<?php
namespace Pecee\Http\Input;

class Input {

    /**
     * @var \Pecee\Http\Input\InputCollection
     */
    public $get;

    /**
     * @var \Pecee\Http\Input\InputCollection
     */
    public $post;

    /**
     * @var \Pecee\Http\Input\InputCollection
     */
    public $file;

    public function __construct() {
        $this->setGet();
        $this->setPost();
        $this->setFile();
    }

    /**
     * Get all get/post items
     * @param array|null $filter Only take items in filter
     * @return array
     */
    public function all(array $filter = null) {
        $output = $this->get->getData();
        $output = array_merge($output, $this->post->getData());

        if($filter !== null) {
            $tmp = array();
            foreach($output as $key => $val) {
                if(in_array($key, $filter)) {
                    $tmp[$key] = $val;
                }
            }
            return $tmp;
        }

        return $output;
    }

    public function getObject($index, $default = null) {
        $index = (strpos($index, '[') > -1) ? substr($index, 0, strpos($index, '[')) : $index;

        $element = $this->get->findFirst($index);

        if($element !== null) {
            return $element;
        }

        $element = $this->post->findFirst($index);

        if($element !== null) {
            return $element;
        }

        $element = $this->file->findFirst($index);

        if($element !== null) {
            return $element;
        }

        return $default;
    }

    /**
     * Get input element value matching index
     * @param string $index
     * @param string|null $default
     * @return string|null
     */
    public function get($index, $default = null) {

        $key = (strpos($index, '[') > -1) ? substr($index, strpos($index, '[')+1, strpos($index, ']') - strlen($index)) : null;
        $index = (strpos($index, '[') > -1) ? substr($index, 0, strpos($index, '[')) : $index;

        $item = $this->getObject($index);

        if($item !== null) {

            if (is_array($item->getValue())) {
                return ($key !== null && isset($item->getValue()[$key])) ? $item->getValue()[$key] : $item->getValue();
            }

            return ($item->getValue() === null) ? $default : $item->getValue();
        }

        return $default;
    }

    public function setGet() {
        $this->get = new InputCollection();

        if(count($_GET)) {
            foreach($_GET as $key => $get) {
                if(!is_array($get)) {
                    $this->get->{$key} = new InputItem($key, $get);
                    continue;
                }

                $output = array();

                foreach($get as $k => $g) {
                    $output[$k] = new InputItem($k, $g);
                }

                $this->get->{$key} = new InputItem($key, $output);
            }
        }
    }

    public function setPost() {
        $this->post = new InputCollection();

        $postVars = array();

        if(in_array($_SERVER['REQUEST_METHOD'], ['PUT', 'PATCH', 'DELETE'])) {
            parse_str(file_get_contents('php://input'), $postVars);
        } else {
            $postVars = $_POST;
        }

        if(count($postVars)) {

            foreach($postVars as $key => $post) {
                if(!is_array($post)) {
                    $this->post->{strtolower($key)} = new InputItem($key, $post);
                    continue;
                }

                $output = array();

                foreach($post as $k=>$p) {
                    $output[$k] = new InputItem($k, $p);
                }

                $this->post->{strtolower($key)} = new InputItem($key, $output);
            }
        }
    }

    public function setFile() {
        $this->file = new InputCollection();

        if(count($_FILES)) {
            foreach($_FILES as $key => $value) {
                // Multiple files
                if(!is_array($value['name'])) {
                    // Strip empty values
                    if($value['error'] != '4') {
                        $file = new InputFile();
                        $file->setIndex($key);
                        $file->setName($value['name']);
                        $file->setSize($value['size']);
                        $file->setType($value['type']);
                        $file->setTmpName($value['tmp_name']);
                        $file->setError($value['error']);
                        $this->file->{strtolower($key)} = $file;
                    }
                    continue;
                }

                $output = array();

                foreach($value['name'] as $k=>$val) {
                    // Strip empty values
                    if($value['error'][$k] != '4') {
                        $file = new InputFile();
                        $file->setIndex($k);
                        $file->setName($value['name'][$k]);
                        $file->setSize($value['size'][$k]);
                        $file->setType($value['type'][$k]);
                        $file->setTmpName($value['tmp_name'][$k]);
                        $file->setError($value['error'][$k]);
                        $output[$k] = $file;
                    }
                }

                $this->file->{strtolower($key)} = new InputItem($key, $output);
            }
        }
    }

}