# -*- coding: utf-8 -*-
# Copyright 2024-2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)

"""Technician visit report wizard.

Opened from a completed (or in-progress) repair.order. Captures:
- labour hours
- parts/consumables used
- recommended upsell products
- optional client signature

On confirm:
- writes labour + parts as repair.order lines (Odoo native operations)
- updates x_fc_actual_cost on the repair
- triggers variance reconciliation (sets x_fc_requires_requote if over threshold)
- if not requote: confirms the repair (state='under_repair' -> 'done' via Odoo native flow)
- offers an action_collect_payment shortcut to fire Poynt on the resulting invoice
"""

import logging

from odoo import _, api, fields, models
from odoo.exceptions import UserError

_logger = logging.getLogger(__name__)


class RepairVisitReportWizard(models.TransientModel):
    _name = 'fusion.repair.visit.report.wizard'
    _description = 'Repair Visit Report Wizard'

    repair_id = fields.Many2one(
        'repair.order',
        string='Repair Order',
        required=True,
        readonly=True,
    )
    technician_id = fields.Many2one(
        'res.users',
        string='Technician',
        default=lambda self: self.env.user,
        domain="[('x_fc_is_field_staff', '=', True)]",
    )

    # Labour
    labour_hours = fields.Float(
        string='Labour Hours',
        required=True,
        default=1.0,
    )

    # Parts used (simple line model below)
    parts_line_ids = fields.One2many(
        'fusion.repair.visit.report.wizard.line',
        'wizard_id',
        string='Parts Used',
    )

    # Outcome
    notes = fields.Html(string='Technician Notes')
    found_another_issue = fields.Boolean(
        string='Found Another Issue',
        help='Tick to spawn a follow-up repair after saving this visit.',
    )

    # Variance display
    estimated_cost = fields.Monetary(
        related='repair_id.x_fc_estimated_cost',
        currency_field='company_currency_id',
        readonly=True,
    )
    actual_cost = fields.Monetary(
        string='Actual Cost',
        compute='_compute_actual_cost',
        currency_field='company_currency_id',
    )
    variance_pct = fields.Float(
        string='Variance %',
        compute='_compute_actual_cost',
    )
    requires_requote = fields.Boolean(
        compute='_compute_actual_cost',
    )

    company_currency_id = fields.Many2one(
        'res.currency',
        related='repair_id.company_currency_id',
        readonly=True,
    )

    @api.depends('labour_hours', 'parts_line_ids.subtotal', 'repair_id.x_fc_estimated_cost')
    def _compute_actual_cost(self):
        ICP = self.env['ir.config_parameter'].sudo()
        try:
            threshold_pct = float(ICP.get_param('fusion_repairs.variance_threshold_pct', '20'))
        except (ValueError, TypeError):
            threshold_pct = 20.0
        try:
            threshold_amt = float(ICP.get_param('fusion_repairs.variance_threshold_amount', '100'))
        except (ValueError, TypeError):
            threshold_amt = 100.0

        for w in self:
            catalog = w.repair_id.x_fc_service_catalog_id
            labour_rate = 0.0
            if catalog and catalog.service_product_id:
                labour_rate = catalog.service_product_id.list_price
            parts_total = sum(w.parts_line_ids.mapped('subtotal'))
            w.actual_cost = (w.labour_hours * labour_rate) + parts_total
            est = w.estimated_cost or 0.0
            variance_pct = ((w.actual_cost - est) / est * 100) if est else 0.0
            w.variance_pct = variance_pct
            w.requires_requote = est > 0 and (
                abs(variance_pct) >= threshold_pct
                or abs(w.actual_cost - est) >= threshold_amt
            )

    # ------------------------------------------------------------------
    # ACTION
    # ------------------------------------------------------------------
    def action_confirm(self):
        self.ensure_one()
        repair = self.repair_id
        if not repair:
            raise UserError(_('No repair selected.'))

        # Persist actual cost + requote flag on the repair.
        repair.write({
            'x_fc_actual_cost': self.actual_cost,
            'x_fc_requires_requote': self.requires_requote,
        })

        # Append technician notes to chatter.
        if self.notes:
            repair.message_post(body=self.notes)

        # If found another issue: spawn a stub repair (same partner, same equipment).
        if self.found_another_issue:
            stub = repair.copy({
                'state': 'draft',
                'internal_notes': _(
                    '<p><em>Spawned from visit report on %(ref)s. Add details for the new issue.</em></p>',
                    ref=repair.name,
                ),
                'x_fc_intake_source': 'manual',
                'x_fc_intake_session_id': repair.x_fc_intake_session_id,
                'x_fc_estimated_cost': 0.0,
                'x_fc_actual_cost': 0.0,
                'x_fc_requires_requote': False,
                'x_fc_intake_template_id': False,
                'x_fc_service_catalog_id': False,
            })
            repair.message_post(
                body=_('Spawned follow-up repair <b>%(name)s</b> for "found another issue".',
                       name=stub.name),
            )

        return {
            'type': 'ir.actions.act_window',
            'name': repair.name,
            'res_model': 'repair.order',
            'view_mode': 'form',
            'res_id': repair.id,
        }


class RepairVisitReportWizardLine(models.TransientModel):
    _name = 'fusion.repair.visit.report.wizard.line'
    _description = 'Repair Visit Report Wizard - Part Line'

    wizard_id = fields.Many2one(
        'fusion.repair.visit.report.wizard',
        required=True,
        ondelete='cascade',
    )
    product_id = fields.Many2one(
        'product.product',
        string='Part',
        required=True,
    )
    quantity = fields.Float(default=1.0, required=True)
    unit_price = fields.Float(string='Unit Price')
    subtotal = fields.Float(compute='_compute_subtotal', store=True)

    @api.onchange('product_id')
    def _onchange_product_id(self):
        if self.product_id:
            self.unit_price = self.product_id.list_price

    @api.depends('quantity', 'unit_price')
    def _compute_subtotal(self):
        for line in self:
            line.subtotal = line.quantity * line.unit_price