Add download cleaner and dry run (#58)

code/Infrastructure/Interceptors/DryRunInterceptor.cs

@@ -0,0 +1,49 @@
+using System.Reflection;
+using Castle.DynamicProxy;
+using Common.Attributes;
+using Common.Configuration.General;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
+
+namespace Infrastructure.Interceptors;
+
+public class DryRunAsyncInterceptor : AsyncInterceptorBase
+{
+    private readonly ILogger<DryRunAsyncInterceptor> _logger;
+    private readonly DryRunConfig _config;
+    
+    public DryRunAsyncInterceptor(ILogger<DryRunAsyncInterceptor> logger, IOptions<DryRunConfig> config)
+    {
+        _logger = logger;
+        _config = config.Value;
+    }
+    
+    protected override async Task InterceptAsync(IInvocation invocation, IInvocationProceedInfo proceedInfo, Func<IInvocation, IInvocationProceedInfo, Task> proceed)
+    {
+        MethodInfo? method = invocation.MethodInvocationTarget ?? invocation.Method;
+        if (IsDryRun(method))
+        {
+            _logger.LogInformation("[DRY RUN] skipping method: {name}", method.Name);
+            return;
+        }
+
+        await proceed(invocation, proceedInfo);
+    }
+
+    protected override async Task<TResult> InterceptAsync<TResult>(IInvocation invocation, IInvocationProceedInfo proceedInfo, Func<IInvocation, IInvocationProceedInfo, Task<TResult>> proceed)
+    {
+        MethodInfo? method = invocation.MethodInvocationTarget ?? invocation.Method;
+        if (IsDryRun(method))
+        {
+            _logger.LogInformation("[DRY RUN] skipping method: {name}", method.Name);
+            return default!;
+        }
+
+        return await proceed(invocation, proceedInfo);
+    }
+
+    private bool IsDryRun(MethodInfo method)
+    {
+        return method.GetCustomAttributes(typeof(DryRunSafeguardAttribute), true).Any() && _config.IsDryRun;
+    }
+}

code/Infrastructure/Interceptors/IDryRunService.cs

@@ -0,0 +1,5 @@
+namespace Infrastructure.Interceptors;
+
+public interface IDryRunService : IInterceptedService
+{
+}

code/Infrastructure/Interceptors/IInterceptedService.cs

@@ -0,0 +1,6 @@
+namespace Infrastructure.Interceptors;
+
+public interface IInterceptedService
+{
+    public object Proxy { get; set; }
+}

code/Infrastructure/Interceptors/InterceptedService.cs

@@ -0,0 +1,21 @@
+namespace Infrastructure.Interceptors;
+
+public class InterceptedService : IInterceptedService
+{
+    private object? _proxy;
+
+    public object Proxy
+    {
+        get
+        {
+            if (_proxy is null)
+            {
+                throw new Exception("Proxy is not set");
+            }
+
+            return _proxy;
+        }
+        
+        set => _proxy = value;
+    }
+}