import mysql.connector
import os
from dotenv import load_dotenv

load_dotenv()

def lire_alertes_sondes():
    conn = None
    cursor = None
    try:
        conn = get_connection()
        cursor = conn.cursor(dictionary=True)
        cursor.execute("SELECT * FROM Alertes_Chaufferie ORDER BY Debut_defaut DESC")
        return cursor.fetchall()
    except Exception as e:
        import streamlit as st
        st.warning(f"Erreur lecture alertes : {e}")
        return []
    finally:
        if cursor:
            cursor.close()
        if conn and conn.is_connected():
            conn.close()

def acquitter_alerte(id_alerte):
    conn = None
    cursor = None
    try:
        conn = get_connection()
        cursor = conn.cursor()
        cursor.execute("UPDATE Alertes_Chaufferie SET Etat = 'Acquitté' WHERE Id = %s", (id_alerte,))
        conn.commit()
    except Exception as e:
        import streamlit as st
        st.warning(f"Erreur lors de l'acquittement : {e}")
    finally:
        if cursor:
            cursor.close()
        if conn and conn.is_connected():
            conn.close()


def verifier_utilisateur_commun(login, password):
    conn = get_connection()
    cursor = conn.cursor(dictionary=True)

    query = """
        SELECT NomUtilisateur FROM Commun.AccesUtilisateurs
        WHERE NomUtilisateur = %s
          AND MotDePasse = %s
          AND (DateExpiration IS NULL OR DateExpiration >= CURDATE())
    """
    cursor.execute(query, (login, password))
    user = cursor.fetchone()
    cursor.close()
    conn.close()
    return user  # None si non trouvée

def get_connection():
    return mysql.connector.connect(
        host=os.getenv("DB_HOST"),
        user=os.getenv("DB_USER"),
        password=os.getenv("DB_PASSWORD"),
        database=os.getenv("DB_NAME")
    )

def get_latest_chaufferie():
    conn = get_connection()
    cursor = conn.cursor(dictionary=True)
    query = """
        SELECT c1.Sonde, c1.Temperature, c1.Date, c1.Topic
        FROM Chaufferie c1
        INNER JOIN (
            SELECT Sonde, MAX(Date) AS MaxDate
            FROM Chaufferie
            GROUP BY Sonde
        ) c2 ON c1.Sonde = c2.Sonde AND c1.Date = c2.MaxDate
        ORDER BY c1.Topic, c1.Sonde
    """
    cursor.execute(query)
    data = cursor.fetchall()
    cursor.close()
    conn.close()
    return data

def get_history_by_sonde(sonde_name):
    conn = get_connection()
    cursor = conn.cursor(dictionary=True)
    query = """
        SELECT Date, Temperature
        FROM Chaufferie
        WHERE Sonde = %s AND Date >= NOW() - INTERVAL 1 DAY
        ORDER BY Date ASC
    """
    cursor.execute(query, (sonde_name,))
    data = cursor.fetchall()
    cursor.close()
    conn.close()
    return data