# -*- coding: utf-8 -*-
from odoo import models, fields, api, _
import re

class ReservationCustomField(models.Model):
    _name = 'reservation.custom.field'
    _description = 'Reservation Custom Field'
    _order = 'sequence, id'

    name = fields.Char(string='Field Label / Question', required=True, help="Label shown on the reservation form.")
    field_key = fields.Char(string='Field Key', compute='_compute_field_key', store=True, readonly=False,
                            help="Technical identifier for form input.")
    field_type = fields.Selection([
        ('char', 'Text (Single Line)'),
        ('text', 'Text (Multi-line)'),
        ('selection', 'Dropdown (Selection)'),
        ('boolean', 'Checkbox (Yes / No)'),
        ('integer', 'Number'),
    ], string='Field Type', default='char', required=True)
    selection_options = fields.Text(string='Dropdown Options',
                                    help="Comma-separated list of choices, e.g. Vegetarian, Vegan, Halal, Gluten-Free")
    placeholder = fields.Char(string='Placeholder', help="Optional placeholder text for the input box.")
    is_required = fields.Boolean(string='Required', default=False, help="Whether this field must be filled by customer.")
    is_active = fields.Boolean(string='Active (Show on Form)', default=True, help="If checked, field will appear on reservation form.")
    sequence = fields.Integer(string='Sequence', default=10)

    @api.depends('name')
    def _compute_field_key(self):
        for rec in self:
            if rec.name and not rec.field_key:
                clean = re.sub(r'[^a-zA-Z0-9_]', '_', rec.name.lower().strip())
                rec.field_key = f"custom_{clean[:30]}"

    def get_options_list(self):
        """ Return options as a list of strings for selection rendering """
        self.ensure_one()
        if not self.selection_options:
            return []
        return [opt.strip() for opt in self.selection_options.split(',') if opt.strip()]


class ReservationCustomFieldValue(models.Model):
    _name = 'reservation.custom.field.value'
    _description = 'Reservation Custom Field Answer'
    _order = 'id'

    reservation_id = fields.Many2one('restaurant.reservation', string='Reservation', ondelete='cascade', required=True)
    field_id = fields.Many2one('reservation.custom.field', string='Custom Field', ondelete='cascade', required=True)
    field_name = fields.Char(related='field_id.name', string='Field Label', readonly=True)
    field_type = fields.Selection(related='field_id.field_type', string='Field Type', readonly=True)
    value = fields.Text(string='Value / Answer')