<?php

declare(strict_types=1);

namespace App\Support\Navigation;

use Illuminate\Http\Request;

final readonly class CanonicalNavigationContext
{
    /**
     * @param  array<string, mixed>  $filterPayload
     */
    public function __construct(
        public string $sourceSurface,
        public string $canonicalRouteName,
        public ?int $tenantId = null,
        public ?string $backLinkLabel = null,
        public ?string $backLinkUrl = null,
        public array $filterPayload = [],
    ) {}

    public static function fromRequest(Request $request): ?self
    {
        $payload = $request->query('nav');

        if (! is_array($payload)) {
            return null;
        }

        $sourceSurface = $payload['source_surface'] ?? null;
        $canonicalRouteName = $payload['canonical_route_name'] ?? null;

        if (! is_string($sourceSurface) || $sourceSurface === '' || ! is_string($canonicalRouteName) || $canonicalRouteName === '') {
            return null;
        }

        $tenantId = $payload['tenant_id'] ?? null;

        return new self(
            sourceSurface: $sourceSurface,
            canonicalRouteName: $canonicalRouteName,
            tenantId: is_numeric($tenantId) ? (int) $tenantId : null,
            backLinkLabel: is_string($payload['back_label'] ?? null) ? (string) $payload['back_label'] : null,
            backLinkUrl: is_string($payload['back_url'] ?? null) ? (string) $payload['back_url'] : null,
            filterPayload: [],
        );
    }

    /**
     * @return array<string, mixed>
     */
    public function toQuery(): array
    {
        $query = $this->filterPayload;
        $query['nav'] = array_filter([
            'source_surface' => $this->sourceSurface,
            'canonical_route_name' => $this->canonicalRouteName,
            'tenant_id' => $this->tenantId,
            'back_label' => $this->backLinkLabel,
            'back_url' => $this->backLinkUrl,
        ], static fn (mixed $value): bool => $value !== null && $value !== '');

        return $query;
    }
}
