refact: move gzip to seperate file

server/gzip_handler.go

@@ -0,0 +1,30 @@
+package server
+
+import (
+	"compress/gzip"
+	"io"
+	"net/http"
+	"strings"
+)
+
+type gzipResponseWriter struct {
+	io.Writer
+	http.ResponseWriter
+}
+
+func (w gzipResponseWriter) Write(b []byte) (int, error) {
+	return w.Writer.Write(b)
+}
+func gzipHandler(fn http.HandlerFunc) http.HandlerFunc {
+	return func(w http.ResponseWriter, r *http.Request) {
+		if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
+			fn(w, r)
+			return
+		}
+		w.Header().Set("Content-Encoding", "gzip")
+		gz := gzip.NewWriter(w)
+		defer gz.Close()
+		gzr := gzipResponseWriter{Writer: gz, ResponseWriter: w}
+		fn(gzr, r)
+	}
+}

server/server.go

@@ -1,14 +1,11 @@
 package server
 
 import (
-	"compress/gzip"
 	"fmt"
-	"io"
 	"net/http"
 	"net/http/httputil"
 	"os"
 	"path/filepath"
-	"strings"
 	"time"
 
 	"github.com/taybart/log"
@@ -18,28 +15,6 @@ const (
 	httpTimeout = 15 * time.Second
 )
 
-type gzipResponseWriter struct {
-	io.Writer
-	http.ResponseWriter
-}
-
-func (w gzipResponseWriter) Write(b []byte) (int, error) {
-	return w.Writer.Write(b)
-}
-func gzipHandler(fn http.HandlerFunc) http.HandlerFunc {
-	return func(w http.ResponseWriter, r *http.Request) {
-		if !strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
-			fn(w, r)
-			return
-		}
-		w.Header().Set("Content-Encoding", "gzip")
-		gz := gzip.NewWriter(w)
-		defer gz.Close()
-		gzr := gzipResponseWriter{Writer: gz, ResponseWriter: w}
-		fn(gzr, r)
-	}
-}
-
 type Server struct {
 	router *http.ServeMux
 	c      Config