# -*- coding: utf-8 -*-
# Copyright 2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)
# Part of the Fusion Plating product family.

from odoo import api, fields, models


class FpDelivery(models.Model):
    """Scheduled delivery of finished parts back to a customer.

    Lifecycle:

        draft → scheduled → en_route → delivered
                                     → refused
                                     → returned
                                     → cancelled

    A delivery references a job by soft reference (`job_ref`) because
    the job module is not yet built. Once the job module ships, this
    field can be deprecated in favour of a proper Many2one without
    migration.
    """
    _name = 'fusion.plating.delivery'
    _description = 'Fusion Plating — Delivery'
    _inherit = ['mail.thread', 'mail.activity.mixin']
    _order = 'scheduled_date desc, id desc'

    name = fields.Char(
        string='Reference',
        required=True,
        copy=False,
        default=lambda self: self._default_name(),
        tracking=True,
    )
    partner_id = fields.Many2one(
        'res.partner',
        string='Customer',
        required=True,
        tracking=True,
    )
    delivery_address_id = fields.Many2one(
        'res.partner',
        string='Delivery Address',
        help='Leave blank to use the customer default address.',
    )
    contact_name = fields.Char(
        string='Contact Name',
    )
    contact_phone = fields.Char(
        string='Contact Phone',
    )
    job_ref = fields.Char(
        string='Job Reference',
        help='Soft reference to the job this delivery belongs to. '
             'Will become a Many2one once the job module ships.',
        tracking=True,
    )
    scheduled_date = fields.Datetime(
        string='Scheduled Date',
        tracking=True,
    )
    assigned_driver_id = fields.Many2one(
        'hr.employee',
        string='Assigned Driver',
        tracking=True,
        domain=[('x_fc_is_driver', '=', True)],
    )
    vehicle_id = fields.Many2one(
        'fusion.plating.vehicle',
        string='Vehicle',
        tracking=True,
    )
    source_facility_id = fields.Many2one(
        'fusion.plating.facility',
        string='Source Facility',
        tracking=True,
    )
    company_id = fields.Many2one(
        'res.company',
        related='source_facility_id.company_id',
        store=True,
        readonly=True,
    )
    tdg_required = fields.Boolean(
        string='TDG Required',
        tracking=True,
    )
    coc_attachment_id = fields.Many2one(
        'ir.attachment',
        string='Certificate of Conformance',
    )
    packing_list_attachment_id = fields.Many2one(
        'ir.attachment',
        string='Packing List',
    )
    state = fields.Selection(
        [
            ('draft', 'Draft'),
            ('scheduled', 'Scheduled'),
            ('en_route', 'En Route'),
            ('delivered', 'Delivered'),
            ('refused', 'Refused'),
            ('returned', 'Returned'),
            ('cancelled', 'Cancelled'),
        ],
        string='Status',
        default='draft',
        required=True,
        tracking=True,
    )
    delivered_at = fields.Datetime(
        string='Delivered At',
        readonly=True,
    )
    pod_id = fields.Many2one(
        'fusion.plating.proof.of.delivery',
        string='Proof of Delivery',
        copy=False,
    )
    notes = fields.Html(
        string='Notes',
    )
    custody_event_ids = fields.One2many(
        'fusion.plating.chain.of.custody',
        'delivery_id',
        string='Custody Events',
    )
    custody_event_count = fields.Integer(
        compute='_compute_custody_count',
    )

    @api.model
    def _default_name(self):
        seq = self.env['ir.sequence'].next_by_code('fusion.plating.delivery')
        return seq or '/'

    def _compute_custody_count(self):
        for rec in self:
            rec.custody_event_count = len(rec.custody_event_ids)

    def _log_custody_event(self, event_type, from_party=None, to_party=None):
        self.ensure_one()
        self.env['fusion.plating.chain.of.custody'].create({
            'event_datetime': fields.Datetime.now(),
            'event_type': event_type,
            'from_party': from_party or '',
            'to_party': to_party or '',
            'delivery_id': self.id,
            'facility_id': self.source_facility_id.id,
            'recorded_by_id': self.env.user.id,
        })

    # ==========================================================================
    # Actions
    # ==========================================================================
    def action_schedule(self):
        self.write({'state': 'scheduled'})

    def action_start_route(self):
        for rec in self:
            rec.write({'state': 'en_route'})
            rec._log_custody_event(
                'loaded_on_vehicle',
                from_party=(rec.source_facility_id.display_name or 'Facility'),
                to_party=(rec.assigned_driver_id.display_name
                          or rec.vehicle_id.display_name
                          or 'Driver'),
            )

    def action_mark_delivered(self):
        for rec in self:
            rec.write({
                'state': 'delivered',
                'delivered_at': fields.Datetime.now(),
            })
            rec._log_custody_event(
                'delivered_to_customer',
                from_party=(rec.assigned_driver_id.display_name
                            or rec.vehicle_id.display_name
                            or 'Driver'),
                to_party=rec.partner_id.display_name,
            )

    def action_mark_refused(self):
        self.write({'state': 'refused'})

    def action_mark_returned(self):
        self.write({'state': 'returned'})

    def action_cancel(self):
        self.write({'state': 'cancelled'})

    def action_reset_to_draft(self):
        self.write({'state': 'draft'})

    def action_create_pod(self):
        """Create a blank POD record for this delivery and open it."""
        self.ensure_one()
        pod = self.env['fusion.plating.proof.of.delivery'].create({
            'delivery_id': self.id,
            'delivered_at': fields.Datetime.now(),
        })
        self.pod_id = pod.id
        return {
            'type': 'ir.actions.act_window',
            'res_model': 'fusion.plating.proof.of.delivery',
            'res_id': pod.id,
            'view_mode': 'form',
            'target': 'current',
        }