<?php

namespace humhub\modules\animal_management\notifications;

use humhub\libs\Html;
use humhub\modules\notification\components\BaseNotification;
use humhub\modules\space\models\Space;
use Yii;
use yii\helpers\Json;
use yii\helpers\Url;

class TransferStatusNotification extends BaseNotification
{
    public $moduleId = 'animal_management';
    public $requireSource = false;
    public $requireOriginator = false;

    public string $animalName = '';
    public string $fromSpaceName = '';
    public string $toSpaceName = '';
    public string $spaceGuid = '';
    public string $eventType = '';
    public string $details = '';

    public function category()
    {
        return new TransferNotificationCategory();
    }

    public function getUrl()
    {
        $eventType = $this->payloadString('eventType', $this->eventType);
        $spaceGuid = $this->payloadString('spaceGuid', $this->spaceGuid);
        $anchor = static::eventAnchor($eventType);
        $space = Space::findOne(['guid' => $spaceGuid]);
        if ($space instanceof Space) {
            return $space->createUrl('/animal_management/animals/index') . '#' . $anchor;
        }

        return Url::to(['/animal_management/animals/index', 'sguid' => $spaceGuid]) . '#' . $anchor;
    }

    public function html()
    {
        $animalName = $this->payloadString('animalName', $this->animalName);
        $eventType = $this->payloadString('eventType', $this->eventType);
        $details = $this->payloadString('details', $this->details);

        $params = [
            'animalName' => Html::tag('strong', Html::encode($animalName)),
            'status' => Html::encode(static::statusLabel($eventType)),
        ];

        if ($this->originator) {
            $params['displayName'] = Html::tag('strong', Html::encode($this->originator->displayName));
            $message = Yii::t('AnimalManagementModule.base', '{displayName} {status} the transfer of {animalName}.', $params);
        } else {
            $message = Yii::t('AnimalManagementModule.base', '{status} the transfer of {animalName}.', $params);
        }

        if ($details !== '') {
            $message .= ' ' . Html::encode($details);
        }

        return $message;
    }

    public function getMailSubject()
    {
        $animalName = $this->payloadString('animalName', $this->animalName);
        $eventType = $this->payloadString('eventType', $this->eventType);

        return Yii::t('AnimalManagementModule.base', 'Animal transfer update: {animalName} ({status})', [
            'animalName' => $animalName,
            'status' => static::statusLabel($eventType),
        ]);
    }

    public function __serialize(): array
    {
        $data = parent::__serialize();
        $data['animalName'] = $this->animalName;
        $data['fromSpaceName'] = $this->fromSpaceName;
        $data['toSpaceName'] = $this->toSpaceName;
        $data['spaceGuid'] = $this->spaceGuid;
        $data['eventType'] = $this->eventType;
        $data['details'] = $this->details;
        $data['payload'] = $this->payload;

        return $data;
    }

    public function __unserialize($unserializedArr)
    {
        parent::__unserialize($unserializedArr);

        $this->animalName = (string)($unserializedArr['animalName'] ?? '');
        $this->fromSpaceName = (string)($unserializedArr['fromSpaceName'] ?? '');
        $this->toSpaceName = (string)($unserializedArr['toSpaceName'] ?? '');
        $this->spaceGuid = (string)($unserializedArr['spaceGuid'] ?? '');
        $this->eventType = (string)($unserializedArr['eventType'] ?? '');
        $this->details = (string)($unserializedArr['details'] ?? '');

        if (isset($unserializedArr['payload']) && is_array($unserializedArr['payload'])) {
            $this->payload = $unserializedArr['payload'];
        }
    }

    public static function statusLabel(string $eventType): string
    {
        switch ($eventType) {
            case 'accepted':
                return Yii::t('AnimalManagementModule.base', 'Accepted');
            case 'declined':
                return Yii::t('AnimalManagementModule.base', 'Declined');
            case 'completed':
                return Yii::t('AnimalManagementModule.base', 'Completed');
            case 'cancelled':
                return Yii::t('AnimalManagementModule.base', 'Cancelled');
            default:
                return Yii::t('AnimalManagementModule.base', 'Updated');
        }
    }

    private static function eventAnchor(string $eventType): string
    {
        switch ($eventType) {
            case 'requested':
            case 'cancelled':
                return 'incoming-transfers';
            case 'accepted':
            case 'declined':
            case 'completed':
                return 'outgoing-transfers';
            default:
                return 'outgoing-transfers';
        }
    }

    private function payloadString(string $key, string $fallback = ''): string
    {
        if (is_array($this->payload) && array_key_exists($key, $this->payload)) {
            return trim((string)$this->payload[$key]);
        }

        if ($this->record !== null && !empty($this->record->payload)) {
            try {
                $decoded = Json::decode((string)$this->record->payload);
                if (is_array($decoded)) {
                    $this->payload = $decoded;
                    if (array_key_exists($key, $decoded)) {
                        return trim((string)$decoded[$key]);
                    }
                }
            } catch (\Throwable $e) {
                // Fall back to explicit property values when payload is unavailable.
            }
        }

        return trim($fallback);
    }
}