# This file is part of Tryton.  The COPYRIGHT file at the top level of
# this repository contains the full copyright notices and license terms.
from trytond import backend
from trytond.model import fields
from trytond.pool import PoolMeta, Pool
from trytond.pyson import Eval, Id
from trytond.tools.multivalue import migrate_property


def default_func(field_name):
    @classmethod
    def default(cls, **pattern):
        return getattr(
            cls.multivalue_model(field_name),
            'default_%s' % field_name, lambda: None)()
    return default


class StaffConfiguration(metaclass=PoolMeta):
    __name__ = 'staff.configuration'
    staff_payroll_sequence = fields.MultiValue(fields.Many2One('ir.sequence',
        'Payroll Sequence', required=True, domain=[
                ('sequence_type', '=',
                    Id('staff_payroll', 'sequence_type_payroll'))])
        )
    default_hour_workday = fields.Numeric('Default Hour Workday',
            required=True, help='In hours', digits=(5,4))
    default_restday = fields.Integer('Default Restday', required=True,
            help='In hours')
    default_liquidation_period = fields.Integer('Default Liquidation Period',
            required=True, help='In days')
    week_hours_work = fields.Integer('Week Hours Work', required=True,
            help='In hours')
    default_journal = fields.Many2One('account.journal', 'Default Journal',
            required=True)

    default_staff_payroll_sequence = default_func('staff_payroll_sequence')
    expense_contribution_entity = fields.Boolean('Expense Contribution Entity')
    minimum_salary = fields.Integer('Minimum Salary', required=True)

    @classmethod
    def multivalue_model(cls, field):
        pool = Pool()
        if field in ['staff_payroll_sequence', 'staff_contract_sequence']:
            return pool.get('staff.configuration.sequence')
        return super(StaffConfiguration, cls).multivalue_model(field)

    @classmethod
    def __register__(cls, module_name):
        super().__register__(module_name)

        table = cls.__table_handler__(module_name)

        # Migration from > 6.0.8: change type column
        if table.column_is_type('default_hour_workday', 'int4'):
            table.alter_type('default_hour_workday', 'numeric')


class StaffConfigurationSequence(metaclass=PoolMeta):
    __name__ = 'staff.configuration.sequence'
    staff_payroll_sequence = fields.Many2One(
        'ir.sequence', "Staff Payroll Sequence", required=True,
        domain=[
            ('company', 'in', [Eval('company', -1), None]),
            ('sequence_type', '=', Id('staff_payroll', 'sequence_type_payroll')),
            ],
        depends=['company'])

    @classmethod
    def __register__(cls, module_name):
        exist = backend.TableHandler.table_exist(cls._table)
        super(StaffConfigurationSequence, cls).__register__(module_name)

        if not exist:
            cls._migrate_property([], [], [])

    @classmethod
    def _migrate_property(cls, field_names, value_names, fields):
        field_names.append('staff_payroll_sequence')
        value_names.append('staff_payroll_sequence')
        fields.append('company')
        migrate_property(
            'staff.configuration', field_names, cls, value_names,
            fields=fields)

    @classmethod
    def default_staff_payroll_sequence(cls):
        pool = Pool()
        ModelData = pool.get('ir.model.data')
        try:
            return ModelData.get_id('staff', 'sequence_staff_payroll')
        except KeyError:
            return None