Initial commit

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

app/api/web/route_url.go

@@ -0,0 +1,43 @@
+package web
+
+import (
+	"net/http"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+)
+
+func routeOrQuery(c *gin.Context, routeName, queryName string) string {
+	if c == nil {
+		return ""
+	}
+	if value := strings.TrimSpace(c.Param(routeName)); value != "" {
+		return value
+	}
+	return strings.TrimSpace(c.Query(queryName))
+}
+
+func hasQuery(c *gin.Context, names ...string) bool {
+	if c == nil || c.Request == nil || c.Request.URL == nil {
+		return false
+	}
+	values := c.Request.URL.Query()
+	for _, name := range names {
+		if _, ok := values[name]; ok {
+			return true
+		}
+	}
+	return false
+}
+
+func redirectCanonical(c *gin.Context, target string) bool {
+	target = strings.TrimSpace(target)
+	if c == nil || target == "" || c.Request == nil || c.Request.URL == nil {
+		return false
+	}
+	if c.Request.URL.RequestURI() == target {
+		return false
+	}
+	c.Redirect(http.StatusMovedPermanently, target)
+	return true
+}