.data.readarr_data.add_import_list_exclusion;
+        }
+        _ => (),
+      }
+    }
+  }
+
+  fn handle_esc(&mut self) {
+    if self.active_readarr_block == ActiveReadarrBlock::DeleteBookPrompt {
+      self.app.pop_navigation_stack();
+      self.app.data.readarr_data.reset_delete_preferences();
+      self.app.data.readarr_data.prompt_confirm = false;
+    }
+  }
+
+  fn handle_char_key_event(&mut self) {
+    if self.active_readarr_block == ActiveReadarrBlock::DeleteBookPrompt
+      && self.app.data.readarr_data.selected_block.get_active_block()
+        == ActiveReadarrBlock::DeleteBookConfirmPrompt
+      && matches_key!(confirm, self.key)
+    {
+      self.app.data.readarr_data.prompt_confirm = true;
+      self.app.data.readarr_data.prompt_confirm_action =
+        Some(ReadarrEvent::DeleteBook(self.build_delete_book_params()));
+      self.app.should_refresh = true;
+
+      self.app.pop_navigation_stack();
+    }
+  }
+
+  fn app_mut(&mut self) -> &mut App<'b> {
+    self.app
+  }
+
+  fn current_route(&self) -> Route {
+    self.app.get_current_route()
+  }
+}

src/handlers/readarr_handlers/library/delete_book_handler_tests.rs

@@ -0,0 +1,470 @@
+#[cfg(test)]
+mod tests {
+  use pretty_assertions::assert_eq;
+  use rstest::rstest;
+  use strum::IntoEnumIterator;
+
+  use crate::app::App;
+  use crate::app::key_binding::DEFAULT_KEYBINDINGS;
+  use crate::event::Key;
+  use crate::handlers::KeyEventHandler;
+  use crate::handlers::readarr_handlers::library::delete_book_handler::DeleteBookHandler;
+  use crate::models::readarr_models::{Book, DeleteParams};
+  use crate::models::servarr_data::readarr::readarr_data::{
+    ActiveReadarrBlock, DELETE_BOOK_BLOCKS,
+  };
+
+  mod test_handle_scroll_up_and_down {
+    use pretty_assertions::assert_eq;
+    use rstest::rstest;
+
+    use crate::models::BlockSelectionState;
+    use crate::models::servarr_data::readarr::readarr_data::DELETE_BOOK_SELECTION_BLOCKS;
+
+    use super::*;
+
+    #[rstest]
+    fn test_delete_book_prompt_scroll(#[values(Key::Up, Key::Down)] key: Key) {
+      let mut app = App::test_default();
+      app.data.readarr_data.selected_block = BlockSelectionState::new(DELETE_BOOK_SELECTION_BLOCKS);
+      app.data.readarr_data.selected_block.down();
+
+      DeleteBookHandler::new(key, &mut app, ActiveReadarrBlock::DeleteBookPrompt, None).handle();
+
+      if key == Key::Up {
+        assert_eq!(
+          app.data.readarr_data.selected_block.get_active_block(),
+          ActiveReadarrBlock::DeleteBookToggleDeleteFile
+        );
+      } else {
+        assert_eq!(
+          app.data.readarr_data.selected_block.get_active_block(),
+          ActiveReadarrBlock::DeleteBookConfirmPrompt
+        );
+      }
+    }
+
+    #[rstest]
+    fn test_delete_book_prompt_scroll_no_op_when_not_ready(#[values(Key::Up, Key::Down)] key: Key) {
+      let mut app = App::test_default();
+      app.is_loading = true;
+      app.data.readarr_data.selected_block = BlockSelectionState::new(DELETE_BOOK_SELECTION_BLOCKS);
+      app.data.readarr_data.selected_block.down();
+
+      DeleteBookHandler::new(key, &mut app, ActiveReadarrBlock::DeleteBookPrompt, None).handle();
+
+      assert_eq!(
+        app.data.readarr_data.selected_block.get_active_block(),
+        ActiveReadarrBlock::DeleteBookToggleAddListExclusion
+      );
+    }
+  }
+
+  mod test_handle_left_right_action {
+    use rstest::rstest;
+
+    use super::*;
+
+    #[rstest]
+    fn test_left_right_prompt_toggle(#[values(Key::Left, Key::Right)] key: Key) {
+      let mut app = App::test_default();
+      app.push_navigation_stack(ActiveReadarrBlock::DeleteBookPrompt.into());
+
+      DeleteBookHandler::new(key, &mut app, ActiveReadarrBlock::DeleteBookPrompt, None).handle();
+
+      assert!(app.data.readarr_data.prompt_confirm);
+
+      DeleteBookHandler::new(key, &mut app, ActiveReadarrBlock::DeleteBookPrompt, None).handle();
+
+      assert!(!app.data.readarr_data.prompt_confirm);
+    }
+  }
+
+  mod test_handle_submit {
+    use pretty_assertions::assert_eq;
+
+    use crate::assert_navigation_popped;
+    use crate::models::BlockSelectionState;
+    use crate::models::servarr_data::readarr::readarr_data::DELETE_BOOK_SELECTION_BLOCKS;
+    use crate::network::readarr_network::ReadarrEvent;
+
+    use super::*;
+
+    const SUBMIT_KEY: Key = DEFAULT_KEYBINDINGS.submit.key;
+
+    #[test]
+    fn test_delete_book_prompt_prompt_decline_submit() {
+      let mut app = App::test_default();
+      app.push_navigation_stack(ActiveReadarrBlock::AuthorDetails.into());
+      app.push_navigation_stack(ActiveReadarrBlock::DeleteBookPrompt.into());
+      app.data.readarr_data.selected_block = BlockSelectionState::new(DELETE_BOOK_SELECTION_BLOCKS);
+      app
+        .data
+        .readarr_data
+        .selected_block
+        .set_index(0, DELETE_BOOK_SELECTION_BLOCKS.len() - 1);
+      app.data.readarr_data.delete_files = true;
+      app.data.readarr_data.add_import_list_exclusion = true;
+
+      DeleteBookHandler::new(
+        SUBMIT_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_navigation_popped!(app, ActiveReadarrBlock::AuthorDetails.into());
+      assert_none!(app.data.readarr_data.prompt_confirm_action);
+      assert!(!app.data.readarr_data.prompt_confirm);
+      assert!(!app.data.readarr_data.delete_files);
+      assert!(!app.data.readarr_data.add_import_list_exclusion);
+    }
+
+    #[test]
+    fn test_delete_book_confirm_prompt_prompt_confirmation_submit() {
+      let mut app = App::test_default();
+      app.push_navigation_stack(ActiveReadarrBlock::AuthorDetails.into());
+      app.push_navigation_stack(ActiveReadarrBlock::DeleteBookPrompt.into());
+      app.data.readarr_data.prompt_confirm = true;
+      app.data.readarr_data.delete_files = false;
+      app.data.readarr_data.add_import_list_exclusion = true;
+      app.data.readarr_data.books.set_items(vec![book()]);
+      let expected_delete_book_params = DeleteParams {
+        id: 42,
+        delete_files: false,
+        add_import_list_exclusion: true,
+      };
+      app.data.readarr_data.selected_block = BlockSelectionState::new(DELETE_BOOK_SELECTION_BLOCKS);
+      app
+        .data
+        .readarr_data
+        .selected_block
+        .set_index(0, DELETE_BOOK_SELECTION_BLOCKS.len() - 1);
+
+      DeleteBookHandler::new(
+        SUBMIT_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_navigation_popped!(app, ActiveReadarrBlock::AuthorDetails.into());
+      assert_eq!(
+        app.data.readarr_data.prompt_confirm_action,
+        Some(ReadarrEvent::DeleteBook(expected_delete_book_params))
+      );
+      assert!(app.should_refresh);
+      assert!(app.data.readarr_data.prompt_confirm);
+      assert!(!app.data.readarr_data.delete_files);
+      assert!(!app.data.readarr_data.add_import_list_exclusion);
+    }
+
+    #[test]
+    fn test_delete_book_confirm_prompt_prompt_confirmation_submit_no_op_when_not_ready() {
+      let mut app = App::test_default();
+      app.is_loading = true;
+      app.push_navigation_stack(ActiveReadarrBlock::AuthorDetails.into());
+      app.push_navigation_stack(ActiveReadarrBlock::DeleteBookPrompt.into());
+      app.data.readarr_data.prompt_confirm = true;
+      app.data.readarr_data.delete_files = true;
+      app.data.readarr_data.add_import_list_exclusion = false;
+
+      DeleteBookHandler::new(
+        SUBMIT_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_eq!(
+        app.get_current_route(),
+        ActiveReadarrBlock::DeleteBookPrompt.into()
+      );
+      assert_none!(app.data.readarr_data.prompt_confirm_action);
+      assert!(!app.should_refresh);
+      assert!(app.data.readarr_data.prompt_confirm);
+      assert!(app.data.readarr_data.delete_files);
+      assert!(!app.data.readarr_data.add_import_list_exclusion);
+    }
+
+    #[test]
+    fn test_delete_book_toggle_delete_files_submit() {
+      let current_route = ActiveReadarrBlock::DeleteBookPrompt.into();
+      let mut app = App::test_default();
+      app.data.readarr_data.selected_block = BlockSelectionState::new(DELETE_BOOK_SELECTION_BLOCKS);
+      app.push_navigation_stack(ActiveReadarrBlock::DeleteBookPrompt.into());
+
+      DeleteBookHandler::new(
+        SUBMIT_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_eq!(app.get_current_route(), current_route);
+      assert!(app.data.readarr_data.delete_files);
+      assert!(!app.data.readarr_data.add_import_list_exclusion);
+
+      DeleteBookHandler::new(
+        SUBMIT_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_eq!(app.get_current_route(), current_route);
+      assert!(!app.data.readarr_data.delete_files);
+      assert!(!app.data.readarr_data.add_import_list_exclusion);
+    }
+
+    #[test]
+    fn test_delete_book_toggle_add_list_exclusion_submit() {
+      let current_route = ActiveReadarrBlock::DeleteBookPrompt.into();
+      let mut app = App::test_default();
+      app.data.readarr_data.selected_block = BlockSelectionState::new(DELETE_BOOK_SELECTION_BLOCKS);
+      app.data.readarr_data.selected_block.down();
+      app.push_navigation_stack(ActiveReadarrBlock::DeleteBookPrompt.into());
+
+      DeleteBookHandler::new(
+        SUBMIT_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_eq!(app.get_current_route(), current_route);
+      assert!(app.data.readarr_data.add_import_list_exclusion);
+      assert!(!app.data.readarr_data.delete_files);
+
+      DeleteBookHandler::new(
+        SUBMIT_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_eq!(app.get_current_route(), current_route);
+      assert!(!app.data.readarr_data.add_import_list_exclusion);
+      assert!(!app.data.readarr_data.delete_files);
+    }
+  }
+
+  mod test_handle_esc {
+    use rstest::rstest;
+
+    use crate::assert_navigation_popped;
+
+    use super::*;
+
+    const ESC_KEY: Key = DEFAULT_KEYBINDINGS.esc.key;
+
+    #[rstest]
+    fn test_delete_book_prompt_esc(#[values(true, false)] is_loading: bool) {
+      let mut app = App::test_default();
+      app.is_loading = is_loading;
+      app.push_navigation_stack(ActiveReadarrBlock::AuthorDetails.into());
+      app.push_navigation_stack(ActiveReadarrBlock::DeleteBookPrompt.into());
+      app.data.readarr_data.prompt_confirm = true;
+      app.data.readarr_data.delete_files = true;
+      app.data.readarr_data.add_import_list_exclusion = true;
+
+      DeleteBookHandler::new(
+        ESC_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_navigation_popped!(app, ActiveReadarrBlock::AuthorDetails.into());
+      assert!(!app.data.readarr_data.prompt_confirm);
+      assert!(!app.data.readarr_data.delete_files);
+      assert!(!app.data.readarr_data.add_import_list_exclusion);
+    }
+  }
+
+  mod test_handle_key_char {
+    use pretty_assertions::assert_eq;
+
+    use crate::assert_navigation_popped;
+    use crate::models::BlockSelectionState;
+    use crate::models::servarr_data::readarr::readarr_data::DELETE_BOOK_SELECTION_BLOCKS;
+    use crate::network::readarr_network::ReadarrEvent;
+
+    use super::*;
+
+    const CONFIRM_KEY: Key = DEFAULT_KEYBINDINGS.confirm.key;
+
+    #[test]
+    fn test_delete_book_confirm_prompt_prompt_confirm() {
+      let mut app = App::test_default();
+      app.push_navigation_stack(ActiveReadarrBlock::AuthorDetails.into());
+      app.push_navigation_stack(ActiveReadarrBlock::DeleteBookPrompt.into());
+      app.data.readarr_data.delete_files = true;
+      app.data.readarr_data.add_import_list_exclusion = false;
+      app.data.readarr_data.books.set_items(vec![book()]);
+      let expected_delete_book_params = DeleteParams {
+        id: 42,
+        delete_files: true,
+        add_import_list_exclusion: false,
+      };
+      app.data.readarr_data.selected_block = BlockSelectionState::new(DELETE_BOOK_SELECTION_BLOCKS);
+      app
+        .data
+        .readarr_data
+        .selected_block
+        .set_index(0, DELETE_BOOK_SELECTION_BLOCKS.len() - 1);
+
+      DeleteBookHandler::new(
+        CONFIRM_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_navigation_popped!(app, ActiveReadarrBlock::AuthorDetails.into());
+      assert_eq!(
+        app.data.readarr_data.prompt_confirm_action,
+        Some(ReadarrEvent::DeleteBook(expected_delete_book_params))
+      );
+      assert!(app.should_refresh);
+      assert!(app.data.readarr_data.prompt_confirm);
+      assert!(!app.data.readarr_data.delete_files);
+      assert!(!app.data.readarr_data.add_import_list_exclusion);
+    }
+
+    #[test]
+    fn test_delete_book_confirm_prompt_prompt_confirm_no_op_when_not_ready() {
+      let mut app = App::test_default();
+      app.is_loading = true;
+      app.push_navigation_stack(ActiveReadarrBlock::AuthorDetails.into());
+      app.push_navigation_stack(ActiveReadarrBlock::DeleteBookPrompt.into());
+      app.data.readarr_data.delete_files = true;
+      app.data.readarr_data.add_import_list_exclusion = false;
+      app.data.readarr_data.books.set_items(vec![book()]);
+      app.data.readarr_data.selected_block = BlockSelectionState::new(DELETE_BOOK_SELECTION_BLOCKS);
+      app
+        .data
+        .readarr_data
+        .selected_block
+        .set_index(0, DELETE_BOOK_SELECTION_BLOCKS.len() - 1);
+
+      DeleteBookHandler::new(
+        CONFIRM_KEY,
+        &mut app,
+        ActiveReadarrBlock::DeleteBookPrompt,
+        None,
+      )
+      .handle();
+
+      assert_eq!(
+        app.get_current_route(),
+        ActiveReadarrBlock::DeleteBookPrompt.into()
+      );
+      assert_none!(app.data.readarr_data.prompt_confirm_action);
+      assert!(!app.should_refresh);
+      assert!(!app.data.readarr_data.prompt_confirm);
+      assert!(app.data.readarr_data.delete_files);
+    }
+  }
+
+  #[test]
+  fn test_delete_book_handler_accepts() {
+    ActiveReadarrBlock::iter().for_each(|active_readarr_block| {
+      if DELETE_BOOK_BLOCKS.contains(&active_readarr_block) {
+        assert!(DeleteBookHandler::accepts(active_readarr_block));
+      } else {
+        assert!(!DeleteBookHandler::accepts(active_readarr_block));
+      }
+    });
+  }
+
+  #[rstest]
+  fn test_delete_book_handler_ignore_special_keys(
+    #[values(true, false)] ignore_special_keys_for_textbox_input: bool,
+  ) {
+    let mut app = App::test_default();
+    app.ignore_special_keys_for_textbox_input = ignore_special_keys_for_textbox_input;
+    let handler = DeleteBookHandler::new(
+      DEFAULT_KEYBINDINGS.esc.key,
+      &mut app,
+      ActiveReadarrBlock::default(),
+      None,
+    );
+
+    assert_eq!(
+      handler.ignore_special_keys(),
+      ignore_special_keys_for_textbox_input
+    );
+  }
+
+  #[test]
+  fn test_build_delete_book_params() {
+    let mut app = App::test_default();
+    app.data.readarr_data.books.set_items(vec![book()]);
+    app.data.readarr_data.delete_files = true;
+    app.data.readarr_data.add_import_list_exclusion = false;
+    let expected_delete_book_params = DeleteParams {
+      id: 42,
+      delete_files: true,
+      add_import_list_exclusion: false,
+    };
+
+    let delete_book_params = DeleteBookHandler::new(
+      DEFAULT_KEYBINDINGS.esc.key,
+      &mut app,
+      ActiveReadarrBlock::DeleteBookPrompt,
+      None,
+    )
+    .build_delete_book_params();
+
+    assert_eq!(delete_book_params, expected_delete_book_params);
+    assert!(!app.data.readarr_data.delete_files);
+    assert!(!app.data.readarr_data.add_import_list_exclusion);
+  }
+
+  #[test]
+  fn test_delete_book_handler_not_ready_when_loading() {
+    let mut app = App::test_default();
+    app.is_loading = true;
+
+    let handler = DeleteBookHandler::new(
+      DEFAULT_KEYBINDINGS.esc.key,
+      &mut app,
+      ActiveReadarrBlock::DeleteBookPrompt,
+      None,
+    );
+
+    assert!(!handler.is_ready());
+  }
+
+  #[test]
+  fn test_delete_book_handler_ready_when_not_loading() {
+    let mut app = App::test_default();
+    app.is_loading = false;
+
+    let handler = DeleteBookHandler::new(
+      DEFAULT_KEYBINDINGS.esc.key,
+      &mut app,
+      ActiveReadarrBlock::DeleteBookPrompt,
+      None,
+    );
+
+    assert!(handler.is_ready());
+  }
+
+  fn book() -> Book {
+    Book {
+      id: 42,
+      ..Book::default()
+    }
+  }
+}

src/handlers/readarr_handlers/library/library_handler_tests.rs

@@ -15,7 +15,8 @@ mod tests {
   use crate::models::readarr_models::{Author, AuthorStatistics, AuthorStatus};
   use crate::models::servarr_data::readarr::readarr_data::{
     ADD_AUTHOR_BLOCKS, AUTHOR_DETAILS_BLOCKS, ActiveReadarrBlock, BOOK_DETAILS_BLOCKS,
-    DELETE_AUTHOR_BLOCKS, EDIT_AUTHOR_BLOCKS, EDITION_DETAILS_BLOCKS, LIBRARY_BLOCKS,
+    DELETE_AUTHOR_BLOCKS, DELETE_BOOK_BLOCKS, EDIT_AUTHOR_BLOCKS, EDITION_DETAILS_BLOCKS,
+    LIBRARY_BLOCKS,
   };
   use crate::test_handler_delegation;
 
@@ -907,6 +908,15 @@ mod tests {
     );
   }
 
+  #[test]
+  fn test_delegates_delete_book_blocks_to_delete_book_handler() {
+    test_handler_delegation!(
+      LibraryHandler,
+      ActiveReadarrBlock::Authors,
+      ActiveReadarrBlock::DeleteBookPrompt
+    );
+  }
+
   #[test]
   fn test_delegates_edit_author_blocks_to_edit_author_handler() {
     test_handler_delegation!(
@@ -925,6 +935,7 @@ mod tests {
     library_handler_blocks.extend(EDITION_DETAILS_BLOCKS);
     library_handler_blocks.extend(ADD_AUTHOR_BLOCKS);
     library_handler_blocks.extend(DELETE_AUTHOR_BLOCKS);
+    library_handler_blocks.extend(DELETE_BOOK_BLOCKS);
     library_handler_blocks.extend(EDIT_AUTHOR_BLOCKS);
 
     ActiveReadarrBlock::iter().for_each(|readarr_block| {

src/handlers/readarr_handlers/library/mod.rs

@@ -23,13 +23,14 @@ mod add_author_handler;
 mod author_details_handler;
 mod book_details_handler;
 mod delete_author_handler;
+mod delete_book_handler;
 mod edit_author_handler;
 mod edition_details_handler;
 
 pub(in crate::handlers::readarr_handlers) use {
   add_author_handler::AddAuthorHandler, author_details_handler::AuthorDetailsHandler,
   book_details_handler::BookDetailsHandler, delete_author_handler::DeleteAuthorHandler,
-  edit_author_handler::EditAuthorHandler,
+  delete_book_handler::DeleteBookHandler, edit_author_handler::EditAuthorHandler,
 };
 
 #[cfg(test)]
@@ -84,6 +85,10 @@ impl<'a, 'b> KeyEventHandler<'a, 'b, ActiveReadarrBlock> for LibraryHandler<'a,
           AuthorDetailsHandler::new(self.key, self.app, self.active_readarr_block, self.context)
             .handle();
         }
+        _ if DeleteBookHandler::accepts(self.active_readarr_block) => {
+          DeleteBookHandler::new(self.key, self.app, self.active_readarr_block, self.context)
+            .handle();
+        }
         _ if BookDetailsHandler::accepts(self.active_readarr_block) => {
           BookDetailsHandler::new(self.key, self.app, self.active_readarr_block, self.context)
             .handle();
@@ -96,6 +101,7 @@ impl<'a, 'b> KeyEventHandler<'a, 'b, ActiveReadarrBlock> for LibraryHandler<'a,
   fn accepts(active_block: ActiveReadarrBlock) -> bool {
     AddAuthorHandler::accepts(active_block)
       || DeleteAuthorHandler::accepts(active_block)
+      || DeleteBookHandler::accepts(active_block)
       || EditAuthorHandler::accepts(active_block)
       || AuthorDetailsHandler::accepts(active_block)
       || BookDetailsHandler::accepts(active_block)