from odoo import models, fields, api
from .. import random_tokens


class Client(models.Model):
    _name = "galicea_openid_connect.client"
    _description = "OpenID Connect client"

    name = fields.Char(required=True)
    auth_redirect_uri = fields.Char("Redirect URI for user login")
    client_id = fields.Char(
        string="Client ID",
        required=True,
        readonly=True,
        index=True,
        default=lambda _: random_tokens.lower_case(16),
    )
    secret = fields.Char(
        string="Client secret",
        required=True,
        readonly=True,
        default=lambda _: random_tokens.alpha_numeric(32),
        groups="galicea_openid_connect.group_admin",
    )
    system_user_id = fields.Many2one(
        "res.users",
        "Artificial user representing the client in client credentials requests",
        readonly=True,
        required=True,
        ondelete="restrict",
    )
    allow_password_grant = fields.Boolean(
        string="Allow OAuth2 password grant", default=False,
    )

    @api.model
    def __system_user_name(self, client_name):
        return "{} - API system user".format(client_name)

    @api.model
    def create(self, values):
        if "name" in values:
            system_user = self.env["res.users"].create(
                {
                    "name": self.__system_user_name(values["name"]),
                    "login": random_tokens.lower_case(8),
                    "groups_id": [
                        (4, self.env.ref("galicea_openid_connect.group_system_user").id)
                    ],
                }
            )
            # Do not include in the "Pending invitations" list
            system_user.with_user(system_user.id)._update_last_login()
            values["system_user_id"] = system_user.id
        return super(Client, self).create(values)

    def write(selfs, values):
        super(Client, selfs).write(values)
        if "name" in values:
            selfs.mapped(lambda client: client.system_user_id).write(
                {"name": selfs.__system_user_name(values["name"])}
            )
        return True

    def unlink(selfs):
        users_to_unlink = selfs.mapped(lambda client: client.system_user_id)
        ret = super(Client, selfs).unlink()
        users_to_unlink.unlink()
        return ret