<?php

declare(strict_types=1);

namespace App\Services\Runbooks;

use Illuminate\Validation\ValidationException;

final readonly class FindingsLifecycleBackfillScope
{
    public const string MODE_ALL_TENANTS = 'all_tenants';

    public const string MODE_SINGLE_TENANT = 'single_tenant';

    private function __construct(
        public string $mode,
        public ?int $tenantId,
    ) {}

    public static function allTenants(): self
    {
        return new self(
            mode: self::MODE_ALL_TENANTS,
            tenantId: null,
        );
    }

    public static function singleTenant(int $tenantId): self
    {
        $tenantId = (int) $tenantId;

        if ($tenantId <= 0) {
            throw ValidationException::withMessages([
                'scope.tenant_id' => 'Select a valid tenant.',
            ]);
        }

        return new self(
            mode: self::MODE_SINGLE_TENANT,
            tenantId: $tenantId,
        );
    }

    /**
     * @param  array<string, mixed>  $data
     */
    public static function fromArray(array $data): self
    {
        $mode = trim((string) ($data['mode'] ?? ''));

        if ($mode === '' || $mode === self::MODE_ALL_TENANTS) {
            return self::allTenants();
        }

        if ($mode !== self::MODE_SINGLE_TENANT) {
            throw ValidationException::withMessages([
                'scope.mode' => 'Select a valid scope mode.',
            ]);
        }

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

        if (! is_numeric($tenantId)) {
            throw ValidationException::withMessages([
                'scope.tenant_id' => 'Select a tenant.',
            ]);
        }

        return self::singleTenant((int) $tenantId);
    }

    public function isAllTenants(): bool
    {
        return $this->mode === self::MODE_ALL_TENANTS;
    }

    public function isSingleTenant(): bool
    {
        return $this->mode === self::MODE_SINGLE_TENANT;
    }
}
