<?php

namespace modules\listings;

use Listings;
use Component;
use bff\db\options\Options;
use modules\listings\events\ItemClaim;

/**
 * Item claims component
 * @copyright Tamaranga
 */
class ItemClaims_ extends Component
{
    public const WITH_MESSAGE = 1024; # reason with description

    protected $counter_key = 'listings_items_claims';

    public function __construct()
    {
        $this->init();
    }

    /**
     * @return static
     */
    public static function i()
    {
        bff()->singletonIf('listings.item.claims', static::class);

        return bff('listings.item.claims');
    }

    /**
     * Claims predefined reasons list
     * @param string|null $lang
     * @return array
     */
    public function getReasons(?string $lang = null): array
    {
        return Options::getOptions('listings-item-claim-reasons', $lang ?? $this->locale->current());
    }

    /**
     * Add claim by user
     * @param int $itemId
     * @param int $userId
     * @param array $reasons claim reasons
     * @param string $message claim description
     * @param array $opts [messageMinimum, throttle]
     * @return bool
     */
    public function add($itemId, $userId, array $reasons, string $message = '', array $opts = [])
    {
        if (! $itemId) {
            $this->errors->reloadPage();
            return false;
        }
        $opts = $this->defaults($opts, [
            'throttle' => [],
            'messageMinimum' => 10,
        ]);

        $reason = array_sum($reasons);
        if (! $reason) {
            $this->errors->set(_t('item-claim', 'Specify the reason'));
            return false;
        }
        if ($reason & static::WITH_MESSAGE) {
            if ($opts['messageMinimum'] > 0 && (mb_strlen($message) < $opts['messageMinimum'])) {
                $this->errors->set(_t('item-claim', 'Describe the reason in more details'), 'comment');
                return false;
            }
        }
        if (! empty($opts['throttle'])) {
            $throttle = is_array($opts['throttle']) ? $opts['throttle'] : [];
            if ($this->tooManyRequests($throttle['actionKey'] ?? 'listings-item-claim', $throttle)) {
                return false;
            }
        }

        $claimId = Listings::model()->claimSave(0, [
            'reason'  => $reason,
            'message' => $message,
            'item_id' => $itemId,
            'user_id' => $userId,
        ]);
        if ($claimId > 0) {
            $this->counterUpdate(1);
            Listings::model()->itemSave($itemId, [
                'claims_cnt = claims_cnt + 1'
            ]);
            ItemClaim::dispatch($claimId, $itemId, $userId);
        }
        return true;
    }

    /**
     * Delete claim by admin
     * @param int $claimId
     * @param array $opts []
     * @return bool
     */
    public function delete($claimId, array $opts = [])
    {
        $success = Listings::model()->claimDelete($claimId);
        if ($success) {
            $this->counterUpdate(null);
        }

        return $success;
    }

    /**
     * View claim by admin
     * @param int $claimId
     * @param array $opts []
     * @return bool
     */
    public function view($claimId, array $opts = [])
    {
        $viewed = Listings::model()->claimSave($claimId, ['viewed' => 1]);
        if ($viewed) {
            $this->counterUpdate(null);
        }

        return $viewed;
    }

    /**
     * Build claim text (selected reasons + message)
     * @param int $reasons selected
     * @param string|null $message text
     * @return string
     */
    public function toText(int $reasons, ?string $message = null): string
    {
        if (! empty($reasons)) {
            $list = $this->getReasons();
            if (! empty($list)) {
                $text = [];
                foreach ($list as $k => $v) {
                    if ($k != self::WITH_MESSAGE && ($k & $reasons)) {
                        $text[] = $v;
                    }
                }
                if (($reasons & self::WITH_MESSAGE) && ! empty($message)) {
                    $text[] = $message;
                }
                return join(', ', $text);
            }
        }
        return '';
    }

    /**
     * Actualize total number of new (not viewed) claims
     * @param int|null $increment
     * @return void
     */
    public function counterUpdate(?int $increment)
    {
        if (is_null($increment)) {
            $count = Listings::model()->claimsListing(['viewed' => 0], true);
            $this->app->config()->save($this->counter_key, $count, true);
        } else {
            $this->app->config()->saveCount($this->counter_key, $increment, true);
        }
    }
}