<?php

class Form_OptionFactory {
    public $db;
    public $registry;
    function __construct($db, $registry = null) {
        $this->db = $db;
        $this->registry = $registry;
    }

    function create(Form_Select $field, $input) {
        if (isset($input['options.resid'])) {
            $type = $input['options.resid'];

            $res = new Model_Resources($this->db);
            $field->options = $this->optionsArray('id_section', 'title', $res->getSubsections('', $type));

        } else if (isset($input['options.res'])) {
            $type = $input['options.res'];

            $res = new Model_Resources($this->db);
            $field->options = $this->optionsArray('path', 'title', $res->getSubsections('', $type));

        } else if (isset($input['options.all_res'])) {
            $type = $input['options.all_res'];

            $res = new Model_Resources($this->db);
            $field->options = $this->optionsArray('id_resource', 'subtitle', $res->getAllResource($type));

        } else if (isset($input['options.db'])) {
            list($table, $keyvalue) = explode(":", $input['options.db']);
            list($key, $value) = explode(",", $keyvalue);
            try {
                $query_result = $this->db->executeQuery("SELECT * FROM $table");
                $field->options = $this->optionsDB($key, $value, $query_result);
            } catch(Exception $ex) {
                $field->options = [];
            }
        } elseif (isset($input['options.pair'])) {
            $field->options = $this->optionsPair($input['options.pair']);
        } elseif (isset($input['options.model'])) {
            $factory = new Model_Factory($this->db, $this->registry);
            $model = $factory->getModel($input['options.model']);
            $field->options = $model->getAllAsOptions();
        } else {
            $field->options = $input['options'];
        }
    }

    public function optionsDB($key, $val, $res) {
        $result = array();
        while($res->next()) {
            $result[] = array('value' => $res->getInt($key), 'name' => $res->getString($val));
        }
        return $result;
    }

    public function optionsArray($key, $val, $res) {
        $result = array();
        foreach($res as $item) {
            $result[] = array('value' => $item->{$key}, 'name' => $item->{$val});
        }
        return $result;
    }

    public function optionsPair($list, $selected = false) {
        $result = array();
        foreach ($list as $key => $value) {
            $result [] = array('value' => $key, 'name' => $value, 'selected' => $key == $selected);
        }
        return $result;
    }
}