# -*- 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 FpPickupRequest(models.Model):
    """Customer-initiated request for pickup of parts to be processed.

    Lifecycle:

        new → scheduled → en_route → picked_up → received → (cancelled)

    A pickup request is created when a customer phones or emails asking
    for parts to be collected. Dispatch schedules a driver + vehicle,
    the driver updates status on the road, and the receiving facility
    confirms arrival of the parts. Chain of custody events are written
    automatically as the state transitions.
    """
    _name = 'fusion.plating.pickup.request'
    _description = 'Fusion Plating — Pickup Request'
    _inherit = ['mail.thread', 'mail.activity.mixin']
    _order = 'requested_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,
    )
    pickup_address_id = fields.Many2one(
        'res.partner',
        string='Pickup Address',
        help='Leave blank to use the customer default address.',
    )
    contact_name = fields.Char(
        string='Contact Name',
    )
    contact_phone = fields.Char(
        string='Contact Phone',
    )
    requested_date = fields.Datetime(
        string='Requested Date',
        default=fields.Datetime.now,
        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,
    )
    destination_facility_id = fields.Many2one(
        'fusion.plating.facility',
        string='Destination Facility',
        tracking=True,
    )
    company_id = fields.Many2one(
        'res.company',
        related='destination_facility_id.company_id',
        store=True,
        readonly=True,
    )
    item_description = fields.Html(
        string='Items to Pick Up',
    )
    estimated_weight_kg = fields.Float(
        string='Est. Weight (kg)',
    )
    tdg_required = fields.Boolean(
        string='TDG Required',
        tracking=True,
        help='Check if the load qualifies as Transportation of Dangerous '
             'Goods. Only TDG-certified drivers and vehicles may be '
             'assigned.',
    )
    state = fields.Selection(
        [
            ('new', 'New'),
            ('scheduled', 'Scheduled'),
            ('en_route', 'En Route'),
            ('picked_up', 'Picked Up'),
            ('received', 'Received at Facility'),
            ('cancelled', 'Cancelled'),
        ],
        string='Status',
        default='new',
        required=True,
        tracking=True,
    )
    picked_up_at = fields.Datetime(
        string='Picked Up At',
        readonly=True,
    )
    received_at = fields.Datetime(
        string='Received At',
        readonly=True,
    )
    notes = fields.Html(
        string='Notes',
    )
    custody_event_ids = fields.One2many(
        'fusion.plating.chain.of.custody',
        'pickup_request_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.pickup.request')
        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 '',
            'pickup_request_id': self.id,
            'facility_id': self.destination_facility_id.id,
            'recorded_by_id': self.env.user.id,
        })

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

    def action_start_route(self):
        self.write({'state': 'en_route'})

    def action_mark_picked_up(self):
        for rec in self:
            rec.write({
                'state': 'picked_up',
                'picked_up_at': fields.Datetime.now(),
            })
            rec._log_custody_event(
                'received_from_customer',
                from_party=rec.partner_id.display_name,
                to_party=(rec.assigned_driver_id.display_name
                          or rec.vehicle_id.display_name
                          or 'Driver'),
            )

    def action_mark_received(self):
        for rec in self:
            rec.write({
                'state': 'received',
                'received_at': fields.Datetime.now(),
            })
            rec._log_custody_event(
                'entered_facility',
                from_party=(rec.assigned_driver_id.display_name
                            or rec.vehicle_id.display_name
                            or 'Driver'),
                to_party=(rec.destination_facility_id.display_name
                          or 'Facility'),
            )

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

    def action_reset_to_new(self):
        self.write({'state': 'new'})