<?php
namespace classes\lib;

class SurveyEngine {

	public const QUESTION_TYPES = [
		'text_line' => 'Single line text entry',
		'text_box' => 'Multiple line text entry',
		'email' => 'Email address',
		'radio_group' => 'Group of radio buttons',
		'checkbox' => 'Single checkbox',
		'checkbox_group' => 'Group of checkboxes',
	];

	public const AUTO_POPULATE_FIELDS = [
		'' => 'None',
		'last_name' => 'Last Name',
		'first_name' => 'First Name',
		'combined_name' => 'Combined First and Last Name',
		'title' => 'Title',
		'org' => 'Hotel/Company',
		'email' => 'Email',
	];

	public const PLACEHOLDERS = [
		'last_name' => 'Last Name',
		'first_name' => 'First Name',
		'title' => 'Title',
		'org' => 'Hotel/Company',
		'email' => 'Email',
		'event_name' => 'Event Name',
		'event_date' => 'Event Date',
		'event_time' => 'Event Time',
		'survey_link' => 'Survey Link - start tag',
		'/survey_link' => 'Survey Link - end tag',
	];

	public static function copy_template(int $source_template_id): int {
		global $db;
		try {
			$db->beginTransaction();
			$sql = "
				INSERT INTO survey_templates (
					description,
					default_email_html,
					default_email_subject,
					default_email_reply_name,
					default_email_reply_address,
					default_cgr_type_id,
					create_date,
					update_date,
					create_by,
					update_by
				)
				SELECT
					CONCAT(description, ' - COPY'),
					default_email_html,
					default_email_subject,
					default_email_reply_name,
					default_email_reply_address,
					default_cgr_type_id,
					NOW(),
					NOW(),
					:user_id,
					:user_id
				FROM survey_templates WHERE id = :id
			";
			$stmt_update = $db->prepare($sql);
			$stmt_update->execute([
				':id' => $source_template_id,
				':user_id' => trim($_SESSION['user_id']),
			]);
			$new_template_id = last_id();
			$sql = "
				INSERT INTO survey_template_questions (
					survey_template_id,
					question_type,
					question_text,
					required,
					read_only,
					auto_populate_field,
					seq,
					answer_list,
					horizontal_layout,
					create_date,
					update_date,
					create_by,
					update_by
				)
				SELECT
					:new_template_id,
					question_type,
					question_text,
					required,
					read_only,
					auto_populate_field,
					seq,
					answer_list,
					horizontal_layout,
					NOW(),
					NOW(),
					:user_id,
					:user_id
				FROM survey_template_questions WHERE survey_template_id = :source_template_id
			";
			$stmt_update = $db->prepare($sql);
			$stmt_update->execute([
				':source_template_id' => $source_template_id,
				':new_template_id' => $new_template_id,
				':user_id' => trim($_SESSION['user_id']),
			]);
			$db->commit();
		} catch(\Exception $e) {
			db_err_rollback($e);
		}
		return $new_template_id;
	}
}