using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;
using Tiku.Application.Content;
using Tiku.Application.Security;
using Tiku.Domain.Tenancy;
using Tiku.Infrastructure.Persistence;

namespace Tiku.Infrastructure.ContentV2;

internal sealed class PlatformContentActorResolver(ITenantExecutionScope tenantExecutionScope)
    : IPlatformContentActorResolver
{
    public Task<ContentAuthorActor> ResolveAsync(
        Guid userId,
        CancellationToken cancellationToken = default)
    {
        return tenantExecutionScope.ExecuteAsync(
            new SystemScopeRequest(
                null,
                SystemScopeCallerType.Platform,
                nameof(PlatformContentActorResolver),
                "Resolve the single platform-owned V2 content owner",
                Guid.NewGuid().ToString("N"),
                true),
            async (provider, token) =>
            {
                var tenancy = provider.GetRequiredService<ITenancyPersistence>();
                var ownerIds = await tenancy.Tenants.AsNoTracking()
                    .Where(item => item.Mode == TenantMode.PlatformOwned && item.Status == TenantStatus.Active)
                    .Select(item => item.Id)
                    .Take(2)
                    .ToArrayAsync(token);
                if (ownerIds.Length != 1)
                    throw new ContentV2Exception(
                        "platform_content_owner_invalid",
                        "Exactly one active platform content owner is required.");
                return new ContentAuthorActor(ownerIds[0], userId);
            },
            cancellationToken);
    }
}