using System;

using System.Net.Http;

using Raven.Client.Documents.Conventions;

using Raven.Client.Http;

using Raven.Client.Json.Converters;

using Raven.Client.Util;

using Sparrow.Json;



namespace Raven.Client.Documents.Operations.Migration

{

    public class SqlMigrationSchemaOperation : IMaintenanceOperation<SqlMigrationSchemaResult>

    {

        private readonly string _connectionStringName;



        public SqlMigrationSchemaOperation(string connectionStringName)

        {

            if (string.IsNullOrWhiteSpace(connectionStringName))

                throw new ArgumentNullException(nameof(connectionStringName));



            _connectionStringName = connectionStringName;

        }



        public RavenCommand<SqlMigrationSchemaResult> GetCommand(DocumentConventions conventions, JsonOperationContext context)

        {

            return new SqlMigrationSchemaCommand(_connectionStringName);

        }



        private class SqlMigrationSchemaCommand : RavenCommand<SqlMigrationSchemaResult>

        {

            protected readonly string ConnectionStringName;

            public override bool IsReadRequest => false;



            public SqlMigrationSchemaCommand(string connectionStringName)

            {

                if (string.IsNullOrWhiteSpace(connectionStringName))

                    throw new ArgumentNullException(nameof(connectionStringName));



                ConnectionStringName = connectionStringName;

            }



            public override HttpRequestMessage CreateRequest(JsonOperationContext ctx, ServerNode node, out string url)

            {

                url = $"{node.Url}/databases/{node.Database}/admin/sql-migration/schema?{nameof(ConnectionStringName)}={ConnectionStringName}";



                var request = new HttpRequestMessage

                {

                    Method = HttpMethods.Get

                };



                return request;

            }



            public override void SetResponse(JsonOperationContext context, BlittableJsonReaderObject response, bool fromCache)

            {

                if (response == null)

                    return;



                Result = JsonDeserializationClient.SqlSchemaResult(response);

            }

        }

    }

}