<?php

namespace common\models;

use common\components\ActiveRecord;
use common\helpers\GuestDeclarationDraftStatus;
use Yii;

/**
 * Durable state for an unauthenticated registration order awaiting payment.
 */
class GuestDeclarationDraft extends ActiveRecord
{
    public static function tableName()
    {
        return '{{%GUEST_DECLARATION_DRAFT}}';
    }

    public function rules()
    {
        return [
            [['ORDER_SN', 'ACCESS_TOKEN_HASH', 'PAYLOAD', 'ORDER_SNAPSHOT', 'STATUS', 'PAY_AMOUNT', 'CURRENCY', 'CREATED_AT', 'EXPIRES_AT'], 'required'],
            [['PAYLOAD', 'ORDER_SNAPSHOT', 'PAYMENT_NOTE'], 'string'],
            [['PAY_AMOUNT'], 'number'],
            [['CREATED_AT', 'EXPIRES_AT', 'PAID_AT', 'COMPLETED_AT'], 'integer'],
            [['STATUS'], 'in', 'range' => GuestDeclarationDraftStatus::all()],
            [['ORDER_SN'], 'string', 'max' => 32],
            [['ACCESS_TOKEN_HASH'], 'string', 'max' => 64],
            [['CURRENCY'], 'string', 'max' => 8],
            [['PAYMENT_REFERENCE'], 'string', 'max' => 128],
            [['USER_ID'], 'string', 'max' => 32],
            [['ORDER_SN'], 'unique'],
            [['ACCESS_TOKEN_HASH'], 'unique'],
            [['PAYMENT_REFERENCE'], 'unique'],
        ];
    }

    public function transitionTo(string $newStatus): bool
    {
        if (!GuestDeclarationDraftStatus::canTransition($this->STATUS, $newStatus)) {
            $this->addError('STATUS', 'Invalid guest declaration draft status transition.');
            return false;
        }

        $this->STATUS = $newStatus;
        return $this->save(false, ['STATUS', 'UPDATED_AT']);
    }

    public static function claimForProcessing(string $orderSn): bool
    {
        return self::updateAll(
            ['STATUS' => GuestDeclarationDraftStatus::PROCESSING, 'UPDATED_AT' => time()],
            [
                'AND',
                ['ORDER_SN' => $orderSn],
                ['STATUS' => GuestDeclarationDraftStatus::PENDING_PAYMENT],
                ['>', 'EXPIRES_AT', time()],
            ]
        ) === 1;
    }

    public function accessTokenMatches(string $accessToken): bool
    {
        return $accessToken !== '' && hash_equals($this->ACCESS_TOKEN_HASH, hash('sha256', $accessToken));
    }

    public function isExpired(?int $now = null): bool
    {
        return GuestDeclarationDraftStatus::isExpired((int) $this->EXPIRES_AT, $now);
    }

    public function getPayload(): array
    {
        $payload = json_decode($this->PAYLOAD, true);
        return is_array($payload) ? $payload : [];
    }

    public function getOrderSnapshot(): array
    {
        $snapshot = json_decode($this->ORDER_SNAPSHOT, true);
        return is_array($snapshot) ? $snapshot : [];
    }
}