1 files changed, 49 insertions, 0 deletions
diff --git a/middleware/context_keys.go b/middleware/context_keys.go
new file mode 100644
index 0000000..cc6bd2d
--- /dev/null
+++ b/middleware/context_keys.go
@@ -0,0 +1,49 @@
+// Copyright 2018 Frédéric Guillot. All rights reserved.
+// Use of this source code is governed by the Apache 2.0
+// license that can be found in the LICENSE file.
+
+package middleware
+
+// ContextKey represents a context key.
+type ContextKey struct {
+	name string
+}
+
+func (c ContextKey) String() string {
+	return c.name
+}
+
+var (
+	// UserIDContextKey is the context key used to store the user ID.
+	UserIDContextKey = &ContextKey{"UserID"}
+
+	// UserTimezoneContextKey is the context key used to store the user timezone.
+	UserTimezoneContextKey = &ContextKey{"UserTimezone"}
+
+	// IsAdminUserContextKey is the context key used to store the user role.
+	IsAdminUserContextKey = &ContextKey{"IsAdminUser"}
+
+	// IsAuthenticatedContextKey is the context key used to store the authentication flag.
+	IsAuthenticatedContextKey = &ContextKey{"IsAuthenticated"}
+
+	// UserSessionTokenContextKey is the context key used to store the user session ID.
+	UserSessionTokenContextKey = &ContextKey{"UserSessionToken"}
+
+	// UserLanguageContextKey is the context key to store user language.
+	UserLanguageContextKey = &ContextKey{"UserLanguageContextKey"}
+
+	// SessionIDContextKey is the context key used to store the session ID.
+	SessionIDContextKey = &ContextKey{"SessionID"}
+
+	// CSRFContextKey is the context key used to store CSRF token.
+	CSRFContextKey = &ContextKey{"CSRF"}
+
+	// OAuth2StateContextKey is the context key used to store OAuth2 state.
+	OAuth2StateContextKey = &ContextKey{"OAuth2State"}
+
+	// FlashMessageContextKey is the context key used to store a flash message.
+	FlashMessageContextKey = &ContextKey{"FlashMessage"}
+
+	// FlashErrorMessageContextKey is the context key used to store a flash error message.
+	FlashErrorMessageContextKey = &ContextKey{"FlashErrorMessage"}
+)