<?php

declare(strict_types=1);

namespace app\common\service\pharmacy;

final class EjPharmacyShipmentPolicy
{
    /** @param array<string,mixed> $payload */
    public static function isShippedEvent(array $payload): bool
    {
        return strtoupper(trim((string) ($payload['event_type'] ?? ''))) === 'ORDER_SHIPPED'
            || strtoupper(trim((string) ($payload['status'] ?? ''))) === 'SHIPPED';
    }

    /** @param array<string,mixed> $payload */
    public static function isWorkflowStepEvent(array $payload): bool
    {
        return strtoupper(trim((string) ($payload['event_type'] ?? ''))) === 'WORKFLOW_STEP_COMPLETED';
    }

    /** @param array<string,mixed> $payload */
    public static function isCompletedEvent(array $payload): bool
    {
        // A workflow node (including the final “ship” node) is only a
        // pharmacy-process update. It must not close the ZYT business order.
        return !self::isWorkflowStepEvent($payload)
            && strtoupper(trim((string) ($payload['status'] ?? ''))) === 'COMPLETED';
    }

    /** @param array<string,mixed> $payload */
    public static function isRejectedEvent(array $payload): bool
    {
        return in_array(strtoupper(trim((string) ($payload['event_type'] ?? ''))), [
            'REVIEW_REJECTED',
            'INVENTORY_SHORTAGE',
        ], true)
            || strtoupper(trim((string) ($payload['status'] ?? ''))) === 'REJECTED'
            || strtoupper(trim((string) ($payload['review_status'] ?? ''))) === 'REJECTED';
    }

    /** @param array<string,mixed> $payload */
    public static function nextFulfillmentStatus(
        int $currentStatus,
        array $payload,
        ?int $rollbackStatus = null
    ): int
    {
        if (self::isRejectedEvent($payload)) {
            // EJ rejection means the pharmacy did not accept the submission;
            // it must not turn the ZYT business order into a customer refusal.
            // Restore the status captured immediately before the submission.
            return $rollbackStatus !== null && $rollbackStatus > 0
                ? $rollbackStatus
                : ($currentStatus === 9 ? 2 : $currentStatus);
        }
        if (self::isWorkflowStepEvent($payload)) {
            // EJ workflow callbacks are informational nodes. Keep the ZYT
            // fulfillment status unchanged; only explicit shipment/completion
            // events may advance it.
            return $currentStatus;
        }
        if (self::isShippedEvent($payload) && in_array($currentStatus, [1, 2], true)) {
            return 5;
        }
        if (self::isCompletedEvent($payload) && in_array($currentStatus, [1, 2, 5], true)) {
            return 3;
        }

        return $currentStatus;
    }
}