from odoo import models, fields, api
from odoo.exceptions import UserError

class SelectedApps(models.Model):
    _name = 'selected.apps'
    _description = 'Selected Applications'

    subscription_id = fields.Many2one('user.subscription', string='Subscription', 
                                       required=True, ondelete='cascade')
    app_name = fields.Char(string='App Name', required=True)
    app_technical_name = fields.Char(string='Technical Name')
    app_icon = fields.Char(string='App Icon')
    app_category = fields.Selection([
        ('sales', 'Sales'),
        ('finance', 'Finance'),
        ('services', 'Services'),
        ('marketing', 'Marketing'),
        ('other', 'Other'),
    ], string='Category', default='other')
    is_installed = fields.Boolean(string='Installed', default=False)

    @api.constrains('subscription_id')
    def _check_max_apps(self):
        for record in self:
            subscription = record.subscription_id
            if subscription.max_apps_allowed:
                app_count = self.search_count([('subscription_id', '=', subscription.id)])
                if app_count > subscription.max_apps_allowed:
                    raise UserError(
                        f'You can select at most {subscription.max_apps_allowed} apps'
                    )