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update app

update app

update app

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.gitignore

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+.venv

README.md

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+---
+title: Lettercast.ai API
+emoji: 🎙️
+colorFrom: gray
+colorTo: blue
+sdk: gradio
+sdk_version: 4.44.0
+app_file: app.py
+pinned: false
+---
+
+Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference

app.py

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+import traceback
+import gradio as gr
+import requests
+import time
+import os
+
+# Read from environment variables with default values if not set
+LETTERCAST_API_CAST_TEMPLATE = (
+    f'{os.environ.get("LETTERCAST_API_CAST")}/feeds/{{feed_id}}/casts'
+)
+TTS_BACKEND = "openai-tts-1-hd"  # Default TTS backend
+WAIT_TIME_S = 30
+
+
+def create_cast(token, feed_id, url, file, detail_level, create_video, hosts):
+    if not url and file is None:
+        return {"error": "Please provide a URL or upload a file."}, None, None
+    if not token or not feed_id:
+        return {"error": "Please provide both Token and Feed ID."}, None, None
+    headers = {"Authorization": f"Bearer {token}"}
+    data = {
+        "hosts": hosts,
+        "detail_level": detail_level,
+        "create_video": str(create_video).lower(),
+        "tts_backend": TTS_BACKEND,
+    }
+    if url:
+        data["url"] = url
+    endpoint_url = LETTERCAST_API_CAST_TEMPLATE.format(feed_id=feed_id)
+
+    if file is not None:
+        with open(file, "rb") as f:
+            files = {"file": (os.path.basename(file), f, "application/pdf")}
+            response = requests.post(
+                endpoint_url, headers=headers, data=data, files=files
+            )
+    else:
+        response = requests.post(endpoint_url, headers=headers, data=data)
+
+    if response.status_code == 200:
+        resp_data = response.json()
+        audio_file_url = resp_data.get("audio_file_url")
+        video_file_url = resp_data.get("video_file_url")
+        return resp_data, audio_file_url, video_file_url
+    else:
+        error_message = f"Error {response.status_code}: {response.text}"
+        return {"error": error_message}, None, None
+
+
+def poll_until_ready(
+    audio_file_url, video_file_url, create_video, progress=gr.Progress()
+):
+    max_retries = 60  # Max wait time of 5 minutes (assuming 5s per retry)
+    wait_time = WAIT_TIME_S  # seconds
+    audio_ready = False
+    video_ready = False
+    for i in range(max_retries):
+        progress(i / max_retries)
+        if audio_file_url and not audio_ready:
+            try:
+                response = requests.get(audio_file_url)
+                if response.status_code == 200:
+                    audio_ready = True
+            except Exception:
+                traceback.print_exc()  # Ignore exceptions and retry
+        if create_video and video_file_url and not video_ready:
+            try:
+                response = requests.get(video_file_url)
+                if response.status_code == 200:
+                    video_ready = True
+            except Exception:
+                traceback.print_exc()
+        if audio_ready and (not create_video or video_ready):
+            status_text = "Media is ready."
+            audio_player_html = (
+                create_audio_player(audio_file_url) if audio_ready else ""
+            )
+            video_player_html = (
+                create_video_player(video_file_url) if video_ready else ""
+            )
+            progress(1.0)
+            return status_text, audio_player_html, video_player_html
+        else:
+            time.sleep(wait_time)
+    return "Media not available yet.", "", ""
+
+
+def create_audio_player(audio_url):
+    if audio_url:
+        return f"""
+        <audio controls controlsList="nodownload">
+            <source src="{audio_url}" type="audio/mpeg">
+            Your browser does not support the audio element.
+        </audio>
+        """
+    else:
+        return ""
+
+
+def create_video_player(video_url):
+    if video_url:
+        return f"""
+        <video controls controlsList="nodownload" width="100%">
+            <source src="{video_url}" type="video/mp4">
+            Your browser does not support the video tag.
+        </video>
+        """
+    else:
+        return ""
+
+
+with gr.Blocks() as demo:
+    gr.Markdown("## Test the Lettercast.ai API (beta)")
+    # gr.Markdown(
+    #     "To get your access token visit [developer.lettercast.ai](https://developer.lettercast.ai)"
+    # )
+    with gr.Row():
+        token = gr.Textbox(label="Token", placeholder="Enter your token")
+        feed_id = gr.Textbox(label="Feed ID", placeholder="Enter your feed ID")
+    with gr.Row():
+        url = gr.Textbox(label="URL", placeholder="Enter a URL")
+        file = gr.File(label="Upload a PDF file", type="filepath")
+    with gr.Row():
+        detail_level = gr.Dropdown(
+            choices=["summary", "full"], label="Detail Level", value="summary"
+        )
+        hosts = gr.Dropdown(
+            choices=["single_host", "two_hosts"], label="Hosts", value="single_host"
+        )
+        create_video = gr.Checkbox(label="Create Video (PDFs)", value=False)
+
+    # Button for creating pod and showing the JSON response
+    create_pod_btn = gr.Button("Create Pod")
+    output = gr.JSON(label="Response")
+    audio_pod_data = gr.State()
+    video_pod_data = gr.State()
+
+    # Button for starting the polling process
+    start_polling_btn = gr.Button("Start Polling")
+    status = gr.Textbox(label="Status")
+    audio_player = gr.HTML(label="Generated Audio")
+    video_player = gr.HTML(label="Generated Video")
+
+    # Handle pod creation
+    create_pod_btn.click(
+        fn=create_cast,
+        inputs=[
+            token,
+            feed_id,
+            url,
+            file,
+            detail_level,
+            create_video,
+            hosts,
+        ],
+        outputs=[output, audio_pod_data, video_pod_data],
+        show_progress="minimal",
+        concurrency_limit=1,
+    )
+
+    # Handle polling for media readiness
+    start_polling_btn.click(
+        fn=lambda audio_pod_data, video_pod_data, create_video: poll_until_ready(
+            audio_pod_data, video_pod_data, create_video
+        ),
+        inputs=[audio_pod_data, video_pod_data, create_video],
+        outputs=[status, audio_player, video_player],
+        show_api=False,
+    )
+
+demo.launch()