~moldeo-openerp-addons/openerp-hr-clock-reader/trunk

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# -*- encoding: utf-8 -*-
##############################################################################
#
#    Clock Reader for OpenERP
#    Copyright (C) 2004-2009 Moldeo Interactive CT
#    (<http://www.moldeointeractive.com.ar>). All Rights Reserved
#    $Id$
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################

from .. import timeutils as tu
import netsvc
import pooler

_negative_action = {
    'sign_in': 'sign_out',
    'sign_out': 'sign_in',
}

class MultipleAssignedCardError:
    def __init__(self, empl_id, card_id):
        self.empl_id = empl_id
        self.card_id = card_id

    def __str__(self):
        return 'Employees with ids %s have the same card id: %i' % \
                (repr(self.empl_id), self.card_id)

class NotAssignedCardError:
    def __init__(self, card_id):
        self.card_id = card_id

    def __str__(self):
        return 'Card [%i] is not assigned.' % self.card_id

class AttendanceCreator:
    logger = netsvc.Logger()

    OK = -1
    IGNORED = 0
    ERROR = 1

    def __init__(self, cr, uid, context=None):
        self.emp_id_ok = {}
        self.emp_id_err = {}
        self.emp_id_notexists = []
        self.err = []
        self.c = 0

        self.cr = cr
        self.uid = uid
        self.context = context
        self.pool = pooler.get_pool(cr.dbname)
        self.emp_pool = self.pool.get('hr.employee')
        self.att_pool = self.pool.get('hr.attendance')

    def employee_id(self, card_id):
        emp_ids = self.emp_pool.search(self.cr, self.uid,
                                       [('clock_login_id', '=', card_id)],
                                       context=self.context)
        if len(emp_ids) > 1:
            raise MultipleAssignedCardError(emp_ids, card_id)
        elif len(emp_ids) == 0:
            raise NotAssignedCardError(card_id)

        return emp_ids[0]

    def exists_attendance(self, empl_id, dt, action):
        assert isinstance(dt, tu.datetime)
        att_ids = self.att_pool.search(self.cr, self.uid,
                                 [('employee_id', '=', empl_id),
                                  ('name', '=', tu.dt2s(dt))],
                                       context=self.context)
        return len(att_ids) > 0

    def create_employee(self, card_id):
        self.emp_pool.create(self.cr, self.uid, {
            'name': 'Unknown Employee with card id %i' % card_id,
            'otherid': card_id,
        })
        return self.employee_id(card_id)

    def previous_action(self, empl_id, dt, action=False):
        assert isinstance(dt, tu.datetime)
        if action:
            sql_action = "AND action = '%s'" % action
        else:
            sql_action = ""
        sql = """
SELECT employee_id, name, action
FROM hr_attendance
WHERE
name::timestamp < '%s'::timestamp AND
   employee_id = '%s'
   %s
ORDER BY name desc
""" % (tu.dt2s(dt), empl_id, sql_action)
        self.cr.execute(sql)
        r = self.cr.dictfetchall()
        if len(r)>0:
            return (empl_id, tu.dt(r[0]['name']), r[0]['action'])
        else:
            return False

    def next_action(self, empl_id, dt, action=False):
        assert isinstance(dt, tu.datetime)
        if action:
            sql_action = "AND action = '%s'" % action
        else:
            sql_action = ""
        sql = """
SELECT employee_id, name as name, action
FROM hr_attendance
WHERE
   name::timestamp > '%s'::timestamp AND
   employee_id = '%s'
   %s
ORDER BY name asc
""" % (tu.dt2s(dt), empl_id, sql_action)
        self.cr.execute(sql)
        r = self.cr.dictfetchall()
        if len(r)>0:
            return (empl_id, tu.dt(r[0]['name']), r[0]['action'])
        else:
            return False

    def create_attendance(self, empl_id, dt, action, method, tolerance=60*5,
                          complete_attendance=False, forgot_action=False,
                          ignore_restrictions=False):
        assert isinstance(dt, tu.datetime)

        self.logger.notifyChannel('wizard.hr_clock_reader', netsvc.LOG_DEBUG,
                               'create_attendance: CREATE: %s, %s, %s, %i'%
                                  (tu.dt2s(dt), action, method, empl_id))
        
        r = self.previous_action(empl_id, dt)

        # Equal attendance
        if r and r[1] + tu.timedelta(seconds=tolerance) > dt:
                self.logger.notifyChannel('wizard.hr_clock_reader', netsvc.LOG_INFO,
                   'create_attendance: IGNORED: multiply registries in equivalent time')
                return AttendanceCreator.IGNORED

        # Equal accion
        if not ignore_restrictions:
            if r and r[2] == action:
                # Employee forgot sign
                if complete_attendance:
                    self.logger.notifyChannel('wizard.hr_clock_reader', netsvc.LOG_DEBUG,
                       'create_attendance: equal previus action %s %s %i' %
                                              (tu.dt2s(r[1]), r[2], r[0]))
                    r = self.create_attendance(empl_id,
                                           r[1] + (dt - r[1])/2,
                                           _negative_action[action], 'automatic',
                                           tolerance=tolerance)
                    if r != AttendanceCreator.OK:
                        return r
                elif forgot_action:
                    action = _negative_action[action]
                else:
                    return AttendanceCreator.ERROR
            # Sign out without sign in 
            elif not r and action == 'sign_out':
                self.logger.notifyChannel('wizard.hr_clock_reader', netsvc.LOG_INFO,
                   'create_attendance: IGNORED: ignore sign-out without sign-in')
                return AttendanceCreator.IGNORED
            # Bad inserting attendance
            elif not r and self.next_action(empl_id, dt):
                self.logger.notifyChannel('wizard.hr_clock_reader', netsvc.LOG_INFO,
                   'create_attendance: IGNORED: clock try to insert an older attendance')
                return AttendanceCreator.IGNORED

        self.att_pool.create(self.cr, self.uid, {
            'name': tu.dt2s(dt),
            'action': action,
            'method': method,
            'employee_id': empl_id
        })

        self.logger.notifyChannel('wizard.hr_clock_reader', netsvc.LOG_DEBUG,
                               'create_attendance: DONE: %s, %s, %s, %i'%
                                  (tu.dt2s(dt), action, method, empl_id))
        return AttendanceCreator.OK

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