feat: Add file status tracking and SHA1 hash system

- Implement SHA1 hash calculation module with async support
- Add file status analysis for tracking moves, creates, and modifications
- Enhance local file management with relative path handling
- Update virtual file actions with improved tracking capabilities

1 files changed, 39 insertions, 2 deletions

diff --git a/crates/vcs_data/src/data/local/member_held.rs b/crates/vcs_data/src/data/local/member_held.rs
index 37bc18e..3f07232 100644
--- a/crates/vcs_data/src/data/local/member_held.rs
+++ b/crates/vcs_data/src/data/local/member_held.rs
@@ -1,13 +1,16 @@
-use std::collections::HashMap;
+use std::{collections::HashMap, io::Error, path::PathBuf};
 
 use cfg_file::ConfigFile;
 use serde::{Deserialize, Serialize};
 
 use crate::{
-    constants::CLIENT_FILE_MEMBER_HELD_NOSET,
+    constants::{CLIENT_FILE_MEMBER_HELD, CLIENT_FILE_MEMBER_HELD_NOSET},
+    current::current_local_path,
     data::{member::MemberId, vault::virtual_file::VirtualFileId},
 };
 
+const ACCOUNT: &str = "{account}";
+
 /// # Member Held Information
 /// Records the files held by the member, used for permission validation
 #[derive(Debug, Default, Clone, Serialize, Deserialize, ConfigFile)]
@@ -25,3 +28,37 @@ pub enum HeldStatus {
     #[default]
     WantedToKnow, // Holding status is unknown, notify server must inform client
 }
+
+impl MemberHeld {
+    /// Get the path to the file holding the held status information for the given member.
+    pub fn held_file_path(account: &MemberId) -> Result<PathBuf, std::io::Error> {
+        let Some(local_path) = current_local_path() else {
+            return Err(Error::new(
+                std::io::ErrorKind::NotFound,
+                "Workspace not found.",
+            ));
+        };
+        Ok(local_path.join(CLIENT_FILE_MEMBER_HELD.replace(ACCOUNT, account)))
+    }
+
+    /// Get the member who holds the file with the given ID.
+    pub fn file_holder(&self, vfid: &VirtualFileId) -> Option<&MemberId> {
+        self.held_status.get(vfid).and_then(|status| match status {
+            HeldStatus::HeldWith(id) => Some(id),
+            _ => None,
+        })
+    }
+
+    /// Update the held status of the files.
+    pub fn update_held_status(&mut self, map: HashMap<VirtualFileId, Option<MemberId>>) {
+        for (vfid, member_id) in map {
+            self.held_status.insert(
+                vfid,
+                match member_id {
+                    Some(member_id) => HeldStatus::HeldWith(member_id),
+                    None => HeldStatus::NotHeld,
+                },
+            );
+        }
+    }
+}