# -*- coding: utf-8 -*-
# Copyright 2026 Nexa Systems Inc.
# License OPL-1 (Odoo Proprietary License v1.0)
from odoo import api, fields, models


class FpPollutantInventory(models.Model):
    _name = 'fusion.plating.pollutant.inventory'
    _description = 'Fusion Plating - Pollutant Inventory Entry'
    _order = 'year desc, facility_id, substance'

    name = fields.Char(string='Reference', compute='_compute_name', store=True)
    year = fields.Integer(string='Year', required=True, default=lambda s: fields.Date.context_today(s).year)
    facility_id = fields.Many2one('fusion.plating.facility', string='Facility', required=True, ondelete='cascade')
    company_id = fields.Many2one('res.company', related='facility_id.company_id', store=True, readonly=True)
    substance = fields.Char(string='Substance', required=True)
    cas_number = fields.Char(string='CAS #')
    manufactured_kg = fields.Float(string='Manufactured (kg)', digits=(16, 3))
    processed_kg = fields.Float(string='Processed (kg)', digits=(16, 3))
    used_kg = fields.Float(string='Used (kg)', digits=(16, 3))
    released_kg = fields.Float(string='Released (kg)', digits=(16, 3))
    transferred_kg = fields.Float(string='Transferred (kg)', digits=(16, 3))
    threshold_kg = fields.Float(string='Threshold (kg)')
    threshold_exceeded = fields.Boolean(string='Threshold Exceeded', compute='_compute_threshold_exceeded', store=True)
    notes = fields.Text(string='Notes')

    _sql_constraints = [
        ('fp_pollutant_inv_uniq', 'unique(facility_id, year, substance)',
         'Pollutant inventory must be unique per facility / year / substance.'),
    ]

    @api.depends('year', 'substance', 'facility_id')
    def _compute_name(self):
        for rec in self:
            parts = []
            if rec.year:
                parts.append(str(rec.year))
            if rec.substance:
                parts.append(rec.substance)
            if rec.facility_id:
                parts.append(rec.facility_id.code or rec.facility_id.name or '')
            rec.name = ' / '.join(p for p in parts if p) or '/'

    @api.depends('manufactured_kg', 'processed_kg', 'used_kg', 'threshold_kg')
    def _compute_threshold_exceeded(self):
        for rec in self:
            if rec.threshold_kg and rec.threshold_kg > 0:
                total = (rec.manufactured_kg or 0.0) + (rec.processed_kg or 0.0) + (rec.used_kg or 0.0)
                rec.threshold_exceeded = total >= rec.threshold_kg
            else:
                rec.threshold_exceeded = False