From af5f578f8358fa48b880f1a8fac581858f9d8217 Mon Sep 17 00:00:00 2001
From: saingchildren <saingchildren@gmail.com>
Date: Thu, 23 Apr 2026 18:01:37 +0800
Subject: [PATCH] s3 init

---
 .../AWS_Practice.Server.csproj                |  2 ++
 .../Controllers/ImagesController.cs           | 33 +++++++++++++++++++
 AWS_Practice.Server/Program.cs                | 12 +++++++
 .../appsettings.Development.json              |  4 +++
 AWS_Practice.Server/appsettings.json          |  6 +++-
 5 files changed, 56 insertions(+), 1 deletion(-)
 create mode 100644 AWS_Practice.Server/Controllers/ImagesController.cs

diff --git a/AWS_Practice.Server/AWS_Practice.Server.csproj b/AWS_Practice.Server/AWS_Practice.Server.csproj
index 59f9269..76d4618 100644
--- a/AWS_Practice.Server/AWS_Practice.Server.csproj
+++ b/AWS_Practice.Server/AWS_Practice.Server.csproj
@@ -11,6 +11,8 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="AWSSDK.Extensions.NETCore.Setup" Version="4.0.3.34" />
+    <PackageReference Include="AWSSDK.S3" Version="4.0.22" />
     <PackageReference Include="Microsoft.AspNetCore.SpaProxy">
       <Version>8.*-*</Version>
     </PackageReference>
diff --git a/AWS_Practice.Server/Controllers/ImagesController.cs b/AWS_Practice.Server/Controllers/ImagesController.cs
new file mode 100644
index 0000000..9686955
--- /dev/null
+++ b/AWS_Practice.Server/Controllers/ImagesController.cs
@@ -0,0 +1,33 @@
+using Amazon.S3;
+using Microsoft.AspNetCore.Mvc;
+
+namespace AWS_Practice.Server.Controllers
+{
+    [ApiController]
+    [Route("api/[controller]")]
+    public class ImagesController : ControllerBase
+    {
+        private readonly IAmazonS3 _s3;
+        private readonly string _bucket;
+
+        public ImagesController(IAmazonS3 s3, IConfiguration configuration)
+        {
+            _s3 = s3;
+            _bucket = configuration["AWS:BucketName"]!;
+        }
+
+        [HttpGet("{*key}")]
+        public async Task<IActionResult> Get(string key, CancellationToken ct)
+        {
+            try
+            {
+                var response = await _s3.GetObjectAsync(_bucket, key, ct);
+                return File(response.ResponseStream, response.Headers.ContentType ?? "application/octet-stream");
+            }
+            catch (AmazonS3Exception ex) when (ex.StatusCode == System.Net.HttpStatusCode.NotFound)
+            {
+                return NotFound();
+            }
+        }
+    }
+}
diff --git a/AWS_Practice.Server/Program.cs b/AWS_Practice.Server/Program.cs
index 1da74a0..6f71354 100644
--- a/AWS_Practice.Server/Program.cs
+++ b/AWS_Practice.Server/Program.cs
@@ -1,3 +1,7 @@
+using Amazon;
+using Amazon.Runtime;
+using Amazon.S3;
+
 var builder = WebApplication.CreateBuilder(args);
 
 // Add services to the container.
@@ -7,6 +11,14 @@ builder.Services.AddControllers();
 builder.Services.AddEndpointsApiExplorer();
 builder.Services.AddSwaggerGen();
 
+builder.Services.AddSingleton<IAmazonS3>(_ =>
+{
+    var aws = builder.Configuration.GetSection("AWS");
+    return new AmazonS3Client(
+        new BasicAWSCredentials(aws["AccessKey"], aws["SecretKey"]),
+        RegionEndpoint.GetBySystemName(aws["Region"]));
+});
+
 var app = builder.Build();
 
 app.UseDefaultFiles();
diff --git a/AWS_Practice.Server/appsettings.Development.json b/AWS_Practice.Server/appsettings.Development.json
index 0c208ae..952ec69 100644
--- a/AWS_Practice.Server/appsettings.Development.json
+++ b/AWS_Practice.Server/appsettings.Development.json
@@ -4,5 +4,9 @@
       "Default": "Information",
       "Microsoft.AspNetCore": "Warning"
     }
+  },
+  "AWS": {
+    "AccessKey": "",
+    "SecretKey": ""
   }
 }
diff --git a/AWS_Practice.Server/appsettings.json b/AWS_Practice.Server/appsettings.json
index 10f68b8..cd89ad1 100644
--- a/AWS_Practice.Server/appsettings.json
+++ b/AWS_Practice.Server/appsettings.json
@@ -5,5 +5,9 @@
       "Microsoft.AspNetCore": "Warning"
     }
   },
-  "AllowedHosts": "*"
+  "AllowedHosts": "*",
+  "AWS": {
+    "Region": "us-east-1",
+    "BucketName": "saingchildren-s3"
+  }
 }