#region Copyright
/*
* Copyright © 2014-2016 NetApp, Inc. All Rights Reserved.
*
* CONFIDENTIALITY NOTICE: THIS SOFTWARE CONTAINS CONFIDENTIAL INFORMATION OF
* NETAPP, INC. USE, DISCLOSURE OR REPRODUCTION IS PROHIBITED WITHOUT THE PRIOR
* EXPRESS WRITTEN PERMISSION OF NETAPP, INC.
*/
#endregion

#region Using Directives

using System.ComponentModel;
using System.Management.Automation;
using SolidFire.Core;
using SolidFire.Element.Api;
using System.Management.Automation.Runspaces;
using System.Collections.Generic;
using System.Linq;
using SolidFire.Exceptions;
using SolidFire.Core.Helpers;
#endregion

namespace SolidFire.Volume.Remove
{
    /// <summary>
    ///  Used to delete one or more schedules, sorta. Actually it calls ModifySchedule and sets ToBeDeleted to true. The API doesn't support the immediate 
    ///  removal of a schedule but our CmdLet pattern requires us to supply a Remove* CmdLet. 
    /// </summary>
    
    [Cmdlet(VerbsCommon.Remove, "SFSchedule", SupportsShouldProcess = true, ConfirmImpact = ConfirmImpact.High)]
    public class RemoveSFSchedule : SFCmdlet
    {

        #region Private Data

        private Pipeline _pipeline;
        private List<long> _processedIDs;

        #endregion

        #region Parameters

        [Parameter(Position = 0, Mandatory = true, ValueFromPipeline = true, ValueFromPipelineByPropertyName = true, HelpMessage = "Schedule ID(s) to remove")]
        public long[] ScheduleID { get; set; }
        
        #endregion

        #region Cmdlet Overrides
        protected override void BeginProcessing()
        {
            base.BeginProcessing();
            CheckConnection(minVersionNumber: 8.0f);
            _processedIDs = new List<long>();
            _pipeline = Runspace.DefaultRunspace.CreateNestedPipeline();
        }

        protected override void ProcessRecord()
        {
            base.ProcessRecord();
            foreach (var id in ScheduleID)
            {
                var scheduleBeforeModify = getSchedule(id);
                scheduleBeforeModify.ToBeDeleted = true;

                var request = new ModifyScheduleRequest();
                request.Schedule = scheduleBeforeModify;

                var objsFromApi = SendRequest<ModifyScheduleResult>("ModifySchedule", request, throwTerminatingError: false);
                _processedIDs.Add(id);
            }
        }

        protected override void EndProcessing()
        {
            base.EndProcessing();
            if (_processedIDs.Count > 0)
            {
                var command = new Command("Get-SFSchedule");
                command.Parameters.Add("ScheduleID", _processedIDs);
                if (SFConnection != null)
                {
                    command.Parameters.Add("SFConnection", SFConnection);
                }
                else if (Target != null)
                {
                    command.Parameters.Add("Target", Target);
                }
                _pipeline.Commands.Add(command);
                WriteObject(_pipeline.Invoke(), true);
                _processedIDs.Clear();
            }
            _pipeline = null;
        }
        #endregion


        private Schedule getSchedule(long scheduleID)
        {
            var volPipeline = Runspace.DefaultRunspace.CreateNestedPipeline();
            var command = new Command("Get-SFSchedule");
            command.Parameters.Add("ScheduleID", scheduleID);
            if (SFConnection != null)
            {
                command.Parameters.Add("SFConnection", SFConnection);
            }
            else if (Target != null)
            {
                command.Parameters.Add("Target", Target);
            }
            volPipeline.Commands.Add(command);
            var psObj = volPipeline.Invoke().FirstOrDefault();
            volPipeline = null;

            if (psObj == null)
            {
                var message = string.Format("Unable to find Schedule with ID {0}. Cannot continue with Schedule modification.", scheduleID);
                var errRecord = new ErrorRecord(new RequestException(message), message, ErrorCategory.InvalidData, this);

                SolidFireUtilities.HandleError(errRecord, this, true);
            }
            return (Schedule)psObj.BaseObject;

        }
    }
}