Update app.py

app.py

@@ -1,5 +1,5 @@
+## 1. `app.py`
 
-# app.py: Workshop-in-a-Box Space with OpenTTS & Live Slide Previews
 import os
 import json
 import tempfile
@@ -9,23 +9,26 @@ import gradio as gr
 from agents import Agent, AgentRunner, handoff
 from agents.extensions.handoff_prompt import RECOMMENDED_PROMPT_PREFIX
 
-# OpenTTS client
-from open_tts import OpenTTSClient
+# === Coqui TTS Integration ===
+from TTS.api import TTS
 
-# Initialize OpenTTS with your server URL (set via env var or default localhost)
-opentts = OpenTTSClient(api_url=os.getenv("OPENTTS_API_URL", "http://localhost:5500"))
+# Initialize Coqui TTS (choose a model)
+# Using Tacotron2-DDC model from LJSpeech
+tts = TTS(
+    model_name="tts_models/en/ljspeech/tacotron2-DDC",
+    progress_bar=False,
+    gpu=False
+)
 
 def generate_tts_audio(script: str) -> str:
     """
-    Synthesize speech using OpenTTS and save to a temp MP3 file.
+    Synthesize speech using Coqui TTS and save to a WAV file.
     Returns the local file path to the audio.
     """
-    # Request synthesis (voice and format can be configured)
-    audio_bytes = opentts.synthesize(text=script, voice="alloy", format="mp3")
-    # Write to a temp file
-    out_path = os.path.join(tempfile.gettempdir(), "voiceover.mp3")
-    with open(out_path, "wb") as f:
-        f.write(audio_bytes)
+    # Determine output path in temp directory
+    out_path = os.path.join(tempfile.gettempdir(), "voiceover.wav")
+    # Render the speech to the file
+    tts.tts_to_file(text=script, file_path=out_path)
     return out_path
 
 # --- Multi-Agent Scaffold ---
@@ -70,7 +73,7 @@ voice_agent = Agent(
     name="Voiceover Agent",
     instructions=(
         f"{RECOMMENDED_PROMPT_PREFIX}\n"
-        "Create a 1-2 minute voiceover script. Return JSON with keys 'script'."
+        "Create a 1-2 minute voiceover script. Return JSON with key 'script'."
     )
 )
 
@@ -118,11 +121,11 @@ def build_workshop_bundle(topic: str, audience: str):
             jf.write(json.dumps(results, indent=2))
         zipf.write(out_json, 'workshop_outputs.json')
 
-        # Slides
-        slides_file = os.path.join(tmpdir, 'slides.json')
-        with open(slides_file, 'w') as sf:
+        # Slides JSON & HTML
+        slide_json_file = os.path.join(tmpdir, 'slides.json')
+        with open(slide_json_file, 'w') as sf:
             sf.write(json.dumps(slides_json, indent=2))
-        zipf.write(slides_file, 'slides.json')
+        zipf.write(slide_json_file, 'slides.json')
 
         slide_html_file = os.path.join(tmpdir, 'slides.html')
         with open(slide_html_file, 'w') as hf:
@@ -143,7 +146,8 @@ def build_workshop_bundle(topic: str, audience: str):
 
 # --- Gradio UI ---
 def run_app(topic, audience):
-    return build_workshop_bundle(topic, audience)
+    slide_html, audio_path, zip_path = build_workshop_bundle(topic, audience)
+    return slide_html, audio_path, zip_path
 
 with gr.Blocks(title='🚀 Workshop in a Box') as demo:
     gr.Markdown('# Workshop in a Box')