<?php

// Apply the filter to multiple hooks to ensure choices are available during render, validation, and submission
add_filter('gform_pre_render', 'populate_taxonomy_terms');
add_filter('gform_pre_validation', 'populate_taxonomy_terms');
add_filter('gform_pre_submission_filter', 'populate_taxonomy_terms');
add_filter('gform_admin_pre_render', 'populate_taxonomy_terms');

function populate_taxonomy_terms($form)
{
	// Specify the form ID and the ID of the select field
	$form_id = 2;
	$field_id = 16;

	// Check if the current form matches the specified form ID
	if ($form['id'] == $form_id) {
		// Retrieve custom taxonomy terms
		$terms = get_terms(array(
			'taxonomy' => 'etiquettes',
			'hide_empty' => false, // Include empty terms
		));

		// Find the checkbox field by ID
		foreach ($form['fields'] as &$field) {
			if ($field->id == $field_id) {
				// Prepare choices and inputs array for checkboxes
				$choices = array();
				$inputs = array();
				$index = 1;

				foreach ($terms as $term) {
					$choices[] = array(
						'text' => $term->name,
						'value' => $term->name, // Use term name as value for display
						'isSelected' => false,
					);

					// For checkboxes, each choice needs a corresponding input
					$inputs[] = array(
						'id' => $field->id . '.' . $index,
						'label' => $term->name,
						'name' => '',
					);

					$index++;
				}

				// Update choices and inputs for the checkbox field
				$field->choices = $choices;
				$field->inputs = $inputs;

				// Ensure the field is not marked as administrative only
				$field->adminOnly = false;


				break;
			}
		}
	}

	return $form;
}