trytonpsk-staff_payroll/payroll.py

# This file is part of Tryton.  The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
import datetime
from decimal import Decimal

from trytond.model import Workflow, ModelView, ModelSQL, fields
from trytond.pyson import Bool, Eval, If, Id
from trytond.pool import Pool, PoolMeta
from trytond.transaction import Transaction
from trytond.modules.company import CompanyReport
from trytond.wizard import Wizard, StateView, StateTransition, Button

__all__ = ['Payroll', 'PayrollLine', 'PayrollReport', 'Move',
        'PayrollGroupStart', 'PayrollGroup', 'PayrollPreliquidation',
        'PayrollRecompute']

STATES = {'readonly': (Eval('state') != 'draft')}

_DEFAULT_WORK_DAY = 8
_ZERO = Decimal('0.0')


class Payroll(Workflow, ModelSQL, ModelView):
    "Staff Payroll"
    __name__ = "staff.payroll"
    _rec_name = 'number'
    number = fields.Char('Number', readonly=True, help="Secuence",
            select=True)
    period = fields.Many2One('staff.payroll.period', 'Period',
            required=True, states={
                'readonly': Eval('state') != 'draft',
            })
    employee = fields.Many2One('company.employee', 'Employee',
            states=STATES, required=True, depends=['state'], select=True)
    kind = fields.Selection([
            ('normal', 'Normal'),
            ('special', 'Special'),
            ], 'Kind', required=True, select=True, states=STATES,
            help="Special allow overlap dates with another payroll")
    contract = fields.Many2One('staff.contract', 'Contract',
            select=True, domain=[
                ('employee', '=', Eval('employee')),
            ])
    start = fields.Date('Start', states=STATES, required=True)
    end = fields.Date('End', states=STATES, required=True)
    date_effective = fields.Date('Date Effective', states=STATES,
            required=True)
    description = fields.Char('Description', states=STATES, select=True)
    lines = fields.One2Many('staff.payroll.line', 'payroll', 'Wage Line',
            states=STATES, depends=['employee', 'state'])
    gross_payments = fields.Function(fields.Numeric('Gross Payments',
            digits=(16, 2), depends=['lines', 'states']), 'on_change_with_amount')
    total_deductions = fields.Function(fields.Numeric(
            'Total Deductions', digits=(16, 2), depends=['lines', 'states']),
            'on_change_with_amount')
    net_payment = fields.Function(fields.Numeric('Net Payment',
            digits=(16, 2), depends=['lines', 'states']),
            'get_net_payment')
    total_cost = fields.Function(fields.Numeric('Total Cost',
            digits=(16, 2), depends=['lines', 'states']),
            'get_total_cost')
    currency = fields.Many2One('currency.currency', 'Currency',
        required=False,
            states={
                'readonly': ((Eval('state') != 'draft')
                    | (Eval('lines', [0]) & Eval('currency'))),
                }, depends=['state'])
    worked_days = fields.Function(fields.Integer('Worked Days',
            depends=['start', 'end', 'state']),
            'on_change_with_worked_days')
    state = fields.Selection([
            ('draft', 'Draft'),
            ('processed', 'Processed'),
            ('cancel', 'Cancel'),
            ('posted', 'Posted'),
            ], 'State', readonly=True)
    journal = fields.Many2One('account.journal', 'Journal', required=True,
            states=STATES)
    company = fields.Many2One('company.company', 'Company', required=True,
        states={
            'readonly': (Eval('state') != 'draft') | Eval('lines', [0]),
            },
        domain=[
            ('id', If(Eval('context', {}).contains('company'), '=', '!='),
                Eval('context', {}).get('company', 0)),
            ],
        depends=['state'])
    move = fields.Many2One('account.move', 'Move', readonly=True)
    origin = fields.Reference('Origin', selection='get_origin',
            select=True, depends=['state'],
            states={
                'readonly': Eval('state') != 'draft',
            })
    notes = fields.Text("Notes", states=STATES)

    @classmethod
    def __setup__(cls):
        super(Payroll, cls).__setup__()
        cls._order = [
            ('period', 'DESC'),
            ('start', 'DESC'),
        ]
        cls._error_messages.update({
            'employee_without_salary': ('The employee does not have salary!'),
            'wrong_start_end': ('The date end can not smaller than date start, for employee %s'),
            'sequence_missing': ('Sequence Payroll is missing!'),
            'period_closed': ('Payroll period is closed!'),
            'payroll_exist_period': ('Already exist one payroll in this period with this contract!'),
            'wrong_date_consistent': ('The date start/end is repetead \
                        or crossed with other date payroll'),
            'delete_cancel': ('Payroll "%s" must be cancelled before '
                'deletion.'),
            'existing_move': ('Payroll "%s" has a move, must be deleted '
                'before deletion.'),
            'bad_configuration_wage_type': ('Bad configuration of the wage type "%s".'),
        })
        cls._transitions |= set((
                ('draft', 'cancel'),
                ('cancel', 'draft'),
                ('draft', 'processed'),
                ('processed', 'posted'),
                ('posted', 'draft'),
                ('processed', 'draft'),
                ))
        cls._buttons.update({
                'draft': {
                    'invisible': Eval('state') == 'draft',
                    },
                'post': {
                    'invisible': Eval('state') != 'processed',
                    },
                'cancel': {
                    'invisible': Eval('state') != 'draft',
                    },
                'process': {
                    'invisible': Eval('state') != 'draft',
                    },
                })

    @staticmethod
    def default_company():
        return Transaction().context.get('company')

    @staticmethod
    def default_kind():
        return 'normal'

    @staticmethod
    def default_journal():
        Configuration = Pool().get('staff.configuration')
        configuration = Configuration(1)
        if configuration.default_journal:
            return configuration.default_journal.id

    @staticmethod
    def default_currency():
        Company = Pool().get('company.company')
        if Transaction().context.get('company'):
            company = Company(Transaction().context['company'])
            return company.currency.id

    @classmethod
    def delete(cls, records):
        # Cancel before delete
        cls.cancel(records)
        for payroll in records:
            if payroll.state != 'cancel':
                cls.raise_user_error('delete_cancel', (payroll.rec_name,))
            if payroll.move:
                cls.raise_user_error('existing_move', (payroll.rec_name,))
        super(Payroll, cls).delete(records)

    @classmethod
    def validate(cls, payrolls):
        super(Payroll, cls).validate(payrolls)
        for payroll in payrolls:
            payroll.check_start_end()

    @staticmethod
    def default_state():
        return 'draft'

    @staticmethod
    def _get_origin():
        'Return list of Model names for origin Reference'
        return []

    @classmethod
    def search_rec_name(cls, name, clause):
        if clause[1].startswith('!') or clause[1].startswith('not '):
            bool_op = 'AND'
        else:
            bool_op = 'OR'
        return [bool_op,
            ('employee',) + tuple(clause[1:]),
            ('number',) + tuple(clause[1:]),
            ]

    @classmethod
    @ModelView.button
    @Workflow.transition('draft')
    def draft(cls, records):
        pass

    @classmethod
    @ModelView.button
    @Workflow.transition('cancel')
    def cancel(cls, records):
        pass

    @classmethod
    @ModelView.button
    @Workflow.transition('processed')
    def process(cls, records):
        Payroll = Pool().get('staff.payroll')
        for payroll in records:
            payrolls = Payroll.search([
                ('period', '=', payroll.period.id),
                ('contract', '=', payroll.contract.id),
            ])
            if len(payrolls) > 1:
                cls.raise_user_error('payroll_exist_period',)
                return
            if payroll.period.state == 'closed':
                cls.raise_user_error('period_closed',)
                return
            payroll.set_number()

    @classmethod
    @ModelView.button
    @Workflow.transition('posted')
    def post(cls, records):
        for payroll in records:
            payroll.create_move()

    @fields.depends('start', 'end')
    def on_change_start(self):
        if not self.start:
            return
        Configuration = Pool().get('staff.configuration')
        configuration = Configuration(1)
        period_days = configuration.default_liquidation_period
        if period_days and not self.end:
            self.end = self.start + datetime.timedelta(period_days - 1)

    @classmethod
    def get_origin(cls):
        Model = Pool().get('ir.model')
        models = cls._get_origin()
        models = Model.search([
                ('model', 'in', models),
        ])
        return [(None, '')] + [(m.model, m.name) for m in models]

    def set_number(self):
        if self.number:
            return
        pool = Pool()
        Sequence = pool.get('ir.sequence')
        Configuration = pool.get('staff.configuration')
        configuration = Configuration(1)
        if not configuration.staff_payroll_sequence:
            self.raise_user_error('sequence_missing',)
        seq = configuration.staff_payroll_sequence.id
        self.write([self], {'number': Sequence.get_id(seq)})

    @fields.depends('start', 'end')
    def on_change_with_worked_days(self, name=None):
        if self.start and self.end and self.employee:
            return self.get_days(self.start, self.end)

    def get_salary_full(self, wage):
        """
        Return a dict with sum of total amount of all wages defined
            as salary on context of wage
        """
        salary_full = self.compute_salary_full(wage)
        return {'salary': salary_full}

    def compute_salary_full(self, wage):
        wages_ids = [s.id for s in wage.concepts_salary]
        wages_names = [s.name for s in wage.concepts_salary]
        if wage.amount_required:
            salary_full = self.employee.get_defect_amount_wage_type(wage.id)
        elif wages_ids:
            salary_full = sum([line.amount for line in self.lines
                if line.wage_type.id in wages_ids])
        else:
            salary_full = self.employee.salary or 0
        return salary_full

    def create_move(self):
        pool = Pool()
        Move = pool.get('account.move')
        Period = pool.get('account.period')
        if self.move:
            return
        period_id = Period.find(self.company.id, date=self.date_effective)
        move_lines = self.get_moves_lines()
        move, = Move.create([{
                'journal': self.journal.id,
                'origin': str(self),
                'period': period_id,
                'date': self.date_effective,
                'state': 'draft',
                'description': self.description,
                'lines': [('create', move_lines)],
        }])
        self.write([self], {'move': move.id})
        Move.post([self.move])

    def get_moves_lines(self):
        lines_moves = {}
        mandatory_wages = dict([(m.wage_type.id, m.party)
                for m in self.employee.mandatory_wages
        ])

        for line in self.lines:
            if line.amount <= 0:
                continue
            if line.party:
                party = line.party
            else:
                if mandatory_wages.get(line.wage_type.id):
                    party = mandatory_wages[line.wage_type.id]
                else:
                    party = self.employee.party


            expense = Decimal(0)
            if not line.wage_type:
                continue
            if line.wage_type.expense_formula:
                expense = line.get_expense_amount()

            if line.wage_type.definition == 'payment':
                amount_debit = line.amount + expense
            else:
                if expense:
                    amount_debit = expense
                elif line.wage_type.debit_account:
                    amount_debit = line.amount

            amount_credit = line.amount + expense
            debit_acc = line.wage_type.debit_account

            try:
                if debit_acc and amount_debit > _ZERO:
                    if line.wage_type.definition == 'discount':
                        amount_debit = amount_debit * (-1)
                    if debit_acc.id not in lines_moves.keys():
                        lines_moves[debit_acc.id] = {
                            self.employee.party.id: line.get_move_line(
                                debit_acc, self.employee.party, ('debit', amount_debit)
                        )}
                    else:
                        line.update_move_line(
                            lines_moves[debit_acc.id][self.employee.party.id],
                            {'debit': amount_debit, 'credit': _ZERO}
                        )

                credit_acc = line.wage_type.credit_account
                if amount_credit > _ZERO:
                    line_credit_ready = False
                    if credit_acc:
                        if credit_acc.id not in lines_moves.keys():
                            lines_moves[credit_acc.id] = {
                                    party.id: line.get_move_line(
                                        credit_acc, party, ('credit', amount_credit)
                            )}
                            line_credit_ready = True
                        else:
                            if party.id not in lines_moves[credit_acc.id].keys():
                                lines_moves[credit_acc.id].update({
                                        party.id: line.get_move_line(
                                            credit_acc, party, ('credit', amount_credit)
                                )})
                                line_credit_ready = True
                    if line.wage_type.definition != 'payment':
                        deduction_acc = line.wage_type.deduction_account
                        if deduction_acc:
                            if deduction_acc.id not in lines_moves.keys():
                                lines_moves[deduction_acc.id] = {
                                    self.employee.party.id: line.get_move_line(
                                        deduction_acc, self.employee.party, ('credit', -line.amount),
                                )}
                                line_credit_ready = True
                            else:
                                lines_moves[deduction_acc.id][self.employee.party.id]['credit'] -= line.amount

                    if credit_acc and not line_credit_ready:
                        lines_moves[credit_acc.id][party.id]['credit'] += amount_credit
            except:
                self.raise_user_error('bad_configuration_wage_type', line.wage_type.name)

        result = []
        for r in lines_moves.values():
            _line  = r.values()
            if _line[0]['debit'] > 0 and _line[0]['credit'] > 0:
                new_value = _line[0]['debit'] - _line[0]['credit']
                if new_value >= 0:
                    _line[0]['debit'] = new_value
                    _line[0]['credit'] = 0
                else:
                    _line[0]['credit'] = new_value
                    _line[0]['debit'] = 0
            result.extend(_line)
        return result

    def _create_payroll_lines(self, wages, extras, discounts=None):
        PayrollLine = Pool().get('staff.payroll.line')
        config = Pool().get('staff.configuration')(1)
        values = []
        salary_args = {}
        salary_in_date = self.contract.get_salary_in_date(
            self.end)
        for wage, party in wages:
            if wage.salary_constitute:
                if wage.amount_required:
                    salary_args = self.get_salary_full(wage)
                else:
                    salary_args['salary'] = salary_in_date
            else:
                salary_args = self.get_salary_full(wage)

            if config and config.minimum_salary and wage.type_concept == 'transport' and \
                salary_in_date >= (config.minimum_salary * 2):
                unit_value = 0
            else:
                unit_value = wage.compute_unit_price(salary_args)

            discount = None
            if discounts.get(wage.id):
                discount = discounts.get(wage.id)
            qty = self.get_line_quantity_special(wage)
            if qty == 0:
                qty = self.get_line_quantity(wage, self.start, self.end,
                    extras, discount)
            values.append(self.get_line(wage, qty, unit_value, party))

        PayrollLine.create(values)

    def set_preliquidation(self, extras, discounts=None):
        wage_salary = []
        wage_no_salary = []

        for concept in self.employee.mandatory_wages:
            if concept.wage_type.salary_constitute:
                wage_salary.append((concept.wage_type, concept.party))
            else:
                wage_no_salary.append((concept.wage_type, concept.party))

        self._create_payroll_lines(wage_salary, extras, discounts)
        self._create_payroll_lines(wage_no_salary, extras, discounts)

    def update_preliquidation(self, extras):
        for line in self.lines:
            if not line.wage_type.salary_constitute:
                salary_args = self.get_salary_full(line.wage_type)
                unit_value = line.wage_type.compute_unit_price(salary_args)
                line.write([line], {
                    'unit_value': unit_value,
                })

    def get_line(self, wage, qty, unit_value, party=None):
        res = {
                'sequence': wage.sequence,
                'payroll': self.id,
                'wage_type': wage.id,
                'description': wage.name,
                'quantity': qty,
                'unit_value': unit_value,
                'uom': wage.uom,
                'receipt': wage.receipt,
        }
        if party:
            res['party'] = party.id
        return res

    def _get_line_quantity(self, quantity_days, wage, extras, discount):
        Configuration = Pool().get('staff.configuration')
        configuration = Configuration(1)
        default_hour_workday = configuration.default_hour_workday or _DEFAULT_WORK_DAY
        quantity = wage.default_quantity or 0
        if quantity_days < 0:
            quantity_days = 0
        if wage.uom.id == Id('product', 'uom_day').pyson():
            quantity = quantity_days
            if discount:
                quantity -= discount
        elif wage.uom.id == Id('product', 'uom_hour').pyson():
            if wage.type_concept != 'extras':
                quantity = quantity_days * default_hour_workday
                if discount:
                    quantity -= discount
            else:
                key_ = [key for key in extras.keys() if wage.name.lower().count(key)  > 0]
                if key_:
                    key_ext = key_[0]
                    extras_ = extras.get(key_ext)
                else:
                    extras_ = extras.get((wage.name.lower()))
                if extras_ and self.employee.position and self.employee.position.extras:
                    quantity = extras_
        return quantity

    def get_line_quantity(self, wage, start=None, end=None, extras=None, discount=None):
        quantity = wage.default_quantity or 0
        quantity_days = self.get_days(start, end)
        quantity = self._get_line_quantity(quantity_days, wage, extras, discount)
        return quantity

    def get_line_quantity_special(self, wage):
        quantity_days = 0
        if self.contract and self.date_effective and wage.type_concept == 'special':
            quantity_days = (self.date_effective - self.contract.start_date).days
            if quantity_days > wage.limit_days:
                quantity_days = wage.limit_days
        return quantity_days

    @fields.depends('lines')
    def on_change_with_amount(self, name=None):
        res = []
        for line in self.lines:
            if not line.amount:
                continue
            if name == 'gross_payments':
                if line.wage_type.definition == 'payment' and line.receipt:
                    res.append(line.amount)
            else:
                if line.wage_type.definition != 'payment':
                    res.append(line.amount)
        res = self.currency.round(sum(res))
        return res

    def get_net_payment(self, name=None):
        return (self.gross_payments - self.total_deductions)

    def get_total_cost(self, name):
        res = sum([line.amount for line in self.lines
                if line.wage_type.definition == 'payment'])
        return res

    def check_start_end(self):
        if self.start <= self.end:
            if self.kind != 'normal':
                return
            if self.start >= self.period.start and \
                    self.end <= self.period.end:
                return
            if self.start >= self.period.start and \
                    self.end == None:
                return
        self.raise_user_error('wrong_start_end', self.employee.party.name)

    @fields.depends('period', 'start', 'end', 'employee')
    def on_change_period(self):
        self.start = None
        self.end = None
        self.contract = None
        self.description = None
        if self.period:
            self.start = self.period.start
            self.end = self.period.end
            self.contract = self.search_contract_on_period(
                self.employee, self.period
            )
            if not self.description:
                self.description = self.period.description

    @classmethod
    def search_contract_on_period(cls, employee, period):
        Contract = Pool().get('staff.contract')
        contracts = Contract.search([
            ('employee', '=', employee.id), ['AND',
            ['OR', [
                    ('start_date', '>=', period.start),
                    ('end_date', '<=', period.end),
                    ('end_date', '!=', None),
                ], [
                    ('start_date', '<=', period.start),
                    ('end_date', '>=', period.start),
                    ('end_date', '!=', None),
                ], [
                    ('start_date', '<=', period.end),
                    ('end_date', '>=', period.end),
                    ('end_date', '!=', None),
                ], [
                    ('start_date', '<=', period.start),
                    ('end_date', '>=', period.end),
                    ('end_date', '!=', None),
                ], [
                    ('start_date', '<=', period.start),
                    ('end_date', '=', None),
                ],
                [
                    ('start_date', '>=', period.start),
                    ('start_date', '<=', period.end),
                    ('end_date', '=', None),
                ],
            ]]
        ])
        if not contracts:
            last_date_futhermore = employee.get_last_date_futhermore()
            if last_date_futhermore and last_date_futhermore > period.start:
                return employee.contract
            return
        values = dict([(c.end_date, c) for c in contracts])

        last_contract = values[max(values.keys())]

        if last_contract.end_date:
            if (last_contract.end_date >= period.start and
                last_contract.end_date <= period.end) or \
                (last_contract.end_date >= period.end and
                last_contract.end_date >= period.start):
                return last_contract
        else:
            return last_contract


    def get_days(self, start, end):
        adjust = 1
        quantity_days = (end - start).days + adjust
        if quantity_days < 0:
            quantity_days = 0
        return quantity_days

    def recompute_lines(self):
        for line in self.lines:
            if not line.wage_type.concepts_salary:
                continue
            salary_args = self.get_salary_full(line.wage_type)
            unit_value = line.wage_type.compute_unit_price(salary_args)
            line.write([line], {'unit_value': unit_value})


class PayrollLine(ModelSQL, ModelView):
    "Payroll Line"
    __name__ = "staff.payroll.line"
    sequence = fields.Integer('Sequence')
    payroll = fields.Many2One('staff.payroll', 'Payroll',
            ondelete='CASCADE', select=True, required=True)
    description = fields.Char('Description', required=True)
    wage_type = fields.Many2One('staff.wage_type', 'Wage Type',
            required=True, depends=['payroll'])
    uom = fields.Many2One('product.uom', 'Unit', depends=['wage_type'],
            states={'readonly': Bool(Eval('wage_type'))})
    quantity = fields.Numeric('Quantity', digits=(16, 2))
    unit_value = fields.Numeric('Unit Value', digits=(16, 2),
            depends=['wage_type'])
    amount = fields.Function(fields.Numeric('Amount',
            digits=(16, 2), depends=['unit_value', 'quantity'],
            states={
                'readonly': ~Eval('_parent_payroll'),
                }), 'get_amount')
    receipt = fields.Boolean('Print Receipt')
    reconciled = fields.Function(fields.Boolean('Reconciled'),
            'get_reconciled')
    party = fields.Many2One('party.party', 'Party', depends=['wage_type'])

    @classmethod
    def __setup__(cls):
        super(PayrollLine, cls).__setup__()
        cls._order.insert(0, ('sequence', 'ASC'))

    @staticmethod
    def default_quantity():
        return Decimal(str(1))

    @fields.depends('wage_type', 'uom', 'quantity', 'party',
        'description', 'unit_value', 'payroll', 'receipt', 'sequence',
        '_parent_payroll.employee')
    def on_change_wage_type(self):
        if not self.wage_type:
            return
        self.uom = self.wage_type.uom.id
        self.description = self.wage_type.name
        self.quantity = self.wage_type.default_quantity
        self.receipt = self.wage_type.receipt
        self.sequence = self.wage_type.sequence
        parties = []
        for wage in self.payroll.employee.mandatory_wages:
            if wage.wage_type.id == self.wage_type.id and wage.party:
                parties.append(wage.party.id)
            if parties:
                self.party = parties[0]

        if self.wage_type.unit_price_formula:
            salary_args = self.payroll.get_salary_full(self.wage_type)
            self.unit_value = self.wage_type.compute_unit_price(
                    salary_args)

    def get_amount(self, name):
        return self.on_change_with_amount()

    @fields.depends('quantity', 'unit_value', '_parent_payroll.currency')
    def on_change_with_amount(self):
        quantity = 0
        unit_value = 0
        res = _ZERO
        if self.quantity and self.unit_value:
            quantity = float(self.quantity)
            unit_value = float(self.unit_value)
            res = Decimal(str(round((quantity * unit_value), 2)))
        return res

    def get_reconciled(self, name=None):
        #TODO: Reconciled must be computed from move line, similar way
        # to account invoice
        pass

    def get_move_line(self, account, party, amount):
        debit = credit = _ZERO
        if amount[0] == 'debit':
            debit = amount[1]
        else:
            credit = amount[1]

        res = {
            'description': account.name,
            'debit': debit,
            'credit': credit,
            'account': account.id,
            'party': party.id,
        }
        return res

    def update_move_line(self, move_line, values):
        if values['debit']:
            move_line['debit'] += values['debit']

        if values['credit']:
            move_line['credit'] += values['credit']
        return move_line

    def get_expense_amount(self):
        expense = 0
        if self.wage_type.expense_formula:
            salary_args = self.payroll.get_salary_full(self.wage_type)
            expense = self.wage_type.compute_expense(salary_args)
        return expense


class PayrollReport(CompanyReport):
    __name__ = 'staff.payroll'

    @classmethod
    def get_context(cls, records, data):
        report_context = super(PayrollReport, cls).get_context(records, data)
        return report_context


class PayrollGroupStart(ModelView):
    'Payroll Group Start'
    __name__ = 'staff.payroll_group.start'
    period = fields.Many2One('staff.payroll.period', 'Period',
        required=True, domain=[('state', '=', 'open')])
    description = fields.Char('Description', required=True)
    company = fields.Many2One('company.company', 'Company',
        required=True)
    wage_types = fields.Many2Many('staff.wage_type', None, None,
            'Wage Types')

    @staticmethod
    def default_company():
        return Transaction().context.get('company')

    @fields.depends('period', 'description')
    def on_change_period(self):
        if not self.period:
            return
        if not self.description and self.period.description:
            self.description = self.period.description


class PayrollGroup(Wizard):
    'Payroll Group'
    __name__ = 'staff.payroll_group'
    start = StateView('staff.payroll_group.start',
        'staff_payroll.payroll_group_start_view_form', [
            Button('Cancel', 'end', 'tryton-cancel'),
            Button('Accept', 'open_', 'tryton-ok', default=True),
            ])
    open_ = StateTransition()

    def transition_open_(self):
        pool = Pool()
        Employee = pool.get('company.employee')
        Payroll = pool.get('staff.payroll')
        Contract = pool.get('staff.contract')

        #Remove employees with payroll this period
        payrolls_period = Payroll.search([
            ('period', '=', self.start.period.id),
        ])
        employees_w_payroll = [p.employee.id for p in payrolls_period]

        dom_employees = self.get_employees_dom(employees_w_payroll)
        payroll_to_create = []

        for employee in Employee.search(dom_employees):
            if not employee.contract:
                continue

            start = self.start.period.start
            end = self.start.period.end
            contract = Payroll.search_contract_on_period(employee, self.start.period)
            if not contract:
                continue

            values = self.get_values(employee, start, end)
            payroll_to_create.append(values)

        wages = [(wage_type, None) for wage_type in self.start.wage_types]
        if payroll_to_create:
            payrolls = Payroll.create(payroll_to_create)
            cont = 0
            for payroll in payrolls:
                cont += 1
                print(cont)
                payroll.on_change_period()
                payroll.set_preliquidation({})
                if wages:
                    payroll._create_payroll_lines(wages, None, {})
        return 'end'

    def get_employees_dom(self, employees_w_payroll):
        dom_employees = [
                    ('active', '=', True),
                    ('id', 'not in', employees_w_payroll),
                ]
        return dom_employees

    def get_values(self, employee, start_date, end_date):
        Payroll = Pool().get('staff.payroll')
        if employee.contract.start_date and \
            employee.contract.start_date >= start_date and \
            employee.contract.start_date <= start_date:
            start_date = employee.contract.start_date
        if employee.contract.end_date and \
            employee.contract.end_date >= start_date and \
            employee.contract.end_date <= end_date:
            end_date = employee.contract.end_date
        values = {
            'employee': employee.id,
            'period': self.start.period.id,
            'start': start_date,
            'end': end_date,
            'description': self.start.description,
            'date_effective': end_date,
            'contract': Payroll.search_contract_on_period(
                    employee, self.start.period
                    )
        }
        return values


class PayrollPreliquidation(Wizard):
    'Payroll Preliquidation'
    __name__ = 'staff.payroll.preliquidation'
    start_state = 'create_preliquidation'
    create_preliquidation = StateTransition()

    def transition_create_preliquidation(self):
        Payroll = Pool().get('staff.payroll')
        ids = Transaction().context['active_ids']
        for payroll in Payroll.browse(ids):
            if payroll.state != 'draft':
                return
            if not payroll.lines:
                payroll.set_preliquidation({})
            else:
                payroll.update_preliquidation({})
        return 'end'


class PayrollRecompute(Wizard):
    'Payroll Recompute'
    __name__ = 'staff.payroll.recompute'
    start_state = 'do_recompute'
    do_recompute = StateTransition()

    def transition_do_recompute(self):
        Payroll = Pool().get('staff.payroll')
        ids = Transaction().context['active_ids']
        for payroll in Payroll.browse(ids):
            if payroll.state != 'draft' or not payroll.lines:
                continue
            payroll.recompute_lines()
        return 'end'


class Move:
    __metaclass__ = PoolMeta
    __name__ = 'account.move'

    @classmethod
    def _get_origin(cls):
        return super(Move, cls)._get_origin() + ['staff.payroll']