# -*- 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 fields, models


class FpBathParameter(models.Model):
    """Definition of a bath chemistry parameter.

    Parameters are process-agnostic at the schema level (e.g. "Temperature",
    "pH", "Nickel concentration"). Each process type references a set of
    parameters via fusion.plating.process.type.parameter_ids. Actual target
    ranges per bath are stored on fusion.plating.bath (per-bath overrides)
    or on the bath recipe.
    """
    _name = 'fusion.plating.bath.parameter'
    _description = 'Fusion Plating — Bath Parameter'
    _order = 'sequence, name'

    name = fields.Char(
        string='Parameter',
        required=True,
        translate=True,
        help='Display name (e.g. "Nickel Concentration", "pH").',
    )
    code = fields.Char(
        string='Code',
        required=True,
        help='Short code used in logs and exports (e.g. "Ni", "PH", "TEMP").',
    )
    sequence = fields.Integer(
        string='Sequence',
        default=10,
    )
    parameter_type = fields.Selection(
        [
            ('concentration', 'Concentration'),
            ('temperature', 'Temperature'),
            ('ph', 'pH'),
            ('conductivity', 'Conductivity'),
            ('turbidity', 'Turbidity'),
            ('ratio', 'Ratio'),
            ('count', 'Count / Age'),
            ('other', 'Other'),
        ],
        string='Type',
        required=True,
        default='concentration',
    )
    uom = fields.Char(
        string='Unit',
        help='Display unit (e.g. "g/L", "°C", "pH", "MTO").',
    )
    target_min = fields.Float(
        string='Default Target Min',
        help='Default target minimum. Per-bath overrides are allowed.',
    )
    target_max = fields.Float(
        string='Default Target Max',
        help='Default target maximum. Per-bath overrides are allowed.',
    )
    warning_tolerance = fields.Float(
        string='Warning Tolerance %',
        default=10.0,
        help='Distance from target limit at which a reading is flagged as warning.',
    )
    decimals = fields.Integer(
        string='Decimals',
        default=2,
    )
    description = fields.Text(
        string='Description',
        translate=True,
    )
    active = fields.Boolean(
        string='Active',
        default=True,
    )

    _sql_constraints = [
        (
            'fp_bath_parameter_code_uniq',
            'unique(code)',
            'Bath parameter code must be unique.',
        ),
    ]