using Socialize.Infrastructure.Security;
namespace Socialize.Modules.ContentItems.Handlers;

public record ContentItemRevisionDto(
    Guid Id,
    Guid ContentItemId,
    int RevisionNumber,
    string RevisionLabel,
    string Title,
    string PublicationMessage,
    string PublicationTargets,
    string? Hashtags,
    string? ChangeSummary,
    Guid? CreatedByUserId,
    DateTimeOffset CreatedAt);

public class GetContentItemRevisionsHandler(
    AppDbContext dbContext,
    AccessScopeService accessScopeService)
    : EndpointWithoutRequest<IReadOnlyCollection<ContentItemRevisionDto>>
{
    public override void Configure()
    {
        Get("/api/content-items/{id}/revisions");
        Options(o => o.WithTags("Content Items"));
    }

    public override async Task HandleAsync(CancellationToken ct)
    {
        Guid id = Route<Guid>("id");

        ContentItem? item = await dbContext.ContentItems.SingleOrDefaultAsync(candidate => candidate.Id == id, ct);
        if (item is null)
        {
            await SendNotFoundAsync(ct);
            return;
        }

        if (!accessScopeService.CanReviewContent(User, item.WorkspaceId, item.ClientId, item.ProjectId))
        {
            await SendForbiddenAsync(ct);
            return;
        }

        List<ContentItemRevisionDto> revisions = await dbContext.ContentItemRevisions
            .Where(revision => revision.ContentItemId == id)
            .OrderByDescending(revision => revision.RevisionNumber)
            .Select(revision => new ContentItemRevisionDto(
                revision.Id,
                revision.ContentItemId,
                revision.RevisionNumber,
                revision.RevisionLabel,
                revision.Title,
                revision.PublicationMessage,
                revision.PublicationTargets,
                revision.Hashtags,
                revision.ChangeSummary,
                revision.CreatedByUserId,
                revision.CreatedAt))
            .ToListAsync(ct);

        await SendOkAsync(revisions, ct);
    }
}