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import os
import requests
import json
import gradio as gr
import re

# Hugging Face ํ™˜๊ฒฝ ๋ณ€์ˆ˜๋กœ๋ถ€ํ„ฐ RapidAPI ํ‚ค์™€ ํ˜ธ์ŠคํŠธ ๊ฐ€์ ธ์˜ค๊ธฐ
AA_KEY = os.getenv("AA_KEY")
AA_HOST = "youtube-transcriptor.p.rapidapi.com"

# ์œ ํŠœ๋ธŒ URL์—์„œ ๋น„๋””์˜ค ID๋ฅผ ์ถ”์ถœํ•˜๋Š” ํ•จ์ˆ˜
def get_video_id(youtube_url):
    # ์ผ๋ฐ˜์ ์ธ YouTube URL (watch?v=...)
    match = re.search(r"(?:v=|\/)([0-9A-Za-z_-]{11}).*", youtube_url)
    if match:
        return match.group(1)
    
    # YouTube Shorts URL
    match = re.search(r"youtu\.be\/([0-9A-Za-z_-]{11})", youtube_url)
    if match:
        return match.group(1)
    
    # YouTube Shorts URL (/shorts/...)
    match = re.search(r"\/shorts\/([0-9A-Za-z_-]{11})", youtube_url)
    if match:
        return match.group(1)
    
    return None

# ์ž๋ง‰ ์–ธ์–ด ์šฐ์„ ์ˆœ์œ„ ๋ฆฌ์ŠคํŠธ
LANGUAGE_PRIORITY = ['ko', 'en', 'ja', 'zh']

# ์œ ํŠœ๋ธŒ ์ž๋ง‰์„ ์š”์ฒญํ•˜๋Š” ํ•จ์ˆ˜ (์–ธ์–ด ์šฐ์„ ์ˆœ์œ„๋ฅผ ์ ์šฉํ•˜์—ฌ ์‹œ๋„)
def get_youtube_transcript(youtube_url):
    # ๋น„๋””์˜ค ID ์ถ”์ถœ
    video_id = get_video_id(youtube_url)
    if video_id is None:
        return {"error": "์ž˜๋ชป๋œ ์œ ํŠœ๋ธŒ URL์ž…๋‹ˆ๋‹ค. ๋น„๋””์˜ค ID๋ฅผ ์ฐพ์„ ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค."}
    
    url = "https://youtube-transcriptor.p.rapidapi.com/transcript"
    
    headers = {
        "x-rapidapi-key": AA_KEY,
        "x-rapidapi-host": AA_HOST
    }

    # ์–ธ์–ด ์šฐ์„ ์ˆœ์œ„์— ๋”ฐ๋ผ ์ˆœ์ฐจ์ ์œผ๋กœ ์š”์ฒญ์„ ์‹œ๋„
    for lang in LANGUAGE_PRIORITY:
        querystring = {"video_id": video_id, "lang": lang}
        response = requests.get(url, headers=headers, params=querystring)
        
        if response.status_code == 200:
            try:
                data = response.json()
                
                # API ์‘๋‹ต ๊ตฌ์กฐ ํ™•์ธ ๋ฐ ์˜ฌ๋ฐ”๋ฅธ ์ฒ˜๋ฆฌ
                if isinstance(data, dict) and "transcript" in data:
                    return {"language": lang, "data": data}
                elif isinstance(data, list) and len(data) > 0 and "text" in data[0]:
                    return {"language": lang, "data": {"transcript": data}}
                else:
                    continue  # ํ˜„์žฌ ์–ธ์–ด์— ์ž๋ง‰์ด ์—†์œผ๋ฉด ๋‹ค์Œ ์–ธ์–ด๋กœ ์‹œ๋„
            
            except json.JSONDecodeError as e:
                continue  # JSON ๋””์ฝ”๋”ฉ ์˜ค๋ฅ˜ ์‹œ ๋‹ค์Œ ์–ธ์–ด๋กœ ์‹œ๋„

    # ๋ชจ๋“  ์–ธ์–ด์—์„œ ์ž๋ง‰์„ ์ฐพ์ง€ ๋ชปํ•œ ๊ฒฝ์šฐ
    return {"error": "์šฐ์„ ์ˆœ์œ„ ์–ธ์–ด๋กœ ์ž๋ง‰์„ ์ฐพ์„ ์ˆ˜ ์—†์Šต๋‹ˆ๋‹ค."}

# Gradio ์ธํ„ฐํŽ˜์ด์Šค ์ •์˜
def youtube_transcript_interface(youtube_url):
    # ์ž๋ง‰ ๋ฐ์ดํ„ฐ ๊ฐ€์ ธ์˜ค๊ธฐ
    transcript_data = get_youtube_transcript(youtube_url)
    
    # ๊ฒฐ๊ณผ ์ถœ๋ ฅ
    return json.dumps(transcript_data, ensure_ascii=False, indent=2)

# Gradio ์ธํ„ฐํŽ˜์ด์Šค ์ƒ์„ฑ
interface = gr.Interface(
    fn=youtube_transcript_interface, 
    inputs="text", 
    outputs="text",
    title="YouTube ์ž๋ง‰ ์ถ”์ถœ๊ธฐ",
    description="์œ ํŠœ๋ธŒ URL์„ ์ž…๋ ฅํ•˜์„ธ์š”."
)

# Gradio ์ธํ„ฐํŽ˜์ด์Šค ์‹คํ–‰
interface.launch()