<?php

namespace App\Services\Domain;

use App\Models\Domain;
use App\Models\DomainOrder;
use App\Models\RcServiceOrder;

class DomainRegistryService
{
    /**
     * Create or update the unified domain registry entry for a registrar purchase.
     */
    public function recordPurchasedDomain(
        int $userId,
        string $host,
        string $registrar,
        ?string $registrarOrderId = null,
        bool $verified = true,
        array $meta = [],
    ): Domain {
        $host = strtolower(trim($host));

        $existing = Domain::query()->where('host', $host)->first();

        $verificationMeta = array_merge(
            (array) ($existing?->verification_meta ?? []),
            $meta,
            array_filter([
                'registrar' => $registrar,
                'registrar_order_id' => $registrarOrderId,
                'registered_at' => $verified ? now()->toIso8601String() : null,
            ]),
        );

        $attributes = [
            'user_id' => $existing?->user_id ?: $userId,
            'host' => $host,
            'type' => $existing?->type ?: 'custom',
            'source' => $this->resolveSource($existing),
            'onboarding_mode' => $existing?->onboarding_mode ?: Domain::MODE_RESELLER_AUTO,
            'status' => $verified ? 'verified' : ($existing?->status ?: 'pending'),
            'onboarding_state' => $verified
                ? Domain::STATE_ACTIVE
                : ($existing?->onboarding_state ?: Domain::STATE_PENDING_NS),
            'registrar' => $registrar ?: $existing?->registrar,
            'registrar_order_id' => $registrarOrderId ?: $existing?->registrar_order_id,
            'verified_at' => $verified ? ($existing?->verified_at ?: now()) : $existing?->verified_at,
            'verification_meta' => $verificationMeta,
        ];

        if ($existing) {
            $existing->update($attributes);

            return $existing->fresh();
        }

        return Domain::create($attributes);
    }

    public function recordFromDomainOrder(DomainOrder $order, bool $verified = true): Domain
    {
        if (! $order->user_id) {
            throw new \InvalidArgumentException('Domain order is missing user_id.');
        }

        return $this->recordPurchasedDomain(
            $order->user_id,
            $order->domain_name,
            (string) ($order->registrar ?: DomainOrder::REGISTRAR_DYNADOT),
            $order->registrar_order_id ? (string) $order->registrar_order_id : null,
            $verified,
            [
                'domain_order_id' => $order->id,
                'order_type' => $order->order_type,
            ],
        );
    }

    public function recordFromRcServiceOrder(RcServiceOrder $order, bool $verified = false): ?Domain
    {
        if (! $order->user_id || ! filled($order->domain_name)) {
            return null;
        }

        if (! in_array($order->order_type, [
            RcServiceOrder::TYPE_DOMAIN_REGISTRATION,
            RcServiceOrder::TYPE_DOMAIN_TRANSFER,
        ], true)) {
            return null;
        }

        return $this->recordPurchasedDomain(
            $order->user_id,
            $order->domain_name,
            DomainOrder::REGISTRAR_RESELLERCLUB,
            $order->rc_order_id ? (string) $order->rc_order_id : null,
            $verified,
            [
                'rc_service_order_id' => $order->id,
                'order_type' => $order->order_type,
            ],
        );
    }

    public function markVerified(string $host): ?Domain
    {
        $domain = Domain::query()->where('host', strtolower(trim($host)))->first();

        if (! $domain) {
            return null;
        }

        $domain->update([
            'status' => 'verified',
            'onboarding_state' => Domain::STATE_ACTIVE,
            'verified_at' => $domain->verified_at ?: now(),
        ]);

        return $domain->fresh();
    }

    private function resolveSource(?Domain $existing): string
    {
        if (! $existing) {
            return 'purchased';
        }

        $source = (string) ($existing->source ?: '');

        if (in_array($source, ['website', 'hosting', 'email', 'hosting_email', 'website_email'], true)) {
            return $source;
        }

        return 'purchased';
    }
}