[2.x] Added IsHealthy() method on HttpGateway

InertiaCore/Models/InertiaOptions.cs

@@ -6,5 +6,7 @@ public class InertiaOptions
 
     public bool SsrEnabled { get; set; } = false;
     public string SsrUrl { get; set; } = "http://127.0.0.1:13714/render";
+    public bool SsrEnsureBundleExists { get; set; } = true;
+    public string? SsrBundlePath { get; set; }
     public bool EncryptHistory { get; set; } = false;
 }

InertiaCore/ResponseFactory.cs

@@ -59,7 +59,7 @@ public Response Render(string component, object? props = null)
 
     public async Task<IHtmlContent> Head(dynamic model)
     {
-        if (!_options.Value.SsrEnabled) return new HtmlString("");
+        if (!_options.Value.SsrEnabled || !_gateway.ShouldDispatch()) return new HtmlString("");
 
         var context = _contextAccessor.HttpContext!;
 
@@ -74,7 +74,7 @@ public async Task<IHtmlContent> Head(dynamic model)
 
     public async Task<IHtmlContent> Html(dynamic model)
     {
-        if (_options.Value.SsrEnabled)
+        if (_options.Value.SsrEnabled && _gateway.ShouldDispatch())
         {
             var context = _contextAccessor.HttpContext!;
 

InertiaCore/Ssr/Gateway.cs

@@ -2,19 +2,26 @@
 using System.Text;
 using System.Text.Json;
 using System.Text.Json.Serialization;
+using InertiaCore.Models;
+using Microsoft.Extensions.Options;
+using Microsoft.AspNetCore.Hosting;
 
 namespace InertiaCore.Ssr;
 
-internal interface IGateway
+internal interface IGateway : IHasHealthCheck
 {
     public Task<SsrResponse?> Dispatch(object model, string url);
+    public bool ShouldDispatch();
 }
 
 internal class Gateway : IGateway
 {
     private readonly IHttpClientFactory _httpClientFactory;
+    private readonly IOptions<InertiaOptions> _options;
+    private readonly IWebHostEnvironment _environment;
 
-    public Gateway(IHttpClientFactory httpClientFactory) => _httpClientFactory = httpClientFactory;
+    public Gateway(IHttpClientFactory httpClientFactory, IOptions<InertiaOptions> options, IWebHostEnvironment environment) =>
+        (_httpClientFactory, _options, _environment) = (httpClientFactory, options, environment);
 
     public async Task<SsrResponse?> Dispatch(dynamic model, string url)
     {
@@ -30,4 +37,74 @@ internal class Gateway : IGateway
         var response = await client.PostAsync(url, content);
         return await response.Content.ReadFromJsonAsync<SsrResponse>();
     }
+
+    public bool ShouldDispatch()
+    {
+        return !_options.Value.SsrEnsureBundleExists || BundleExists();
+    }
+
+    private bool BundleExists()
+    {
+        var overridePath = _options.Value.SsrBundlePath;
+        if (!string.IsNullOrEmpty(overridePath))
+        {
+            var resolvedOverride = ResolvePath(overridePath);
+            if (!string.IsNullOrEmpty(resolvedOverride) && File.Exists(resolvedOverride))
+            {
+                return true;
+            }
+        }
+
+        var commonBundlePaths = new[]
+        {
+            "~/public/js/ssr.js",
+            "~/public/build/ssr.js",
+            "~/wwwroot/js/ssr.js",
+            "~/wwwroot/build/ssr.js",
+            "~/dist/ssr.js",
+            "~/build/ssr.js"
+        };
+
+        foreach (var path in commonBundlePaths)
+        {
+            var resolvedPath = ResolvePath(path);
+            if (!string.IsNullOrEmpty(resolvedPath) && File.Exists(resolvedPath))
+            {
+                return true;
+            }
+        }
+
+        return false;
+    }
+
+    private string? ResolvePath(string path)
+    {
+        if (path.StartsWith("~/"))
+        {
+            return Path.Combine(_environment.ContentRootPath, path[2..]);
+        }
+        return Path.IsPathRooted(path) ? path : Path.Combine(_environment.ContentRootPath, path);
+    }
+
+    public async Task<bool> IsHealthy()
+    {
+        try
+        {
+            var healthUrl = GetUrl("/health");
+            var client = _httpClientFactory.CreateClient();
+
+            using var response = await client.GetAsync(healthUrl);
+            return response.IsSuccessStatusCode;
+        }
+        catch
+        {
+            return false;
+        }
+    }
+
+    private string GetUrl(string endpoint)
+    {
+        var baseUrl = _options.Value.SsrUrl.TrimEnd('/');
+        return $"{baseUrl}{endpoint}";
+    }
 }

InertiaCore/Ssr/IHasHealthCheck.cs

@@ -0,0 +1,6 @@
+namespace InertiaCore.Ssr;
+
+internal interface IHasHealthCheck
+{
+    public Task<bool> IsHealthy();
+}

InertiaCoreTests/Setup.cs

@@ -8,6 +8,7 @@
 using Microsoft.AspNetCore.Mvc.Abstractions;
 using Microsoft.AspNetCore.Routing;
 using Microsoft.Extensions.Options;
+using Microsoft.AspNetCore.Hosting;
 using Moq;
 
 namespace InertiaCoreTests;
@@ -21,11 +22,14 @@ public void Setup()
     {
         var contextAccessor = new Mock<IHttpContextAccessor>();
         var httpClientFactory = new Mock<IHttpClientFactory>();
+        var environment = new Mock<IWebHostEnvironment>();
+        environment.SetupGet(x => x.ContentRootPath).Returns(Path.GetTempPath());
 
-        var gateway = new Gateway(httpClientFactory.Object);
         var options = new Mock<IOptions<InertiaOptions>>();
         options.SetupGet(x => x.Value).Returns(new InertiaOptions());
 
+        var gateway = new Gateway(httpClientFactory.Object, options.Object, environment.Object);
+
         _factory = new ResponseFactory(contextAccessor.Object, gateway, options.Object);
     }