using xCommons.Extensions;
using xDataService.Models;

namespace xDataService.Extensions
{
    public static class XRepositoryDescriptorExtensions
    {
        /// <summary>
        /// Validate a Descriptor ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static bool IsValid(this XRepositoryDescriptor source)
        {
            var result =
                !source.IsNull() &&
                !source.Key.IsNull() &&
                !source.Entity.IsNull();

            //
            return result;
        }

        /// <summary>
        /// Check a Descriptor Has Events Service or not ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static bool HasEvents(this XRepositoryDescriptor source)
        {
            //
            var result =
                source.IsValid() &&
                !source.EventsService.IsNull() &&
                !source.EventsImplementation.IsNull();

            //
            return result;
        }

        /// <summary>
        /// Check a Descriptor Has EF Core Context or not ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static bool HasContext(this XRepositoryDescriptor source)
        {
            //
            var result =
                source.IsValid() &&
                !source.Context.IsNull();

            //
            return result;
        }

        /// <summary>
        /// Check a Descriptor Has GraphQL Support or not ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static bool HasGraphSupport(this XRepositoryDescriptor source)
        {
            //
            var result =
                source.IsValid() &&
                !source.GraphType.IsNull() &&
                !source.GraphSchema.IsNull() &&
                !source.GraphTypeKey.IsNull() &&
                !source.GraphQueryService.IsNull() &&
                !source.GraphTypeHelperService.IsNull() &&
                !source.GraphQueryImplementation.IsNull() &&
                !source.GraphTypeHelperImplementation.IsNull();

            //
            return result;
        }

        /// <summary>
        /// Check a Descriptor Has Key Generator Service or not ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static bool HasKeyGenerator(this XRepositoryDescriptor source)
        {
            //
            var result =
                source.IsValid() &&
                !source.KeyGeneratorService.IsNull() &&
                !source.KeyGeneratorImplementation.IsNull();

            //
            return result;
        }

        /// <summary>
        /// Check a Descriptor Has Repository Service or not ...
        /// </summary>
        /// <param name="source"></param>
        /// <returns></returns>
        public static bool HasRepository(this XRepositoryDescriptor source)
        {
            //
            var result =
                source.IsValid() &&
                !source.RepositoryService.IsNull() &&
                !source.RepositoryImplementation.IsNull();

            //
            return result;
        }
    }
}