using xCommons.Extensions;
using xDataService.Configuration;
using xDataService.Interfaces;
using xModels.Base;

namespace xDataService.GraphQL
{
    public abstract class XBaseGraphQLTypeHelper : IXBaseGraphQLTypeHelper
    {
        //
        protected readonly XDataServiceConfiguration configuration;

        //
        public XBaseGraphQLTypeHelper(
            XDataServiceConfiguration configuration
        )
        {
            this.configuration = configuration;
        }

        public abstract string GetInQuerySingleName();

        public abstract string GetInQueryCollectionName();

        //
        #region Actions ...
        public virtual string GetCountName()
        {
            return string.Empty;
        }

        public virtual string GetExistsName()
        {
            return string.Empty;
        }

        public virtual string GetFindManyName()
        {
            return string.Empty;
        }

        public virtual string GetFindOneName()
        {
            return string.Empty;
        }

        public virtual string GetGraphQLPath(string baseGraphPath = null)
        {
            return string.Empty;
        }

        public virtual string GetQueryName()
        {
            return string.Empty;
        }
        #endregion
    }

    public abstract class XBaseGraphQLTypeHelper<TEntity, TKey> : XBaseGraphQLTypeHelper, IXBaseGraphQLTypeHelper<TEntity, TKey>
    where TEntity : XBaseEntity<TKey>
    {
        //
        public XBaseGraphQLTypeHelper(
            XDataServiceConfiguration configuration = null
        ) : base(configuration)
        { }

        //
        #region Actions ...
        public override string GetFindOneName()
        {
            return $"find{GetInQuerySingleName().ToNormalString().Capitalize()}";
        }

        public override string GetFindManyName()
        {
            return $"find{GetInQueryCollectionName().ToNormalString().Capitalize()}";
        }

        public override string GetQueryName()
        {
            return $"query{GetInQueryCollectionName().ToNormalString().Capitalize()}";
        }

        public override string GetCountName()
        {
            return $"count{GetInQueryCollectionName().ToNormalString().Capitalize()}";
        }

        public override string GetExistsName()
        {
            return $"exists{GetInQuerySingleName().ToNormalString().Capitalize()}";
        }

        public override string GetGraphQLPath(string baseGraphPath = null)
        {
            //
            baseGraphPath = baseGraphPath.IsNullOrEmpty() ?
                configuration.IsNull() || configuration.GraphQLBasePath.IsNullOrEmpty() ?
                "" :
                configuration.GraphQLBasePath :
                baseGraphPath;

            //
            var basePath = baseGraphPath
                .EndsWith("/") ?
                baseGraphPath
                .Substring(0, baseGraphPath.Length - 1) :
                baseGraphPath;

            //
            return $"{basePath}/{GetInQueryCollectionName().ToNormalString()}";
        }
        #endregion
    }
}