Refactor to use more Go 1.22 features

server/middlewares.go

@@ -1,6 +1,7 @@
 package server
 
 import (
+	"cmp"
 	"context"
 	"errors"
 	"fmt"
@@ -71,7 +72,7 @@ func robotsTXT(fs fs.FS) func(http.Handler) http.Handler {
 		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			if strings.HasSuffix(r.URL.Path, "/robots.txt") {
 				r.URL.Path = "/robots.txt"
-				http.FileServer(http.FS(fs)).ServeHTTP(w, r)
+				http.FileServerFS(fs).ServeHTTP(w, r)
 			} else {
 				next.ServeHTTP(w, r)
 			}
@@ -209,7 +210,7 @@ func serverAddressMiddleware(h http.Handler) http.Handler {
 		h.ServeHTTP(w, r)
 	}
 
-	// Return the new handler function as an http.Handler object.
+	// Return the new handler function as a http.Handler object.
 	return http.HandlerFunc(fn)
 }
 
@@ -244,15 +245,15 @@ func serverAddress(r *http.Request) (scheme, host string) {
 		}
 		xfh = xfh[:i]
 	}
-	host = FirstOr(r.Host, xfh)
+	host = cmp.Or(xfh, r.Host)
 
 	// Determine the protocol and scheme of the request based on the presence of
 	// X-Forwarded-* headers or the scheme of the request URL.
-	scheme = FirstOr(
+	scheme = cmp.Or(
-		protocol,
 		r.Header.Get(xForwardedProto),
 		r.Header.Get(xForwardedScheme),
 		r.URL.Scheme,
+		protocol,
 	)
 
 	// If the request host has changed due to the X-Forwarded-Host header, log a trace

utils/gg/gg.go

@@ -13,24 +13,6 @@ func If[T comparable](v T, orElse T) T {
 	return orElse
 }
 
-// FirstOr is a generic helper function that returns the first non-zero value from
-// a list of comparable values, or a default value if all the values are zero.
-func FirstOr[T comparable](or T, values ...T) T {
-	// Initialize a zero value of the same type as the input values.
-	var zero T
-
-	// Loop through each input value and check if it is non-zero. If a non-zero value
-	// is found, return it immediately.
-	for _, v := range values {
-		if v != zero {
-			return v
-		}
-	}
-
-	// If all the input values are zero, return the default value.
-	return or
-}
-
 // P returns a pointer to the input value
 func P[T any](v T) *T {
 	return &v

utils/gg/gg_test.go

@@ -43,20 +43,6 @@ var _ = Describe("GG", func() {
 		)
 	})
 
-	Describe("FirstOr", func() {
-		Context("when given a list of strings", func() {
-			It("returns the first non-empty value", func() {
-				Expect(gg.FirstOr("default", "foo", "bar", "baz")).To(Equal("foo"))
-				Expect(gg.FirstOr("default", "", "", "qux")).To(Equal("qux"))
-			})
-
-			It("returns the default value if all values are empty", func() {
-				Expect(gg.FirstOr("default", "", "", "")).To(Equal("default"))
-				Expect(gg.FirstOr("", "", "", "")).To(Equal(""))
-			})
-		})
-	})
-
 	Describe("P", func() {
 		It("returns a pointer to the input value", func() {
 			v := 123