from odoo import fields, models


class EncoachDiscount(models.Model):
    _name = "encoach.discount"
    _description = "EnCoach Discount Code"
    code = fields.Char(required=True, index=True)

    _code_unique = models.Constraint(
        "UNIQUE(code)",
        "Discount code must be unique.",
    )
    percentage = fields.Float(digits=(5, 2))
    expiry_date = fields.Datetime()
    max_uses = fields.Integer()
    uses = fields.Integer(default=0)

    def is_valid(self):
        self.ensure_one()
        if self.max_uses and self.uses >= self.max_uses:
            return False
        if self.expiry_date and self.expiry_date < fields.Datetime.now():
            return False
        return True