feat: Add local data management modules (WIP)

- cached_sheet.rs: Cached sheet data management
- local_sheet.rs: Local sheet mapping structure
- member_held.rs: Member file holding status tracking
- NOTE: These modules are still under development

1 files changed, 25 insertions, 0 deletions

diff --git a/crates/vcs_data/src/data/local/member_held.rs b/crates/vcs_data/src/data/local/member_held.rs
new file mode 100644
index 0000000..e9e384d
--- /dev/null
+++ b/crates/vcs_data/src/data/local/member_held.rs
@@ -0,0 +1,25 @@
+use std::collections::HashMap;
+
+use cfg_file::ConfigFile;
+use serde::{Deserialize, Serialize};
+
+use crate::{
+    constants::CLIENT_FILE_MEMBER_HELD_NOSET,
+    data::{member::MemberId, vault::virtual_file::VirtualFileId},
+};
+
+#[derive(Debug, Default, Clone, Serialize, Deserialize, ConfigFile)]
+#[cfg_file(path = CLIENT_FILE_MEMBER_HELD_NOSET)]
+pub struct MemberHeld {
+    /// File holding status
+    held_status: HashMap<VirtualFileId, HeldStatus>,
+}
+
+#[derive(Debug, Default, Clone, Serialize, Deserialize)]
+pub enum HeldStatus {
+    HeldWith(MemberId), // Held, status changes are sync to the client
+    NotHeld,            // Not held, status changes are sync to the client
+
+    #[default]
+    WantedToKnow, // Holding status is unknown, notify server must inform client
+}