from odoo import api, fields, models


class SlideSlidePartner(models.Model):
    _name = 'slide.slide.partner'
    _description = 'Slide / Partner decorated m2m'
    _table = 'slide_slide_partner'
    _rec_name = 'partner_id'

    slide_id = fields.Many2one('slide.slide', string="Content", ondelete="cascade", index=True, required=True)
    slide_category = fields.Selection(related='slide_id.slide_category')
    channel_id = fields.Many2one(
        'slide.channel', string="Channel",
        related="slide_id.channel_id", store=True, index=True, ondelete='cascade')
    partner_id = fields.Many2one('res.partner', index=True, required=True, ondelete='cascade')
    vote = fields.Integer('Vote', default=0)
    completed = fields.Boolean('Completed')
    quiz_attempts_count = fields.Integer('Quiz attempts count', default=0)

    _slide_partner_uniq = models.Constraint(
        'unique(slide_id, partner_id)',
        'A partner membership to a slide must be unique!',
    )
    _check_vote = models.Constraint(
        'CHECK(vote IN (-1, 0, 1))',
        'The vote must be 1, 0 or -1.',
    )

    @api.model_create_multi
    def create(self, vals_list):
        res = super().create(vals_list)
        completed = res.filtered('completed')
        if completed:
            completed._recompute_completion()
        return res

    def write(self, vals):
        slides_completion_to_recompute = self.env['slide.slide.partner']
        if 'completed' in vals:
            slides_completion_to_recompute = self.filtered(
                lambda slide_partner: slide_partner.completed != vals['completed'])

        res = super().write(vals)

        if slides_completion_to_recompute:
            slides_completion_to_recompute._recompute_completion()

        return res

    def _recompute_completion(self):
        self.env['slide.channel.partner'].search([
            ('channel_id', 'in', self.channel_id.ids),
            ('partner_id', 'in', self.partner_id.ids),
            ('member_status', 'not in', ('completed', 'invited'))
        ])._recompute_completion()