fix: add Next.js API route handler to proxy with correct host headers

backend/internal/api/middleware/tenant.go

@@ -2,6 +2,7 @@ package middleware
 
 import (
 	"context"
+	"log"
 	"net/http"
 	"strings"
 
@@ -17,7 +18,16 @@ const SubdomainKey tenantContextKey = "subdomain"
 func TenantDetector(tenantRepo *repository.TenantRepository) func(http.Handler) http.Handler {
 	return func(next http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			host := r.Host
+			// Get host from X-Forwarded-Host header (set by Next.js proxy) or Host header
+			host := r.Header.Get("X-Forwarded-Host")
+			if host == "" {
+				host = r.Header.Get("X-Original-Host")
+			}
+			if host == "" {
+				host = r.Host
+			}
+			
+			log.Printf("TenantDetector: host = %s (from headers), path = %s", host, r.RequestURI)
 			
 			// Extract subdomain
 			// Examples:
@@ -39,6 +49,8 @@ func TenantDetector(tenantRepo *repository.TenantRepository) func(http.Handler)
 				}
 			}
 			
+			log.Printf("TenantDetector: extracted subdomain = %s", subdomain)
+			
 			// Add subdomain to context
 			ctx := context.WithValue(r.Context(), SubdomainKey, subdomain)
 			
@@ -46,7 +58,10 @@ func TenantDetector(tenantRepo *repository.TenantRepository) func(http.Handler)
 			if subdomain != "" && subdomain != "dash" && subdomain != "api" && subdomain != "localhost" {
 				tenant, err := tenantRepo.FindBySubdomain(subdomain)
 				if err == nil && tenant != nil {
+					log.Printf("TenantDetector: found tenant %s for subdomain %s", tenant.ID.String(), subdomain)
 					ctx = context.WithValue(ctx, TenantIDKey, tenant.ID.String())
+				} else {
+					log.Printf("TenantDetector: tenant not found for subdomain %s (err=%v)", subdomain, err)
 				}
 			}
 			

front-end-dash.aggios.app/app/api/[...path]/route.ts

@@ -0,0 +1,77 @@
+import { NextRequest, NextResponse } from "next/server";
+
+export async function GET(req: NextRequest, { params }: { params: { path: string[] } }) {
+    const path = params.path?.join("/") || "";
+    const token = req.headers.get("authorization");
+    const host = req.headers.get("host");
+
+    try {
+        const response = await fetch(`http://backend:8080/api/${path}${req.nextUrl.search}`, {
+            method: "GET",
+            headers: {
+                "Authorization": token || "",
+                "Content-Type": "application/json",
+                "X-Forwarded-Host": host || "",
+                "X-Original-Host": host || "",
+            },
+        });
+
+        const data = await response.json();
+        return NextResponse.json(data, { status: response.status });
+    } catch (error) {
+        console.error("API proxy error:", error);
+        return NextResponse.json({ error: "Internal Server Error" }, { status: 500 });
+    }
+}
+
+export async function PUT(req: NextRequest, { params }: { params: { path: string[] } }) {
+    const path = params.path?.join("/") || "";
+    const token = req.headers.get("authorization");
+    const host = req.headers.get("host");
+    const body = await req.json();
+
+    try {
+        const response = await fetch(`http://backend:8080/api/${path}${req.nextUrl.search}`, {
+            method: "PUT",
+            headers: {
+                "Authorization": token || "",
+                "Content-Type": "application/json",
+                "X-Forwarded-Host": host || "",
+                "X-Original-Host": host || "",
+            },
+            body: JSON.stringify(body),
+        });
+
+        const data = await response.json();
+        return NextResponse.json(data, { status: response.status });
+    } catch (error) {
+        console.error("API proxy error:", error);
+        return NextResponse.json({ error: "Internal Server Error" }, { status: 500 });
+    }
+}
+
+export async function POST(req: NextRequest, { params }: { params: { path: string[] } }) {
+    const path = params.path?.join("/") || "";
+    const token = req.headers.get("authorization");
+    const host = req.headers.get("host");
+    const body = await req.json();
+
+    try {
+        const response = await fetch(`http://backend:8080/api/${path}${req.nextUrl.search}`, {
+            method: "POST",
+            headers: {
+                "Authorization": token || "",
+                "Content-Type": "application/json",
+                "X-Forwarded-Host": host || "",
+                "X-Original-Host": host || "",
+            },
+            body: JSON.stringify(body),
+        });
+
+        const data = await response.json();
+        return NextResponse.json(data, { status: response.status });
+    } catch (error) {
+        console.error("API proxy error:", error);
+        return NextResponse.json({ error: "Internal Server Error" }, { status: 500 });
+    }
+}

front-end-dash.aggios.app/next.config.ts

@@ -10,10 +10,29 @@ const nextConfig: NextConfig = {
         {
           source: "/api/:path*",
           destination: "http://backend:8080/api/:path*",
+          has: [
+            {
+              type: "header",
+              key: "X-Forwarded-Host",
+            },
+          ],
         },
       ],
     };
   },
+  headers: async () => {
+    return [
+      {
+        source: "/api/:path*",
+        headers: [
+          {
+            key: "X-Forwarded-For",
+            value: "127.0.0.1",
+          },
+        ],
+      },
+    ];
+  },
 };
 
 export default nextConfig;