1 files changed, 61 insertions, 11 deletions

diff --git a/systems/sheet/src/index_source.rs b/systems/sheet/src/index_source.rs
index b22f5a6..e322670 100644
--- a/systems/sheet/src/index_source.rs
+++ b/systems/sheet/src/index_source.rs
@@ -4,6 +4,8 @@ use serde::{Deserialize, Serialize};
 /// Points to a unique resource address in Vault
 #[derive(Debug, Clone, Copy, Serialize, Deserialize)]
 pub struct IndexSource {
+    remote: bool,
+
     /// The index ID of the resource
     id: u32,
 
@@ -15,8 +17,31 @@ pub struct IndexSource {
 
 impl IndexSource {
     /// Create IndexSource
-    pub fn new(id: u32, ver: u16) -> Self {
-        IndexSource { id, ver }
+    pub fn new(remote: bool, id: u32, ver: u16) -> Self {
+        IndexSource { remote, id, ver }
+    }
+
+    /// Create IndexSource To Local Namespace
+    pub fn new_local(id: u32, ver: u16) -> Self {
+        IndexSource {
+            remote: false,
+            id,
+            ver,
+        }
+    }
+
+    /// Create IndexSource To Remote Namespace
+    pub fn new_remote(id: u32, ver: u16) -> Self {
+        IndexSource {
+            remote: true,
+            id,
+            ver,
+        }
+    }
+
+    /// Check if the IndexSource points to a remote namespace
+    pub fn is_remote(&self) -> bool {
+        self.remote
     }
 
     /// Get index ID from IndexSource
@@ -34,7 +59,7 @@ impl IndexSource {
 
 impl PartialEq for IndexSource {
     fn eq(&self, other: &Self) -> bool {
-        &self.id == &other.id && &self.ver == &other.ver
+        &self.remote == &other.remote && &self.id == &other.id && &self.ver == &other.ver
     }
 }
 
@@ -44,6 +69,7 @@ impl Eq for IndexSource {}
 
 impl std::hash::Hash for IndexSource {
     fn hash<H: std::hash::Hasher>(&self, state: &mut H) {
+        self.remote.hash(state);
         self.id.hash(state);
         self.ver.hash(state);
     }
@@ -55,9 +81,13 @@ impl<'a> TryFrom<&'a str> for IndexSource {
     type Error = &'static str;
 
     fn try_from(value: &'a str) -> Result<Self, Self::Error> {
-        let parts: Vec<&str> = value.split('/').collect();
+        let trimmed = value.trim();
+        let remote = !trimmed.starts_with('~');
+        let value_without_tilde = if remote { trimmed } else { &trimmed[1..] };
+
+        let parts: Vec<&str> = value_without_tilde.split('/').collect();
         if parts.len() != 2 {
-            return Err("Invalid format: expected 'id/version'");
+            return Err("Invalid format: expected '[~]id/version'");
         }
 
         let id_str = parts[0].trim();
@@ -74,9 +104,7 @@ impl<'a> TryFrom<&'a str> for IndexSource {
             .parse::<u16>()
             .map_err(|_| "Version must be a valid u16")?;
 
-        // Check for overflow (though parsing already validates range)
-        // Additional bounds checks can be added here if needed
-        Ok(Self { id, ver })
+        Ok(Self { remote, id, ver })
     }
 }
 
@@ -88,9 +116,9 @@ impl TryFrom<String> for IndexSource {
     }
 }
 
-impl From<IndexSource> for (u32, u16) {
+impl From<IndexSource> for (bool, u32, u16) {
     fn from(src: IndexSource) -> Self {
-        (src.id, src.ver)
+        (src.remote, src.id, src.ver)
     }
 }
 
@@ -105,12 +133,34 @@ impl IndexSource {
     pub fn set_version(&mut self, version: u16) {
         self.ver = version;
     }
+
+    /// Set the remote flag of IndexSource
+    pub fn set_is_remote(&mut self, remote: bool) {
+        self.remote = remote;
+    }
+
+    /// Convert IndexSource to local namespace
+    pub fn to_local(&mut self) {
+        self.remote = false;
+    }
+
+    /// Convert IndexSource to remote namespace
+    pub fn to_remote(&mut self) {
+        self.remote = true;
+    }
 }
 
 // Implement Display for IndexSourceBuf and IndexSource
 
 impl std::fmt::Display for IndexSource {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}/{}", self.id.to_string(), self.ver.to_string())
+        let local_symbol = if self.remote { "" } else { "~" };
+        write!(
+            f,
+            "{}{}/{}",
+            local_symbol,
+            self.id.to_string(),
+            self.ver.to_string()
+        )
     }
 }