update models and openai api key error logic

.gitignore

@@ -163,3 +163,4 @@ cython_debug/
 
 .gradio/
 .DS_Store
+gradio_cached_examples/

docker-compose.yml

@@ -7,8 +7,11 @@ services:
       OPENAI_API_KEY: ${OPENAI_API_KEY}
       SENTRY_DSN: ${SENTRY_DSN}
       PROMPTIC_DEBUG: ${PROMPTIC_DEBUG}
+      GEMINI_API_KEY: ${GEMINI_API_KEY}
     volumes:
-      - gradio:/app/.gradio
+      - pdf_to_podcast_gradio:/app/.gradio
+      - pdf_to_podcast_gradio_cache:/app/gradio_cached_examples
 
 volumes:
-  gradio:
+  pdf_to_podcast_gradio:
+  pdf_to_podcast_gradio_cache:

main.py

@@ -63,7 +63,7 @@ def get_mp3(text: str, voice: str, api_key: str = None) -> bytes:
 
 def generate_audio(file: str, openai_api_key: str = None) -> bytes:
 
-    if not os.getenv("OPENAI_API_KEY", openai_api_key):
+    if not (os.getenv("OPENAI_API_KEY") or openai_api_key):
         raise gr.Error("OpenAI API key is required")
 
     with Path(file).open("rb") as f:
@@ -72,7 +72,7 @@ def generate_audio(file: str, openai_api_key: str = None) -> bytes:
 
     @retry(retry=retry_if_exception_type(ValidationError))
     @llm(
-        model="gpt-4o-mini",
+        model="gemini/gemini-1.5-flash-002",
     )
     def generate_dialogue(text: str) -> Dialogue:
         """