/*******************************************************************************
 *  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.Rekognition;
using Amazon.Rekognition.Model;

namespace Amazon.PowerShell.Cmdlets.REK
{
    /// <summary>
    /// Starts the asynchronous search for faces in a collection that match the faces of persons
    /// detected in a stored video.
    /// 
    ///  
    /// <para>
    /// The video must be stored in an Amazon S3 bucket. Use <a>Video</a> to specify the bucket
    /// name and the filename of the video. <code>StartFaceSearch</code> returns a job identifier
    /// (<code>JobId</code>) which you use to get the search results once the search has completed.
    /// When searching is finished, Amazon Rekognition Video publishes a completion status
    /// to the Amazon Simple Notification Service topic that you specify in <code>NotificationChannel</code>.
    /// To get the search results, first check that the status value published to the Amazon
    /// SNS topic is <code>SUCCEEDED</code>. If so, call <a>GetFaceSearch</a> and pass the
    /// job identifier (<code>JobId</code>) from the initial call to <code>StartFaceSearch</code>.
    /// For more information, see <a href="https://docs.aws.amazon.com/rekognition/latest/dg/procedure-person-search-videos.html">Searching
    /// stored videos for faces</a>. 
    /// </para>
    /// </summary>
    [Cmdlet("Start", "REKFaceSearch", SupportsShouldProcess = true, ConfirmImpact = ConfirmImpact.Medium)]
    [OutputType("System.String")]
    [AWSCmdlet("Calls the Amazon Rekognition StartFaceSearch API operation.", Operation = new[] {"StartFaceSearch"}, SelectReturnType = typeof(Amazon.Rekognition.Model.StartFaceSearchResponse))]
    [AWSCmdletOutput("System.String or Amazon.Rekognition.Model.StartFaceSearchResponse",
        "This cmdlet returns a System.String object.",
        "The service call response (type Amazon.Rekognition.Model.StartFaceSearchResponse) can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack."
    )]
    public partial class StartREKFaceSearchCmdlet : AmazonRekognitionClientCmdlet, IExecutor
    {
        
        #region Parameter ClientRequestToken
        /// <summary>
        /// <para>
        /// <para>Idempotent token used to identify the start request. If you use the same token with
        /// multiple <code>StartFaceSearch</code> requests, the same <code>JobId</code> is returned.
        /// Use <code>ClientRequestToken</code> to prevent the same job from being accidently
        /// started more than once. </para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public System.String ClientRequestToken { get; set; }
        #endregion
        
        #region Parameter CollectionId
        /// <summary>
        /// <para>
        /// <para>ID of the collection that contains the faces you want to search for.</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 CollectionId { get; set; }
        #endregion
        
        #region Parameter FaceMatchThreshold
        /// <summary>
        /// <para>
        /// <para>The minimum confidence in the person match to return. For example, don't return any
        /// matches where confidence in matches is less than 70%. The default value is 80%.</para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public System.Single? FaceMatchThreshold { get; set; }
        #endregion
        
        #region Parameter JobTag
        /// <summary>
        /// <para>
        /// <para>An identifier you specify that's returned in the completion notification that's published
        /// to your Amazon Simple Notification Service topic. For example, you can use <code>JobTag</code>
        /// to group related jobs and identify them in the completion notification.</para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public System.String JobTag { get; set; }
        #endregion
        
        #region Parameter NotificationChannel_RoleArn
        /// <summary>
        /// <para>
        /// <para>The ARN of an IAM role that gives Amazon Rekognition publishing permissions to the
        /// Amazon SNS topic. </para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public System.String NotificationChannel_RoleArn { get; set; }
        #endregion
        
        #region Parameter NotificationChannel_SNSTopicArn
        /// <summary>
        /// <para>
        /// <para>The Amazon SNS topic to which Amazon Rekognition posts the completion status.</para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public System.String NotificationChannel_SNSTopicArn { get; set; }
        #endregion
        
        #region Parameter Video
        /// <summary>
        /// <para>
        /// <para>The video you want to search. The video must be stored in an Amazon S3 bucket. </para>
        /// </para>
        /// </summary>
        #if !MODULAR
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        #else
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true, Mandatory = true)]
        [System.Management.Automation.AllowNull]
        #endif
        [Amazon.PowerShell.Common.AWSRequiredParameter]
        public Amazon.Rekognition.Model.Video Video { get; set; }
        #endregion
        
        #region Parameter Select
        /// <summary>
        /// Use the -Select parameter to control the cmdlet output. The default value is 'JobId'.
        /// Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.Rekognition.Model.StartFaceSearchResponse).
        /// Specifying the name of a property of type Amazon.Rekognition.Model.StartFaceSearchResponse 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; } = "JobId";
        #endregion
        
        #region Parameter PassThru
        /// <summary>
        /// Changes the cmdlet behavior to return the value passed to the CollectionId parameter.
        /// The -PassThru parameter is deprecated, use -Select '^CollectionId' instead. This parameter will be removed in a future version.
        /// </summary>
        [System.Obsolete("The -PassThru parameter is deprecated, use -Select '^CollectionId' instead. This parameter will be removed in a future version.")]
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public SwitchParameter PassThru { get; set; }
        #endregion
        
        #region Parameter Force
        /// <summary>
        /// This parameter overrides confirmation prompts to force 
        /// the cmdlet to continue its operation. This parameter should always
        /// be used with caution.
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public SwitchParameter Force { get; set; }
        #endregion
        
        protected override void ProcessRecord()
        {
            this._AWSSignerType = "v4";
            base.ProcessRecord();
            
            var resourceIdentifiersText = FormatParameterValuesForConfirmationMsg(nameof(this.CollectionId), MyInvocation.BoundParameters);
            if (!ConfirmShouldProceed(this.Force.IsPresent, resourceIdentifiersText, "Start-REKFaceSearch (StartFaceSearch)"))
            {
                return;
            }
            
            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.Rekognition.Model.StartFaceSearchResponse, StartREKFaceSearchCmdlet>(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.CollectionId;
            }
            #pragma warning restore CS0618, CS0612 //A class member was marked with the Obsolete attribute
            context.ClientRequestToken = this.ClientRequestToken;
            context.CollectionId = this.CollectionId;
            #if MODULAR
            if (this.CollectionId == null && ParameterWasBound(nameof(this.CollectionId)))
            {
                WriteWarning("You are passing $null as a value for parameter CollectionId 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.FaceMatchThreshold = this.FaceMatchThreshold;
            context.JobTag = this.JobTag;
            context.NotificationChannel_RoleArn = this.NotificationChannel_RoleArn;
            context.NotificationChannel_SNSTopicArn = this.NotificationChannel_SNSTopicArn;
            context.Video = this.Video;
            #if MODULAR
            if (this.Video == null && ParameterWasBound(nameof(this.Video)))
            {
                WriteWarning("You are passing $null as a value for parameter Video 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.Rekognition.Model.StartFaceSearchRequest();
            
            if (cmdletContext.ClientRequestToken != null)
            {
                request.ClientRequestToken = cmdletContext.ClientRequestToken;
            }
            if (cmdletContext.CollectionId != null)
            {
                request.CollectionId = cmdletContext.CollectionId;
            }
            if (cmdletContext.FaceMatchThreshold != null)
            {
                request.FaceMatchThreshold = cmdletContext.FaceMatchThreshold.Value;
            }
            if (cmdletContext.JobTag != null)
            {
                request.JobTag = cmdletContext.JobTag;
            }
            
             // populate NotificationChannel
            var requestNotificationChannelIsNull = true;
            request.NotificationChannel = new Amazon.Rekognition.Model.NotificationChannel();
            System.String requestNotificationChannel_notificationChannel_RoleArn = null;
            if (cmdletContext.NotificationChannel_RoleArn != null)
            {
                requestNotificationChannel_notificationChannel_RoleArn = cmdletContext.NotificationChannel_RoleArn;
            }
            if (requestNotificationChannel_notificationChannel_RoleArn != null)
            {
                request.NotificationChannel.RoleArn = requestNotificationChannel_notificationChannel_RoleArn;
                requestNotificationChannelIsNull = false;
            }
            System.String requestNotificationChannel_notificationChannel_SNSTopicArn = null;
            if (cmdletContext.NotificationChannel_SNSTopicArn != null)
            {
                requestNotificationChannel_notificationChannel_SNSTopicArn = cmdletContext.NotificationChannel_SNSTopicArn;
            }
            if (requestNotificationChannel_notificationChannel_SNSTopicArn != null)
            {
                request.NotificationChannel.SNSTopicArn = requestNotificationChannel_notificationChannel_SNSTopicArn;
                requestNotificationChannelIsNull = false;
            }
             // determine if request.NotificationChannel should be set to null
            if (requestNotificationChannelIsNull)
            {
                request.NotificationChannel = null;
            }
            if (cmdletContext.Video != null)
            {
                request.Video = cmdletContext.Video;
            }
            
            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.Rekognition.Model.StartFaceSearchResponse CallAWSServiceOperation(IAmazonRekognition client, Amazon.Rekognition.Model.StartFaceSearchRequest request)
        {
            Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "Amazon Rekognition", "StartFaceSearch");
            try
            {
                #if DESKTOP
                return client.StartFaceSearch(request);
                #elif CORECLR
                return client.StartFaceSearchAsync(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 ClientRequestToken { get; set; }
            public System.String CollectionId { get; set; }
            public System.Single? FaceMatchThreshold { get; set; }
            public System.String JobTag { get; set; }
            public System.String NotificationChannel_RoleArn { get; set; }
            public System.String NotificationChannel_SNSTopicArn { get; set; }
            public Amazon.Rekognition.Model.Video Video { get; set; }
            public System.Func<Amazon.Rekognition.Model.StartFaceSearchResponse, StartREKFaceSearchCmdlet, object> Select { get; set; } =
                (response, cmdlet) => response.JobId;
        }
        
    }
}