/*******************************************************************************
 *  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.RDS;
using Amazon.RDS.Model;

namespace Amazon.PowerShell.Cmdlets.RDS
{
    /// <summary>
    /// Modifies the parameters of a DB parameter group. To modify more than one parameter,
    /// submit a list of the following: <code>ParameterName</code>, <code>ParameterValue</code>,
    /// and <code>ApplyMethod</code>. A maximum of 20 parameters can be modified in a single
    /// request.
    /// 
    ///  <important><para>
    /// After you modify a DB parameter group, you should wait at least 5 minutes before creating
    /// your first DB instance that uses that DB parameter group as the default parameter
    /// group. This allows Amazon RDS to fully complete the modify action before the parameter
    /// group is used as the default for a new DB instance. This is especially important for
    /// parameters that are critical when creating the default database for a DB instance,
    /// such as the character set for the default database defined by the <code>character_set_database</code>
    /// parameter. You can use the <i>Parameter Groups</i> option of the <a href="https://console.aws.amazon.com/rds/">Amazon
    /// RDS console</a> or the <i>DescribeDBParameters</i> command to verify that your DB
    /// parameter group has been created or modified.
    /// </para></important>
    /// </summary>
    [Cmdlet("Edit", "RDSDBParameterGroup", SupportsShouldProcess = true, ConfirmImpact = ConfirmImpact.Medium)]
    [OutputType("System.String")]
    [AWSCmdlet("Calls the Amazon Relational Database Service ModifyDBParameterGroup API operation.", Operation = new[] {"ModifyDBParameterGroup"}, SelectReturnType = typeof(Amazon.RDS.Model.ModifyDBParameterGroupResponse))]
    [AWSCmdletOutput("System.String or Amazon.RDS.Model.ModifyDBParameterGroupResponse",
        "This cmdlet returns a System.String object.",
        "The service call response (type Amazon.RDS.Model.ModifyDBParameterGroupResponse) can also be referenced from properties attached to the cmdlet entry in the $AWSHistory stack."
    )]
    public partial class EditRDSDBParameterGroupCmdlet : AmazonRDSClientCmdlet, IExecutor
    {
        
        #region Parameter DBParameterGroupName
        /// <summary>
        /// <para>
        /// <para>The name of the DB parameter group.</para><para>Constraints:</para><ul><li><para>If supplied, must match the name of an existing <code>DBParameterGroup</code>.</para></li></ul>
        /// </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 DBParameterGroupName { get; set; }
        #endregion
        
        #region Parameter Parameter
        /// <summary>
        /// <para>
        /// <para>An array of parameter names, values, and the application methods for the parameter
        /// update. At least one parameter name, value, and application method must be supplied;
        /// later arguments are optional. A maximum of 20 parameters can be modified in a single
        /// request.</para><para>Valid Values (for the application method): <code>immediate | pending-reboot</code></para><para>You can use the <code>immediate</code> value with dynamic parameters only. You can
        /// use the <code>pending-reboot</code> value for both dynamic and static parameters.</para><para>When the application method is <code>immediate</code>, changes to dynamic parameters
        /// are applied immediately to the DB instances associated with the parameter group.</para><para>When the application method is <code>pending-reboot</code>, changes to dynamic and
        /// static parameters are applied after a reboot without failover to the DB instances
        /// associated with the parameter group.</para><note><para>You can't use <code>pending-reboot</code> with dynamic parameters on RDS for SQL Server
        /// DB instances. Use <code>immediate</code>.</para></note><para>For more information on modifying DB parameters, see <a href="https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_WorkingWithParamGroups.html">Working
        /// with DB parameter groups</a> in the <i>Amazon RDS User Guide</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.AllowEmptyCollection]
        [System.Management.Automation.AllowNull]
        #endif
        [Amazon.PowerShell.Common.AWSRequiredParameter]
        [Alias("Parameters")]
        public Amazon.RDS.Model.Parameter[] Parameter { get; set; }
        #endregion
        
        #region Parameter Select
        /// <summary>
        /// Use the -Select parameter to control the cmdlet output. The default value is 'DBParameterGroupName'.
        /// Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.RDS.Model.ModifyDBParameterGroupResponse).
        /// Specifying the name of a property of type Amazon.RDS.Model.ModifyDBParameterGroupResponse 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; } = "DBParameterGroupName";
        #endregion
        
        #region Parameter PassThru
        /// <summary>
        /// Changes the cmdlet behavior to return the value passed to the DBParameterGroupName parameter.
        /// The -PassThru parameter is deprecated, use -Select '^DBParameterGroupName' instead. This parameter will be removed in a future version.
        /// </summary>
        [System.Obsolete("The -PassThru parameter is deprecated, use -Select '^DBParameterGroupName' 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.DBParameterGroupName), MyInvocation.BoundParameters);
            if (!ConfirmShouldProceed(this.Force.IsPresent, resourceIdentifiersText, "Edit-RDSDBParameterGroup (ModifyDBParameterGroup)"))
            {
                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.RDS.Model.ModifyDBParameterGroupResponse, EditRDSDBParameterGroupCmdlet>(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.DBParameterGroupName;
            }
            #pragma warning restore CS0618, CS0612 //A class member was marked with the Obsolete attribute
            context.DBParameterGroupName = this.DBParameterGroupName;
            #if MODULAR
            if (this.DBParameterGroupName == null && ParameterWasBound(nameof(this.DBParameterGroupName)))
            {
                WriteWarning("You are passing $null as a value for parameter DBParameterGroupName 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
            if (this.Parameter != null)
            {
                context.Parameter = new List<Amazon.RDS.Model.Parameter>(this.Parameter);
            }
            #if MODULAR
            if (this.Parameter == null && ParameterWasBound(nameof(this.Parameter)))
            {
                WriteWarning("You are passing $null as a value for parameter Parameter 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.RDS.Model.ModifyDBParameterGroupRequest();
            
            if (cmdletContext.DBParameterGroupName != null)
            {
                request.DBParameterGroupName = cmdletContext.DBParameterGroupName;
            }
            if (cmdletContext.Parameter != null)
            {
                request.Parameters = cmdletContext.Parameter;
            }
            
            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.RDS.Model.ModifyDBParameterGroupResponse CallAWSServiceOperation(IAmazonRDS client, Amazon.RDS.Model.ModifyDBParameterGroupRequest request)
        {
            Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "Amazon Relational Database Service", "ModifyDBParameterGroup");
            try
            {
                #if DESKTOP
                return client.ModifyDBParameterGroup(request);
                #elif CORECLR
                return client.ModifyDBParameterGroupAsync(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 DBParameterGroupName { get; set; }
            public List<Amazon.RDS.Model.Parameter> Parameter { get; set; }
            public System.Func<Amazon.RDS.Model.ModifyDBParameterGroupResponse, EditRDSDBParameterGroupCmdlet, object> Select { get; set; } =
                (response, cmdlet) => response.DBParameterGroupName;
        }
        
    }
}