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

"""Emergency / rush service rate card.

The pissed-off-grumpy-client scenario: stairlift dead at 5 PM Friday, needs
service yesterday. Office bumps them into today's route OR books them
priority for tomorrow OR (if after-hours / weekend) charges an emergency
surcharge. Sometimes more than one technician is needed (e.g. lifting an
adjustable bed back onto its frame) - per_tech_multiplier handles that.

Pricing logic on repair.order:

    surcharge = base_amount + base_amount * per_tech_multiplier *
                (techs_required - 1)

Example: same-day stairlift, 1 tech, base $250, multiplier 0.5
    -> $250 surcharge
Example: same-day stairlift, 2 techs (one to hold, one to wrench)
    -> $250 + $250 * 0.5 * 1 = $375 surcharge
"""

from odoo import _, api, fields, models


class FusionRepairEmergencyCharge(models.Model):
    _name = 'fusion.repair.emergency.charge'
    _description = 'Rush / Emergency Service Surcharge Rate'
    _order = 'category_id, tier'

    name = fields.Char(
        compute='_compute_name',
        store=True,
    )
    category_id = fields.Many2one(
        'fusion.repair.product.category',
        string='Equipment Category',
        required=True,
        ondelete='cascade',
        index=True,
    )
    tier = fields.Selection(
        [
            ('same_day', 'Same Day (during business hours)'),
            ('next_day', 'Next Day Priority'),
            ('after_hours', 'After Hours (5pm-9pm weekday)'),
            ('weekend', 'Weekend'),
            ('holiday', 'Statutory Holiday'),
        ],
        string='Tier',
        required=True,
    )
    base_amount = fields.Monetary(
        string='Base Surcharge',
        currency_field='currency_id',
        required=True,
        default=0.0,
        help='Surcharge for ONE technician on top of the normal labour / parts cost.',
    )
    per_tech_multiplier = fields.Float(
        string='Additional Tech Multiplier',
        default=0.5,
        help='Each additional technician adds base_amount * this multiplier '
             'to the surcharge. Default 0.5 means tech #2 costs half the base.',
    )
    currency_id = fields.Many2one(
        'res.currency',
        default=lambda self: self.env.company.currency_id,
    )
    company_id = fields.Many2one(
        'res.company',
        default=lambda self: self.env.company,
    )
    active = fields.Boolean(default=True)
    description = fields.Text(
        help='Internal note - shown to CS when they pick this tier in the wizard.',
    )

    _cat_tier_unique = models.Constraint(
        'unique(category_id, tier, company_id)',
        'Only one emergency-charge row per (category, tier, company).',
    )

    @api.depends('category_id', 'tier', 'base_amount')
    def _compute_name(self):
        for r in self:
            tier_label = dict(self._fields['tier'].selection).get(r.tier) or '?'
            cat = r.category_id.name or '?'
            r.name = f'{cat} - {tier_label} (${r.base_amount:.0f})'

    @api.model
    def calculate(self, category, tier, techs_required=1):
        """Return the surcharge for the given category + tier + tech count,
        or 0.0 if no rate is configured."""
        if not category or not tier or techs_required < 1:
            return 0.0
        rate = self.sudo().search([
            ('category_id', '=', category.id),
            ('tier', '=', tier),
            ('active', '=', True),
            ('company_id', 'in', self.env.companies.ids),
        ], limit=1)
        if not rate:
            return 0.0
        extra = max(techs_required - 1, 0)
        return rate.base_amount + (rate.base_amount * rate.per_tech_multiplier * extra)