/*******************************************************************************
 *  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.ECR;
using Amazon.ECR.Model;

namespace Amazon.PowerShell.Cmdlets.ECR
{
    /// <summary>
    /// Returns metadata about the images in a repository.
    /// 
    ///  <note><para>
    /// Beginning with Docker version 1.9, the Docker client compresses image layers before
    /// pushing them to a V2 Docker registry. The output of the <code>docker images</code>
    /// command shows the uncompressed image size, so it may return a larger image size than
    /// the image sizes returned by <a>DescribeImages</a>.
    /// </para></note><br/><br/>This cmdlet automatically pages all available results to the pipeline - parameters related to iteration are only needed if you want to manually control the paginated output. To disable autopagination, use -NoAutoIteration.
    /// </summary>
    [Cmdlet("Get", "ECRImageMetadata")]
    [OutputType("Amazon.ECR.Model.ImageDetail")]
    [AWSCmdlet("Calls the Amazon EC2 Container Registry DescribeImages API operation.", Operation = new[] {"DescribeImages"}, SelectReturnType = typeof(Amazon.ECR.Model.DescribeImagesResponse))]
    [AWSCmdletOutput("Amazon.ECR.Model.ImageDetail or Amazon.ECR.Model.DescribeImagesResponse",
        "This cmdlet returns a collection of Amazon.ECR.Model.ImageDetail objects.",
        "The service call response (type Amazon.ECR.Model.DescribeImagesResponse) can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack."
    )]
    public partial class GetECRImageMetadataCmdlet : AmazonECRClientCmdlet, IExecutor
    {
        
        #region Parameter ImageId
        /// <summary>
        /// <para>
        /// <para>The list of image IDs for the requested repository.</para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        [Alias("ImageIds")]
        public Amazon.ECR.Model.ImageIdentifier[] ImageId { get; set; }
        #endregion
        
        #region Parameter RegistryId
        /// <summary>
        /// <para>
        /// <para>The Amazon Web Services account ID associated with the registry that contains the
        /// repository in which to describe images. If you do not specify a registry, the default
        /// registry is assumed.</para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public System.String RegistryId { get; set; }
        #endregion
        
        #region Parameter RepositoryName
        /// <summary>
        /// <para>
        /// <para>The repository that contains the images to describe.</para>
        /// </para>
        /// </summary>
        #if !MODULAR
        [System.Management.Automation.Parameter(Position = 0, ValueFromPipelineByPropertyName = true, ValueFromPipeline = true)]
        #else
        [System.Management.Automation.Parameter(Position = 0, ValueFromPipelineByPropertyName = true, ValueFromPipeline = true, Mandatory = true)]
        [System.Management.Automation.AllowEmptyString]
        [System.Management.Automation.AllowNull]
        #endif
        [Amazon.PowerShell.Common.AWSRequiredParameter]
        public System.String RepositoryName { get; set; }
        #endregion
        
        #region Parameter Filter_TagStatus
        /// <summary>
        /// <para>
        /// <para>The tag status with which to filter your <a>DescribeImages</a> results. You can filter
        /// results based on whether they are <code>TAGGED</code> or <code>UNTAGGED</code>.</para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        [AWSConstantClassSource("Amazon.ECR.TagStatus")]
        public Amazon.ECR.TagStatus Filter_TagStatus { get; set; }
        #endregion
        
        #region Parameter MaxResult
        /// <summary>
        /// <para>
        /// <para>The maximum number of repository results returned by <code>DescribeImages</code> in
        /// paginated output. When this parameter is used, <code>DescribeImages</code> only returns
        /// <code>maxResults</code> results in a single page along with a <code>nextToken</code>
        /// response element. The remaining results of the initial request can be seen by sending
        /// another <code>DescribeImages</code> request with the returned <code>nextToken</code>
        /// value. This value can be between 1 and 1000. If this parameter is not used, then <code>DescribeImages</code>
        /// returns up to 100 results and a <code>nextToken</code> value, if applicable. This
        /// option cannot be used when you specify images with <code>imageIds</code>.</para>
        /// </para>
        /// <para>
        /// <br/><b>Note:</b> In AWSPowerShell and AWSPowerShell.NetCore this parameter is used to limit the total number of items returned by the cmdlet.
        /// <br/>In AWS.Tools this parameter is simply passed to the service to specify how many items should be returned by each service call.
        /// <br/>Pipe the output of this cmdlet into Select-Object -First to terminate retrieving data pages early and control the number of items returned.
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        [Alias("MaxItems","MaxResults")]
        public int? MaxResult { get; set; }
        #endregion
        
        #region Parameter NextToken
        /// <summary>
        /// <para>
        /// <para>The <code>nextToken</code> value returned from a previous paginated <code>DescribeImages</code>
        /// request where <code>maxResults</code> was used and the results exceeded the value
        /// of that parameter. Pagination continues from the end of the previous results that
        /// returned the <code>nextToken</code> value. This value is <code>null</code> when there
        /// are no more results to return. This option cannot be used when you specify images
        /// with <code>imageIds</code>.</para>
        /// </para>
        /// <para>
        /// <br/><b>Note:</b> This parameter is only used if you are manually controlling output pagination of the service API call.
        /// <br/>In order to manually control output pagination, use '-NextToken $null' for the first call and '-NextToken $AWSHistory.LastServiceResponse.NextToken' for subsequent calls.
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public System.String NextToken { get; set; }
        #endregion
        
        #region Parameter Select
        /// <summary>
        /// Use the -Select parameter to control the cmdlet output. The default value is 'ImageDetails'.
        /// Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.ECR.Model.DescribeImagesResponse).
        /// Specifying the name of a property of type Amazon.ECR.Model.DescribeImagesResponse 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; } = "ImageDetails";
        #endregion
        
        #region Parameter PassThru
        /// <summary>
        /// Changes the cmdlet behavior to return the value passed to the RepositoryName parameter.
        /// The -PassThru parameter is deprecated, use -Select '^RepositoryName' instead. This parameter will be removed in a future version.
        /// </summary>
        [System.Obsolete("The -PassThru parameter is deprecated, use -Select '^RepositoryName' instead. This parameter will be removed in a future version.")]
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public SwitchParameter PassThru { get; set; }
        #endregion
        
        #region Parameter NoAutoIteration
        /// <summary>
        /// By default the cmdlet will auto-iterate and retrieve all results to the pipeline by performing multiple
        /// service calls. If set, the cmdlet will retrieve only the next 'page' of results using the value of NextToken
        /// as the start point.
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public SwitchParameter NoAutoIteration { get; set; }
        #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);
            
            #pragma warning disable CS0618, CS0612 //A class member was marked with the Obsolete attribute
            if (ParameterWasBound(nameof(this.Select)))
            {
                context.Select = CreateSelectDelegate<Amazon.ECR.Model.DescribeImagesResponse, GetECRImageMetadataCmdlet>(Select) ??
                    throw new System.ArgumentException("Invalid value for -Select parameter.", nameof(this.Select));
                if (this.PassThru.IsPresent)
                {
                    throw new System.ArgumentException("-PassThru cannot be used when -Select is specified.", nameof(this.Select));
                }
            }
            else if (this.PassThru.IsPresent)
            {
                context.Select = (response, cmdlet) => this.RepositoryName;
            }
            #pragma warning restore CS0618, CS0612 //A class member was marked with the Obsolete attribute
            context.Filter_TagStatus = this.Filter_TagStatus;
            if (this.ImageId != null)
            {
                context.ImageId = new List<Amazon.ECR.Model.ImageIdentifier>(this.ImageId);
            }
            context.MaxResult = this.MaxResult;
            #if !MODULAR
            if (ParameterWasBound(nameof(this.MaxResult)) && this.MaxResult.HasValue)
            {
                WriteWarning("AWSPowerShell and AWSPowerShell.NetCore use the MaxResult parameter to limit the total number of items returned by the cmdlet." +
                    " This behavior is obsolete and will be removed in a future version of these modules. Pipe the output of this cmdlet into Select-Object -First to terminate" +
                    " retrieving data pages early and control the number of items returned. AWS.Tools already implements the new behavior of simply passing MaxResult" +
                    " to the service to specify how many items should be returned by each service call.");
            }
            #endif
            context.NextToken = this.NextToken;
            context.RegistryId = this.RegistryId;
            context.RepositoryName = this.RepositoryName;
            #if MODULAR
            if (this.RepositoryName == null && ParameterWasBound(nameof(this.RepositoryName)))
            {
                WriteWarning("You are passing $null as a value for parameter RepositoryName 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
        
        #if MODULAR
        public object Execute(ExecutorContext context)
        {
            var cmdletContext = context as CmdletContext;
            #pragma warning disable CS0618, CS0612 //A class member was marked with the Obsolete attribute
            var useParameterSelect = this.Select.StartsWith("^") || this.PassThru.IsPresent;
            #pragma warning restore CS0618, CS0612 //A class member was marked with the Obsolete attribute
            
            // create request and set iteration invariants
            var request = new Amazon.ECR.Model.DescribeImagesRequest();
            
            
             // populate Filter
            var requestFilterIsNull = true;
            request.Filter = new Amazon.ECR.Model.DescribeImagesFilter();
            Amazon.ECR.TagStatus requestFilter_filter_TagStatus = null;
            if (cmdletContext.Filter_TagStatus != null)
            {
                requestFilter_filter_TagStatus = cmdletContext.Filter_TagStatus;
            }
            if (requestFilter_filter_TagStatus != null)
            {
                request.Filter.TagStatus = requestFilter_filter_TagStatus;
                requestFilterIsNull = false;
            }
             // determine if request.Filter should be set to null
            if (requestFilterIsNull)
            {
                request.Filter = null;
            }
            if (cmdletContext.ImageId != null)
            {
                request.ImageIds = cmdletContext.ImageId;
            }
            if (cmdletContext.MaxResult != null)
            {
                request.MaxResults = AutoIterationHelpers.ConvertEmitLimitToServiceTypeInt32(cmdletContext.MaxResult.Value);
            }
            if (cmdletContext.RegistryId != null)
            {
                request.RegistryId = cmdletContext.RegistryId;
            }
            if (cmdletContext.RepositoryName != null)
            {
                request.RepositoryName = cmdletContext.RepositoryName;
            }
            
            // Initialize loop variant and commence piping
            var _nextToken = cmdletContext.NextToken;
            var _userControllingPaging = this.NoAutoIteration.IsPresent || ParameterWasBound(nameof(this.NextToken));
            
            var client = Client ?? CreateClient(_CurrentCredentials, _RegionEndpoint);
            do
            {
                request.NextToken = _nextToken;
                
                CmdletOutput output;
                
                try
                {
                    
                    var response = CallAWSServiceOperation(client, request);
                    
                    object pipelineOutput = null;
                    if (!useParameterSelect)
                    {
                        pipelineOutput = cmdletContext.Select(response, this);
                    }
                    output = new CmdletOutput
                    {
                        PipelineOutput = pipelineOutput,
                        ServiceResponse = response
                    };
                    
                    _nextToken = response.NextToken;
                }
                catch (Exception e)
                {
                    output = new CmdletOutput { ErrorResponse = e };
                }
                
                ProcessOutput(output);
                
            } while (!_userControllingPaging && AutoIterationHelpers.HasValue(_nextToken));
            
            if (useParameterSelect)
            {
                WriteObject(cmdletContext.Select(null, this));
            }
            
            
            return null;
        }
        #else
        public object Execute(ExecutorContext context)
        {
            var cmdletContext = context as CmdletContext;
            var useParameterSelect = this.Select.StartsWith("^") || this.PassThru.IsPresent;
            
            // create request and set iteration invariants
            var request = new Amazon.ECR.Model.DescribeImagesRequest();
            
             // populate Filter
            var requestFilterIsNull = true;
            request.Filter = new Amazon.ECR.Model.DescribeImagesFilter();
            Amazon.ECR.TagStatus requestFilter_filter_TagStatus = null;
            if (cmdletContext.Filter_TagStatus != null)
            {
                requestFilter_filter_TagStatus = cmdletContext.Filter_TagStatus;
            }
            if (requestFilter_filter_TagStatus != null)
            {
                request.Filter.TagStatus = requestFilter_filter_TagStatus;
                requestFilterIsNull = false;
            }
             // determine if request.Filter should be set to null
            if (requestFilterIsNull)
            {
                request.Filter = null;
            }
            if (cmdletContext.ImageId != null)
            {
                request.ImageIds = cmdletContext.ImageId;
            }
            if (cmdletContext.RegistryId != null)
            {
                request.RegistryId = cmdletContext.RegistryId;
            }
            if (cmdletContext.RepositoryName != null)
            {
                request.RepositoryName = cmdletContext.RepositoryName;
            }
            
            // Initialize loop variants and commence piping
            System.String _nextToken = null;
            int? _emitLimit = null;
            int _retrievedSoFar = 0;
            if (AutoIterationHelpers.HasValue(cmdletContext.NextToken))
            {
                _nextToken = cmdletContext.NextToken;
            }
            if (cmdletContext.MaxResult.HasValue)
            {
                // The service has a maximum page size of 100. If the user has
                // asked for more items than page max, and there is no page size
                // configured, we rely on the service ignoring the set maximum
                // and giving us 100 items back. If a page size is set, that will
                // be used to configure the pagination.
                // We'll make further calls to satisfy the user's request.
                _emitLimit = cmdletContext.MaxResult;
            }
            var _userControllingPaging = this.NoAutoIteration.IsPresent || ParameterWasBound(nameof(this.NextToken));
            
            var client = Client ?? CreateClient(_CurrentCredentials, _RegionEndpoint);
            do
            {
                request.NextToken = _nextToken;
                if (_emitLimit.HasValue)
                {
                    int correctPageSize = Math.Min(100, _emitLimit.Value);
                    request.MaxResults = AutoIterationHelpers.ConvertEmitLimitToInt32(correctPageSize);
                }
                
                CmdletOutput output;
                
                try
                {
                    
                    var response = CallAWSServiceOperation(client, request);
                    object pipelineOutput = null;
                    if (!useParameterSelect)
                    {
                        pipelineOutput = cmdletContext.Select(response, this);
                    }
                    output = new CmdletOutput
                    {
                        PipelineOutput = pipelineOutput,
                        ServiceResponse = response
                    };
                    int _receivedThisCall = response.ImageDetails.Count;
                    
                    _nextToken = response.NextToken;
                    _retrievedSoFar += _receivedThisCall;
                    if (_emitLimit.HasValue)
                    {
                        _emitLimit -= _receivedThisCall;
                    }
                }
                catch (Exception e)
                {
                    if (_retrievedSoFar == 0 || !_emitLimit.HasValue)
                    {
                        output = new CmdletOutput { ErrorResponse = e };
                    }
                    else
                    {
                        break;
                    }
                }
                
                ProcessOutput(output);
            } while (!_userControllingPaging && AutoIterationHelpers.HasValue(_nextToken) && (!_emitLimit.HasValue || _emitLimit.Value >= 1));
            
            
            if (useParameterSelect)
            {
                WriteObject(cmdletContext.Select(null, this));
            }
            
            
            return null;
        }
        #endif
        
        public ExecutorContext CreateContext()
        {
            return new CmdletContext();
        }
        
        #endregion
        
        #region AWS Service Operation Call
        
        private Amazon.ECR.Model.DescribeImagesResponse CallAWSServiceOperation(IAmazonECR client, Amazon.ECR.Model.DescribeImagesRequest request)
        {
            Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "Amazon EC2 Container Registry", "DescribeImages");
            try
            {
                #if DESKTOP
                return client.DescribeImages(request);
                #elif CORECLR
                return client.DescribeImagesAsync(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 Amazon.ECR.TagStatus Filter_TagStatus { get; set; }
            public List<Amazon.ECR.Model.ImageIdentifier> ImageId { get; set; }
            public int? MaxResult { get; set; }
            public System.String NextToken { get; set; }
            public System.String RegistryId { get; set; }
            public System.String RepositoryName { get; set; }
            public System.Func<Amazon.ECR.Model.DescribeImagesResponse, GetECRImageMetadataCmdlet, object> Select { get; set; } =
                (response, cmdlet) => response.ImageDetails;
        }
        
    }
}