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

namespace SolidFire.Cluster.Add
{
    /// <summary>
    /// 
    /// </summary>
    
    [Cmdlet(VerbsCommon.Add, "SFSnmpUsmUser", SupportsShouldProcess = true, ConfirmImpact = ConfirmImpact.None)]
    public class AddSFSnmpUsmUser : SFCmdlet
    {
        #region Private Data

        /// <summary>
        /// Member used to host a nested Pipeline for calling other CmdLets
        /// </summary>
        private Pipeline pipeline = null;

        #endregion

        #region Parameters

        /// <summary>
        /// The name of the user. Must contain at least one character, but no longer than 32 characters. No blank space.
        /// </summary>
        [Parameter(Position = 1, Mandatory = true, HelpMessage = "The name of the user. Must contain at least one character, but no longer than 32 characters. No blank space.")]
        public String Name { get; set; }

        /// <summary>
        /// rouser: read-only access.*, rwuser: for read-write access, rosys: for read-only access to a restricted set of system information.
        /// </summary>
        [Parameter(Position = 0, Mandatory = true, HelpMessage = "rouser: read-only access.*, rwuser: for read-write access, rosys: for read-only access to a restricted set of system information.")]
        [ValidatePattern(SolidFireValidations.UpperAndLowerCase)]
        [ValidateSet("rouser", "rwuser", "rosys", IgnoreCase = true)]
        public String Access { get; set; }

        /// <summary>
        /// The password of the user. Must be between 8 and 255 characters long (inclusive). No blanks allowed. Required if "secLevel" is "auth" or "priv."
        /// </summary>
        [Parameter(Position = 2, Mandatory = true, HelpMessage = "The password of the user. Must be between 8 and 255 characters long (inclusive). No blanks allowed. Required if 'secLevel' is 'auth' or 'priv.'")]
        public String Password { get; set; }

        /// <summary>
        /// The passphrase of the user. Must be between 8 and 255 characters long (inclusive). No blanks allowed. Required if "secLevel" is "priv."
        /// </summary>
        [Parameter(Position = 3, Mandatory = true, HelpMessage = "The passphrase of the user. Must be between 8 and 255 characters long (inclusive). No blanks allowed. Required if 'secLevel' is 'priv'.")]
        public String Passphrase { get; set; }

        /// <summary>
        /// noauth: no password or passphrase required. auth: a password is required for user access. priv: a password and passphrase is required for user access.
        /// </summary>
        [Parameter(Position = 4, Mandatory = true, HelpMessage = "'noauth': no password or passphrase required. 'auth': a password is required for user access. 'priv': a password and passphrase is required for user access.")]
        [ValidatePattern(SolidFireValidations.UpperAndLowerCase)]
        [ValidateSet("noauth", "auth", "priv", IgnoreCase = true)]
        public String SecLevel { get; set; }

        #endregion

        #region Cmdlet Overrides

        /// <summary>
        /// Make sure the connection is Oxygen or greater.
        /// Create a nested pipeline that can be written to after processing
        /// </summary>
        protected override void BeginProcessing()
        {
            base.BeginProcessing();
            CheckConnection(minVersionNumber: 8.0f);
            pipeline = Runspace.DefaultRunspace.CreateNestedPipeline();
            
        }

        /// <summary>
        /// After processing, invoke Get-SFSnmpACL to pass the latest into the pipeline.
        /// </summary>
        protected override void EndProcessing()
        {
            base.EndProcessing();
            var command = new Command("Get-SFSnmpInfo");
            pipeline.Commands.Add(command);
            // Send it to the pipline
            WriteObject(pipeline.Invoke(), true);
            pipeline = null;
        }

        /// <summary>
        /// Implementation for processing the execution of the cmdlet.
        /// </summary>
        protected override void ProcessRecord()
        {
            base.ProcessRecord();
            // Get the current TrapRecipients
            var objsFromAPI = SendRequest<GetSnmpInfoResult>("GetSnmpInfo");
            foreach (var obj in objsFromAPI)
            {
                var users = obj.Result.UsmUsers == null ? new List<SnmpV3UsmUser>() : obj.Result.UsmUsers.ToList();

                var user = new SnmpV3UsmUser();
                user.Access = Access;
                user.Name = Name;
                user.Passphrase = Passphrase;
                user.Password = Password;
                user.SecLevel = SecLevel;

                users.Add(user);

                // Assemble the parameters object
                var request = new SetSnmpInfoRequest();
                request.UsmUsers = users.ToArray();
                request.SnmpV3Enabled = true;
                request.Enabled = true;

                if (WhatIfShouldProcessHandler(string.Format(obj.Target.Target)))
                {
                    var objFromAPI = SingleConnectionRequest<SetSnmpInfoResult>("SetSnmpInfo", obj.Target, request);

                    if (SolidFireUtilities.HasAPIError(objFromAPI.Error, this)) return;
                }
            }
        }
        #endregion
    }
}