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import gradio as gr
from huggingface_hub import InferenceClient
from PyPDF2 import PdfReader
import os

# PDF ํ…์ŠคํŠธ ๋ฏธ๋ฆฌ ์ฝ์–ด์˜ค๊ธฐ
def extract_pdf_text(pdf_paths):
    full_text = ""
    for path in pdf_paths:
        reader = PdfReader(path)
        for page in reader.pages:
            text = page.extract_text()
            if text:
                full_text += text + "\n"
    return full_text.strip()

# ๋ ˆํผ๋Ÿฐ์Šค PDF ํ…์ŠคํŠธ ๋ถˆ๋Ÿฌ์˜ค๊ธฐ
pdf_context = extract_pdf_text([
    "assets/Programming-Fundamentals-1570222270.pdf",
    "assets/1๋ถ„ํŒŒ์ด์ฌ_๊ฐ•์˜์ž๋ฃŒ_์ „์ฒด.pdf"
])

# ๋ฌด๋ฃŒ ์‚ฌ์šฉ ๊ฐ€๋Šฅํ•œ FLAN-T5 ๋ชจ๋ธ ์‚ฌ์šฉ
client = InferenceClient(
    model="tiiuae/falcon-rw-1b", 
    token=os.getenv("HUGGINGFACEHUB_API_TOKEN")
)

def respond(message, history, system_message, max_tokens, temperature, top_p):
    # ๋‹จ์ˆœ ํ”„๋กฌํ”„ํŠธ ๊ตฌ์„ฑ (flan-t5๋Š” chat ๊ตฌ์กฐ๊ฐ€ ์•„๋‹˜)
    prompt = f"{system_message}\n\n๋ฌธ์„œ ์š”์•ฝ:\n{pdf_context}\n\n์งˆ๋ฌธ: {message}\n๋‹ต๋ณ€:"
    result = client.text_generation(
        prompt=prompt,
        max_new_tokens=max_tokens,
        temperature=temperature,
        top_p=top_p
    )
    return result.strip()

demo = gr.ChatInterface(
    fn=respond,
    additional_inputs=[
        gr.Textbox(value="๋‹น์‹ ์€ ํŒŒ์ด์ฌ API ๋ฌธ์„œ์— ๊ธฐ๋ฐ˜ํ•ด ๋‹ต๋ณ€ํ•˜๋Š” ์œ ์šฉํ•œ ์กฐ๊ต์ž…๋‹ˆ๋‹ค.", label="System message"),
        gr.Slider(minimum=1, maximum=1024, value=512, step=1, label="Max new tokens"),
        gr.Slider(minimum=0.1, maximum=4.0, value=0.7, step=0.1, label="Temperature"),
        gr.Slider(minimum=0.1, maximum=1.0, value=0.95, step=0.05, label="Top-p"),
    ],
    title="๐Ÿ“˜ ํŒŒ์ด์ฌ API ๋ ˆํผ๋Ÿฐ์Šค ์ฑ—๋ด‡ (FLAN-T5 ๊ธฐ๋ฐ˜)",
    description="ํ•œ๊ตญ๊ณต๋Œ€ ์ˆ˜์—…์ž๋ฃŒ ๊ธฐ๋ฐ˜์œผ๋กœ ์งˆ๋ฌธ์— ๋‹ตํ•˜๋Š” ๋ฌด๋ฃŒ ์ฑ—๋ด‡์ž…๋‹ˆ๋‹ค."
)

if __name__ == "__main__":
    demo.launch()