/*******************************************************************************
 *  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.ECS;
using Amazon.ECS.Model;

namespace Amazon.PowerShell.Cmdlets.ECS
{
    /// <summary>
    /// Deletes a specified service within a cluster. You can delete a service if you have
    /// no running tasks in it and the desired task count is zero. If the service is actively
    /// maintaining tasks, you can't delete it, and you must update the service to a desired
    /// task count of zero. For more information, see <a>UpdateService</a>.
    /// 
    ///  <note><para>
    /// When you delete a service, if there are still running tasks that require cleanup,
    /// the service status moves from <code>ACTIVE</code> to <code>DRAINING</code>, and the
    /// service is no longer visible in the console or in the <a>ListServices</a> API operation.
    /// After all tasks have transitioned to either <code>STOPPING</code> or <code>STOPPED</code>
    /// status, the service status moves from <code>DRAINING</code> to <code>INACTIVE</code>.
    /// Services in the <code>DRAINING</code> or <code>INACTIVE</code> status can still be
    /// viewed with the <a>DescribeServices</a> API operation. However, in the future, <code>INACTIVE</code>
    /// services may be cleaned up and purged from Amazon ECS record keeping, and <a>DescribeServices</a>
    /// calls on those services return a <code>ServiceNotFoundException</code> error.
    /// </para></note><important><para>
    /// If you attempt to create a new service with the same name as an existing service in
    /// either <code>ACTIVE</code> or <code>DRAINING</code> status, you receive an error.
    /// </para></important>
    /// </summary>
    [Cmdlet("Remove", "ECSService", SupportsShouldProcess = true, ConfirmImpact = ConfirmImpact.High)]
    [OutputType("Amazon.ECS.Model.Service")]
    [AWSCmdlet("Calls the Amazon EC2 Container Service DeleteService API operation.", Operation = new[] {"DeleteService"}, SelectReturnType = typeof(Amazon.ECS.Model.DeleteServiceResponse))]
    [AWSCmdletOutput("Amazon.ECS.Model.Service or Amazon.ECS.Model.DeleteServiceResponse",
        "This cmdlet returns an Amazon.ECS.Model.Service object.",
        "The service call response (type Amazon.ECS.Model.DeleteServiceResponse) can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack."
    )]
    public partial class RemoveECSServiceCmdlet : AmazonECSClientCmdlet, IExecutor
    {
        
        #region Parameter Cluster
        /// <summary>
        /// <para>
        /// <para>The short name or full Amazon Resource Name (ARN) of the cluster that hosts the service
        /// to delete. If you do not specify a cluster, the default cluster is assumed.</para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(Position = 0, ValueFromPipelineByPropertyName = true, ValueFromPipeline = true)]
        public System.String Cluster { get; set; }
        #endregion
        
        #region Parameter Enforce
        /// <summary>
        /// <para>
        /// <para>If <code>true</code>, allows you to delete a service even if it wasn't scaled down
        /// to zero tasks. It's only necessary to use this if the service uses the <code>REPLICA</code>
        /// scheduling strategy.</para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public System.Boolean? Enforce { get; set; }
        #endregion
        
        #region Parameter Service
        /// <summary>
        /// <para>
        /// <para>The name of the service to delete.</para>
        /// </para>
        /// </summary>
        #if !MODULAR
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        #else
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true, Mandatory = true)]
        [System.Management.Automation.AllowEmptyString]
        [System.Management.Automation.AllowNull]
        #endif
        [Amazon.PowerShell.Common.AWSRequiredParameter]
        public System.String Service { get; set; }
        #endregion
        
        #region Parameter Select
        /// <summary>
        /// Use the -Select parameter to control the cmdlet output. The default value is 'Service'.
        /// Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.ECS.Model.DeleteServiceResponse).
        /// Specifying the name of a property of type Amazon.ECS.Model.DeleteServiceResponse 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; } = "Service";
        #endregion
        
        #region Parameter PassThru
        /// <summary>
        /// Changes the cmdlet behavior to return the value passed to the Cluster parameter.
        /// The -PassThru parameter is deprecated, use -Select '^Cluster' instead. This parameter will be removed in a future version.
        /// </summary>
        [System.Obsolete("The -PassThru parameter is deprecated, use -Select '^Cluster' 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.Service), MyInvocation.BoundParameters);
            if (!ConfirmShouldProceed(this.Force.IsPresent, resourceIdentifiersText, "Remove-ECSService (DeleteService)"))
            {
                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.ECS.Model.DeleteServiceResponse, RemoveECSServiceCmdlet>(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.Cluster;
            }
            #pragma warning restore CS0618, CS0612 //A class member was marked with the Obsolete attribute
            context.Cluster = this.Cluster;
            context.Enforce = this.Enforce;
            context.Service = this.Service;
            #if MODULAR
            if (this.Service == null && ParameterWasBound(nameof(this.Service)))
            {
                WriteWarning("You are passing $null as a value for parameter Service 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.ECS.Model.DeleteServiceRequest();
            
            if (cmdletContext.Cluster != null)
            {
                request.Cluster = cmdletContext.Cluster;
            }
            if (cmdletContext.Enforce != null)
            {
                request.Force = cmdletContext.Enforce.Value;
            }
            if (cmdletContext.Service != null)
            {
                request.Service = cmdletContext.Service;
            }
            
            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.ECS.Model.DeleteServiceResponse CallAWSServiceOperation(IAmazonECS client, Amazon.ECS.Model.DeleteServiceRequest request)
        {
            Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "Amazon EC2 Container Service", "DeleteService");
            try
            {
                #if DESKTOP
                return client.DeleteService(request);
                #elif CORECLR
                return client.DeleteServiceAsync(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 Cluster { get; set; }
            public System.Boolean? Enforce { get; set; }
            public System.String Service { get; set; }
            public System.Func<Amazon.ECS.Model.DeleteServiceResponse, RemoveECSServiceCmdlet, object> Select { get; set; } =
                (response, cmdlet) => response.Service;
        }
        
    }
}