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

namespace xDataService.GraphQL {
    public abstract class XBaseGraphQLTypeHelper<TEntity, TKey> : IXBaseGraphQLTypeHelper<TEntity, TKey>
        where TEntity : XBaseEntity<TKey> {
            //
            private readonly XDataServiceConfiguration configuration;

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

            //
            public abstract string GetInQueryCollectionName ();

            public abstract string GetInQuerySingleName ();

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

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

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

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

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

            public 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()}";
            }
        }
}