# Copyright 2019 Eficent Business and IT Consulting Services, S.L.
# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).

from odoo import _, api, fields, models
from odoo.exceptions import ValidationError


class AccountMoveBudgetLine(models.Model):
    _name = "account.move.budget.line"
    _description = "Account Move Budget Line"
    _order = "date desc, id desc"

    budget_id = fields.Many2one(
        comodel_name='account.move.budget',
        string="Budget",
        required=True,
        ondelete='cascade',
        index=True,
    )
    name = fields.Char(string="Label")
    debit = fields.Monetary(
        default=0.0,
        currency_field='company_currency_id',
    )
    credit = fields.Monetary(
        default=0.0,
        currency_field='company_currency_id'
    )
    balance = fields.Monetary(
        compute='_compute_store_balance',
        store=True,
        currency_field='company_currency_id',
        help="Technical field holding the debit - "
             "credit in order to open meaningful "
             "graph views from reports",
    )
    company_currency_id = fields.Many2one(
        'res.currency',
        related='company_id.currency_id',
        string="Company Currency",
        readonly=True,
        help='Utility field to express amount currency',
        store=True,
    )
    account_id = fields.Many2one(
        'account.account',
        string='Account',
        required=True,
        index=True,
        ondelete="cascade",
        domain=[('deprecated', '=', False)],
        default=lambda self: self._context.get('account_id', False),
    )
    date = fields.Date(
        string='Date',
        index=True,
        required=True,
    )
    analytic_account_id = fields.Many2one(
        'account.analytic.account',
        string='Analytic Account',
    )
    company_id = fields.Many2one(
        'res.company',
        related='account_id.company_id',
        string='Company',
        store=True,
        readonly=True,
    )
    partner_id = fields.Many2one(
        'res.partner',
        string='Partner',
        ondelete='restrict',
    )

    @api.depends('debit', 'credit')
    def _compute_store_balance(self):
        for line in self:
            line.balance = line.debit - line.credit

    @api.constrains('date')
    def _constraint_date(self):
        for rec in self:
            if rec.budget_id.date_from > rec.date or \
                    rec.budget_id.date_to < rec.date:
                raise ValidationError(_('The date must be within the '
                                        'budget period.'))