<?php

declare(strict_types=1);

namespace openvk\Web\Models\Entities;

use Chandler\Database\DatabaseConnection as DB;
use openvk\Web\Models\Repositories\Gifts;
use openvk\Web\Models\RowModel;
use Transliterator;

class GiftCategory extends RowModel
{
    protected $tableName = "gift_categories";

    private function getLocalization(string $language): object
    {
        return $this->getRecord()
            ->related("gift_categories_locales.category")
            ->where("language", $language);
    }

    private function createLocalizationIfNotExists(string $language): void
    {
        if (!is_null($this->getLocalization($language)->fetch())) {
            return;
        }

        DB::i()->getContext()->table("gift_categories_locales")->insert([
            "category"    => $this->getId(),
            "language"    => $language,
            "name"        => "Sample Text",
            "description" => "Sample Text",
        ]);
    }

    public function getSlug(): string
    {
        return str_replace("ʹ", "-", Transliterator::createFromRules(
            ":: Any-Latin;"
            . ":: NFD;"
            . ":: [:Nonspacing Mark:] Remove;"
            . ":: NFC;"
            . ":: [:Punctuation:] Remove;"
            . ":: Lower();"
            . "[:Separator:] > '-'"
        )->transliterate($this->getName()));
    }

    public function getThumbnailURL(): string
    {
        $primeGift = iterator_to_array($this->getGifts(1, 1))[0];
        $serverUrl = ovk_scheme(true) . $_SERVER["SERVER_NAME"];
        if (!$primeGift) {
            return "$serverUrl/assets/packages/static/openvk/img/camera_200.png";
        }

        return $primeGift->getImage(Gift::IMAGE_URL);
    }

    public function getName(string $language = "_", bool $returnNull = false): ?string
    {
        $loc = $this->getLocalization($language)->fetch();
        if (!$loc) {
            if ($returnNull) {
                return null;
            }

            return $language === "_" ? "Unlocalized" : $this->getName();
        }

        return $loc->name;
    }

    public function getDescription(string $language = "_", bool $returnNull = false): ?string
    {
        $loc = $this->getLocalization($language)->fetch();
        if (!$loc) {
            if ($returnNull) {
                return null;
            }

            return $language === "_" ? "Unlocalized" : $this->getDescription();
        }

        return $loc->description;
    }

    public function getGifts(int $page = -1, ?int $perPage = null, &$count = nullptr): \Traversable
    {
        $gifts = $this->getRecord()->related("gift_relations.category");
        if ($page !== -1) {
            $count = $gifts->count();
            $gifts = $gifts->page($page, $perPage ?? OPENVK_DEFAULT_PER_PAGE);
        }

        foreach ($gifts as $rel) {
            yield (new Gifts())->get($rel->gift);
        }
    }

    public function isMagical(): bool
    {
        return !is_null($this->getRecord()->autoquery);
    }

    public function hasGift(Gift $gift): bool
    {
        $rels = $this->getRecord()->related("gift_relations.category");

        return $rels->where("gift", $gift->getId())->count() > 0;
    }

    public function addGift(Gift $gift): void
    {
        if ($this->hasGift($gift)) {
            return;
        }

        DB::i()->getContext()->table("gift_relations")->insert([
            "category" => $this->getId(),
            "gift"     => $gift->getId(),
        ]);
    }

    public function removeGift(Gift $gift): void
    {
        if (!$this->hasGift($gift)) {
            return;
        }

        DB::i()->getContext()->table("gift_relations")->where([
            "category" => $this->getId(),
            "gift"     => $gift->getId(),
        ])->delete();
    }

    public function setName(string $language, string $name): void
    {
        $this->createLocalizationIfNotExists($language);
        $this->getLocalization($language)->update([
            "name" => $name,
        ]);
    }

    public function setDescription(string $language, string $description): void
    {
        $this->createLocalizationIfNotExists($language);
        $this->getLocalization($language)->update([
            "description" => $description,
        ]);
    }

    public function setAutoQuery(?array $query = null): void
    {
        if (is_null($query)) {
            $this->stateChanges("autoquery", null);
            return;
        }

        $allowedColumns = ["price", "usages"];
        if (array_diff_key($query, array_flip($allowedColumns))) {
            throw new \LogicException("Invalid query");
        }

        $this->stateChanges("autoquery", serialize($query));
    }
}