# -*- coding: utf8 -*-
from sqlalchemy import text
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import (
    scoped_session,
    sessionmaker,
)
from zope.sqlalchemy import (
    ZopeTransactionExtension, 
    mark_changed
)

from datetime import *
import transaction

def execute_query(request, query, params):
    """Execute query and mark session as changed"""
    request.dbsession.execute(query, params)
    mark_changed(request.dbsession)
    transaction.commit()

def get_member_by_mdp_oublie(request, lien):
    query = "SELECT * FROM members WHERE mdp_oublie=:lien;"
    results = request.dbsession.execute(query, {'lien':lien}).first()
    return results

def get_member_by_email(request, email):
    if email == '0':
        query = "SELECT * FROM members ORDER BY nom"
        results = request.dbsession.execute(query).fetchall()
    else:
        # lire le membres par son identifianr
        query = """SELECT * FROM members WHERE email=:email;"""
        results = request.dbsession.execute(query, {'email': email}).first()
    return results

def update_membre_mdp_oublie(request, login):
    import base64
    import uuid

    # get a UUID - URL safe, Base64
    r_uuid = base64.urlsafe_b64encode(uuid.uuid4().bytes)
    r_uuid = r_uuid.replace('=', '')
    query = "UPDATE members SET mdp_oublie=:r_uuid, mdp_oublie_date=now() WHERE email=:login;"
    execute_query(request, query, {'r_uuid':r_uuid, 'login':login})
    return r_uuid

def update_membre_mdp(request, login, password):
    """Update password for member login"""
    query = "UPDATE members SET mdp = SHA1(:password), mdp_oublie=NULL, mdp_oublie_date=NULL WHERE email=:login;"
    execute_query(request, query, {'login': login, 'password': password})

def update_last_connection(request, login):
    """Update last connection for login """
    query = "UPDATE members SET dern_cnx_le=NOW() WHERE email=:login;"
    execute_query(request, query, {'login': login})

def update_membre(request, email, new_values):
    # formater les champs
    s = ''
    for param in new_values.keys():
        if param == 'nom':
            new_values['nom'] = new_values['nom'].upper()
        if param == 'access':
            ' ne prend que le 1er caractère'
            new_values['access'] = new_values['access'][0]
            
        if s:
            s += ",%s=:%s" % (param, param)
        else:
            s = "%s=:%s" % (param, param)

    if email == '':
        query = "INSERT INTO members SET %s" % s
    else:
        new_values['email'] = email
        query = "UPDATE members SET %s WHERE email = :email;" % s
    execute_query(request, query, new_values)

def delete_membre(request, email):
    query = "DELETE FROM members WHERE email = :email ;"
    execute_query(request, query, {'email': email})