Refactor project files for improved readability and structure

- Cleaned up whitespace in Directory.Build.props and Directory.Packages.props for consistency.
- Reformatted project file references in PnvPanel.Api.csproj for better clarity.
- Enhanced code readability in various endpoint files by adjusting line breaks and indentation.
- Standardized method signatures and improved formatting in ResultExtensions and multiple endpoint classes for better maintainability.

backend/src/PnvPanel.Application/Subscriptions/GetConfigSubscriptionQueryHandler.cs

@@ -6,17 +6,31 @@ using PnvPanel.Domain.Configs;
 
 namespace PnvPanel.Application.Subscriptions;
 
-public sealed class GetConfigSubscriptionQueryHandler(IAppDbContext dbContext, IXuiPanelGateway gateway)
-    : IQueryHandler<GetConfigSubscriptionQuery, Result<SubscriptionDto>>
+public sealed class GetConfigSubscriptionQueryHandler(
+    IAppDbContext dbContext,
+    IXuiPanelGateway gateway
+) : IQueryHandler<GetConfigSubscriptionQuery, Result<SubscriptionDto>>
 {
-    public async Task<Result<SubscriptionDto>> Handle(GetConfigSubscriptionQuery query, CancellationToken cancellationToken)
+    public async Task<Result<SubscriptionDto>> Handle(
+        GetConfigSubscriptionQuery query,
+        CancellationToken cancellationToken
+    )
     {
-        var config = await dbContext.VpnConfigs.AsNoTracking()
-            .FirstOrDefaultAsync(c => c.SubscriptionToken == query.Token && c.Status == ConfigStatus.Active, cancellationToken);
+        var config = await dbContext
+            .VpnConfigs.AsNoTracking()
+            .FirstOrDefaultAsync(
+                c => c.SubscriptionToken == query.Token && c.Status == ConfigStatus.Active,
+                cancellationToken
+            );
 
         if (config is null)
             return Result.Failure<SubscriptionDto>(SubscriptionErrors.NotFound);
 
-        return await SubscriptionAssembler.BuildAsync([config], dbContext, gateway, cancellationToken);
+        return await SubscriptionAssembler.BuildAsync(
+            [config],
+            dbContext,
+            gateway,
+            cancellationToken
+        );
     }
 }

backend/src/PnvPanel.Application/Subscriptions/GetUserSubscriptionQueryHandler.cs

@@ -6,19 +6,34 @@ using PnvPanel.Domain.Configs;
 
 namespace PnvPanel.Application.Subscriptions;
 
-public sealed class GetUserSubscriptionQueryHandler(IAppDbContext dbContext, IIdentityService identityService, IXuiPanelGateway gateway)
-    : IQueryHandler<GetUserSubscriptionQuery, Result<SubscriptionDto>>
+public sealed class GetUserSubscriptionQueryHandler(
+    IAppDbContext dbContext,
+    IIdentityService identityService,
+    IXuiPanelGateway gateway
+) : IQueryHandler<GetUserSubscriptionQuery, Result<SubscriptionDto>>
 {
-    public async Task<Result<SubscriptionDto>> Handle(GetUserSubscriptionQuery query, CancellationToken cancellationToken)
+    public async Task<Result<SubscriptionDto>> Handle(
+        GetUserSubscriptionQuery query,
+        CancellationToken cancellationToken
+    )
     {
-        var userId = await identityService.FindUserIdBySubscriptionTokenAsync(query.Token, cancellationToken);
+        var userId = await identityService.FindUserIdBySubscriptionTokenAsync(
+            query.Token,
+            cancellationToken
+        );
         if (userId is null)
             return Result.Failure<SubscriptionDto>(SubscriptionErrors.NotFound);
 
-        var configs = await dbContext.VpnConfigs.AsNoTracking()
+        var configs = await dbContext
+            .VpnConfigs.AsNoTracking()
             .Where(c => c.UserId == userId && c.Status == ConfigStatus.Active)
             .ToListAsync(cancellationToken);
 
-        return await SubscriptionAssembler.BuildAsync(configs, dbContext, gateway, cancellationToken);
+        return await SubscriptionAssembler.BuildAsync(
+            configs,
+            dbContext,
+            gateway,
+            cancellationToken
+        );
     }
 }

backend/src/PnvPanel.Application/Subscriptions/SubscriptionAssembler.cs

@@ -9,7 +9,11 @@ namespace PnvPanel.Application.Subscriptions;
 internal static class SubscriptionAssembler
 {
     public static async Task<Result<SubscriptionDto>> BuildAsync(
-        IReadOnlyList<VpnConfig> configs, IAppDbContext dbContext, IXuiPanelGateway gateway, CancellationToken cancellationToken)
+        IReadOnlyList<VpnConfig> configs,
+        IAppDbContext dbContext,
+        IXuiPanelGateway gateway,
+        CancellationToken cancellationToken
+    )
     {
         var lines = new List<string>();
         long usedUp = 0;
@@ -18,18 +22,26 @@ internal static class SubscriptionAssembler
 
         foreach (var config in configs)
         {
-            var inbound = await dbContext.Inbounds.AsNoTracking()
+            var inbound = await dbContext
+                .Inbounds.AsNoTracking()
                 .FirstOrDefaultAsync(i => i.Id == config.InboundId, cancellationToken);
             if (inbound is null)
                 continue;
 
-            var node = await dbContext.Nodes.AsNoTracking()
+            var node = await dbContext
+                .Nodes.AsNoTracking()
                 .FirstOrDefaultAsync(n => n.Id == inbound.NodeId, cancellationToken);
             if (node is null || !node.IsEnabled)
                 continue;
 
             var linkResult = await gateway.BuildConnectionStringAsync(
-                node, inbound, config.ClientExternalId, config.Label ?? config.ClientEmail, node.BaseAddress.Host, cancellationToken);
+                node,
+                inbound,
+                config.ClientExternalId,
+                config.Label ?? config.ClientEmail,
+                node.BaseAddress.Host,
+                cancellationToken
+            );
 
             if (linkResult.IsSuccess)
                 lines.Add(linkResult.Value);

backend/src/PnvPanel.Application/Subscriptions/SubscriptionDto.cs

@@ -1,4 +1,8 @@
 namespace PnvPanel.Application.Subscriptions;
 
 public sealed record SubscriptionDto(
-    IReadOnlyList<string> ConnectionStrings, long UsedUpBytes, long UsedDownBytes, DateTimeOffset? ExpiresAt);
+    IReadOnlyList<string> ConnectionStrings,
+    long UsedUpBytes,
+    long UsedDownBytes,
+    DateTimeOffset? ExpiresAt
+);

backend/src/PnvPanel.Application/Subscriptions/SubscriptionErrors.cs

@@ -4,5 +4,8 @@ namespace PnvPanel.Application.Subscriptions;
 
 public static class SubscriptionErrors
 {
-    public static readonly Error NotFound = Error.NotFound("Subscription.NotFound", "Подписка не найдена.");
+    public static readonly Error NotFound = Error.NotFound(
+        "Subscription.NotFound",
+        "Подписка не найдена."
+    );
 }