/*******************************************************************************
 *  Copyright 2012-2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *  Licensed under the Apache License, Version 2.0 (the "License"). You may not use
 *  this file except in compliance with the License. A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 *  or in the "license" file accompanying this file.
 *  This file 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.
 * *****************************************************************************
 *
 *  AWS Tools for Windows (TM) PowerShell (TM)
 *
 */

using System;
using System.Collections.Generic;
using System.Linq;
using System.Management.Automation;
using System.Text;
using Amazon.PowerShell.Common;
using Amazon.Runtime;
using Amazon.IdentityManagement;
using Amazon.IdentityManagement.Model;

namespace Amazon.PowerShell.Cmdlets.IAM
{
    /// <summary>
    /// Retrieves information about the specified version of the specified managed policy,
    /// including the policy document.
    /// 
    ///  <note><para>
    /// Policies returned by this operation are URL-encoded compliant with <a href="https://tools.ietf.org/html/rfc3986">RFC
    /// 3986</a>. You can use a URL decoding method to convert the policy back to plain JSON
    /// text. For example, if you use Java, you can use the <code>decode</code> method of
    /// the <code>java.net.URLDecoder</code> utility class in the Java SDK. Other languages
    /// and SDKs provide similar functionality.
    /// </para></note><para>
    /// To list the available versions for a policy, use <a>ListPolicyVersions</a>.
    /// </para><para>
    /// This operation retrieves information about managed policies. To retrieve information
    /// about an inline policy that is embedded in a user, group, or role, use <a>GetUserPolicy</a>,
    /// <a>GetGroupPolicy</a>, or <a>GetRolePolicy</a>.
    /// </para><para>
    /// For more information about the types of policies, see <a href="https://docs.aws.amazon.com/IAM/latest/UserGuide/policies-managed-vs-inline.html">Managed
    /// policies and inline policies</a> in the <i>IAM User Guide</i>.
    /// </para><para>
    /// For more information about managed policy versions, see <a href="https://docs.aws.amazon.com/IAM/latest/UserGuide/policies-managed-versions.html">Versioning
    /// for managed policies</a> in the <i>IAM User Guide</i>.
    /// </para>
    /// </summary>
    [Cmdlet("Get", "IAMPolicyVersion")]
    [OutputType("Amazon.IdentityManagement.Model.PolicyVersion")]
    [AWSCmdlet("Calls the AWS Identity and Access Management GetPolicyVersion API operation.", Operation = new[] {"GetPolicyVersion"}, SelectReturnType = typeof(Amazon.IdentityManagement.Model.GetPolicyVersionResponse))]
    [AWSCmdletOutput("Amazon.IdentityManagement.Model.PolicyVersion or Amazon.IdentityManagement.Model.GetPolicyVersionResponse",
        "This cmdlet returns an Amazon.IdentityManagement.Model.PolicyVersion object.",
        "The service call response (type Amazon.IdentityManagement.Model.GetPolicyVersionResponse) can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack."
    )]
    public partial class GetIAMPolicyVersionCmdlet : AmazonIdentityManagementServiceClientCmdlet, IExecutor
    {
        
        #region Parameter PolicyArn
        /// <summary>
        /// <para>
        /// <para>The Amazon Resource Name (ARN) of the managed policy that you want information about.</para><para>For more information about ARNs, see <a href="https://docs.aws.amazon.com/general/latest/gr/aws-arns-and-namespaces.html">Amazon
        /// Resource Names (ARNs)</a> in the <i>Amazon Web Services General Reference</i>.</para>
        /// </para>
        /// </summary>
        #if !MODULAR
        [System.Management.Automation.Parameter(Position = 1, ValueFromPipelineByPropertyName = true)]
        #else
        [System.Management.Automation.Parameter(Position = 1, ValueFromPipelineByPropertyName = true, Mandatory = true)]
        [System.Management.Automation.AllowEmptyString]
        [System.Management.Automation.AllowNull]
        #endif
        [Amazon.PowerShell.Common.AWSRequiredParameter]
        public System.String PolicyArn { get; set; }
        #endregion
        
        #region Parameter VersionId
        /// <summary>
        /// <para>
        /// <para>Identifies the policy version to retrieve.</para><para>This parameter allows (through its <a href="http://wikipedia.org/wiki/regex">regex
        /// pattern</a>) a string of characters that consists of the lowercase letter 'v' followed
        /// by one or two digits, and optionally followed by a period '.' and a string of letters
        /// and digits.</para>
        /// </para>
        /// </summary>
        #if !MODULAR
        [System.Management.Automation.Parameter(Position = 2, ValueFromPipelineByPropertyName = true)]
        #else
        [System.Management.Automation.Parameter(Position = 2, ValueFromPipelineByPropertyName = true, Mandatory = true)]
        [System.Management.Automation.AllowEmptyString]
        [System.Management.Automation.AllowNull]
        #endif
        [Amazon.PowerShell.Common.AWSRequiredParameter]
        public System.String VersionId { get; set; }
        #endregion
        
        #region Parameter Select
        /// <summary>
        /// Use the -Select parameter to control the cmdlet output. The default value is 'PolicyVersion'.
        /// Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.IdentityManagement.Model.GetPolicyVersionResponse).
        /// Specifying the name of a property of type Amazon.IdentityManagement.Model.GetPolicyVersionResponse will result in that property being returned.
        /// Specifying -Select '^ParameterName' will result in the cmdlet returning the selected cmdlet parameter value.
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public string Select { get; set; } = "PolicyVersion";
        #endregion
        
        protected override void ProcessRecord()
        {
            this._AWSSignerType = "v4";
            base.ProcessRecord();
            
            var context = new CmdletContext();
            
            // allow for manipulation of parameters prior to loading into context
            PreExecutionContextLoad(context);
            
            if (ParameterWasBound(nameof(this.Select)))
            {
                context.Select = CreateSelectDelegate<Amazon.IdentityManagement.Model.GetPolicyVersionResponse, GetIAMPolicyVersionCmdlet>(Select) ??
                    throw new System.ArgumentException("Invalid value for -Select parameter.", nameof(this.Select));
            }
            context.PolicyArn = this.PolicyArn;
            #if MODULAR
            if (this.PolicyArn == null && ParameterWasBound(nameof(this.PolicyArn)))
            {
                WriteWarning("You are passing $null as a value for parameter PolicyArn which is marked as required. In case you believe this parameter was incorrectly marked as required, report this by opening an issue at https://github.com/aws/aws-tools-for-powershell/issues.");
            }
            #endif
            context.VersionId = this.VersionId;
            #if MODULAR
            if (this.VersionId == null && ParameterWasBound(nameof(this.VersionId)))
            {
                WriteWarning("You are passing $null as a value for parameter VersionId which is marked as required. In case you believe this parameter was incorrectly marked as required, report this by opening an issue at https://github.com/aws/aws-tools-for-powershell/issues.");
            }
            #endif
            
            // allow further manipulation of loaded context prior to processing
            PostExecutionContextLoad(context);
            
            var output = Execute(context) as CmdletOutput;
            ProcessOutput(output);
        }
        
        #region IExecutor Members
        
        public object Execute(ExecutorContext context)
        {
            var cmdletContext = context as CmdletContext;
            // create request
            var request = new Amazon.IdentityManagement.Model.GetPolicyVersionRequest();
            
            if (cmdletContext.PolicyArn != null)
            {
                request.PolicyArn = cmdletContext.PolicyArn;
            }
            if (cmdletContext.VersionId != null)
            {
                request.VersionId = cmdletContext.VersionId;
            }
            
            CmdletOutput output;
            
            // issue call
            var client = Client ?? CreateClient(_CurrentCredentials, _RegionEndpoint);
            try
            {
                var response = CallAWSServiceOperation(client, request);
                object pipelineOutput = null;
                pipelineOutput = cmdletContext.Select(response, this);
                output = new CmdletOutput
                {
                    PipelineOutput = pipelineOutput,
                    ServiceResponse = response
                };
            }
            catch (Exception e)
            {
                output = new CmdletOutput { ErrorResponse = e };
            }
            
            return output;
        }
        
        public ExecutorContext CreateContext()
        {
            return new CmdletContext();
        }
        
        #endregion
        
        #region AWS Service Operation Call
        
        private Amazon.IdentityManagement.Model.GetPolicyVersionResponse CallAWSServiceOperation(IAmazonIdentityManagementService client, Amazon.IdentityManagement.Model.GetPolicyVersionRequest request)
        {
            Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "AWS Identity and Access Management", "GetPolicyVersion");
            try
            {
                #if DESKTOP
                return client.GetPolicyVersion(request);
                #elif CORECLR
                return client.GetPolicyVersionAsync(request).GetAwaiter().GetResult();
                #else
                        #error "Unknown build edition"
                #endif
            }
            catch (AmazonServiceException exc)
            {
                var webException = exc.InnerException as System.Net.WebException;
                if (webException != null)
                {
                    throw new Exception(Utils.Common.FormatNameResolutionFailureMessage(client.Config, webException.Message), webException);
                }
                throw;
            }
        }
        
        #endregion
        
        internal partial class CmdletContext : ExecutorContext
        {
            public System.String PolicyArn { get; set; }
            public System.String VersionId { get; set; }
            public System.Func<Amazon.IdentityManagement.Model.GetPolicyVersionResponse, GetIAMPolicyVersionCmdlet, object> Select { get; set; } =
                (response, cmdlet) => response.PolicyVersion;
        }
        
    }
}