Refactor HTTP control server code

internal/server/handler.go

@@ -0,0 +1,70 @@
+package server
+
+import (
+	"fmt"
+	"net/http"
+
+	"github.com/qdm12/gluetun/internal/dns"
+	"github.com/qdm12/gluetun/internal/models"
+	"github.com/qdm12/gluetun/internal/openvpn"
+	"github.com/qdm12/gluetun/internal/updater"
+	"github.com/qdm12/golibs/logging"
+)
+
+func newHandler(logger logging.Logger, logging bool,
+	buildInfo models.BuildInformation,
+	openvpnLooper openvpn.Looper,
+	unboundLooper dns.Looper,
+	updaterLooper updater.Looper,
+) http.Handler {
+	return &handler{
+		logger:        logger,
+		logging:       logging,
+		buildInfo:     buildInfo,
+		openvpnLooper: openvpnLooper,
+		unboundLooper: unboundLooper,
+		updaterLooper: updaterLooper,
+	}
+}
+
+type handler struct {
+	logger        logging.Logger
+	logging       bool
+	buildInfo     models.BuildInformation
+	openvpnLooper openvpn.Looper
+	unboundLooper dns.Looper
+	updaterLooper updater.Looper
+}
+
+func (h *handler) ServeHTTP(responseWriter http.ResponseWriter, request *http.Request) {
+	if h.logging {
+		h.logger.Info("HTTP %s %s", request.Method, request.RequestURI)
+	}
+	switch request.Method {
+	case http.MethodGet:
+		switch request.RequestURI {
+		case "/version":
+			h.getVersion(responseWriter)
+			responseWriter.WriteHeader(http.StatusOK)
+		case "/openvpn/actions/restart":
+			h.openvpnLooper.Restart()
+			responseWriter.WriteHeader(http.StatusOK)
+		case "/unbound/actions/restart":
+			h.unboundLooper.Restart()
+			responseWriter.WriteHeader(http.StatusOK)
+		case "/openvpn/portforwarded":
+			h.getPortForwarded(responseWriter)
+		case "/openvpn/settings":
+			h.getOpenvpnSettings(responseWriter)
+		case "/updater/restart":
+			h.updaterLooper.Restart()
+			responseWriter.WriteHeader(http.StatusOK)
+		default:
+			errString := fmt.Sprintf("Nothing here for %s %s", request.Method, request.RequestURI)
+			http.Error(responseWriter, errString, http.StatusBadRequest)
+		}
+	default:
+		errString := fmt.Sprintf("Nothing here for %s %s", request.Method, request.RequestURI)
+		http.Error(responseWriter, errString, http.StatusBadRequest)
+	}
+}