Add new protocol crate with basic types and operations

1 files changed, 71 insertions, 0 deletions

diff --git a/protocol/src/context.rs b/protocol/src/context.rs
new file mode 100644
index 0000000..4fdddb9
--- /dev/null
+++ b/protocol/src/context.rs
@@ -0,0 +1,71 @@
+use framework::space::{Space, SpaceRoot};
+
+pub struct ProtocolContext<User, Server>
+where
+    User: SpaceRoot,
+    Server: SpaceRoot,
+{
+    /// Current context's Vault
+    pub remote: Option<Space<Server>>,
+
+    /// Current context's Workspace
+    pub user: Option<Space<User>>,
+}
+
+impl<User, Server> ProtocolContext<User, Server>
+where
+    User: SpaceRoot,
+    Server: SpaceRoot,
+{
+    /// Create a new local context with a user
+    pub fn new_local(user: Space<User>) -> Self {
+        Self {
+            remote: None,
+            user: Some(user),
+        }
+    }
+
+    /// Create a new remote context with a server
+    pub fn new_remote(server: Space<Server>) -> Self {
+        Self {
+            remote: Some(server),
+            user: None,
+        }
+    }
+}
+
+impl<User, Server> ProtocolContext<User, Server>
+where
+    User: SpaceRoot,
+    Server: SpaceRoot,
+{
+    /// Check if the context is remote (has a server)
+    pub fn is_remote(&self) -> bool {
+        self.remote.is_some()
+    }
+
+    /// Check if the context is local (has a user)
+    pub fn is_local(&self) -> bool {
+        self.user.is_some()
+    }
+
+    /// Get the remote vault if it exists
+    pub fn remote(&self) -> Option<&Space<Server>> {
+        self.remote.as_ref()
+    }
+
+    /// Get the local workspace if it exists
+    pub fn local(&self) -> Option<&Space<User>> {
+        self.user.as_ref()
+    }
+
+    /// Unwrap the local workspace, panics if not local
+    pub fn unwrap_local(&self) -> &Space<User> {
+        self.user.as_ref().expect("Not a local context")
+    }
+
+    /// Unwrap the remote vault, panics if not remote
+    pub fn unwrap_remote(&self) -> &Space<Server> {
+        self.remote.as_ref().expect("Not a remote context")
+    }
+}