chore: initial import 萌邮 MengPost (React+Vite + Go+Gin)

Made-with: Cursor

mengpost-backend/handlers/auth.go

@@ -0,0 +1,27 @@
+package handlers
+
+import (
+	"net/http"
+
+	"github.com/gin-gonic/gin"
+
+	"mengpost-backend/config"
+)
+
+// VerifyToken 供前端 token 弹窗使用: 仅返回 token 是否正确.
+func VerifyToken(cfg *config.Config) gin.HandlerFunc {
+	return func(c *gin.Context) {
+		var body struct {
+			Token string `json:"token"`
+		}
+		if err := c.ShouldBindJSON(&body); err != nil {
+			c.JSON(http.StatusBadRequest, gin.H{"error": "invalid body"})
+			return
+		}
+		if body.Token != cfg.Token {
+			c.JSON(http.StatusUnauthorized, gin.H{"ok": false})
+			return
+		}
+		c.JSON(http.StatusOK, gin.H{"ok": true})
+	}
+}