app.py

# app.py
import os
import pandas as pd
import gradio as gr
import comtradeapicall
from openai import OpenAI
from deep_translator import GoogleTranslator
import matplotlib.pyplot as plt
import spaces

# --- بارگذاری داده‌های HS Code ---
HS_CSV_URL = (
    "https://raw.githubusercontent.com/"
    "datasets/harmonized-system/master/data/harmonized-system.csv"
)
hs_df = pd.read_csv(HS_CSV_URL, dtype=str)

def get_product_name(hs_code: str) -> str:
    code4 = str(hs_code).zfill(4)
    row = hs_df[hs_df["hscode"] == code4]
    return row.iloc[0]["description"] if not row.empty else "–"

def get_importers(hs_code: str, year: str, month: str):
    product_name = get_product_name(hs_code)
    period = f"{year}{int(month):02d}"
    df = comtradeapicall.previewFinalData(
        typeCode='C', freqCode='M', clCode='HS', period=period,
        reporterCode=None, cmdCode=hs_code, flowCode='M',
        partnerCode=None, partner2Code=None,
        customsCode=None, motCode=None,
        maxRecords=500, includeDesc=True
    )
    if df is None or df.empty:
        return product_name, pd.DataFrame()

    std_map = {
        'کد کشور': 'ptCode',
        'نام کشور': 'ptTitle',
        'ارزش CIF': 'TradeValue'
    }
    code_col = std_map['کد کشور'] if 'ptCode' in df.columns else next((c for c in df.columns if 'code' in c.lower()), None)
    title_col = std_map['نام کشور'] if 'ptTitle' in df.columns else next((c for c in df.columns if 'title' in c.lower()), None)
    value_col = std_map['ارزش CIF'] if 'TradeValue' in df.columns else next((c for c in df.columns if 'value' in c.lower()), None)

    if not (code_col and title_col and value_col):
        return product_name, df

    df_sorted = df.sort_values(value_col, ascending=False).head(10)
    out = df_sorted[[code_col, title_col, value_col]]
    out.columns = ['کد کشور', 'نام کشور', 'ارزش CIF']
    return product_name, out

# --- تابع ترسیم نمودار ۵ کشور برتر ---
def plot_top5_chart(table_data: pd.DataFrame):
    if table_data is None or table_data.empty:
        return None

    df_sorted = table_data.sort_values("ارزش CIF", ascending=False).head(5)
    fig, ax = plt.subplots(figsize=(6, 4))
    ax.bar(df_sorted["نام کشور"], df_sorted["ارزش CIF"], color="skyblue")
    ax.set_ylabel("ارزش CIF (USD)")
    ax.set_title("۵ کشور اول واردکننده")
    ax.tick_params(axis='x', rotation=45)
    plt.tight_layout()
    return fig

# --- مشاوره با GPT + ترجمه فارسی ---
openai_client = OpenAI(api_key=os.getenv("OPENAI"))
translator = GoogleTranslator(source='en', target='fa')

@spaces.GPU
def provide_advice(table_data: pd.DataFrame, hs_code: str, year: str, month: str):
    if table_data is None or table_data.empty:
        return "ابتدا نمایش داده‌های واردات را انجام دهید."

    df_limited = table_data.head(10)
    table_str = df_limited.to_string(index=False)
    period = f"{year}/{int(month):02d}"
    prompt = (
        f"The following table shows the top {len(df_limited)} countries by CIF value importing HS code {hs_code} during {period}:\n"
        f"{table_str}\n\n"
        "Please provide a detailed and comprehensive analysis of market trends, risks, "
        "and opportunities for a new exporter entering this market."
    )

    try:
        response = openai_client.chat.completions.create(
            model="gpt-3.5-turbo",
            messages=[
                {"role": "system", "content": "You are an expert in international trade and export consulting."},
                {"role": "user", "content": prompt}
            ],
            max_tokens=1000,
            temperature=0.7
        )
        english_response = response.choices[0].message.content
        return translator.translate(english_response)
    except Exception as e:
        return f"خطا در تولید مشاوره: {e}"

# --- رابط کاربری Gradio ---
with gr.Blocks() as demo:
    gr.Markdown("## DIGINORON.COM ابزار هوش مصنوعی برای مشاوره صادرات کالا به کشورهای هدف")

    with gr.Row():
        inp_hs = gr.Textbox(label="کد HS", placeholder="مثلاً 1006")
        inp_year = gr.Textbox(label="سال", placeholder="مثلاً 2023")
        inp_month = gr.Textbox(label="ماه", placeholder="مثلاً 1 تا 12")

    btn_show = gr.Button("نمایش داده‌های واردات")

    out_name = gr.Markdown(label="**نام محصول**")
    out_table = gr.Dataframe(datatype="pandas", interactive=True)
    out_chart = gr.Plot(label="نمودار ۵ کشور اول واردکننده")

    # دکمه اول: دو خروجی با هم
    def combined_output(hs_code, year, month):
        name, table = get_importers(hs_code, year, month)
        chart = plot_top5_chart(table)
        return name, table, chart

    btn_show.click(
        fn=combined_output,
        inputs=[inp_hs, inp_year, inp_month],
        outputs=[out_name, out_table, out_chart]
    )

    # دکمه دوم: مشاوره تخصصی
    btn_advice = gr.Button("ارائه مشاوره تخصصی")
    out_advice = gr.Textbox(label="مشاوره تخصصی", lines=8)

    btn_advice.click(
        fn=provide_advice,
        inputs=[out_table, inp_hs, inp_year, inp_month],
        outputs=out_advice
    )

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