﻿// ----------------------------------------------------------------------------------
//
// Copyright Microsoft Corporation
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// ----------------------------------------------------------------------------------

using System.Collections.Generic;
using System.Linq;
using System.Management.Automation;
using Microsoft.Azure.Commands.DataLakeStore.Models;

namespace Microsoft.Azure.Commands.DataLakeStore
{
    [Cmdlet(VerbsCommon.Get, "AzureRmDataLakeStoreChildItem"), OutputType(typeof (IEnumerable<DataLakeStoreItem>))]
    public class GetAzureDataLakeStoreChildItem : DataLakeStoreFileSystemCmdletBase
    {
        [Parameter(ValueFromPipelineByPropertyName = true, Position = 0, Mandatory = true,
            HelpMessage = "The Data Lake Store account to execute the filesystem operation in")]
        [ValidateNotNullOrEmpty]
        [Alias("AccountName")]
        public string Account { get; set; }

        [Parameter(ValueFromPipelineByPropertyName = true, Position = 0, Mandatory = true,
            HelpMessage =
                "The path in the specified Data Lake account that should be retrieve. Can be a file or folder " +
                "In the format '/folder/file.txt', " +
                "where the first '/' after the DNS indicates the root of the file system.")]
        [ValidateNotNull]
        public DataLakeStorePathInstance Path { get; set; }

        public override void ExecuteCmdlet()
        {
            List<DataLakeStoreItem> toReturn =
                DataLakeStoreFileSystemClient.GetFileStatuses(Path.TransformedPath, Account)
                    .FileStatus.Select(element => new DataLakeStoreItem(element))
                    .ToList();

            WriteObject(toReturn, true);
        }
    }
}