"""Inherit res.partner: add follow-up state fields."""

from odoo import _, api, fields, models


FOLLOWUP_STATUS = [
    ('no_action', 'No Action Needed'),
    ('action_due', 'Action Due'),
    ('paused', 'Paused'),
    ('blocked', 'Blocked'),
    ('with_credit_team', 'With Credit Team'),
]


class ResPartner(models.Model):
    _inherit = "res.partner"

    fusion_followup_status = fields.Selection(
        FOLLOWUP_STATUS, default='no_action', tracking=True,
        help="Current follow-up status as computed by the engine.")
    fusion_followup_paused_until = fields.Date(
        tracking=True,
        help="Pause follow-ups for this partner until this date.")
    fusion_followup_last_level_id = fields.Many2one(
        'fusion.followup.level',
        help="The most-recent follow-up level this partner has been contacted at.")
    fusion_followup_last_run_date = fields.Datetime(readonly=True)
    fusion_followup_run_ids = fields.One2many(
        'fusion.followup.run', 'partner_id', string='Follow-up History')
    fusion_followup_run_count = fields.Integer(
        compute='_compute_fusion_followup_run_count')
    fusion_followup_risk_score = fields.Integer(
        readonly=True, default=0,
        help="Latest computed payment risk (0-100). Updated by cron.")
    fusion_followup_risk_band = fields.Selection([
        ('low', 'Low'), ('medium', 'Medium'),
        ('high', 'High'), ('critical', 'Critical'),
    ], default='low', readonly=True)

    def _compute_fusion_followup_run_count(self):
        for partner in self:
            partner.fusion_followup_run_count = len(partner.fusion_followup_run_ids)

    def action_view_followup_history(self):
        self.ensure_one()
        return {
            'type': 'ir.actions.act_window',
            'res_model': 'fusion.followup.run',
            'view_mode': 'list,form',
            'domain': [('partner_id', '=', self.id)],
            'context': {'default_partner_id': self.id},
        }