Rename `env` to `vcs`

17 files changed, 0 insertions, 1367 deletions

diff --git a/crates/env/Cargo.toml b/crates/env/Cargo.toml
deleted file mode 100644
index 19ecb65..0000000
--- a/crates/env/Cargo.toml
+++ /dev/null
@@ -1,21 +0,0 @@
-[package]
-name = "env"
-edition = "2024"
-version.workspace = true
-
-[dependencies]
-tcp_connection = { path = "../utils/tcp_connection" }
-cfg_file = { path = "../utils/cfg_file", features = ["default"] }
-string_proc = { path = "../utils/string_proc" }
-
-# Identity
-uuid = { version = "1.18.1", features = ["v4", "serde"] }
-
-# Serialization
-serde = { version = "1.0.219", features = ["derive"] }
-
-# Async & Networking
-tokio = { version = "1.46.1", features = ["full"] }
-
-# Filesystem
-dirs = "6.0.0"
diff --git a/crates/env/env_test/Cargo.toml b/crates/env/env_test/Cargo.toml
deleted file mode 100644
index e4a2d14..0000000
--- a/crates/env/env_test/Cargo.toml
+++ /dev/null
@@ -1,12 +0,0 @@
-[package]
-name = "env_test"
-edition = "2024"
-version.workspace = true
-
-[dependencies]
-tcp_connection = { path = "../../utils/tcp_connection" }
-cfg_file = { path = "../../utils/cfg_file", features = ["default"] }
-env = { path = "../../env" }
-
-# Async & Networking
-tokio = { version = "1.46.1", features = ["full"] }
diff --git a/crates/env/env_test/src/lib.rs b/crates/env/env_test/src/lib.rs
deleted file mode 100644
index 357ea3f..0000000
--- a/crates/env/env_test/src/lib.rs
+++ /dev/null
@@ -1,21 +0,0 @@
-use std::{env::current_dir, path::PathBuf};
-
-use tokio::fs;
-
-#[cfg(test)]
-pub mod test_vault_setup_and_member_register;
-
-#[cfg(test)]
-pub mod test_virtual_file_creation_and_update;
-
-pub async fn get_test_dir(area: &str) -> Result<PathBuf, std::io::Error> {
-    let dir = current_dir()?.join(".temp").join("test").join(area);
-    if !dir.exists() {
-        std::fs::create_dir_all(&dir)?;
-    } else {
-        // Regenerate existing directory
-        fs::remove_dir_all(&dir).await?;
-        fs::create_dir_all(&dir).await?;
-    }
-    Ok(dir)
-}
diff --git a/crates/env/env_test/src/test_vault_setup_and_member_register.rs b/crates/env/env_test/src/test_vault_setup_and_member_register.rs
deleted file mode 100644
index e84a411..0000000
--- a/crates/env/env_test/src/test_vault_setup_and_member_register.rs
+++ /dev/null
@@ -1,69 +0,0 @@
-use std::io::Error;
-
-use cfg_file::config::ConfigFile;
-use env::{
-    constants::{
-        SERVER_FILE_MEMBER_INFO, SERVER_FILE_README, SERVER_FILE_VAULT, SERVER_PATH_MEMBER_PUB,
-        SERVER_PATH_MEMBERS, SERVER_PATH_SHEETS, SERVER_PATH_VIRTUAL_FILE_ROOT,
-    },
-    workspace::{
-        member::Member,
-        vault::{Vault, config::VaultConfig},
-    },
-};
-
-use crate::get_test_dir;
-
-#[tokio::test]
-async fn test_vault_setup_and_member_register() -> Result<(), std::io::Error> {
-    let dir = get_test_dir("member_register").await?;
-
-    // Setup vault
-    Vault::setup_vault(dir.clone()).await?;
-
-    // Check if the following files and directories are created in `dir`:
-    // Files: SERVER_FILE_VAULT, SERVER_FILE_README
-    // Directories: SERVER_PATH_SHEETS,
-    //              SERVER_PATH_MEMBERS,
-    //              SERVER_PATH_MEMBER_PUB,
-    //              SERVER_PATH_VIRTUAL_FILE_ROOT
-    assert!(dir.join(SERVER_FILE_VAULT).exists());
-    assert!(dir.join(SERVER_FILE_README).exists());
-    assert!(dir.join(SERVER_PATH_SHEETS).exists());
-    assert!(dir.join(SERVER_PATH_MEMBERS).exists());
-    assert!(dir.join(SERVER_PATH_MEMBER_PUB).exists());
-    assert!(dir.join(SERVER_PATH_VIRTUAL_FILE_ROOT).exists());
-
-    // Get vault
-    let config = VaultConfig::read_from(dir.join(SERVER_FILE_VAULT)).await?;
-    let Some(vault) = Vault::init(config, &dir) else {
-        return Err(Error::new(std::io::ErrorKind::NotFound, "Vault not found!"));
-    };
-
-    // Add member
-    let member_id = "test_member";
-    vault
-        .register_member_to_vault(Member::new(member_id))
-        .await?;
-
-    const ID_PARAM: &str = "{member_id}";
-
-    // Check if the member info file exists
-    assert_eq!(
-        dir.join(SERVER_FILE_MEMBER_INFO.replace(ID_PARAM, member_id))
-            .exists(),
-        true
-    );
-
-    // Remove member
-    vault.remove_member_from_vault(&member_id.to_string())?;
-
-    // Check if the member info file not exists
-    assert_eq!(
-        dir.join(SERVER_FILE_MEMBER_INFO.replace(ID_PARAM, member_id))
-            .exists(),
-        false
-    );
-
-    Ok(())
-}
diff --git a/crates/env/env_test/src/test_virtual_file_creation_and_update.rs b/crates/env/env_test/src/test_virtual_file_creation_and_update.rs
deleted file mode 100644
index 7da2bef..0000000
--- a/crates/env/env_test/src/test_virtual_file_creation_and_update.rs
+++ /dev/null
@@ -1,170 +0,0 @@
-use std::time::Duration;
-
-use cfg_file::config::ConfigFile;
-use env::{
-    constants::SERVER_FILE_VAULT,
-    workspace::{
-        member::Member,
-        vault::{Vault, config::VaultConfig, virtual_file::VirtualFileVersionDescription},
-    },
-};
-use tcp_connection::{
-    handle::{ClientHandle, ServerHandle},
-    target::TcpServerTarget,
-    target_configure::ServerTargetConfig,
-};
-use tokio::{
-    join,
-    time::{sleep, timeout},
-};
-
-use crate::get_test_dir;
-
-struct VirtualFileCreateClientHandle;
-struct VirtualFileCreateServerHandle;
-
-impl ClientHandle<VirtualFileCreateServerHandle> for VirtualFileCreateClientHandle {
-    fn process(
-        mut instance: tcp_connection::instance::ConnectionInstance,
-    ) -> impl Future<Output = ()> + Send {
-        async move {
-            let dir = get_test_dir("virtual_file_creation_and_update_2")
-                .await
-                .unwrap();
-            // Create first test file for virtual file creation
-            let test_content_1 = b"Test file content for virtual file creation";
-            let temp_file_path_1 = dir.join("test_virtual_file_1.txt");
-
-            tokio::fs::write(&temp_file_path_1, test_content_1)
-                .await
-                .unwrap();
-
-            // Send the first file to server for virtual file creation
-            instance.write_file(&temp_file_path_1).await.unwrap();
-
-            // Create second test file for virtual file update
-            let test_content_2 = b"Updated test file content for virtual file";
-            let temp_file_path_2 = dir.join("test_virtual_file_2.txt");
-
-            tokio::fs::write(&temp_file_path_2, test_content_2)
-                .await
-                .unwrap();
-
-            // Send the second file to server for virtual file update
-            instance.write_file(&temp_file_path_2).await.unwrap();
-        }
-    }
-}
-
-impl ServerHandle<VirtualFileCreateClientHandle> for VirtualFileCreateServerHandle {
-    fn process(
-        mut instance: tcp_connection::instance::ConnectionInstance,
-    ) -> impl Future<Output = ()> + Send {
-        async move {
-            let dir = get_test_dir("virtual_file_creation_and_update")
-                .await
-                .unwrap();
-
-            // Setup vault
-            Vault::setup_vault(dir.clone()).await.unwrap();
-
-            // Read vault
-            let Some(vault) = Vault::init(
-                VaultConfig::read_from(dir.join(SERVER_FILE_VAULT))
-                    .await
-                    .unwrap(),
-                &dir,
-            ) else {
-                panic!("No vault found!");
-            };
-
-            // Register member
-            let member_id = "test_member";
-            vault
-                .register_member_to_vault(Member::new(member_id))
-                .await
-                .unwrap();
-
-            // Create visual file
-            let virtual_file_id = vault
-                .create_virtual_file_from_connection(&mut instance, &member_id.to_string())
-                .await
-                .unwrap();
-
-            // Grant edit right to member
-            vault
-                .grant_virtual_file_edit_right(&member_id.to_string(), &virtual_file_id)
-                .await
-                .unwrap();
-
-            // Update visual file
-            vault
-                .update_virtual_file_from_connection(
-                    &mut instance,
-                    &member_id.to_string(),
-                    &virtual_file_id,
-                    &"2".to_string(),
-                    VirtualFileVersionDescription {
-                        creator: member_id.to_string(),
-                        description: "Update".to_string(),
-                    },
-                )
-                .await
-                .unwrap();
-        }
-    }
-}
-
-#[tokio::test]
-async fn test_virtual_file_creation_and_update() -> Result<(), std::io::Error> {
-    let host = "localhost:5009";
-
-    // Server setup
-    let Ok(server_target) = TcpServerTarget::<
-        VirtualFileCreateClientHandle,
-        VirtualFileCreateServerHandle,
-    >::from_domain(host)
-    .await
-    else {
-        panic!("Test target built failed from a domain named `{}`", host);
-    };
-
-    // Client setup
-    let Ok(client_target) = TcpServerTarget::<
-        VirtualFileCreateClientHandle,
-        VirtualFileCreateServerHandle,
-    >::from_domain(host)
-    .await
-    else {
-        panic!("Test target built failed from a domain named `{}`", host);
-    };
-
-    let future_server = async move {
-        // Only process once
-        let configured_server = server_target.server_cfg(ServerTargetConfig::default().once());
-
-        // Listen here
-        let _ = configured_server.listen().await;
-    };
-
-    let future_client = async move {
-        // Wait for server start
-        let _ = sleep(Duration::from_secs_f32(1.5)).await;
-
-        // Connect here
-        let _ = client_target.connect().await;
-    };
-
-    let test_timeout = Duration::from_secs(15);
-
-    timeout(test_timeout, async { join!(future_client, future_server) })
-        .await
-        .map_err(|_| {
-            std::io::Error::new(
-                std::io::ErrorKind::TimedOut,
-                format!("Test timed out after {:?}", test_timeout),
-            )
-        })?;
-
-    Ok(())
-}
diff --git a/crates/env/src/constants.rs b/crates/env/src/constants.rs
deleted file mode 100644
index eb7b019..0000000
--- a/crates/env/src/constants.rs
+++ /dev/null
@@ -1,50 +0,0 @@
-// -------------------------------------------------------------------------------------
-//
-
-// Project
-pub const PATH_TEMP: &str = "./.temp/";
-
-// Default Port
-pub const PORT: u16 = 25331;
-
-// Server
-// Server - Vault (Main)
-pub const SERVER_FILE_VAULT: &str = "./vault.toml"; // crates::env::vault::vault_config
-
-// Server - Sheets
-pub const SERVER_PATH_SHEETS: &str = "./sheets/";
-pub const SERVER_FILE_SHEET: &str = "./sheets/{sheet-name}.yaml";
-
-// Server - Members
-pub const SERVER_PATH_MEMBERS: &str = "./members/";
-pub const SERVER_PATH_MEMBER_PUB: &str = "./key/";
-pub const SERVER_FILE_MEMBER_INFO: &str = "./members/{member_id}.toml"; // crates::env::member::manager
-pub const SERVER_FILE_MEMBER_PUB: &str = "./key/{member_id}.pem"; // crates::utils::tcp_connection::instance
-
-// Server - Virtual File Storage
-pub const SERVER_PATH_VIRTUAL_FILE_TEMP: &str = "./.temp/{temp_name}";
-pub const SERVER_PATH_VIRTUAL_FILE_ROOT: &str = "./storage/";
-pub const SERVER_PATH_VIRTUAL_FILE_STORAGE: &str = "./storage/{vf_id}/";
-pub const SERVER_FILE_VIRTUAL_FILE_VERSION_INSTANCE: &str = "./storage/{vf_id}/{vf_version}.rf";
-pub const SERVER_FILE_VIRTUAL_FILE_META: &str = "./storage/{vf_id}/meta.yaml";
-
-pub const SERVER_FILE_README: &str = "./README.md";
-
-// -------------------------------------------------------------------------------------
-
-// Client
-pub const CLIENT_PATH_WORKSPACE_ROOT: &str = "./.jv/";
-
-// Client - Workspace (Main)
-pub const CLIENT_FILE_WORKSPACE: &str = "./.jv/workspace.toml"; // crates::env::local::local_config
-
-// Client - Other
-pub const CLIENT_FILE_IGNOREFILES: &str = ".jgnore .gitignore"; // Support gitignore file.
-pub const CLIENT_FILE_README: &str = "./README.md";
-
-// -------------------------------------------------------------------------------------
-
-// User - Verify (Documents path)
-pub const USER_FILE_ACCOUNTS: &str = "./accounts/";
-pub const USER_FILE_KEY_PUB: &str = "./accounts/{self_id}_private.pem";
-pub const USER_FILE_MEMBER: &str = "./accounts/{self_id}.toml";
diff --git a/crates/env/src/current.rs b/crates/env/src/current.rs
deleted file mode 100644
index 97b5058..0000000
--- a/crates/env/src/current.rs
+++ /dev/null
@@ -1,78 +0,0 @@
-use crate::constants::*;
-use std::io::{self, Error};
-use std::{env::set_current_dir, path::PathBuf};
-
-/// Find the nearest vault or local workspace and correct the `current_dir` to it
-pub fn correct_current_dir() -> Result<(), io::Error> {
-    if let Some(local_workspace) = current_local_path() {
-        set_current_dir(local_workspace)?;
-        return Ok(());
-    }
-    if let Some(vault) = current_vault_path() {
-        set_current_dir(vault)?;
-        return Ok(());
-    }
-    Err(Error::new(
-        io::ErrorKind::NotFound,
-        "Could not find any vault or local workspace!",
-    ))
-}
-
-/// Get the nearest Vault directory from `current_dir`
-pub fn current_vault_path() -> Option<PathBuf> {
-    let current_dir = std::env::current_dir().ok()?;
-    find_vault_path(current_dir)
-}
-
-/// Get the nearest local workspace from `current_dir`
-pub fn current_local_path() -> Option<PathBuf> {
-    let current_dir = std::env::current_dir().ok()?;
-    find_local_path(current_dir)
-}
-
-/// Get the nearest Vault directory from the specified path
-pub fn find_vault_path(path: impl Into<PathBuf>) -> Option<PathBuf> {
-    let mut current_path = path.into();
-    let vault_file = SERVER_FILE_VAULT;
-
-    loop {
-        let vault_toml_path = current_path.join(vault_file);
-        if vault_toml_path.exists() {
-            return Some(current_path);
-        }
-
-        if let Some(parent) = current_path.parent() {
-            current_path = parent.to_path_buf();
-        } else {
-            break;
-        }
-    }
-
-    None
-}
-
-/// Get the nearest local workspace from the specified path
-pub fn find_local_path(path: impl Into<PathBuf>) -> Option<PathBuf> {
-    let mut current_path = path.into();
-    let workspace_dir = CLIENT_PATH_WORKSPACE_ROOT;
-
-    loop {
-        let jvc_path = current_path.join(workspace_dir);
-        if jvc_path.exists() {
-            return Some(current_path);
-        }
-
-        if let Some(parent) = current_path.parent() {
-            current_path = parent.to_path_buf();
-        } else {
-            break;
-        }
-    }
-
-    None
-}
-
-/// Get the system's document directory and join with .just_enough_vcs
-pub fn current_doc_dir() -> Option<PathBuf> {
-    dirs::document_dir().map(|path| path.join(".just_enough_vcs"))
-}
diff --git a/crates/env/src/lib.rs b/crates/env/src/lib.rs
deleted file mode 100644
index 15a315f..0000000
--- a/crates/env/src/lib.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-pub mod constants;
-pub mod current;
-
-#[allow(dead_code)]
-pub mod workspace;
diff --git a/crates/env/src/workspace.rs b/crates/env/src/workspace.rs
deleted file mode 100644
index d59a6e0..0000000
--- a/crates/env/src/workspace.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-pub mod local;
-pub mod member;
-pub mod vault;
diff --git a/crates/env/src/workspace/local.rs b/crates/env/src/workspace/local.rs
deleted file mode 100644
index 829fc51..0000000
--- a/crates/env/src/workspace/local.rs
+++ /dev/null
@@ -1,107 +0,0 @@
-use std::{env::current_dir, path::PathBuf};
-
-use cfg_file::config::ConfigFile;
-use tokio::fs;
-
-use crate::{
-    constants::{CLIENT_FILE_README, CLIENT_FILE_WORKSPACE},
-    current::{current_local_path, find_local_path},
-    workspace::local::config::LocalConfig,
-};
-
-pub mod accounts;
-pub mod config;
-
-pub struct LocalWorkspace {
-    config: LocalConfig,
-    local_path: PathBuf,
-}
-
-impl LocalWorkspace {
-    /// Get the path of the local workspace.
-    pub fn local_path(&self) -> &PathBuf {
-        &self.local_path
-    }
-
-    /// Initialize local workspace.
-    pub fn init(config: LocalConfig, local_path: impl Into<PathBuf>) -> Option<Self> {
-        let Some(local_path) = find_local_path(local_path) else {
-            return None;
-        };
-        Some(Self { config, local_path })
-    }
-
-    /// Initialize local workspace in the current directory.
-    pub fn init_current_dir(config: LocalConfig) -> Option<Self> {
-        let Some(local_path) = current_local_path() else {
-            return None;
-        };
-        Some(Self { config, local_path })
-    }
-
-    /// Setup local workspace
-    pub async fn setup_local_workspace(
-        local_path: impl Into<PathBuf>,
-    ) -> Result<(), std::io::Error> {
-        let local_path: PathBuf = local_path.into();
-
-        // Ensure directory is empty
-        if local_path.exists() && local_path.read_dir()?.next().is_some() {
-            return Err(std::io::Error::new(
-                std::io::ErrorKind::DirectoryNotEmpty,
-                "DirectoryNotEmpty",
-            ));
-        }
-
-        // 1. Setup config
-        let config = LocalConfig::default();
-        LocalConfig::write_to(&config, local_path.join(CLIENT_FILE_WORKSPACE)).await?;
-
-        // 2. Setup README.md
-        let readme_content = format!(
-            "\
-# JustEnoughVCS Local Workspace
-
-This directory is a **Local Workspace** managed by `JustEnoughVCS`. All files and subdirectories within this scope can be version-controlled using the `JustEnoughVCS` CLI or GUI tools, with the following exceptions:
-
-- The `.jv` directory
-- Any files or directories excluded via `.jgnore` or `.gitignore`
-
-> ⚠️ **Warning**
->
-> Files in this workspace will be uploaded to the upstream server. Please ensure you fully trust this server before proceeding.
-
-## Access Requirements
-
-To use `JustEnoughVCS` with this workspace, you must have:
-
-- **A registered user ID** with the upstream server
-- **Your private key** properly configured locally
-- **Your public key** stored in the server's public key directory
-
-Without these credentials, the server will reject all access requests.
-
-## Support
-
-- **Permission or access issues?** → Contact your server administrator
-- **Tooling problems or bugs?** → Reach out to the development team via [GitHub Issues](https://github.com/JustEnoughVCS/VersionControl/issues)
-- **Documentation**: Visit our repository for full documentation
-
-------
-
-*Thank you for using JustEnoughVCS!*
-"
-        )
-        .trim()
-        .to_string();
-        fs::write(local_path.join(CLIENT_FILE_README), readme_content).await?;
-
-        Ok(())
-    }
-
-    /// Setup local workspace in current directory
-    pub async fn setup_local_workspacecurrent_dir() -> Result<(), std::io::Error> {
-        Self::setup_local_workspace(current_dir()?).await?;
-        Ok(())
-    }
-}
diff --git a/crates/env/src/workspace/local/accounts.rs b/crates/env/src/workspace/local/accounts.rs
deleted file mode 100644
index 8b13789..0000000
--- a/crates/env/src/workspace/local/accounts.rs
+++ /dev/null
@@ -1 +0,0 @@
-
diff --git a/crates/env/src/workspace/local/config.rs b/crates/env/src/workspace/local/config.rs
deleted file mode 100644
index d641880..0000000
--- a/crates/env/src/workspace/local/config.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-use cfg_file::ConfigFile;
-use serde::{Deserialize, Serialize};
-use std::net::SocketAddr;
-
-use crate::constants::CLIENT_FILE_WORKSPACE;
-use crate::constants::PORT;
-use crate::workspace::vault::MemberId;
-
-#[derive(Serialize, Deserialize, ConfigFile)]
-#[cfg_file(path = CLIENT_FILE_WORKSPACE)]
-pub struct LocalConfig {
-    /// The upstream address, representing the upstream address of the local workspace,
-    /// to facilitate timely retrieval of new updates from the upstream source.
-    upstream_addr: SocketAddr,
-
-    /// The member ID used by the current local workspace.
-    /// This ID will be used to verify access permissions when connecting to the upstream server.
-    using_account: MemberId,
-}
-
-impl Default for LocalConfig {
-    fn default() -> Self {
-        Self {
-            upstream_addr: SocketAddr::V4(std::net::SocketAddrV4::new(
-                std::net::Ipv4Addr::new(127, 0, 0, 1),
-                PORT,
-            )),
-            using_account: "unknown".to_string(),
-        }
-    }
-}
-
-impl LocalConfig {
-    /// Set the vault address.
-    pub fn set_vault_addr(&mut self, addr: SocketAddr) {
-        self.upstream_addr = addr;
-    }
-
-    /// Get the vault address.
-    pub fn vault_addr(&self) -> SocketAddr {
-        self.upstream_addr
-    }
-
-    /// Set the currently used account
-    pub fn set_current_account(&mut self, account: MemberId) {
-        self.using_account = account;
-    }
-
-    /// Get the currently used account
-    pub fn current_account(&self) -> MemberId {
-        self.using_account.clone()
-    }
-}
diff --git a/crates/env/src/workspace/member.rs b/crates/env/src/workspace/member.rs
deleted file mode 100644
index 208c78c..0000000
--- a/crates/env/src/workspace/member.rs
+++ /dev/null
@@ -1,67 +0,0 @@
-use std::collections::HashMap;
-
-use cfg_file::ConfigFile;
-use serde::{Deserialize, Serialize};
-use string_proc::snake_case;
-
-#[derive(Debug, Eq, Clone, ConfigFile, Serialize, Deserialize)]
-pub struct Member {
-    /// Member ID, the unique identifier of the member
-    id: String,
-
-    /// Member metadata
-    metadata: HashMap<String, String>,
-}
-
-impl Default for Member {
-    fn default() -> Self {
-        Self::new("default_user")
-    }
-}
-
-impl PartialEq for Member {
-    fn eq(&self, other: &Self) -> bool {
-        self.id == other.id
-    }
-}
-
-impl std::fmt::Display for Member {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}", self.id)
-    }
-}
-
-impl std::convert::AsRef<str> for Member {
-    fn as_ref(&self) -> &str {
-        &self.id
-    }
-}
-
-impl Member {
-    /// Create member struct by id
-    pub fn new(new_id: impl Into<String>) -> Self {
-        Self {
-            id: snake_case!(new_id.into()),
-            metadata: HashMap::new(),
-        }
-    }
-
-    /// Get member id
-    pub fn id(&self) -> String {
-        self.id.clone()
-    }
-
-    /// Get metadata
-    pub fn metadata(&self, key: impl Into<String>) -> Option<&String> {
-        self.metadata.get(&key.into())
-    }
-
-    /// Set metadata
-    pub fn set_metadata(
-        &mut self,
-        key: impl AsRef<str>,
-        value: impl Into<String>,
-    ) -> Option<String> {
-        self.metadata.insert(key.as_ref().to_string(), value.into())
-    }
-}
diff --git a/crates/env/src/workspace/vault.rs b/crates/env/src/workspace/vault.rs
deleted file mode 100644
index caac662..0000000
--- a/crates/env/src/workspace/vault.rs
+++ /dev/null
@@ -1,137 +0,0 @@
-use std::{
-    env::current_dir,
-    fs::{self, create_dir_all},
-    path::PathBuf,
-};
-
-use cfg_file::config::ConfigFile;
-
-use crate::{
-    constants::{
-        SERVER_FILE_README, SERVER_FILE_VAULT, SERVER_PATH_MEMBER_PUB, SERVER_PATH_MEMBERS,
-        SERVER_PATH_SHEETS, SERVER_PATH_VIRTUAL_FILE_ROOT,
-    },
-    current::{current_vault_path, find_vault_path},
-    workspace::vault::config::VaultConfig,
-};
-
-pub mod config;
-pub mod member;
-pub mod virtual_file;
-
-pub type MemberId = String;
-
-pub struct Vault {
-    config: VaultConfig,
-    vault_path: PathBuf,
-}
-
-impl Vault {
-    /// Get vault path
-    pub fn vault_path(&self) -> &PathBuf {
-        &self.vault_path
-    }
-
-    /// Initialize vault
-    pub fn init(config: VaultConfig, vault_path: impl Into<PathBuf>) -> Option<Self> {
-        let Some(vault_path) = find_vault_path(vault_path) else {
-            return None;
-        };
-        Some(Self { config, vault_path })
-    }
-
-    /// Initialize vault
-    pub fn init_current_dir(config: VaultConfig) -> Option<Self> {
-        let Some(vault_path) = current_vault_path() else {
-            return None;
-        };
-        Some(Self { config, vault_path })
-    }
-
-    /// Setup vault
-    pub async fn setup_vault(vault_path: impl Into<PathBuf>) -> Result<(), std::io::Error> {
-        let vault_path: PathBuf = vault_path.into();
-
-        // Ensure directory is empty
-        if vault_path.exists() && vault_path.read_dir()?.next().is_some() {
-            return Err(std::io::Error::new(
-                std::io::ErrorKind::DirectoryNotEmpty,
-                "DirectoryNotEmpty",
-            ));
-        }
-
-        // 1. Setup main config
-        let config = VaultConfig::default();
-        VaultConfig::write_to(&config, vault_path.join(SERVER_FILE_VAULT)).await?;
-
-        // 2. Setup sheets directory
-        create_dir_all(vault_path.join(SERVER_PATH_SHEETS))?;
-
-        // 3. Setup key directory
-        create_dir_all(vault_path.join(SERVER_PATH_MEMBER_PUB))?;
-
-        // 4. Setup member directory
-        create_dir_all(vault_path.join(SERVER_PATH_MEMBERS))?;
-
-        // 5. Setup storage directory
-        create_dir_all(vault_path.join(SERVER_PATH_VIRTUAL_FILE_ROOT))?;
-
-        // Final, generate README.md
-        let readme_content = format!(
-            "\
-# JustEnoughVCS Server Setup
-
-This directory contains the server configuration and data for `JustEnoughVCS`.
-
-## User Authentication
-To allow users to connect to this server, place their public keys in the `{}` directory.
-Each public key file should be named `{{member_id}}.pem` (e.g., `juliet.pem`), and contain the user's public key in PEM format.
-
-**ECDSA:**
-```bash
-openssl genpkey -algorithm ed25519 -out your_name_private.pem
-openssl pkey -in your_name_private.pem -pubout -out your_name.pem
-```
-
-**RSA:**
-```bash
-openssl genpkey -algorithm RSA -out your_name_private.pem -pkeyopt rsa_keygen_bits:2048
-openssl pkey -in your_name_private.pem -pubout -out your_name.pem
-```
-
-**DSA:**
-```bash
-openssl genpkey -algorithm DSA -out your_name_private.pem -pkeyopt dsa_paramgen_bits:2048
-openssl pkey -in your_name_private.pem -pubout -out your_name.pem
-```
-
-Place only the `your_name.pem` file in the server's `./key/` directory, renamed to match the user's member ID.
-
-## File Storage
-All version-controlled files (Virtual File) are stored in the `{}` directory.
-
-## License
-This software is distributed under the MIT License. For complete license details, please see the main repository homepage.
-
-## Support
-Repository: `https://github.com/JustEnoughVCS/VersionControl`
-Please report any issues or questions on the GitHub issue tracker.
-
-## Thanks :)
-Thank you for using `JustEnoughVCS!`
-        ",
-            SERVER_PATH_MEMBER_PUB, SERVER_PATH_VIRTUAL_FILE_ROOT
-        )
-        .trim()
-        .to_string();
-        fs::write(vault_path.join(SERVER_FILE_README), readme_content)?;
-
-        Ok(())
-    }
-
-    /// Setup vault in current directory
-    pub async fn setup_vault_current_dir() -> Result<(), std::io::Error> {
-        Self::setup_vault(current_dir()?).await?;
-        Ok(())
-    }
-}
diff --git a/crates/env/src/workspace/vault/config.rs b/crates/env/src/workspace/vault/config.rs
deleted file mode 100644
index 5414e4d..0000000
--- a/crates/env/src/workspace/vault/config.rs
+++ /dev/null
@@ -1,46 +0,0 @@
-use cfg_file::ConfigFile;
-use serde::{Deserialize, Serialize};
-
-use crate::constants::SERVER_FILE_VAULT;
-use crate::workspace::member::Member;
-use crate::workspace::vault::MemberId;
-
-#[derive(Serialize, Deserialize, ConfigFile)]
-#[cfg_file(path = SERVER_FILE_VAULT)]
-pub struct VaultConfig {
-    /// Vault name, which can be used as the project name and generally serves as a hint
-    vault_name: String,
-
-    /// Vault admin id, a list of member id representing administrator identities
-    vault_admin_list: Vec<MemberId>,
-}
-
-impl Default for VaultConfig {
-    fn default() -> Self {
-        Self {
-            vault_name: "JustEnoughVault".to_string(),
-            vault_admin_list: Vec::new(),
-        }
-    }
-}
-
-impl VaultConfig {
-    // Change name of the vault.
-    pub fn change_name(&mut self, name: impl Into<String>) {
-        self.vault_name = name.into()
-    }
-
-    // Add admin
-    pub fn add_admin(&mut self, member: &Member) {
-        let uuid = member.id();
-        if !self.vault_admin_list.contains(&uuid) {
-            self.vault_admin_list.push(uuid);
-        }
-    }
-
-    // Remove admin
-    pub fn remove_admin(&mut self, member: &Member) {
-        let id = member.id();
-        self.vault_admin_list.retain(|x| x != &id);
-    }
-}
diff --git a/crates/env/src/workspace/vault/member.rs b/crates/env/src/workspace/vault/member.rs
deleted file mode 100644
index 793ba2a..0000000
--- a/crates/env/src/workspace/vault/member.rs
+++ /dev/null
@@ -1,105 +0,0 @@
-use std::{
-    fs,
-    io::{Error, ErrorKind},
-    path::PathBuf,
-};
-
-use cfg_file::config::ConfigFile;
-
-use crate::{
-    constants::{SERVER_FILE_MEMBER_INFO, SERVER_FILE_MEMBER_PUB},
-    workspace::{
-        member::Member,
-        vault::{MemberId, Vault},
-    },
-};
-
-const ID_PARAM: &str = "{member_id}";
-
-/// Member Manage
-impl Vault {
-    /// Read member from configuration file
-    pub async fn member(&self, id: &MemberId) -> Result<Member, std::io::Error> {
-        if let Some(cfg_file) = self.member_cfg(id) {
-            let member = Member::read_from(cfg_file).await?;
-            return Ok(member);
-        }
-
-        Err(Error::new(ErrorKind::NotFound, "Member not found!"))
-    }
-
-    /// Update member info
-    pub async fn update_member(&self, member: Member) -> Result<(), std::io::Error> {
-        // Ensure member exist
-        if let Some(_) = self.member_cfg(&member.id()) {
-            let member_cfg_path = self.member_cfg_path(&member.id());
-            Member::write_to(&member, member_cfg_path).await?;
-            return Ok(());
-        }
-
-        Err(Error::new(ErrorKind::NotFound, "Member not found!"))
-    }
-
-    /// Register a member to vault
-    pub async fn register_member_to_vault(&self, member: Member) -> Result<(), std::io::Error> {
-        // Ensure member not exist
-        if let Some(_) = self.member_cfg(&member.id()) {
-            return Err(Error::new(
-                ErrorKind::DirectoryNotEmpty,
-                format!("Member `{}` already registered!", member.id()),
-            ));
-        }
-
-        // Wrtie config file to member dir
-        let member_cfg_path = self.member_cfg_path(&member.id());
-        Member::write_to(&member, member_cfg_path).await?;
-
-        Ok(())
-    }
-
-    /// Remove member from vault
-    pub fn remove_member_from_vault(&self, id: &MemberId) -> Result<(), std::io::Error> {
-        // Ensure member exist
-        if let Some(member_cfg_path) = self.member_cfg(id) {
-            fs::remove_file(member_cfg_path)?;
-        }
-
-        Ok(())
-    }
-
-    /// Try to get the member's configuration file to determine if the member exists
-    pub fn member_cfg(&self, id: &MemberId) -> Option<PathBuf> {
-        let cfg_file = self.member_cfg_path(id);
-        if cfg_file.exists() {
-            Some(cfg_file)
-        } else {
-            None
-        }
-    }
-
-    /// Try to get the member's public key file to determine if the member has login permission
-    pub fn member_key(&self, id: &MemberId) -> Option<PathBuf> {
-        let key_file = self.member_key_path(id);
-        if key_file.exists() {
-            Some(key_file)
-        } else {
-            None
-        }
-    }
-
-    /// Get the member's configuration file path, but do not check if the file exists
-    pub fn member_cfg_path(&self, id: &MemberId) -> PathBuf {
-        let path = self
-            .vault_path
-            .join(SERVER_FILE_MEMBER_INFO.replace(ID_PARAM, id.to_string().as_str()));
-        path
-    }
-
-    /// Get the member's public key file path, but do not check if the file exists
-    pub fn member_key_path(&self, id: &MemberId) -> PathBuf {
-        let path = self
-            .vault_path
-            .join(SERVER_FILE_MEMBER_PUB.replace(ID_PARAM, id.to_string().as_str()));
-        path
-    }
-}
diff --git a/crates/env/src/workspace/vault/virtual_file.rs b/crates/env/src/workspace/vault/virtual_file.rs
deleted file mode 100644
index 321f0e1..0000000
--- a/crates/env/src/workspace/vault/virtual_file.rs
+++ /dev/null
@@ -1,422 +0,0 @@
-use std::{
-    collections::HashMap,
-    io::{Error, ErrorKind},
-    path::PathBuf,
-};
-
-use cfg_file::{ConfigFile, config::ConfigFile};
-use serde::{Deserialize, Serialize};
-use string_proc::snake_case;
-use tcp_connection::instance::ConnectionInstance;
-use tokio::fs;
-use uuid::Uuid;
-
-use crate::{
-    constants::{
-        SERVER_FILE_VIRTUAL_FILE_META, SERVER_FILE_VIRTUAL_FILE_VERSION_INSTANCE,
-        SERVER_PATH_VIRTUAL_FILE_ROOT, SERVER_PATH_VIRTUAL_FILE_STORAGE,
-        SERVER_PATH_VIRTUAL_FILE_TEMP,
-    },
-    workspace::vault::{MemberId, Vault},
-};
-
-pub type VirtualFileId = String;
-pub type VirtualFileVersion = String;
-
-const ID_PARAM: &str = "{vf_id}";
-const VERSION_PARAM: &str = "{vf_version}";
-const TEMP_NAME: &str = "{temp_name}";
-
-pub struct VirtualFile<'a> {
-    /// Unique identifier for the virtual file
-    id: VirtualFileId,
-
-    /// Reference of Vault
-    current_vault: &'a Vault,
-}
-
-#[derive(Default, Clone, Serialize, Deserialize, ConfigFile)]
-pub struct VirtualFileMeta {
-    /// Current version of the virtual file
-    current_version: VirtualFileVersion,
-
-    /// The member who holds the edit right of the file
-    hold_member: MemberId,
-
-    /// Description of each version
-    version_description: HashMap<VirtualFileVersion, VirtualFileVersionDescription>,
-
-    /// Histories
-    histories: Vec<VirtualFileVersion>,
-}
-
-#[derive(Default, Clone, Serialize, Deserialize)]
-pub struct VirtualFileVersionDescription {
-    /// The member who created this version
-    pub creator: MemberId,
-
-    /// The description of this version
-    pub description: String,
-}
-
-impl VirtualFileVersionDescription {
-    /// Create a new version description
-    pub fn new(creator: MemberId, description: String) -> Self {
-        Self {
-            creator,
-            description,
-        }
-    }
-}
-
-impl Vault {
-    /// Generate a temporary path for receiving
-    pub fn virtual_file_temp_path(&self) -> PathBuf {
-        let random_receive_name = format!("{}", uuid::Uuid::new_v4());
-        self.vault_path
-            .join(SERVER_PATH_VIRTUAL_FILE_TEMP.replace(TEMP_NAME, &random_receive_name))
-    }
-
-    /// Get the directory where virtual files are stored
-    pub fn virtual_file_storage_dir(&self) -> PathBuf {
-        self.vault_path().join(SERVER_PATH_VIRTUAL_FILE_ROOT)
-    }
-
-    /// Get the directory where a specific virtual file is stored
-    pub fn virtual_file_dir(&self, id: VirtualFileId) -> PathBuf {
-        self.vault_path()
-            .join(SERVER_PATH_VIRTUAL_FILE_STORAGE.replace(ID_PARAM, &id.to_string()))
-    }
-
-    /// Get the directory where a specific virtual file's metadata is stored
-    pub fn virtual_file_real_path(
-        &self,
-        id: &VirtualFileId,
-        version: &VirtualFileVersion,
-    ) -> PathBuf {
-        self.vault_path().join(
-            SERVER_FILE_VIRTUAL_FILE_VERSION_INSTANCE
-                .replace(ID_PARAM, &id.to_string())
-                .replace(VERSION_PARAM, &version.to_string()),
-        )
-    }
-
-    /// Get the directory where a specific virtual file's metadata is stored
-    pub fn virtual_file_meta_path(&self, id: &VirtualFileId) -> PathBuf {
-        self.vault_path()
-            .join(SERVER_FILE_VIRTUAL_FILE_META.replace(ID_PARAM, &id.to_string()))
-    }
-
-    /// Get the virtual file with the given ID
-    pub fn virtual_file(&self, id: &VirtualFileId) -> Option<VirtualFile<'_>> {
-        let dir = self.virtual_file_dir(id.clone());
-        if dir.exists() {
-            Some(VirtualFile {
-                id: id.clone(),
-                current_vault: self,
-            })
-        } else {
-            None
-        }
-    }
-
-    /// Get the meta data of the virtual file with the given ID
-    pub async fn virtual_file_meta(
-        &self,
-        id: &VirtualFileId,
-    ) -> Result<VirtualFileMeta, std::io::Error> {
-        let dir = self.virtual_file_meta_path(id);
-        let metadata = VirtualFileMeta::read_from(dir).await?;
-        Ok(metadata)
-    }
-
-    /// Write the meta data of the virtual file with the given ID
-    pub async fn write_virtual_file_meta(
-        &self,
-        id: &VirtualFileId,
-        meta: &VirtualFileMeta,
-    ) -> Result<(), std::io::Error> {
-        let dir = self.virtual_file_meta_path(id);
-        VirtualFileMeta::write_to(meta, dir).await?;
-        Ok(())
-    }
-
-    /// Create a virtual file from a connection instance
-    ///
-    /// It's the only way to create virtual files!
-    ///
-    /// When the target machine executes `write_file`, use this function instead of `read_file`,
-    ///    and provide the member ID of the transmitting member.
-    ///
-    /// The system will automatically receive the file and
-    ///    create the virtual file.
-    pub async fn create_virtual_file_from_connection(
-        &self,
-        instance: &mut ConnectionInstance,
-        member_id: &MemberId,
-    ) -> Result<VirtualFileId, std::io::Error> {
-        const FIRST_VERSION: &str = "0";
-        let receive_path = self.virtual_file_temp_path();
-        let new_id = format!("vf_{}", Uuid::new_v4());
-        let move_path = self.virtual_file_real_path(&new_id, &FIRST_VERSION.to_string());
-
-        match instance.read_file(receive_path.clone()).await {
-            Ok(_) => {
-                // Read successful, create virtual file
-                // Create default version description
-                let mut version_description =
-                    HashMap::<VirtualFileVersion, VirtualFileVersionDescription>::new();
-                version_description.insert(
-                    FIRST_VERSION.to_string(),
-                    VirtualFileVersionDescription {
-                        creator: member_id.clone(),
-                        description: "Track".to_string(),
-                    },
-                );
-                // Create metadata
-                let mut meta = VirtualFileMeta {
-                    current_version: FIRST_VERSION.to_string(),
-                    hold_member: String::default(),
-                    version_description,
-                    histories: Vec::default(),
-                };
-
-                // Add first version
-                meta.histories.push(FIRST_VERSION.to_string());
-
-                // Write metadata to file
-                VirtualFileMeta::write_to(&meta, self.virtual_file_meta_path(&new_id)).await?;
-
-                // Move temp file to virtual file directory
-                if let Some(parent) = move_path.parent() {
-                    if !parent.exists() {
-                        fs::create_dir_all(parent).await?;
-                    }
-                }
-                fs::rename(receive_path, move_path).await?;
-
-                Ok(new_id)
-            }
-            Err(e) => {
-                // Read failed, remove temp file.
-                if receive_path.exists() {
-                    fs::remove_file(receive_path).await?;
-                }
-
-                Err(Error::new(ErrorKind::Other, e))
-            }
-        }
-    }
-
-    /// Update a virtual file from a connection instance
-    ///
-    /// It's the only way to update virtual files!
-    /// When the target machine executes `write_file`, use this function instead of `read_file`,
-    ///    and provide the member ID of the transmitting member.
-    ///
-    /// The system will automatically receive the file and
-    ///    update the virtual file.
-    ///
-    /// Note: The specified member must hold the edit right of the file,
-    ///    otherwise the file reception will not be allowed.
-    ///
-    /// Make sure to obtain the edit right of the file before calling this function.
-    pub async fn update_virtual_file_from_connection(
-        &self,
-        instance: &mut ConnectionInstance,
-        member: &MemberId,
-        virtual_file_id: &VirtualFileId,
-        new_version: &VirtualFileVersion,
-        description: VirtualFileVersionDescription,
-    ) -> Result<(), std::io::Error> {
-        let new_version = snake_case!(new_version.clone());
-        let mut meta = self.virtual_file_meta(virtual_file_id).await?;
-
-        // Check if the member has edit right
-        self.check_virtual_file_edit_right(member, virtual_file_id)
-            .await?;
-
-        // Check if the new version already exists
-        if meta.version_description.contains_key(&new_version) {
-            return Err(Error::new(
-                ErrorKind::AlreadyExists,
-                format!(
-                    "Version `{}` already exists for virtual file `{}`",
-                    new_version, virtual_file_id
-                ),
-            ));
-        }
-
-        // Verify success
-        let receive_path = self.virtual_file_temp_path();
-        let move_path = self.virtual_file_real_path(virtual_file_id, &new_version);
-
-        match instance.read_file(receive_path.clone()).await {
-            Ok(_) => {
-                // Read success, move temp file to real path.
-                fs::rename(receive_path, move_path).await?;
-
-                // Update metadata
-                meta.current_version = new_version.clone();
-                meta.version_description
-                    .insert(new_version.clone(), description);
-                meta.histories.push(new_version);
-                VirtualFileMeta::write_to(&meta, self.virtual_file_meta_path(virtual_file_id))
-                    .await?;
-
-                return Ok(());
-            }
-            Err(e) => {
-                // Read failed, remove temp file.
-                if receive_path.exists() {
-                    fs::remove_file(receive_path).await?;
-                }
-
-                return Err(Error::new(ErrorKind::Other, e));
-            }
-        }
-    }
-
-    /// Update virtual file from existing version
-    ///
-    /// This operation creates a new version based on the specified old version file instance.
-    /// The new version will retain the same version name as the old version, but use a different version number.
-    /// After the update, this version will be considered newer than the original version when comparing versions.
-    pub async fn update_virtual_file_from_exist_version(
-        &self,
-        member: &MemberId,
-        virtual_file_id: &VirtualFileId,
-        old_version: &VirtualFileVersion,
-    ) -> Result<(), std::io::Error> {
-        let old_version = snake_case!(old_version.clone());
-        let mut meta = self.virtual_file_meta(virtual_file_id).await?;
-
-        // Check if the member has edit right
-        self.check_virtual_file_edit_right(member, virtual_file_id)
-            .await?;
-
-        // Ensure virtual file exist
-        let Some(_) = self.virtual_file(virtual_file_id) else {
-            return Err(Error::new(
-                ErrorKind::NotFound,
-                format!("Virtual file `{}` not found!", virtual_file_id),
-            ));
-        };
-
-        // Ensure version exist
-        if !meta.version_exists(&old_version) {
-            return Err(Error::new(
-                ErrorKind::NotFound,
-                format!("Version `{}` not found!", old_version),
-            ));
-        }
-
-        // Ok, Create new version
-        meta.current_version = old_version.clone();
-        meta.histories.push(old_version);
-        VirtualFileMeta::write_to(&meta, self.virtual_file_meta_path(virtual_file_id)).await?;
-
-        Ok(())
-    }
-
-    /// Grant a member the edit right for a virtual file
-    /// This operation takes effect immediately upon success
-    pub async fn grant_virtual_file_edit_right(
-        &self,
-        member_id: &MemberId,
-        virtual_file_id: &VirtualFileId,
-    ) -> Result<(), std::io::Error> {
-        let mut meta = self.virtual_file_meta(virtual_file_id).await?;
-        meta.hold_member = member_id.clone();
-        self.write_virtual_file_meta(virtual_file_id, &meta).await
-    }
-
-    /// Check if a member has the edit right for a virtual file
-    pub async fn has_virtual_file_edit_right(
-        &self,
-        member_id: &MemberId,
-        virtual_file_id: &VirtualFileId,
-    ) -> Result<bool, std::io::Error> {
-        let meta = self.virtual_file_meta(virtual_file_id).await?;
-        Ok(meta.hold_member.eq(member_id))
-    }
-
-    /// Check if a member has the edit right for a virtual file and return Result
-    /// Returns Ok(()) if the member has edit right, otherwise returns PermissionDenied error
-    pub async fn check_virtual_file_edit_right(
-        &self,
-        member_id: &MemberId,
-        virtual_file_id: &VirtualFileId,
-    ) -> Result<(), std::io::Error> {
-        if !self
-            .has_virtual_file_edit_right(member_id, virtual_file_id)
-            .await?
-        {
-            return Err(Error::new(
-                ErrorKind::PermissionDenied,
-                format!(
-                    "Member `{}` not allowed to update virtual file `{}`",
-                    member_id, virtual_file_id
-                ),
-            ));
-        }
-        Ok(())
-    }
-
-    /// Revoke the edit right for a virtual file from the current holder
-    /// This operation takes effect immediately upon success
-    pub async fn revoke_virtual_file_edit_right(
-        &self,
-        virtual_file_id: &VirtualFileId,
-    ) -> Result<(), std::io::Error> {
-        let mut meta = self.virtual_file_meta(virtual_file_id).await?;
-        meta.hold_member = String::default();
-        self.write_virtual_file_meta(virtual_file_id, &meta).await
-    }
-}
-
-impl<'a> VirtualFile<'a> {
-    /// Get id of VirtualFile
-    pub fn id(&self) -> VirtualFileId {
-        self.id.clone()
-    }
-
-    /// Read metadata of VirtualFile
-    pub async fn read_meta(&self) -> Result<VirtualFileMeta, std::io::Error> {
-        self.current_vault.virtual_file_meta(&self.id).await
-    }
-}
-
-impl VirtualFileMeta {
-    /// Get all versions of the virtual file
-    pub fn versions(&self) -> &Vec<VirtualFileVersion> {
-        &self.histories
-    }
-
-    /// Get the total number of versions for this virtual file
-    pub fn version_len(&self) -> i32 {
-        self.histories.len() as i32
-    }
-
-    /// Check if a specific version exists
-    /// Returns true if the version exists, false otherwise
-    pub fn version_exists(&self, version: &VirtualFileVersion) -> bool {
-        self.versions().iter().any(|v| v == version)
-    }
-
-    /// Get the version number (index) for a given version name
-    /// Returns None if the version doesn't exist
-    pub fn version_num(&self, version: &VirtualFileVersion) -> Option<i32> {
-        self.histories
-            .iter()
-            .rev()
-            .position(|v| v == version)
-            .map(|pos| (self.histories.len() - 1 - pos) as i32)
-    }
-
-    /// Get the version name for a given version number (index)
-    /// Returns None if the version number is out of range
-    pub fn version_name(&self, version_num: i32) -> Option<VirtualFileVersion> {
-        self.histories.get(version_num as usize).cloned()
-    }
-}