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app.py

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+# app.py
+import re
+import time
+import json
+import os
+import gradio as gr
+import pandas as pd
+
+HISTORY_FILE = "watch_history.json"
+HISTORY_HEADERS = ["Timestamp", "Video ID", "URL"]
+
+def load_history() -> list:
+    """Load watch history from JSON."""
+    if os.path.exists(HISTORY_FILE):
+        with open(HISTORY_FILE, "r", encoding="utf-8") as f:
+            data = json.load(f)
+            return [[d.get("Timestamp"), d.get("Video ID"), d.get("URL")] for d in data]
+    return []
+
+def save_history(history: list):
+    """Save readable JSON to disk."""
+    data = [{"Timestamp": r[0], "Video ID": r[1], "URL": r[2]} for r in history]
+    with open(HISTORY_FILE, "w", encoding="utf-8") as f:
+        json.dump(data, f, indent=2)
+
+watch_history = load_history()
+
+def extract_video_id(url: str) -> str | None:
+    pattern = r"(?:v=|youtu\.be/|embed/)([a-zA-Z0-9_-]{11})"
+    match = re.search(pattern, url)
+    return match.group(1) if match else None
+
+def generate_embed_html(url: str) -> str:
+    """Generate embeddable YouTube iframe."""
+    video_id = extract_video_id(url)
+    if not video_id:
+        return "<p style='color:red;'>Invalid YouTube URL.</p>"
+    embed_url = f"https://www.youtube.com/embed/{video_id}?autoplay=1"
+    return f"""
+    <iframe width="720" height="405"
+            src="{embed_url}"
+            title="YouTube Live Stream"
+            frameborder="0"
+            allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture"
+            allowfullscreen></iframe>
+    """
+
+def update_history(url: str, current_table) -> list:
+    """Add or update timestamp entry in history."""
+    # Convert DataFrame to list-of-lists
+    if isinstance(current_table, pd.DataFrame):
+        current_table = current_table.values.tolist()
+
+    video_id = extract_video_id(url)
+    if not video_id:
+        return current_table
+
+    timestamp = time.strftime("%Y-%m-%d %H:%M:%S")
+    updated = [r for r in current_table if r[1] != video_id]
+    updated.insert(0, [timestamp, video_id, url])
+    save_history(updated)
+    return updated
+
+def watch_video(url: str, current_table) -> tuple[str, list]:
+    """Play video and update log."""
+    if not url:
+        return "<p style='color:red;'>Please enter a valid YouTube URL.</p>", current_table
+    return generate_embed_html(url), update_history(url, current_table)
+
+def clear_history() -> list:
+    save_history([])
+    return []
+
+def replay_from_log(evt: gr.SelectData, current_table):
+    """Replay video from history row click."""
+    if isinstance(current_table, pd.DataFrame):
+        current_table = current_table.values.tolist()
+    row_index = evt.index[0]
+    try:
+        url = current_table[row_index][2]
+        return generate_embed_html(url), update_history(url, current_table)
+    except (IndexError, TypeError, KeyError):
+        return "<p style='color:red;'>Invalid selection.</p>", current_table
+
+with gr.Blocks(title="YouTube Live Watcher") as demo:
+    gr.Markdown("# 🎥 YouTube Live Stream Viewer")
+    gr.Markdown("Paste a YouTube live URL or click from history to replay — timestamps auto-update.")
+
+    with gr.Row():
+        url_input = gr.Textbox(label="YouTube Live URL", placeholder="https://www.youtube.com/watch?v=...")
+        watch_button = gr.Button("▶️ Watch Live")
+        clear_button = gr.Button("🧹 Clear History")
+
+    output_html = gr.HTML(label="Live Stream")
+    history_output = gr.DataFrame(
+        headers=HISTORY_HEADERS,
+        label="📜 Watch History (Click to replay)",
+        interactive=False,
+        value=watch_history
+    )
+
+    watch_button.click(fn=watch_video, inputs=[url_input, history_output], outputs=[output_html, history_output])
+    clear_button.click(fn=clear_history, outputs=history_output)
+    history_output.select(fn=replay_from_log, inputs=history_output, outputs=[output_html, history_output])
+
+if __name__ == "__main__":
+    demo.launch()

requirements.txt

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+gradio
+pandas

watch_history.json

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+[
+  {
+    "Timestamp": "2025-10-29 19:26:16",
+    "Video ID": "PNhwNhOXsIk",
+    "URL": "\t\nhttps://www.youtube.com/watch?v=PNhwNhOXsIk"
+  },
+  {
+    "Timestamp": "2025-10-29 19:26:16",
+    "Video ID": "zD9UQOX139U",
+    "URL": "https://www.youtube.com/watch?v=zD9UQOX139U"
+  },
+  {
+    "Timestamp": "2025-10-29 19:08:57",
+    "Video ID": "Q8A7zD9zFT0",
+    "URL": "\t\n\t\nhttps://www.youtube.com/watch?v=Q8A7zD9zFT0"
+  },
+  {
+    "Timestamp": "2025-10-29 19:08:57",
+    "Video ID": "xwGJfiqUETY",
+    "URL": "\t\nhttps://www.youtube.com/watch?v=xwGJfiqUETY"
+  }
+]