<?php

namespace App\Http\Controllers;

use App\Models\Tla;
use App\Models\TlaSuggestion;
use Illuminate\Http\Request;

class TlaController extends Controller
{
    public function session_flush(Request $request, string $language)
    {
        $session = $request->session();
        if ($session->get('date-'.$language, NULL) != date('Y-m-d'))
        {
            $session->forget('guesses-'.$language);
            $session->forget('tla-'.$language);
            $session->forget('correct-'.$language);
            $session->forget('review-'.$language);
            $session->put('tla-array-'.$language, ['', '', '']);
            $session->put('date-'.$language, date('Y-m-d'));
        }
    }

    public function fetch_tla(Request $request, ?string $language = 'en')
    {
        $allowedLanguages = array('hu', 'en');
        if ( !in_array($language, $allowedLanguages) ) $language = 'en';

        $tla = Tla::GetCurrentTla($language);

        if ($tla == NULL) return response()->json([ 'no_tla' => true ]);

        $this->session_flush($request, $language);

        $session = $request->session();

        return response()->json([
            'hint' => $tla->hint,
            'guesses' => $session->get('guesses-'.$language, []),
            'date' => $session->get('date-'.$language),
            'tla' => $session->get('tla-'.$language) == $tla->acronym ? $tla->acronym : NULL,
            'context' => $session->get('tla-'.$language) == $tla->acronym ? $tla->context : NULL,
            'submitter' => $tla->submitter,
            'correct' => $session->get('correct-'.$language),
            'tla_array' => ['','',''],
        ]);
    } 

    public function check_tla(Request $request, ?string $language = 'en')
    {
        $request->validate([
            'guess' => 'required|array|size:3',
        ]);
        $this->session_flush($request, $language);
        $tla_object = Tla::GetCurrentTla($language);
        
        $session = $request->session();

        $tla = explode(' ', strtolower($tla_object->acronym));

        $guess_array = $request->all()['guess'];
        for ($i = 0; $i<3; $i++) {
           $guess_array[$i] = strtolower($guess_array[$i]);
        }

        $proposal = [];

        for ($i = 0; $i < 3; $i++) {
            for ($j = 0; $j < 3; $j++) {
                if ( $guess_array[$j] == $tla[$i] ) {
                    $proposal[$i][$j] = $i-$j != 0 ? 3 : 4;
                } 
                else if ( $guess_array[$j][0] == $tla[$i][0] ) {
                    $proposal[$i][$j] = $i-$j != 0 ? 1 : 2;
                }
                else $proposal[$i][$j] = 0;
            }

            if ($proposal[$i][0] <= $proposal[$i][1] || $proposal[$i][0] <= $proposal[$i][2]) $proposal[$i][0] = 0;
            if ($proposal[$i][1] <= $proposal[$i][2] || $proposal[$i][1] <= $proposal[$i][0]) $proposal[$i][1] = 0;
            if ($proposal[$i][2] <= $proposal[$i][0] || $proposal[$i][2] <= $proposal[$i][1]) $proposal[$i][2] = 0;
        }

        for ($i = 0; $i < 3; $i++) {
            array_push($guess_array, max($proposal[0][$i], $proposal[1][$i], $proposal[2][$i]));
        }

        $score = 0;

        for ($i = 0; $i<3; $i++) {
           $guess_array[$i] = ucfirst($guess_array[$i]);
           $score += $guess_array[$i + 3];
        }

        $session->push('guesses-'.$language, $guess_array);
        $guesses = $session->get('guesses-'.$language, NULL);

        if ($score == 12 || count($guesses) == env('MAX_GUESSES', 10)) {
            $session->put('tla-'.$language, $tla_object->acronym);
            if ($score == 12) $session->put('correct-'.$language, true);
        }

        $tla_array = $session->get('tla-array-'.$language);

        for ($i = 0; $i < 3; $i++) {
            if ($tla_array[$i] == "" && $guess_array[$i + 3] == 2) $tla_array[$i] = $tla[$i];
        }

        $session->put('tla-array-'.$language, $tla_array);

        return response()->json([
            'guesses' => $guesses,
            'date' => $session->get('date'),
            'tla' => $session->get('tla-'.$language) == $tla_object->acronym ? $tla_object->acronym : NULL,
            'context' => $session->get('tla-'.$language) == $tla_object->acronym ? $tla_object->context : NULL,
            'score' => $score,
            'correct' => $session->get('correct-'.$language),
            'tla_array' => $tla_array,
        ]);
    }

    public function suggestion(Request $request, ?String $language = "en") {
        $request->validate([
            'acronym' => 'required',
            'hint' => 'required',
            'context' => 'required',
        ]);

        $requestData = $request->input();
        $tla = new TlaSuggestion($requestData);

        $tla->save();

        return response($tla);
    }

    public function review(Request $request, String $language, int $type) {
        $session = $request->session();
        if ($session->get('correct-'.$language) == true) {
            $current = $session->get('review-'.$language);
            $tla = Tla::GetCurrentTla($language);

            if ($type != 2) {
                if ($current == $type) {
                    if ($current == 1) $tla->likes--;
                    else if ($current == -1) $tla->dislikes--;
                    $type = 2;
                } else {
                    if ($current == 1) $tla->likes--;
                    else if ($current == -1) $tla->dislikes--;

                    if ($type == 1) $tla->likes++;
                    else if ($type == -1) $tla->dislikes++;
                } 
                $tla->save();
                $session->put('review-'.$language, $type);
            } else $type = $current;

            return response()->json([
                'likes' => $tla->likes,
                'dislikes' => $tla->dislikes,
                'current' => $type,
            ]);
        }

        else return response(null, 403);
        
    }
}