# -*- 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 dateutil.relativedelta
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_users_agenda(request):
    """ lire la liste des users ayant un agenda"""
    query = "SELECT * FROM p_users WHERE cd_uti != 'N' and agenda != 0 AND actif != 0 ORDER BY nom;"
    results = request.dbsession.execute(query).fetchall()
    return results

def get_rendez_vous(request, itc):
    d = datetime.now()
    d = d - dateutil.relativedelta.relativedelta(months=3)
    # début du mois M-2
    datedeb = d.strftime('%Y-%m-01')
    
    # lire les rdv de l'ITC 
    query = """SELECT CONCAT(l.societe,"-",l.no_id) as nodossier, l.nolig, l.rdv_debut, l.rdv_fin, e.c_nom, e.c_ville FROM dem_lig l 
    INNER JOIN dem_devis e ON l.societe=e.societe AND l.no_id=e.no_id
    WHERE l.datevi >= :datedeb AND l.liste=:itc ORDER BY l.datevi, l.heurevi
"""
    results = request.dbsession.execute(query, {'datedeb': datedeb, 'itc': itc}).fetchall()
    return results

def delete_rdv(request, nodossier, nolig):
    societe = nodossier[0:2]
    no_id = nodossier[3:]

    query = "DELETE FROM dem_lig where societe = '%s' and no_id=%s and nolig=%s;" % (societe, no_id, nolig)
    execute_query(request, query, {})

def update_rdv(request, nodossier, nolig, new_values):
    societe = nodossier[0:2]
    no_id = nodossier[3:]

    # formater date et heure de visite
    if new_values['rdv_debut']:
        ddate = datetime.strptime(new_values['rdv_debut'], '%d-%m-%Y %H:%M')
        new_values['DATEVI'] = ddate.strftime("%Y-%m-%d")
        new_values['HEUREVI'] = ddate.strftime("%H:%M")
    
    del new_values['rdv_debut']
    s = ''
    for param in new_values.keys():            
        if s:
            s += ",%s=:%s" % (param, param)
        else:
            s = "%s=:%s" % (param, param)

    new_values['societe'] = societe
    new_values['no_id'] = no_id
    new_values['nolig'] = nolig   
    query = "UPDATE dem_lig SET %s WHERE societe = :societe AND NO_ID = :no_id AND NOLIG = :nolig ;" % s
    execute_query(request, query, new_values)