/*******************************************************************************
 *  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.S3;
using Amazon.S3.Model;

namespace Amazon.PowerShell.Cmdlets.S3
{
    /// <summary>
    /// Sets the <code>cors</code> configuration for your bucket. If the configuration exists,
    /// Amazon S3 replaces it.
    /// 
    ///  
    /// <para>
    /// To use this operation, you must be allowed to perform the <code>s3:PutBucketCORS</code>
    /// action. By default, the bucket owner has this permission and can grant it to others.
    /// </para><para>
    /// You set this configuration on a bucket so that the bucket can service cross-origin
    /// requests. For example, you might want to enable a request whose origin is <code>http://www.example.com</code>
    /// to access your Amazon S3 bucket at <code>my.example.bucket.com</code> by using the
    /// browser's <code>XMLHttpRequest</code> capability.
    /// </para><para>
    /// To enable cross-origin resource sharing (CORS) on a bucket, you add the <code>cors</code>
    /// subresource to the bucket. The <code>cors</code> subresource is an XML document in
    /// which you configure rules that identify origins and the HTTP methods that can be executed
    /// on your bucket. The document is limited to 64 KB in size. 
    /// </para><para>
    /// When Amazon S3 receives a cross-origin request (or a pre-flight OPTIONS request) against
    /// a bucket, it evaluates the <code>cors</code> configuration on the bucket and uses
    /// the first <code>CORSRule</code> rule that matches the incoming browser request to
    /// enable a cross-origin request. For a rule to match, the following conditions must
    /// be met:
    /// </para><ul><li><para>
    /// The request's <code>Origin</code> header must match <code>AllowedOrigin</code> elements.
    /// </para></li><li><para>
    /// The request method (for example, GET, PUT, HEAD, and so on) or the <code>Access-Control-Request-Method</code>
    /// header in case of a pre-flight <code>OPTIONS</code> request must be one of the <code>AllowedMethod</code>
    /// elements. 
    /// </para></li><li><para>
    /// Every header specified in the <code>Access-Control-Request-Headers</code> request
    /// header of a pre-flight request must match an <code>AllowedHeader</code> element. 
    /// </para></li></ul><para>
    ///  For more information about CORS, go to <a href="https://docs.aws.amazon.com/AmazonS3/latest/dev/cors.html">Enabling
    /// Cross-Origin Resource Sharing</a> in the <i>Amazon S3 User Guide</i>.
    /// </para><para>
    /// The following operations are related to <code>PutBucketCors</code>:
    /// </para><ul><li><para><a href="https://docs.aws.amazon.com/AmazonS3/latest/API/API_GetBucketCors.html">GetBucketCors</a></para></li><li><para><a href="https://docs.aws.amazon.com/AmazonS3/latest/API/API_DeleteBucketCors.html">DeleteBucketCors</a></para></li><li><para><a href="https://docs.aws.amazon.com/AmazonS3/latest/API/RESTOPTIONSobject.html">RESTOPTIONSobject</a></para></li></ul>
    /// </summary>
    [Cmdlet("Write", "S3CORSConfiguration", SupportsShouldProcess = true, ConfirmImpact = ConfirmImpact.Medium)]
    [OutputType("None")]
    [AWSCmdlet("Calls the Amazon Simple Storage Service (S3) PutCORSConfiguration API operation.", Operation = new[] {"PutCORSConfiguration"}, SelectReturnType = typeof(Amazon.S3.Model.PutCORSConfigurationResponse))]
    [AWSCmdletOutput("None or Amazon.S3.Model.PutCORSConfigurationResponse",
        "This cmdlet does not generate any output." +
        "The service response (type Amazon.S3.Model.PutCORSConfigurationResponse) can be referenced from properties attached to the cmdlet entry in the $AWSHistory stack."
    )]
    public partial class WriteS3CORSConfigurationCmdlet : AmazonS3ClientCmdlet, IExecutor
    {
        
        #region Parameter BucketName
        /// <summary>
        /// <para>
        /// The name of the bucket to have the CORS configuration applied.
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(Position = 0, ValueFromPipelineByPropertyName = true, ValueFromPipeline = true)]
        public System.String BucketName { get; set; }
        #endregion
        
        #region Parameter ChecksumAlgorithm
        /// <summary>
        /// <para>
        /// <para>Indicates the algorithm used to create the checksum for the object. Amazon S3 will
        /// fail the request with a 400 error if there is no checksum associated with the object.
        /// For more information, see <a href="https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html">
        /// Checking object integrity</a> in the <i>Amazon S3 User Guide</i>.</para>
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        [AWSConstantClassSource("Amazon.S3.ChecksumAlgorithm")]
        public Amazon.S3.ChecksumAlgorithm ChecksumAlgorithm { get; set; }
        #endregion
        
        #region Parameter ExpectedBucketOwner
        /// <summary>
        /// <para>
        /// The account ID of the expected bucket owner. 
        /// If the bucket is owned by a different account, the request will fail with an HTTP 403 (Access Denied) error.
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        public System.String ExpectedBucketOwner { get; set; }
        #endregion
        
        #region Parameter Configuration_Rule
        /// <summary>
        /// <para>
        /// The collection of rules in this configuration.
        /// </para>
        /// </summary>
        [System.Management.Automation.Parameter(ValueFromPipelineByPropertyName = true)]
        [Alias("Configuration_Rules")]
        public Amazon.S3.Model.CORSRule[] Configuration_Rule { get; set; }
        #endregion
        
        #region Parameter Select
        /// <summary>
        /// Use the -Select parameter to control the cmdlet output. The cmdlet doesn't have a return value by default.
        /// Specifying -Select '*' will result in the cmdlet returning the whole service response (Amazon.S3.Model.PutCORSConfigurationResponse).
        /// 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; } = "*";
        #endregion
        
        #region Parameter PassThru
        /// <summary>
        /// Changes the cmdlet behavior to return the value passed to the BucketName parameter.
        /// The -PassThru parameter is deprecated, use -Select '^BucketName' instead. This parameter will be removed in a future version.
        /// </summary>
        [System.Obsolete("The -PassThru parameter is deprecated, use -Select '^BucketName' 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 = "s3";
            base.ProcessRecord();
            
            var resourceIdentifiersText = FormatParameterValuesForConfirmationMsg(nameof(this.BucketName), MyInvocation.BoundParameters);
            if (!ConfirmShouldProceed(this.Force.IsPresent, resourceIdentifiersText, "Write-S3CORSConfiguration (PutCORSConfiguration)"))
            {
                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.S3.Model.PutCORSConfigurationResponse, WriteS3CORSConfigurationCmdlet>(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.BucketName;
            }
            #pragma warning restore CS0618, CS0612 //A class member was marked with the Obsolete attribute
            context.BucketName = this.BucketName;
            context.ChecksumAlgorithm = this.ChecksumAlgorithm;
            if (this.Configuration_Rule != null)
            {
                context.Configuration_Rule = new List<Amazon.S3.Model.CORSRule>(this.Configuration_Rule);
            }
            context.ExpectedBucketOwner = this.ExpectedBucketOwner;
            
            // 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.S3.Model.PutCORSConfigurationRequest();
            
            if (cmdletContext.BucketName != null)
            {
                request.BucketName = cmdletContext.BucketName;
            }
            if (cmdletContext.ChecksumAlgorithm != null)
            {
                request.ChecksumAlgorithm = cmdletContext.ChecksumAlgorithm;
            }
            
             // populate Configuration
            var requestConfigurationIsNull = true;
            request.Configuration = new Amazon.S3.Model.CORSConfiguration();
            List<Amazon.S3.Model.CORSRule> requestConfiguration_configuration_Rule = null;
            if (cmdletContext.Configuration_Rule != null)
            {
                requestConfiguration_configuration_Rule = cmdletContext.Configuration_Rule;
            }
            if (requestConfiguration_configuration_Rule != null)
            {
                request.Configuration.Rules = requestConfiguration_configuration_Rule;
                requestConfigurationIsNull = false;
            }
             // determine if request.Configuration should be set to null
            if (requestConfigurationIsNull)
            {
                request.Configuration = null;
            }
            if (cmdletContext.ExpectedBucketOwner != null)
            {
                request.ExpectedBucketOwner = cmdletContext.ExpectedBucketOwner;
            }
            
            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.S3.Model.PutCORSConfigurationResponse CallAWSServiceOperation(IAmazonS3 client, Amazon.S3.Model.PutCORSConfigurationRequest request)
        {
            Utils.Common.WriteVerboseEndpointMessage(this, client.Config, "Amazon Simple Storage Service (S3)", "PutCORSConfiguration");
            try
            {
                #if DESKTOP
                return client.PutCORSConfiguration(request);
                #elif CORECLR
                return client.PutCORSConfigurationAsync(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 BucketName { get; set; }
            public Amazon.S3.ChecksumAlgorithm ChecksumAlgorithm { get; set; }
            public List<Amazon.S3.Model.CORSRule> Configuration_Rule { get; set; }
            public System.String ExpectedBucketOwner { get; set; }
            public System.Func<Amazon.S3.Model.PutCORSConfigurationResponse, WriteS3CORSConfigurationCmdlet, object> Select { get; set; } =
                (response, cmdlet) => null;
        }
        
    }
}