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import streamlit as st
import requests
import pandas as pd

# ---------------------- CONFIG ----------------------
USERNAME = "[email protected]"
PASSWORD = "Vedavathi@04,jqe4His8AcuFJucZz5NBHfGU"
TOKEN_URL = "https://login.salesforce.com/services/oauth2/token"
API_VERSION = "v60.0"

# ---------------------- AUTH ----------------------
@st.cache_data
def get_salesforce_token():
    data = {
        "grant_type": "password",
        "username":[email protected] ,
        "password":Vedavathi@04
    }
    response = requests.post(TOKEN_URL, data=data)
    if response.status_code != 200:
        st.error("Authentication failed!")
        return None, None
    res = response.json()
    return res["access_token"], res["instance_url"]

# ---------------------- FETCH DATA ----------------------
def fetch_pole_data(instance_url, access_token):
    headers = {
        "Authorization": f"Bearer {access_token}"
    }
    query = "SELECT Id, Name, Location__c, Status__c, Installation_Date__c FROM Pole__c LIMIT 100"
    url = f"{instance_url}/services/data/{API_VERSION}/query?q={query}"
    response = requests.get(url, headers=headers)
    if response.status_code != 200:
        st.error("Failed to fetch Pole data")
        return pd.DataFrame()
    records = response.json().get("records", [])
    df = pd.DataFrame(records)
    return df[["Id", "Name", "Location__c", "Status__c", "Installation_Date__c"]]

# ---------------------- UI ----------------------
st.title("🚦 Vedavathi Smart Poles Viewer")

token, instance_url = get_salesforce_token()

if token:
    if st.button("πŸ”„ Refresh Pole Data"):
        df = fetch_pole_data(instance_url, token)
        if not df.empty:
            st.success("Pole data loaded successfully!")
            st.dataframe(df, use_container_width=True)
        else:
            st.warning("No data found.")
else:
    st.error("Salesforce authentication failed. Check credentials.")