# -*- coding: utf-8 -*-
# Copyright 2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)

from odoo import api, fields, models


class FpMaintenancePlan(models.Model):
    """Maintenance plan template.

    Groups checklist nodes and links to an equipment category.
    Plans are selected when creating maintenance events.
    """
    _name = 'fp.maintenance.plan'
    _description = 'Fusion Plating — Maintenance Plan'
    _inherit = ['mail.thread']
    _order = 'name'

    name = fields.Char(
        string='Name',
        required=True,
        tracking=True,
        help='e.g. "Tank A-10 Nickel Nichem HP 1170 - Daily Titration"',
    )
    equipment_category_id = fields.Many2one(
        'maintenance.equipment.category',
        string='Equipment Type',
        ondelete='set null',
        tracking=True,
    )
    description = fields.Html(string='Description')
    default_assignee_id = fields.Many2one(
        'res.users',
        string='Default Assignee',
    )
    node_ids = fields.One2many(
        'fp.maintenance.node',
        'plan_id',
        string='Checklist Items',
    )
    node_count = fields.Integer(
        string='Items',
        compute='_compute_node_count',
    )
    active = fields.Boolean(default=True)
    company_id = fields.Many2one(
        'res.company',
        string='Company',
        default=lambda self: self.env.company,
    )

    def _compute_node_count(self):
        for plan in self:
            plan.node_count = len(plan.node_ids)

    def action_view_nodes(self):
        self.ensure_one()
        return {
            'type': 'ir.actions.act_window',
            'name': f'Items — {self.name}',
            'res_model': 'fp.maintenance.node',
            'view_mode': 'list,form',
            'domain': [('plan_id', '=', self.id)],
            'context': {'default_plan_id': self.id},
        }