<?php

namespace App\Http\Controllers;

require_once('C:\xampp\htdocs\jakiepiwomamkupic\app\Questions.php');
require_once('C:\xampp\htdocs\jakiepiwomamkupic\app\http\controllers\ValidationController.php');

use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use App\Http\Controllers\Controller;
use App\Http\Controllers\ValidationController as Validation;
use App\Http\Controllers\PickingAlgorithm as Algorithm;
use App\Traits\Questions;
use App\Styles;

class StylePickerController extends Controller
{

    use Questions;

    public $errors = false;
    public $errorMessage = array();

    public function __construct() {


    }

    /*
    * Custom functions
    */

    // Github: https://gist.github.com/yeco/412610
    private function array_push_assoc($array, $key, $value){
        $array[$key] = $value;
        return $array;
    }

    // Prints an output with <pre> styling
    public function printPre($data, $die = false) {

        $output = var_dump($data);

        echo "<pre>";
        print_r($output);
        echo "</pre>";

        if ($die) {
            die();
        }
    }

    /*
    * Show all the questions
    * return: view
    */
    public function showQuestions() {

        return view('index', ['questions' => Questions::$questions, 'accurate_questions' => Questions::$accurate_questions]);

    }

    // Pokaż odpowiedzi na pytania użytkownika
    public function showAnsweredQuestions() {

        return view('pickedstyles', []);

    }

    /*
    * Prepares a TPL for an e-mail
    * return: $mailTPL string
    */
    private function prepareEmailTemplate() : string {

        $mailTPL = '';
        $mailTPL .= '';
        $mailTPL .= '';

        return $mailTPL;

    }

    /*
    * Sends an e-mail if user wants to
    * return: bool
    */
    public function sendEmail() : bool {

        $validation = new Validation();

        $headers = 'From: jakiepiwomamwybrac@piwolucja.pl' . "\r\n" .
        'Reply-To: jakiepiwomamwybrac@piwolucja.pl' . "\r\n";

        $subject = $_POST['username'] . ' oto 3 najlepsze style dla Ciebie';

        if ($validation->validateEmail()) {
            mail($_POST['email'], $subject, $this->prepareEmailTemplate(), $headers);
            return true;
        } else {
            $this->error('Wiadomosc');
            return false;
        }

    }

    private function setNewsletter() : integer {

        $validation = new Validation();

        if ($validation->validateEmail()) {
            $set_newsletter = 1;
        } else {
            $set_newsletter = 0;
        }

        // Intagracja z MailChimpem - wywołanie w InsertToDB

        return $set_newsletter;

    }

    private function prepareAnswers() : ?string {

        $answers = array();
        $validation = new Validation();

        for ($i = 1; $i <= 15; $i++) {

            if (is_null($_POST['answer-'.$i.''])) {
                continue;
            }

            $answers = $this->array_push_assoc($answers, 'answer-'.$i, $_POST['answer-'.$i.'']);
        }

        if (!$validation->validateAnswers($answers)) {
            $errorMessage[] = '';
            return false;
        } else {
            $JSON_answers = json_encode($answers); //JSON $_POST answers
            return $JSON_answers;
        }

    }

    // Wstawia do bazy odpowiedzi użytkownika
    // Rozdzielić na osobną funkcjędo bazy, osobną do wywołania innych rzeczy
    public function insertToDB() : string {

        $validation = new Validation();

        $name = $_POST['username'] ?? '';
        $email = $validation->validateEmail($_POST['email']) ?? '';
        ($_POST['newsletter'] == 'Tak') ? $newsletter = 1 : $newsletter = 0;

        if ($this->prepareAnswers() && empty($errorMessage)) {
            $insert_answers = DB::insert("INSERT INTO `user_answers` (name, e_mail, newsletter, answers, created_at)
                                            VALUES
                                        ('{$name}',
                                        '{$email}',
                                        '{$newsletter}',
                                        '{$this->prepareAnswers()}',
                                        CURRENT_TIMESTAMP)");
            if ($insert_answers) {

                if ($_POST['sendMeAnEmail']) {
                    $this->sendEmail();
                }

                if ($_POST['newsletter'] === 1) {
                    // DOdaj do listy newsletterowej
                    // Mailchimp API
                }

                // Wywalamy komuś listę piw
                $algorithm = new Algorithm();
                $styles = $algorithm->picker();

                // Wrzutka wybranych stylów do bazy ze stylami
                // Insert

                return '';
            } else {
                return '';
            }
        } else {
            return '';
        }


    }

    // Pokazuje style z ostatniej wizyty
    public function showRecentlyPickedStyles() {

    }

    // 5 najczęściej wybieranych stylów
    public function showMostPickedStyles() {

        // Musi być tabela odkładająca wybrane użytkownikom style (zliczanie - jak logi)
        $mostly_picked = DB::select('SELECT id FROM styles GROUP BY count(id) AS mostlypicked ORDER BY mostlypicked DESC LIMIT 3;');


    }

    private function error(string $message) : array {

        // Funkcja do zliczania i złączania errorów

    }

    public function showErrors() {
        if ($errors && !empty($errorMessage)) {
            // Przekaż błedy do widoku
        }
    }


}