add model identities and restore httpx router

backend/internal/httpx/router.go

@@ -0,0 +1,70 @@
+package httpx
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+	"senlinai-agent/backend/internal/config"
+	"senlinai-agent/backend/internal/logic/auth"
+)
+
+type RouteRegistrar interface {
+	Register(router gin.IRouter)
+}
+
+func NewRouter(cfg config.Config, registrars ...RouteRegistrar) *gin.Engine {
+	return newRouter(cfg, nil, registrars...)
+}
+
+func NewProtectedRouter(cfg config.Config, tokenVerifier func(string) (uint, error), registrars ...RouteRegistrar) *gin.Engine {
+	return newRouter(cfg, tokenVerifier, registrars...)
+}
+
+func newRouter(cfg config.Config, tokenVerifier func(string) (uint, error), registrars ...RouteRegistrar) *gin.Engine {
+	if cfg.Env == "test" {
+		gin.SetMode(gin.TestMode)
+	}
+
+	router := gin.New()
+	router.Use(gin.Recovery())
+	router.Use(cors())
+
+	router.GET("/healthz", func(c *gin.Context) {
+		c.JSON(http.StatusOK, gin.H{"status": "ok"})
+	})
+	api := router.Group("/api")
+	if tokenVerifier != nil {
+		api.Use(auth.RequireUser(tokenVerifier))
+	}
+	for _, registrar := range registrars {
+		registrar.Register(api)
+	}
+
+	return router
+}
+
+func cors() gin.HandlerFunc {
+	allowedOrigins := map[string]bool{
+		"http://localhost:5173":  true,
+		"http://127.0.0.1:5173":  true,
+		"http://tauri.localhost": true,
+	}
+
+	return func(c *gin.Context) {
+		origin := c.GetHeader("Origin")
+		if allowedOrigins[origin] {
+			c.Header("Access-Control-Allow-Origin", origin)
+			c.Header("Vary", "Origin")
+			c.Header("Access-Control-Allow-Methods", "GET, POST, PUT, PATCH, DELETE, OPTIONS")
+			c.Header("Access-Control-Allow-Headers", "Authorization, Content-Type")
+			c.Header("Access-Control-Max-Age", "86400")
+		}
+
+		if c.Request.Method == http.MethodOptions {
+			c.AbortWithStatus(http.StatusNoContent)
+			return
+		}
+
+		c.Next()
+	}
+}