﻿// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier:  Apache-2.0

/// <summary>
/// This example shows how to restore an archived object in an Amazon
/// Simple Storage Service (Amazon S3) bucket. The example was created
/// using the AWS SDK for .NET version 3.7 and .NET Core 5.0.
/// </summary>
namespace RestoreArchivedObjectExample
{
    // snippet-start:[S3.dotnetv3.RestoreArchivedObjectExample]
    using System;
    using System.Threading.Tasks;
    using Amazon;
    using Amazon.S3;
    using Amazon.S3.Model;

    public class RestoreArchivedObject
    {
        public static void Main()
        {
            string bucketName = "doc-example-bucket";
            string objectKey = "archived-object.txt";

            // Specify your bucket region (an example region is shown).
            RegionEndpoint bucketRegion = RegionEndpoint.USWest2;

            IAmazonS3 client = new AmazonS3Client(bucketRegion);
            RestoreObjectAsync(client, bucketName, objectKey).Wait();
        }

        /// <summary>
        /// This method restores an archived object from an Amazon S3 bucket.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used to call
        /// RestoreObjectAsync.</param>
        /// <param name="bucketName">A string representing the name of the
        /// bucket where the object was located before it was archived.</param>
        /// <param name="objectKey">A string representing the name of the
        /// archived object to restore.</param>
        public static async Task RestoreObjectAsync(IAmazonS3 client, string bucketName, string objectKey)
        {
            try
            {
                var restoreRequest = new RestoreObjectRequest
                {
                    BucketName = bucketName,
                    Key = objectKey,
                    Days = 2,
                };
                RestoreObjectResponse response = await client.RestoreObjectAsync(restoreRequest);

                // Check the status of the restoration.
                await CheckRestorationStatusAsync(client, bucketName, objectKey);
            }
            catch (AmazonS3Exception amazonS3Exception)
            {
                Console.WriteLine($"Error: {amazonS3Exception.Message}");
            }
        }

        /// <summary>
        /// This method retrieves the status of the object's restoration.
        /// </summary>
        /// <param name="client">The initialized Amazon S3 client object used to call
        /// GetObjectMetadataAsync.</param>
        /// <param name="bucketName">A string representing the name of the Amazon
        /// S3 bucket which contains the archived object.</param>
        /// <param name="objectKey">A string representing the name of the
        /// archived object you want to restore.</param>
        public static async Task CheckRestorationStatusAsync(IAmazonS3 client, string bucketName, string objectKey)
        {
            GetObjectMetadataRequest metadataRequest = new()
            {
                BucketName = bucketName,
                Key = objectKey,
            };

            GetObjectMetadataResponse response = await client.GetObjectMetadataAsync(metadataRequest);

            var restStatus = response.RestoreInProgress ? "in-progress" : "finished or failed";
            Console.WriteLine($"Restoration status: {restStatus}");
        }
    }

    // snippet-end:[S3.dotnetv3.RestoreArchivedObjectExample]
}
