Have the default AI provider for text to text be Google

Author: kovidgoyal

src/calibre/ai/config.py

@@ -4,7 +4,7 @@
 from qt.core import QComboBox, QDialog, QGroupBox, QHBoxLayout, QLabel, QStackedLayout, QVBoxLayout, QWidget
 
 from calibre.ai import AICapabilities
-from calibre.ai.prefs import plugins_for_purpose, prefs
+from calibre.ai.prefs import plugin_for_purpose, plugins_for_purpose, prefs
 from calibre.gui2 import Application, error_dialog
 
 
@@ -31,7 +31,7 @@ def __init__(self, purpose: AICapabilities = AICapabilities.text_to_text, parent
             h.addWidget(la), h.addWidget(pcb), h.addStretch()
             v.addLayout(h)
             pcb.currentIndexChanged.connect(self.stack.setCurrentIndex)
-            idx = pcb.findText(prefs()['purpose_map'].get(str(self.purpose), ''))
+            idx = pcb.findText(getattr(plugin_for_purpose(self.purpose), 'name', ''))
             pcb.setCurrentIndex(max(0, idx))
         elif len(plugins) == 1:
             self.gb.setTitle(_('Configure AI provider: {}').format(plugins[0].name))

src/calibre/ai/prefs.py

@@ -47,6 +47,12 @@ def plugin_for_purpose(purpose: AICapabilities) -> AIProviderPlugin | None:
     if ans := compatible_plugins.get(q):
         return ans
     if compatible_plugins:
+        from calibre.ai.google import GoogleAI
+        # Prefer Google for text to text as it give us 1500 free web searches per day
+        if purpose == AICapabilities.text_to_text:
+            for name, p in compatible_plugins.items():
+                if name == GoogleAI.name:
+                    return p
         return next(iter(compatible_plugins.values()))
     return None