From 4791b139b83032dd5a404674f48489cb9b1c1f1f Mon Sep 17 00:00:00 2001
From: ig <ig ig@devnullmail.com>
Date: Fri, 8 Sep 2023 15:22:39 +0200
Subject: [PATCH] Do not crash when file is not available

---
 csharp/App/Backend/S3/S3Cmd.cs | 31 ++++++++++++++++++++-----------
 1 file changed, 20 insertions(+), 11 deletions(-)

diff --git a/csharp/App/Backend/S3/S3Cmd.cs b/csharp/App/Backend/S3/S3Cmd.cs
index 53305e963..29cc42fe6 100644
--- a/csharp/App/Backend/S3/S3Cmd.cs
+++ b/csharp/App/Backend/S3/S3Cmd.cs
@@ -1,5 +1,4 @@
 using System.Diagnostics.CodeAnalysis;
-using System.Drawing;
 using CliWrap;
 using CliWrap.Buffered;
 using InnovEnergy.Lib.Utils;
@@ -11,11 +10,11 @@ public class S3Cmd
 {
     private static readonly Command Python = Cli.Wrap("python3");
     
-    private const String? S3CmdPath    = "Resources/s3cmd.py";
-    private const String S3Prefix = "s3://";
-
-    public String Key { get; init; }
-    public String Secret { get; init; }
+    private const String? S3CmdPath = "Resources/s3cmd.py";
+    private const String  S3Prefix  = "s3://";
+    
+    public String Key    { get; init;} 
+    public String Secret { get; init;}
     public String Region { get; init; } = "sos-ch-dk-2.exo.io";
     
     // private String?[] DefaultArgs { get; }
@@ -50,7 +49,7 @@ public class S3Cmd
     {
         const String cors = "./Resources/CORS";
         
-        var result = await Run(bucketName, "mb");
+        var result  = await Run(bucketName, "mb");
         var setCors = await Run(bucketName, "setcors", cors);
         
         return result.ExitCode == 0 && setCors.ExitCode == 0;
@@ -62,10 +61,20 @@ public class S3Cmd
         return result.StandardOutput;
     }
     
-    public async Task<String[]> GetFileText(String bucketName, String filename)
+    public async Task<IReadOnlyList<String>?> GetFileLines(String bucketName, String filename)
     {
-        var result = await Run(bucketName + "/" + filename, "get", "--force");
-        return File.ReadAllLines("./" + filename);
+        try
+        {
+            await Run(bucketName + "/" + filename, "get", "--force");
+        }
+        catch
+        {
+            return null;
+        }
+        
+        var lines = File.ReadAllLines($"./{filename}");
+        File.Delete(filename);
+        return lines;
     }
     
     public async Task<Boolean> DeleteBucket(String bucketName)
@@ -76,7 +85,7 @@ public class S3Cmd
 
     private Task<BufferedCommandResult> Run(String bucketName, String operation, params String[] optionalArgs)
     {
-        var credentials = new String[]
+        var credentials = new[]
         {
             S3CmdPath,
             "--access_key", Key,