Organize backend into product executable and shared Go modules

backend/product/auth/http/public/logout.go

@@ -0,0 +1,55 @@
+package public
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"git.sendico.io/tech/sxchnge/product/auth/request"
+	"git.sendico.io/tech/sxchnge/product/sessions/browser"
+	"git.sendico.io/tech/sxchnge/product/sessions/metrics"
+	"git.sendico.io/tech/sxchnge/shared/http/response"
+	"git.sendico.io/tech/sxchnge/shared/service"
+	"go.uber.org/zap"
+)
+
+func (pr *PublicRouter) logout(r *http.Request) http.HandlerFunc {
+	respond := func(handler http.HandlerFunc, clearCookie bool) http.HandlerFunc {
+		if !clearCookie || !browser.UsesCookie(r) {
+			return handler
+		}
+		return func(w http.ResponseWriter, request *http.Request) {
+			browser.ClearRefreshCookie(w, request)
+			handler.ServeHTTP(w, request)
+		}
+	}
+	var req srequest.AccessTokenRefresh
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		pr.logger.Info("Rejected malformed logout request", zap.Error(err))
+		return respond(response.BadPayload(pr.logger, mservice.RefreshTokens, err), false)
+	}
+	credential, err := browser.RefreshCredential(r, req.RefreshToken)
+	if err != nil {
+		sessionmetrics.Observe(sessionmetrics.CurrentLogout, sessionmetrics.AlreadyInactive)
+		return respond(response.Success(pr.logger), true)
+	}
+	req.RefreshToken = credential
+	if req.ClientID == "" || req.DeviceID == "" || req.RefreshToken == "" {
+		sessionmetrics.Observe(sessionmetrics.CurrentLogout, sessionmetrics.MissingIdentity)
+		return respond(response.BadRequest(pr.logger, pr.service, "missing_session", "refresh token and session identifier are required"), false)
+	}
+
+	revoked, err := pr.rtdb.RevokeToken(r.Context(), &req)
+	if err != nil {
+		sessionmetrics.Observe(sessionmetrics.CurrentLogout, sessionmetrics.StorageError)
+		pr.logger.Warn("Failed to revoke current session", zap.Error(err),
+			zap.String("client_id", req.ClientID), zap.String("device_id", req.DeviceID))
+		return respond(response.Internal(pr.logger, pr.service, err), false)
+	}
+	if !revoked {
+		sessionmetrics.Observe(sessionmetrics.CurrentLogout, sessionmetrics.AlreadyInactive)
+		return respond(response.Success(pr.logger), true)
+	}
+	sessionmetrics.Observe(sessionmetrics.CurrentLogout, sessionmetrics.Succeeded)
+	pr.logger.Info("Current session revoked", zap.String("client_id", req.ClientID), zap.String("device_id", req.DeviceID))
+	return respond(response.Success(pr.logger), true)
+}