# -*- coding: utf-8 -*-

from odoo import api, fields, models, _


class WheelchairAssessmentLine(models.Model):
    _name = 'fusion.wc.assessment.line'
    _description = 'Wheelchair Assessment Line Item'
    _order = 'section_sequence, sequence, id'

    assessment_id = fields.Many2one('fusion.wc.assessment', string='Assessment',
        required=True, ondelete='cascade', index=True)
    section_id = fields.Many2one('fusion.wc.section', string='Section', index=True)
    section_sequence = fields.Integer(
        related='section_id.sequence', store=True, string='Section Order')
    sequence = fields.Integer(string='Sequence', default=10)

    # Product
    product_id = fields.Many2one('product.product', string='Product', index=True)
    product_name = fields.Char(string='Description',
        help='Can override product name with custom description')
    quantity = fields.Float(string='Quantity', default=1.0)

    # ADP info
    adp_device_code = fields.Char(string='ADP Code')
    adp_price = fields.Float(string='ADP Price', digits='Product Price')
    unit_price = fields.Float(string='Selling Price', digits='Product Price')

    # Build type (for seating items)
    build_type = fields.Selection([
        ('modular', 'Modular'),
        ('custom_fabricated', 'Custom Fabricated'),
    ], string='Build Type')

    # Clinical rationale (required for certain items)
    clinical_rationale = fields.Text(string='Clinical Rationale')

    # Computed pricing
    subtotal = fields.Float(string='Subtotal',
        compute='_compute_subtotal', store=True, digits='Product Price')
    adp_portion = fields.Float(string='ADP Portion',
        compute='_compute_portions', store=True, digits='Product Price')
    client_portion = fields.Float(string='Client Portion',
        compute='_compute_portions', store=True, digits='Product Price')

    # Upcharge tracking
    is_upcharge = fields.Boolean(string='Auto-Applied Upcharge', default=False)
    upcharge_rule_id = fields.Many2one('fusion.wc.upcharge.rule',
        string='Triggered By Rule')
    upcharge_reason = fields.Char(string='Upcharge Reason')

    # Section-specific measurements
    width = fields.Float(string='Width', digits=(10, 2))
    depth = fields.Float(string='Depth', digits=(10, 2))
    height = fields.Float(string='Height', digits=(10, 2))

    notes = fields.Text(string='Notes')

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

    @api.depends('subtotal', 'adp_price', 'quantity', 'assessment_id.client_type')
    def _compute_portions(self):
        """Estimate ADP and client portions based on client type and ADP price."""
        for line in self:
            if not line.adp_price or not line.subtotal:
                line.adp_portion = 0.0
                line.client_portion = line.subtotal
                continue

            client_type = line.assessment_id.client_type or 'reg'
            adp_base = line.adp_price * line.quantity

            # Determine ADP coverage percentage
            if client_type == 'reg':
                # REG: 75% ADP, 25% client
                adp_amount = adp_base * 0.75
            else:
                # ODS, ACS, OWP, etc.: 100% ADP
                adp_amount = adp_base

            # Client pays the rest (including anything above ADP price)
            line.adp_portion = min(adp_amount, line.subtotal)
            line.client_portion = line.subtotal - line.adp_portion

    @api.onchange('product_id')
    def _onchange_product_id(self):
        """Auto-fill ADP code and pricing from product."""
        if self.product_id:
            tmpl = self.product_id.product_tmpl_id
            self.adp_device_code = tmpl.x_fc_adp_device_code or ''
            self.adp_price = tmpl.x_fc_adp_price or 0.0
            self.unit_price = self.product_id.lst_price
            if not self.product_name:
                self.product_name = self.product_id.display_name