new working directory allows absolute paths; allow multiple proxies with named configs

src/ViteProxyApplicationBuilderExtensions.cs

@@ -8,40 +8,43 @@ namespace ViteProxy;
 
 public static class ViteProxyApplicationBuilderExtensions
 {
-  public static IApplicationBuilder UseViteStaticFiles(this IApplicationBuilder app)
+  /// <summary>
+  /// Provides static files from the vite working directory or a custom directory or from the named vite settings
+  /// </summary>
+  /// <param name="app">The app builder</param>
+  /// <param name="path">Provide a file path for static file delivery</param>
+  /// <param name="configName">When vite proxy is added via named options these can be used here for correct retrieval of the vite working directory</param>
+  /// <returns>The app builde</returns>
+  public static IApplicationBuilder UseViteStaticFiles(this IApplicationBuilder app, string path = null, string configName = null)
   {
     IWebHostEnvironment env = app.ApplicationServices.GetRequiredService<IWebHostEnvironment>();
-    IOptions<ViteProxyOptions> options = app.ApplicationServices.GetRequiredService<IOptions<ViteProxyOptions>>();
-    string workingDirectory = (options.Value.WorkingDirectory ?? String.Empty).Trim('/');
 
-    if (workingDirectory == null)
+    if (path == null && configName == null)
     {
-      return app;
+      IOptions<ViteProxyOptions> options = app.ApplicationServices.GetRequiredService<IOptions<ViteProxyOptions>>();
+      path = options.Value.WorkingDirectory;
     }
 
-    app.UseStaticFiles();
+    if (configName != null)
-    app.UseStaticFiles(new StaticFileOptions
     {
-      FileProvider = new PhysicalFileProvider(Path.Combine(env.ContentRootPath, workingDirectory))
+      using IServiceScope scope = app.ApplicationServices.CreateScope();
-    });
+      IOptionsSnapshot<ViteProxyOptions> optionsSnapschat = scope.ServiceProvider.GetRequiredService<IOptionsSnapshot<ViteProxyOptions>>();
-
+      ViteProxyOptions options = optionsSnapschat.Get(configName);
-    return app;
+      path = options.WorkingDirectory;
-  }
+    }
-
-
-  public static IApplicationBuilder UseViteStaticFiles(this IApplicationBuilder app, string path)
-  {
-    IWebHostEnvironment env = app.ApplicationServices.GetRequiredService<IWebHostEnvironment>();
 
     if (path == null)
     {
       return app;
     }
 
+    // TODO build full path
+    ViteWorkingDirectory workingDirectory = new(env, path);
+
     app.UseStaticFiles();
     app.UseStaticFiles(new StaticFileOptions
     {
-      FileProvider = new PhysicalFileProvider(Path.Combine(env.ContentRootPath, path))
+      FileProvider = new PhysicalFileProvider(workingDirectory.Path)
     });
 
     return app;

src/ViteProxyService.cs

@@ -8,15 +8,17 @@ namespace ViteProxy;
 public class ViteProxyService : IHostedService
 {
   ViteProxyOptions options;
+  ViteWorkingDirectory workingDirectory;
   ILogger<ViteProxyService> logger;
-  string workingDirectory;
   bool isRunning = false;
 
 
-  public ViteProxyService(IWebHostEnvironment env, ILogger<ViteProxyService> logger, IOptions<ViteProxyOptions> options)
+  public ViteProxyService(IWebHostEnvironment env, ILogger<ViteProxyService> logger, IOptions<ViteProxyOptions> options) : this(env, logger, options.Value ?? new()) { }
+
+  public ViteProxyService(IWebHostEnvironment env, ILogger<ViteProxyService> logger, ViteProxyOptions options)
   {
-    this.options = options.Value ?? new();
+    this.options = options ?? new();   
-    this.workingDirectory = Path.Combine(env.ContentRootPath, (this.options.WorkingDirectory ?? String.Empty).Trim('/'));
+    this.workingDirectory = new ViteWorkingDirectory(env, options.WorkingDirectory);
     this.logger = logger;
   }
 
@@ -30,16 +32,11 @@ public class ViteProxyService : IHostedService
     }
 
     // locate npm version and throw if it is not installed
-    Version npmVersion = await FindNpmVersion();
+    Version npmVersion = await FindNpmVersion() ?? throw new Exception("Please install node+npm to use the vite dev service (https://www.npmjs.com/)");
-
-    if (npmVersion == null)
-    {
-      throw new Exception("Please install node+npm to use the vite dev service (https://www.npmjs.com/)");
-    }
 
     // start vite server
     ProcessProxy viteProcess = await StartDevServer(options.Port);
-    logger.LogInformation("vite listening on: http://localhost:{port}", options.Port);
+    logger.LogInformation("vite listening on: http://localhost:{port} (path: {workingDirectory})", options.Port, this.workingDirectory.Path);
   }
 
   public Task StopAsync(CancellationToken cancellationToken)
@@ -55,7 +52,7 @@ public class ViteProxyService : IHostedService
   {
     Version version = null;
 
-    ProcessProxy process = new ProcessProxy(workingDirectory, "npm").Argument("-v").Capture((value, err) =>
+    ProcessProxy process = new ProcessProxy(workingDirectory.Path, "npm").Argument("-v").Capture((value, err) =>
     {
       if (version == null && !value.Contains("not recognized") && Version.TryParse(value, out Version _version))
       {
@@ -79,7 +76,7 @@ public class ViteProxyService : IHostedService
     PidUtils.KillPort((ushort)port, true);
 
     // create and run the vite script
-    ProcessProxy process = new ProcessProxy(workingDirectory, "npm", options.ForwardLog)
+    ProcessProxy process = new ProcessProxy(workingDirectory.Path, "npm", options.ForwardLog)
       .Argument("run " + options.ScriptName)
       .EnvVar("PORT", port.ToString())
       .Capture(CaptureLog);

src/ViteProxyServiceCollectionExtensions.cs

@@ -1,5 +1,8 @@
-using Microsoft.Extensions.Configuration;
+using Microsoft.AspNetCore.Hosting;
+using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Microsoft.Extensions.Options;
 
 namespace ViteProxy;
 
@@ -28,12 +31,16 @@ public static class ViteProxyServiceCollectionExtensions
   }
 
 
-  public static IServiceCollection AddViteProxy(this IServiceCollection services, IConfiguration namedConfigurationSection)
+  public static IServiceCollection AddViteProxy(this IServiceCollection services, string configName, IConfiguration namedConfigurationSection)
   {
     services.AddLogging();
     services.AddOptions();
-    services.AddHostedService<ViteProxyService>();
+    services.AddHostedService((svc) => new ViteProxyService(
-    services.AddOptions<ViteProxyOptions>().Bind(namedConfigurationSection);
+      env: svc.GetService<IWebHostEnvironment>(), 
+      logger: svc.GetService<ILogger<ViteProxyService>>(),
+      options: svc.GetService<IOptionsSnapshot<ViteProxyOptions>>().Get(configName)
+    ));
+    services.AddOptions<ViteProxyOptions>(configName).Bind(namedConfigurationSection);
 
     return services;
   }

src/ViteWorkingDirectory.cs

@@ -0,0 +1,25 @@
+using Microsoft.AspNetCore.Hosting;
+
+namespace ViteProxy;
+
+internal class ViteWorkingDirectory
+{
+  public string Path { get; protected set; }
+
+  public string InputPath { get; protected set; }
+
+  public ViteWorkingDirectory(IWebHostEnvironment env, string inputPath)
+  {
+    InputPath = inputPath;
+    string path = inputPath.Replace('\\', '/').Trim().TrimEnd('/');
+
+    if (System.IO.Path.IsPathFullyQualified(path))
+    {
+      Path = path;
+    }
+    else 
+    {
+      Path = System.IO.Path.Combine(env.ContentRootPath, path);
+    }
+  }
+}