From 1b95f02f2a76d3a26f073eb235f4f04e187dcb49 Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Tue, 2 Dec 2025 06:10:52 +0530
Subject: [PATCH] Add a item to the similar books menu to ask ai for what to
 read next

---
 src/calibre/gui2/actions/similar_books.py | 26 ++++++++++++++++++-----
 src/calibre/gui2/dialogs/llm_book.py      |  7 ++++++
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/src/calibre/gui2/actions/similar_books.py b/src/calibre/gui2/actions/similar_books.py
index 21345fa260..c881ad550e 100644
--- a/src/calibre/gui2/actions/similar_books.py
+++ b/src/calibre/gui2/actions/similar_books.py
@@ -24,18 +24,34 @@ class SimilarBooksAction(InterfaceAction):
     def genesis(self):
         m = self.qaction.menu()
         for text, icon, target, shortcut in [
-        (_('Books by same author'), 'user_profile.png', 'authors', 'Alt+A'),
-        (_('Books in this series'), 'books_in_series.png', 'series',
-            'Alt+Shift+S'),
-        (_('Books by this publisher'), 'publisher.png', 'publisher', 'Alt+P'),
-        (_('Books with the same tags'), 'tags.png', 'tags', 'Alt+T'),]:
+            (_('Books by same author'), 'user_profile.png', 'authors', 'Alt+A'),
+            (_('Books in this series'), 'books_in_series.png', 'series',
+                'Alt+Shift+S'),
+            (_('Books by this publisher'), 'publisher.png', 'publisher', 'Alt+P'),
+            (_('Books with the same tags'), 'tags.png', 'tags', 'Alt+T'),
+        ]:
             ac = self.create_action(spec=(text, icon, None, shortcut),
                     attr=target)
             ac.setObjectName(target)
             m.addAction(ac)
             connect_lambda(ac.triggered, self, lambda self: self.show_similar_books(self.gui.sender().objectName()))
+        ac = self.create_action(spec=(_('Ask AI for what to read next'), 'ai.png', None, 'Ctrl+Shift+A'), attr='ai')
+        ac.setObjectName('ai')
+        m.addAction(ac)
+        ac.triggered.connect(self.ask_ai)
         self.qaction.setMenu(m)
 
+    def ask_ai(self):
+        idx = self.gui.library_view.currentIndex()
+        if not idx.isValid():
+            return
+        db = idx.model().db
+        mi = db.new_api.get_metadata(db.id(idx.row()))
+        from calibre.gui2.dialogs.llm_book import LLMBookDialog, read_next_action
+        d = LLMBookDialog([mi], parent=self.gui)
+        d.llm.activate_action(read_next_action())
+        d.exec()
+
     def show_similar_books(self, typ, *args):
         idx = self.gui.library_view.currentIndex()
         if not idx.isValid():
diff --git a/src/calibre/gui2/dialogs/llm_book.py b/src/calibre/gui2/dialogs/llm_book.py
index 2cd5af6b1d..ba409c02ae 100644
--- a/src/calibre/gui2/dialogs/llm_book.py
+++ b/src/calibre/gui2/dialogs/llm_book.py
@@ -85,6 +85,13 @@ def default_actions() -> tuple[Action, ...]:
     )
 
 
+def read_next_action() -> Action:
+    for ac in default_actions():
+        if ac.name == 'read_next':
+            return ac
+    raise KeyError('No read next action could be found')
+
+
 def current_actions(include_disabled=False) -> Iterator[Action]:
     p = gprefs.get('llm_book_quick_actions') or {}
     return Action.unserialize(p, default_actions(), include_disabled)