using LiteCharms.Features.Shop.Postgres;

namespace LiteCharms.Features.Leads.Commands.Handlers;

public class UpdateLeadCommandHandler(IDbContextFactory<ShopDbContext> contextFactory) : IRequestHandler<UpdateLeadCommand, Result>
{
    public async ValueTask<Result> Handle(UpdateLeadCommand request, CancellationToken cancellationToken)
    {
        try
        {
            using var context = await contextFactory.CreateDbContextAsync(cancellationToken);

            var lead = await context.Leads.FirstOrDefaultAsync(l => l.Id == request.LeadId, cancellationToken);

            if (lead is null)
                return Result.Fail(new Error($"Lead with ID {request.LeadId} not found."));

            lead.Status = request.Status;

            return await context.SaveChangesAsync(cancellationToken) > 0
                ? Result.Ok()
                : Result.Fail(new Error($"Failed to update the lead {request.LeadId}."));
        }
        catch (Exception ex)
        {
            return Result.Fail(new Error(ex.Message).CausedBy(ex));
        }
    }
}