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import streamlit as st
import requests
import os
import datetime
from openai import OpenAI

# =============================
# CONFIG
# =============================
st.set_page_config(
    page_title="🌾 Smart Agro AI",
    layout="wide",
    initial_sidebar_state="collapsed"
)

# Groq Client
client = OpenAI(
    api_key=os.environ.get("GROQ_API_KEY"),
    base_url="https://api.groq.com/openai/v1"
)

# =============================
# HEADER
# =============================
st.title("🌾 Smart Agro AI")
st.caption("An intelligent farming system that uses Artificial Intelligence to help farmers make better decisions.")

# =============================
# MENU
# =============================
menu = st.radio(
    "",
    ["🌦 Weather",
     "🌾 Crop Estimator",
     "📈 Market & Profit",
     "🧪 Fertilizer AI",
     "📅 Crop Calendar",
     "🤖 Smart Advisory",
     "💬 Chatbot"],
    horizontal=True
)

# =============================
# WEATHER
# =============================
if menu == "🌦 Weather":

    st.subheader("🌦 Live Weather")
    city = st.text_input("Enter City Name")

    def get_coordinates(city):
        geo_url = f"https://geocoding-api.open-meteo.com/v1/search?name={city}"
        geo_data = requests.get(geo_url).json()

        if "results" in geo_data:
            return geo_data["results"][0]["latitude"], geo_data["results"][0]["longitude"]
        return None, None

    if st.button("Get Weather"):
        with st.spinner("Fetching weather..."):
            lat, lon = get_coordinates(city)

            if lat:
                weather_url = f"https://api.open-meteo.com/v1/forecast?latitude={lat}&longitude={lon}&current_weather=true"
                data = requests.get(weather_url).json()

                temp = data["current_weather"]["temperature"]
                wind = data["current_weather"]["windspeed"]

                st.success(f"🌡 Temperature in {city}: {temp}°C")
                st.info(f"💨 Wind Speed: {wind} km/h")

                if wind > 25:
                    st.warning("💨 Strong wind detected — avoid spraying.")
                elif wind > 15:
                    st.info("💨 Moderate wind — safe activities.")
                else:
                    st.success("💨 Calm wind — ideal conditions.")
            else:
                st.error("City not found.")

# =============================
# CROP ESTIMATOR
# =============================
elif menu == "🌾 Crop Estimator":

    st.subheader("🌾 Crop Cost & Yield Estimator")

    crops = {
        "Wheat": {"cost": 50000, "yield": 30},
        "Rice": {"cost": 60000, "yield": 35},
        "Maize": {"cost": 45000, "yield": 28},
        "Sugarcane": {"cost": 80000, "yield": 60},
        "Cotton": {"cost": 70000, "yield": 25}
    }

    crop = st.selectbox("Select Crop", list(crops.keys()))
    area = st.number_input("Enter land area (acres)", min_value=1)

    if st.button("Calculate"):
        total_cost = crops[crop]["cost"] * area
        total_yield = crops[crop]["yield"] * area

        st.success(f"💰 Estimated Cost: Rs {total_cost}")
        st.info(f"🌾 Expected Yield: {total_yield} maunds")

# =============================
# MARKET & PROFIT
# =============================
elif menu == "📈 Market & Profit":

    st.subheader("📈 Market Price & Profit Predictor")

    prices = {
        "Wheat": 3900,
        "Rice": 4500,
        "Maize": 3500,
        "Sugarcane": 3000,
        "Cotton": 8500
    }

    crop = st.selectbox("Select Crop", list(prices.keys()))
    area = st.number_input("Enter land area (acres)", min_value=1)

    if st.button("Predict Profit"):
        avg_yield = 30
        revenue = avg_yield * area * prices[crop]
        cost = 50000 * area
        profit = revenue - cost

        st.success(f"💰 Revenue: Rs {revenue}")
        st.warning(f"📉 Cost: Rs {cost}")
        st.info(f"🏆 Profit: Rs {profit}")

# =============================
# FERTILIZER AI
# =============================
elif menu == "🧪 Fertilizer AI":

    st.subheader("🧪 Smart Fertilizer Recommendation")

    crop = st.text_input("Enter crop name")

    if st.button("Get Recommendation"):
        if crop.lower() == "wheat":
            rec = "Use Urea + DAP. Apply Nitrogen in split doses."
        elif crop.lower() == "rice":
            rec = "Apply NPK 20-20-20 and maintain flooded field."
        else:
            rec = "Use balanced NPK fertilizer with organic compost."

        st.success(rec)

# =============================
# CROP CALENDAR
# =============================
# =============================
# 📅 ADVANCED CROP CALENDAR
# =============================
elif menu == "📅 Crop Calendar":

    st.subheader("📅 Seasonal Crop Calendar (Pakistan)")

    # Crop Data
    crops_data = {
        "Wheat": {
            "sowing": ["November", "December"],
            "harvest": ["April", "May"],
            "use": "Staple food crop (flour, roti, bread)"
        },
        "Rice": {
            "sowing": ["June", "July"],
            "harvest": ["October", "November"],
            "use": "Staple food crop (boiled rice, export)"
        },
        "Maize": {
            "sowing": ["February", "March", "July", "August"],
            "harvest": ["June", "November"],
            "use": "Food, poultry feed, industrial use"
        },
        "Cotton": {
            "sowing": ["April", "May"],
            "harvest": ["September", "October"],
            "use": "Textile industry"
        },
        "Sugarcane": {
            "sowing": ["February", "March", "September", "October"],
            "harvest": ["November", "December", "January", "February", "March"],
            "use": "Sugar production"
        },
        "Mustard": {
            "sowing": ["October", "November"],
            "harvest": ["February", "March"],
            "use": "Cooking oil"
        },
        "Gram (Chickpea)": {
            "sowing": ["October", "November"],
            "harvest": ["March", "April"],
            "use": "Pulse / protein food"
        },
        "Sunflower": {
            "sowing": ["January", "February", "June"],
            "harvest": ["May", "June", "October"],
            "use": "Cooking oil"
        }
    }

    # User selects month
    selected_month = st.selectbox(
        "Select Month",
        ["January","February","March","April","May","June",
         "July","August","September","October","November","December"]
    )

    st.info(f"📆 Selected Month: {selected_month}")

    sowing_crops = []
    harvest_crops = []

    for crop, details in crops_data.items():
        if selected_month in details["sowing"]:
            sowing_crops.append((crop, details["use"]))
        if selected_month in details["harvest"]:
            harvest_crops.append((crop, details["use"]))

    st.markdown("### 🌱 Crops to Sow")

    if sowing_crops:
        for crop, use in sowing_crops:
            st.success(f"🌾 {crop} — Use: {use}")
    else:
        st.write("No major sowing crop this month.")

    st.markdown("### 🌾 Crops to Harvest")

    if harvest_crops:
        for crop, use in harvest_crops:
            st.warning(f"🌾 {crop} — Use: {use}")
    else:
        st.write("No major harvesting crop this month.")
# =============================
# SMART ADVISORY
# =============================
elif menu == "🤖 Smart Advisory":

    st.subheader("🤖 AI Farming Advisory")

    advisory_crop = st.text_input("Crop")
    advisory_soil = st.selectbox("Soil Type", ["Sandy", "Clay", "Loamy"])
    advisory_season = st.selectbox("Season", ["Summer", "Winter", "Monsoon", "Spring"])

    if st.button("Generate Advisory"):
        with st.spinner("Generating..."):
            prompt = f"""
            You are an expert agricultural advisor.
            Crop: {advisory_crop}
            Soil: {advisory_soil}
            Season: {advisory_season}
            Provide fertilizer, irrigation, disease prevention, yield and market advice.
            """

            try:
                response = client.responses.create(
                    model="openai/gpt-oss-20b",
                    input=prompt
                )
                st.success("✅ Advisory Generated")
                st.write(response.output_text)
            except Exception as e:
                st.error(str(e))

# =============================
# CHATBOT
# =============================
elif menu == "💬 Chatbot":

    st.subheader("💬 Farming Assistant Chatbot")

    if "messages" not in st.session_state:
        st.session_state.messages = []

    for msg in st.session_state.messages:
        st.chat_message(msg["role"]).write(msg["content"])

    if prompt := st.chat_input("Ask farming question..."):
        st.session_state.messages.append({"role": "user", "content": prompt})
        st.chat_message("user").write(prompt)

        try:
            response = client.responses.create(
                model="openai/gpt-oss-20b",
                input=prompt
            )
            reply = response.output_text
        except Exception as e:
            reply = str(e)

        st.session_state.messages.append({"role": "assistant", "content": reply})
        st.chat_message("assistant").write(reply)