Add VirtualFs tag-mode WebDAV + MyFiles UI + Admin WebDAV endpoint

- VirtualFs: SQLite-backed virtual folders (tag mode), 16 unit tests
- MyFiles module: API endpoints + Web UI for folder/tag management
- Admin WebDAV: /admin-webdav/*path with Basic Auth + URI prefix rewrite
- CLI: webdav-folder/tag/untag/list/start --virtual-mode commands
- Deployed and tested on M5Max48: PROPFIND, PUT, GET, DELETE all working

markbase-core/src/cli/interface/webdav.rs

@@ -19,13 +19,65 @@ pub enum WebdavCommand {
         port: u16,
         #[arg(short, long)]
         user: String,
+        #[arg(long, help = "Enable SQLite virtual directory mode")]
+        virtual_mode: bool,
+        #[arg(long, help = "SQLite database path for virtual directories")]
+        db: Option<String>,
+    },
+
+    #[command(name = "webdav-folder")]
+    Folder {
+        #[arg(long, help = "Action: add, remove")]
+        action: String,
+        #[arg(long, help = "Virtual folder name (e.g. photos)")]
+        name: String,
+        #[arg(long, help = "Description for the folder")]
+        description: Option<String>,
+        #[arg(long, default_value = "data/webdav_virtual.sqlite")]
+        db: String,
+    },
+
+    #[command(name = "webdav-tag")]
+    Tag {
+        #[arg(long, help = "Filename to tag (relative to root)")]
+        file: String,
+        #[arg(long, help = "Tag name (= virtual folder name)")]
+        tag: String,
+        #[arg(long, default_value = "data/webdav_virtual.sqlite")]
+        db: String,
+    },
+
+    #[command(name = "webdav-untag")]
+    Untag {
+        #[arg(long, help = "Filename to untag")]
+        file: String,
+        #[arg(long, help = "Tag name to remove")]
+        tag: String,
+        #[arg(long, default_value = "data/webdav_virtual.sqlite")]
+        db: String,
+    },
+
+    #[command(name = "webdav-list")]
+    List {
+        #[arg(long, help = "List folders, or files in a folder")]
+        what: Option<String>,
+        #[arg(long, help = "Folder name (for listing files in a folder)")]
+        folder: Option<String>,
+        #[arg(long, help = "Filename (for listing tags of a file)")]
+        file: Option<String>,
+        #[arg(long, default_value = "data/webdav_virtual.sqlite")]
+        db: String,
     },
 }
 
 pub async fn handle_webdav_command(cmd: WebdavCommand) -> anyhow::Result<()> {
     match cmd {
-        WebdavCommand::Start { port, user } => {
-            // Parse username and optional password (format: "name:password")
+        WebdavCommand::Start {
+            port,
+            user,
+            virtual_mode,
+            db,
+        } => {
             let username = user.split(':').next().unwrap_or(&user).to_string();
             let password = user.split(':').nth(1).map(|s| s.to_string());
 
@@ -48,9 +100,103 @@ pub async fn handle_webdav_command(cmd: WebdavCommand) -> anyhow::Result<()> {
             }
             println!("Port: {}", port);
             println!("Home: {}", home_dir.display());
+            if virtual_mode {
+                let db_path = db.clone().unwrap_or_else(|| "data/webdav_virtual.sqlite".to_string());
+                println!("Virtual mode: enabled (db: {})", db_path);
+            }
             println!();
 
-            run_webdav_server(port, home_dir, username, password).await?;
+            run_webdav_server(port, home_dir, username, password, virtual_mode, db).await?;
+        }
+
+        WebdavCommand::Folder {
+            action,
+            name,
+            description,
+            db,
+        } => {
+            let vfs = crate::vfs::virtual_fs::VirtualFs::new(&db, PathBuf::from("/tmp"))?;
+            let folder = if name.starts_with('/') {
+                name
+            } else {
+                format!("/{}", name)
+            };
+            match action.as_str() {
+                "add" => {
+                    let desc = description.unwrap_or_default();
+                    vfs.add_folder(&folder, &desc)?;
+                    println!("Added virtual folder: {} ({})", folder, desc);
+                }
+                "remove" => {
+                    vfs.remove_folder(&folder)?;
+                    println!("Removed virtual folder: {}", folder);
+                }
+                _ => {
+                    return Err(anyhow::anyhow!("Unknown action: {} (use add or remove)", action));
+                }
+            }
+        }
+
+        WebdavCommand::Tag { file, tag, db } => {
+            let vfs = crate::vfs::virtual_fs::VirtualFs::new(&db, PathBuf::from("/tmp"))?;
+            vfs.tag_file(&file, &tag)?;
+            println!("Tagged '{}' with '{}'", file, tag);
+        }
+
+        WebdavCommand::Untag { file, tag, db } => {
+            let vfs = crate::vfs::virtual_fs::VirtualFs::new(&db, PathBuf::from("/tmp"))?;
+            vfs.untag_file(&file, &tag)?;
+            println!("Untagged '{}' from '{}'", file, tag);
+        }
+
+        WebdavCommand::List {
+            what,
+            folder,
+            file,
+            db,
+        } => {
+            let vfs = crate::vfs::virtual_fs::VirtualFs::new(&db, PathBuf::from("/tmp"))?;
+            match what.as_deref() {
+                Some("folders") | None => {
+                    let folders = vfs.list_folders()?;
+                    if folders.is_empty() {
+                        println!("No virtual folders.");
+                    } else {
+                        println!("{:<30} {}", "Folder", "Description");
+                        println!("{}", "-".repeat(60));
+                        for (f, d) in folders {
+                            println!("{:<30} {}", f, d);
+                        }
+                    }
+                }
+                Some("files") => {
+                    let folder_name = folder.ok_or_else(|| anyhow::anyhow!("--folder required for listing files"))?;
+                    let files = vfs.list_files_in_folder(&folder_name)?;
+                    if files.is_empty() {
+                        println!("No files in folder '{}'", folder_name);
+                    } else {
+                        println!("Files in folder '{}':", folder_name);
+                        for f in files {
+                            println!("  {}", f);
+                        }
+                    }
+                }
+                Some("tags") => {
+                    let filename = file.ok_or_else(|| anyhow::anyhow!("--file required for listing tags"))?;
+                    let tags = vfs.list_tags_for_file(&filename)?;
+                    if tags.is_empty() {
+                        println!("No tags for file '{}'", filename);
+                    } else {
+                        println!("Tags for file '{}':", filename);
+                        for t in tags {
+                            println!("  {}", t);
+                        }
+                    }
+                }
+                Some(other) => {
+                    return Err(anyhow::anyhow!("Unknown list type: {} (use folders, files, or tags)", other));
+                }
+            }
         }
     }
     Ok(())
@@ -61,22 +207,36 @@ async fn run_webdav_server(
     home_dir: PathBuf,
     user: String,
     password: Option<String>,
+    virtual_mode: bool,
+    db: Option<String>,
 ) -> anyhow::Result<()> {
     use axum::{routing::any, Router};
     use tokio::net::TcpListener;
 
-    let vfs = Box::new(crate::vfs::local_fs::LocalFs::new());
-    let upload_hook = None;
+    let dav_handler = if virtual_mode {
+        let db_path = db.unwrap_or_else(|| "data/webdav_virtual.sqlite".to_string());
+        let vfs = crate::vfs::virtual_fs::VirtualFs::new(&db_path, home_dir.clone())?;
 
-    let dav_handler = crate::webdav::create_webdav_handler(vfs, home_dir.clone(), upload_hook, user.clone());
+        let folders = vfs.list_folders().unwrap_or_default();
+        println!("Virtual folders ({}):", folders.len());
+        for (f, d) in &folders {
+            println!("  {} - {}", f, d);
+        }
+        println!("Default root: {}", home_dir.display());
+        println!();
+        let vfs_boxed: Box<dyn crate::vfs::VfsBackend> = Box::new(vfs);
+        crate::webdav::create_webdav_handler_virtual(vfs_boxed, PathBuf::from("/"), None, user.clone())
+    } else {
+        let vfs = Box::new(crate::vfs::local_fs::LocalFs::new());
+        crate::webdav::create_webdav_handler(vfs, home_dir.clone(), None, user.clone())
+    };
 
     async fn webdav_auth_middleware(
         req: Request,
         next: middleware::Next,
     ) -> impl IntoResponse {
-        // Get credentials from extensions (without consuming)
         let expected = req.extensions().get::<crate::webdav::WebdavCredentials>().cloned();
-        
+
         let auth = req
             .headers()
             .get("Authorization")
@@ -107,7 +267,8 @@ async fn run_webdav_server(
                     HeaderValue::from_static("Basic realm=\"MarkBase WebDAV\""),
                 )],
                 Body::from("Unauthorized"),
-            ).into_response();
+            )
+                .into_response();
         }
 
         next.run(req).await
@@ -116,19 +277,23 @@ async fn run_webdav_server(
     let app = Router::new()
         .route("/", any(handle_dav))
         .route("/*path", any(handle_dav))
+        .layer(Extension(dav_handler))
+        .layer(middleware::from_fn(webdav_auth_middleware))
         .layer(Extension(crate::webdav::WebdavCredentials {
             username: user.clone(),
             password,
-        }))
-        .layer(Extension(dav_handler))
-        .layer(middleware::from_fn(webdav_auth_middleware));
+        }));
 
     let addr = format!("0.0.0.0:{}", port);
     let listener = TcpListener::bind(&addr).await?;
 
     println!("WebDAV server listening on http://{}", addr);
-    println!("Root: {}", home_dir.display());
     println!("User: {}", user);
+    if virtual_mode {
+        println!("Mode: Virtual (SQLite tag-based)");
+    } else {
+        println!("Mode: Local");
+    }
     println!();
     println!("Press Ctrl+C to stop");
 
@@ -143,4 +308,4 @@ async fn handle_dav(
     req: Request,
 ) -> impl IntoResponse {
     dav.handle(req).await
-}
+}

markbase-core/src/lib.rs

@@ -9,6 +9,7 @@ pub mod command;
 pub mod config;
 pub mod download;
 pub mod import_markdown;
+pub mod myfiles;
 pub mod pg_client;
 pub mod provider;
 pub mod render;

markbase-core/src/myfiles.rs

@@ -0,0 +1,533 @@
+use axum::{
+    extract::{Path, Query, State},
+    http::StatusCode,
+    response::{Html, Json},
+};
+use rusqlite::{params, Connection};
+use serde::{Deserialize, Serialize};
+use std::path::PathBuf;
+
+use crate::server::AppState;
+
+const SCHEMA: &str = "
+CREATE TABLE IF NOT EXISTS virtual_folders (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    folder TEXT NOT NULL UNIQUE,
+    description TEXT DEFAULT '',
+    created_at TEXT DEFAULT (datetime('now'))
+);
+CREATE TABLE IF NOT EXISTS file_tags (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    filename TEXT NOT NULL,
+    tag TEXT NOT NULL,
+    UNIQUE(filename, tag)
+);
+CREATE INDEX IF NOT EXISTS idx_file_tags_tag ON file_tags(tag);
+CREATE INDEX IF NOT EXISTS idx_file_tags_filename ON file_tags(filename);
+";
+
+fn user_db_path(state: &AppState, username: &str) -> PathBuf {
+    let root = std::env::var("MB_WEBDAV_PARENT")
+        .unwrap_or_else(|_| "/Users/accusys/momentry/var/sftpgo/data".to_string());
+    PathBuf::from(root)
+        .join(username)
+        .join("webdav_virtual.sqlite")
+}
+
+fn user_root(username: &str) -> PathBuf {
+    let root = std::env::var("MB_WEBDAV_PARENT")
+        .unwrap_or_else(|_| "/Users/accusys/momentry/var/sftpgo/data".to_string());
+    PathBuf::from(root).join(username)
+}
+
+fn ensure_schema(db_path: &PathBuf) -> anyhow::Result<Connection> {
+    let conn = Connection::open(db_path)
+        .map_err(|e| anyhow::anyhow!("Failed to open DB: {}", e))?;
+    conn.execute_batch(SCHEMA)
+        .map_err(|e| anyhow::anyhow!("Failed to create schema: {}", e))?;
+    Ok(conn)
+}
+
+#[derive(Serialize)]
+pub struct FolderInfo {
+    pub name: String,
+    pub description: String,
+    pub file_count: usize,
+}
+
+#[derive(Serialize)]
+pub struct FileInfo {
+    pub name: String,
+    pub size: u64,
+    pub tags: Vec<String>,
+}
+
+#[derive(Deserialize)]
+pub struct FolderRequest {
+    pub name: String,
+    pub description: Option<String>,
+}
+
+#[derive(Deserialize)]
+pub struct TagRequest {
+    pub file: String,
+    pub tag: String,
+}
+
+pub async fn list_folders(
+    State(state): State<AppState>,
+    Path(username): Path<String>,
+) -> Result<Json<Vec<FolderInfo>>, (StatusCode, String)> {
+    let db_path = user_db_path(&state, &username);
+    let conn = ensure_schema(&db_path).map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let mut stmt = conn
+        .prepare("SELECT folder, description FROM virtual_folders ORDER BY folder")
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+    let folders: Vec<(String, String)> = stmt
+        .query_map([], |row| Ok((row.get(0)?, row.get(1)?)))
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?
+        .filter_map(|r| r.ok())
+        .collect();
+
+    let mut result = Vec::new();
+    for (folder, desc) in folders {
+        let tag = folder.trim_start_matches('/').to_string();
+        let count: usize = conn
+            .query_row(
+                "SELECT COUNT(*) FROM file_tags WHERE tag = ?1",
+                params![tag],
+                |row| row.get(0),
+            )
+            .unwrap_or(0);
+        result.push(FolderInfo {
+            name: folder,
+            description: desc,
+            file_count: count,
+        });
+    }
+    Ok(Json(result))
+}
+
+pub async fn create_folder(
+    State(state): State<AppState>,
+    Path(username): Path<String>,
+    Json(req): Json<FolderRequest>,
+) -> Result<Json<serde_json::Value>, (StatusCode, String)> {
+    let db_path = user_db_path(&state, &username);
+    let conn = ensure_schema(&db_path).map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let folder = if req.name.starts_with('/') {
+        req.name
+    } else {
+        format!("/{}", req.name)
+    };
+    let desc = req.description.unwrap_or_default();
+
+    conn.execute(
+        "INSERT OR IGNORE INTO virtual_folders (folder, description) VALUES (?1, ?2)",
+        params![folder, desc],
+    )
+    .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    Ok(Json(serde_json::json!({
+        "status": "ok",
+        "folder": folder,
+        "description": desc
+    })))
+}
+
+pub async fn delete_folder(
+    State(state): State<AppState>,
+    Path((username, folder_name)): Path<(String, String)>,
+) -> Result<Json<serde_json::Value>, (StatusCode, String)> {
+    let db_path = user_db_path(&state, &username);
+    let conn = ensure_schema(&db_path).map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let folder = if folder_name.starts_with('/') {
+        folder_name
+    } else {
+        format!("/{}", folder_name)
+    };
+    let tag = folder.trim_start_matches('/').to_string();
+
+    conn.execute("DELETE FROM file_tags WHERE tag = ?1", params![tag])
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+    conn.execute("DELETE FROM virtual_folders WHERE folder = ?1", params![folder])
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    Ok(Json(serde_json::json!({"status": "ok", "deleted": folder})))
+}
+
+pub async fn list_files(
+    State(state): State<AppState>,
+    Path(username): Path<String>,
+    Query(q): Query<serde_json::Map<String, serde_json::Value>>,
+) -> Result<Json<Vec<FileInfo>>, (StatusCode, String)> {
+    let root = user_root(&username);
+    let db_path = user_db_path(&state, &username);
+    let conn = ensure_schema(&db_path).map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let folder_filter = q.get("folder").and_then(|v| v.as_str()).map(|s| s.to_string());
+
+    let filenames: Vec<String> = if let Some(folder) = &folder_filter {
+        let tag = folder.trim_start_matches('/');
+        let rows: Vec<String> = conn
+            .prepare("SELECT filename FROM file_tags WHERE tag = ?1 ORDER BY filename")
+            .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?
+            .query_map(params![tag], |row| row.get::<_, String>(0))
+            .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?
+            .filter_map(|r| r.ok())
+            .collect();
+        rows
+    } else {
+        let mut entries = Vec::new();
+        if let Ok(rd) = std::fs::read_dir(&root) {
+            for entry in rd.flatten() {
+                if entry.path().is_file() {
+                    if let Some(name) = entry.file_name().to_str() {
+                        entries.push(name.to_string());
+                    }
+                }
+            }
+        }
+        entries.sort();
+        entries
+    };
+
+    let mut result = Vec::new();
+    for fname in filenames {
+        let size = std::fs::metadata(root.join(&fname))
+            .map(|m| m.len())
+            .unwrap_or(0);
+
+        let mut tags_stmt = conn
+            .prepare("SELECT tag FROM file_tags WHERE filename = ?1 ORDER BY tag")
+            .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+        let tags: Vec<String> = tags_stmt
+            .query_map(params![fname], |row| row.get::<_, String>(0))
+            .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?
+            .filter_map(|r| r.ok())
+            .collect();
+
+        result.push(FileInfo {
+            name: fname,
+            size,
+            tags,
+        });
+    }
+
+    Ok(Json(result))
+}
+
+pub async fn add_tag(
+    State(state): State<AppState>,
+    Path(username): Path<String>,
+    Json(req): Json<TagRequest>,
+) -> Result<Json<serde_json::Value>, (StatusCode, String)> {
+    let db_path = user_db_path(&state, &username);
+    let conn = ensure_schema(&db_path).map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let folder = if req.tag.starts_with('/') {
+        req.tag.clone()
+    } else {
+        format!("/{}", req.tag)
+    };
+    let tag = folder.trim_start_matches('/').to_string();
+
+    conn.execute(
+        "INSERT OR IGNORE INTO virtual_folders (folder, description) VALUES (?1, '')",
+        params![folder],
+    )
+    .ok();
+
+    conn.execute(
+        "INSERT OR IGNORE INTO file_tags (filename, tag) VALUES (?1, ?2)",
+        params![req.file, tag],
+    )
+    .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    Ok(Json(serde_json::json!({
+        "status": "ok",
+        "file": req.file,
+        "tag": tag
+    })))
+}
+
+pub async fn remove_tag(
+    State(state): State<AppState>,
+    Path(username): Path<String>,
+    Json(req): Json<TagRequest>,
+) -> Result<Json<serde_json::Value>, (StatusCode, String)> {
+    let db_path = user_db_path(&state, &username);
+    let conn = ensure_schema(&db_path).map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let tag = req.tag.trim_start_matches('/');
+
+    conn.execute(
+        "DELETE FROM file_tags WHERE filename = ?1 AND tag = ?2",
+        params![req.file, tag],
+    )
+    .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    Ok(Json(serde_json::json!({
+        "status": "ok",
+        "file": req.file,
+        "removed_tag": tag
+    })))
+}
+
+pub async fn file_tags(
+    State(state): State<AppState>,
+    Path((username, filename)): Path<(String, String)>,
+) -> Result<Json<Vec<String>>, (StatusCode, String)> {
+    let db_path = user_db_path(&state, &username);
+    let conn = ensure_schema(&db_path).map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+
+    let mut stmt = conn
+        .prepare("SELECT tag FROM file_tags WHERE filename = ?1 ORDER BY tag")
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?;
+    let tags: Vec<String> = stmt
+        .query_map(params![filename], |row| row.get::<_, String>(0))
+        .map_err(|e| (StatusCode::INTERNAL_SERVER_ERROR, e.to_string()))?
+        .filter_map(|r| r.ok())
+        .collect();
+
+    Ok(Json(tags))
+}
+
+pub async fn ui_page() -> Html<String> {
+    Html(MYFILES_HTML.to_string())
+}
+
+const MYFILES_HTML: &str = r#"<!DOCTYPE html>
+<html lang="zh-TW">
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<title>MyFiles — MarkBase</title>
+<style>
+* { margin: 0; padding: 0; box-sizing: border-box; }
+body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; background: #f5f5f7; color: #1d1d1f; }
+.header { background: #fff; border-bottom: 1px solid #d2d2d7; padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; }
+.header h1 { font-size: 20px; font-weight: 600; }
+.header .user-info { font-size: 14px; color: #6e6e73; }
+.container { display: flex; max-width: 1200px; margin: 0 auto; padding: 20px; gap: 20px; }
+.sidebar { width: 220px; flex-shrink: 0; }
+.sidebar h2 { font-size: 14px; color: #6e6e73; text-transform: uppercase; margin-bottom: 10px; }
+.folder-list { list-style: none; }
+.folder-list li { padding: 8px 12px; border-radius: 8px; cursor: pointer; display: flex; align-items: center; gap: 8px; font-size: 14px; }
+.folder-list li:hover { background: #e8e8ed; }
+.folder-list li.active { background: #0071e3; color: #fff; }
+.folder-list .count { margin-left: auto; font-size: 12px; opacity: 0.6; }
+.main { flex: 1; min-width: 0; }
+.toolbar { display: flex; gap: 8px; margin-bottom: 16px; align-items: center; }
+.toolbar input[type="text"] { flex: 1; padding: 8px 12px; border: 1px solid #d2d2d7; border-radius: 8px; font-size: 14px; }
+.btn { padding: 8px 16px; border: none; border-radius: 8px; cursor: pointer; font-size: 14px; font-weight: 500; }
+.btn-primary { background: #0071e3; color: #fff; }
+.btn-primary:hover { background: #0058b0; }
+.btn-secondary { background: #e8e8ed; color: #1d1d1f; }
+.btn-secondary:hover { background: #d2d2d7; }
+.btn-danger { background: #ff3b30; color: #fff; }
+.btn-danger:hover { background: #cc2918; }
+.file-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 12px; }
+.file-card { background: #fff; border-radius: 12px; padding: 12px; border: 1px solid #e8e8ed; }
+.file-card .name { font-size: 14px; font-weight: 500; word-break: break-all; margin-bottom: 4px; }
+.file-card .size { font-size: 12px; color: #6e6e73; margin-bottom: 8px; }
+.file-card .tags { display: flex; flex-wrap: wrap; gap: 4px; }
+.tag { font-size: 11px; padding: 2px 8px; border-radius: 10px; background: #e8e8ed; }
+.tag.blue { background: #d1e8ff; color: #0058b0; }
+.empty { text-align: center; padding: 60px; color: #6e6e73; }
+.modal-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 100; align-items: center; justify-content: center; }
+.modal-overlay.show { display: flex; }
+.modal { background: #fff; border-radius: 16px; padding: 24px; min-width: 320px; max-width: 400px; }
+.modal h3 { font-size: 18px; margin-bottom: 16px; }
+.modal label { font-size: 14px; color: #6e6e73; display: block; margin-bottom: 4px; }
+.modal input { width: 100%; padding: 8px 12px; border: 1px solid #d2d2d7; border-radius: 8px; font-size: 14px; margin-bottom: 12px; }
+.modal .actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
+</style>
+</head>
+<body>
+<div class="header">
+  <h1>📁 MyFiles</h1>
+  <div class="user-info" id="user-info">Loading...</div>
+</div>
+<div class="container">
+  <div class="sidebar">
+    <h2>Folders</h2>
+    <ul class="folder-list" id="folder-list">
+      <li class="active" data-folder="">All Files</li>
+    </ul>
+    <div style="margin-top:16px">
+      <button class="btn btn-secondary" onclick="showNewFolderModal()" style="width:100%">+ New Folder</button>
+    </div>
+  </div>
+  <div class="main">
+    <div class="toolbar">
+      <input type="text" id="search" placeholder="Search files..." oninput="loadFiles()">
+      <button class="btn btn-primary" onclick="showUploadModal()">Upload</button>
+    </div>
+    <div class="file-grid" id="file-grid"></div>
+    <div class="empty" id="empty-state" style="display:none">No files found</div>
+  </div>
+</div>
+<div class="modal-overlay" id="folder-modal">
+  <div class="modal">
+    <h3>New Folder</h3>
+    <label>Folder Name</label>
+    <input type="text" id="folder-name" placeholder="e.g. photos">
+    <label>Description</label>
+    <input type="text" id="folder-desc" placeholder="Optional description">
+    <div class="actions">
+      <button class="btn btn-secondary" onclick="hideFolderModal()">Cancel</button>
+      <button class="btn btn-primary" onclick="createFolder()">Create</button>
+    </div>
+  </div>
+</div>
+<div class="modal-overlay" id="tag-modal">
+  <div class="modal">
+    <h3>Tag File</h3>
+    <p style="margin-bottom:12px;font-size:14px" id="tag-filename"></p>
+    <label>Tag / Folder</label>
+    <input type="text" id="tag-name" placeholder="e.g. photos">
+    <div class="actions">
+      <button class="btn btn-secondary" onclick="hideTagModal()">Cancel</button>
+      <button class="btn btn-primary" onclick="addTag()">Tag</button>
+    </div>
+  </div>
+</div>
+<script>
+const API = '/api/v2/myfiles';
+let username = 'demo';
+let currentFolder = '';
+let allFiles = [];
+
+async function init() {
+  try {
+    const res = await fetch('/api/v2/auth/verify');
+    const data = await res.json();
+    if (data.user) username = data.user;
+  } catch(e) {}
+  document.getElementById('user-info').textContent = 'User: ' + username;
+  loadFolders();
+  loadFiles();
+}
+
+async function loadFolders() {
+  try {
+    const res = await fetch(`${API}/${username}/folders`);
+    const folders = await res.json();
+    const list = document.getElementById('folder-list');
+    list.innerHTML = '<li class="active" data-folder="" onclick="selectFolder(\'\')">All Files</li>';
+    for (const f of folders) {
+      const li = document.createElement('li');
+      li.dataset.folder = f.name;
+      li.onclick = () => selectFolder(f.name);
+      li.innerHTML = `📁 ${f.name} <span class="count">${f.file_count}</span>`;
+      list.appendChild(li);
+    }
+  } catch(e) { console.error(e); }
+}
+
+async function loadFiles() {
+  const search = document.getElementById('search').value;
+  let url = `${API}/${username}/files`;
+  if (currentFolder) url += `?folder=${encodeURIComponent(currentFolder)}`;
+  try {
+    const res = await fetch(url);
+    allFiles = await res.json();
+    const filtered = search ? allFiles.filter(f => f.name.toLowerCase().includes(search.toLowerCase())) : allFiles;
+    renderFiles(filtered);
+  } catch(e) { console.error(e); }
+}
+
+function renderFiles(files) {
+  const grid = document.getElementById('file-grid');
+  const empty = document.getElementById('empty-state');
+  grid.innerHTML = '';
+  if (files.length === 0) { empty.style.display = 'block'; return; }
+  empty.style.display = 'none';
+  for (const f of files) {
+    const card = document.createElement('div');
+    card.className = 'file-card';
+    let tagHtml = '';
+    for (const t of f.tags) {
+      tagHtml += `<span class="tag blue" onclick="event.stopPropagation();removeTag('${f.name}','${t}')" style="cursor:pointer">${t} ×</span>`;
+    }
+    tagHtml += `<span class="tag" onclick="showTagModal('${f.name}')" style="cursor:pointer">+ tag</span>`;
+    card.innerHTML = `
+      <div class="name">${f.name}</div>
+      <div class="size">${formatSize(f.size)}</div>
+      <div class="tags">${tagHtml}</div>
+    `;
+    grid.appendChild(card);
+  }
+}
+
+function formatSize(bytes) {
+  if (bytes < 1024) return bytes + ' B';
+  if (bytes < 1048576) return (bytes/1024).toFixed(1) + ' KB';
+  if (bytes < 1073741824) return (bytes/1048576).toFixed(1) + ' MB';
+  return (bytes/1073741824).toFixed(1) + ' GB';
+}
+
+function selectFolder(folder) {
+  currentFolder = folder;
+  document.querySelectorAll('.folder-list li').forEach(li => li.classList.remove('active'));
+  const target = document.querySelector(`[data-folder="${folder}"]`);
+  if (target) target.classList.add('active');
+  loadFiles();
+}
+
+function showNewFolderModal() { document.getElementById('folder-modal').classList.add('show'); }
+function hideFolderModal() { document.getElementById('folder-modal').classList.remove('show'); }
+
+async function createFolder() {
+  const name = document.getElementById('folder-name').value.trim();
+  const desc = document.getElementById('folder-desc').value.trim();
+  if (!name) return;
+  await fetch(`${API}/${username}/folders`, {
+    method: 'POST', headers: {'Content-Type': 'application/json'},
+    body: JSON.stringify({name, description: desc})
+  });
+  document.getElementById('folder-name').value = '';
+  document.getElementById('folder-desc').value = '';
+  hideFolderModal();
+  loadFolders();
+}
+
+function showTagModal(filename) {
+  document.getElementById('tag-filename').textContent = filename;
+  document.getElementById('tag-name').value = '';
+  document.getElementById('tag-modal').classList.add('show');
+}
+function hideTagModal() { document.getElementById('tag-modal').classList.remove('show'); }
+
+async function addTag() {
+  const filename = document.getElementById('tag-filename').textContent;
+  const tag = document.getElementById('tag-name').value.trim();
+  if (!tag) return;
+  await fetch(`${API}/${username}/tags`, {
+    method: 'POST', headers: {'Content-Type': 'application/json'},
+    body: JSON.stringify({file: filename, tag})
+  });
+  hideTagModal();
+  loadFolders();
+  loadFiles();
+}
+
+async function removeTag(file, tag) {
+  await fetch(`${API}/${username}/tags`, {
+    method: 'DELETE', headers: {'Content-Type': 'application/json'},
+    body: JSON.stringify({file, tag})
+  });
+  loadFolders();
+  loadFiles();
+}
+
+function showUploadModal() { alert('Upload via WebDAV at http://webdav.momentry.ddns.net (user: ' + username + ')'); }
+
+init();
+</script>
+</body>
+</html>"#;

markbase-core/src/server.rs

@@ -290,6 +290,17 @@ pub async fn run(port: u16, file: Option<String>) -> anyhow::Result<()> {
         .route("/webdav", any(handle_webdav_multi))
         .route("/webdav/", any(handle_webdav_multi))
         .route("/webdav/*path", any(handle_webdav_multi))
+        // Admin WebDAV (browse all user directories)
+        .route("/admin-webdav", any(handle_webdav_admin))
+        .route("/admin-webdav/", any(handle_webdav_admin))
+        .route("/admin-webdav/*path", any(handle_webdav_admin))
+        // MyFiles User Interface (Web UI + API)
+        .route("/myfiles", get(crate::myfiles::ui_page))
+        .route("/api/v2/myfiles/:username/folders", get(crate::myfiles::list_folders).post(crate::myfiles::create_folder))
+        .route("/api/v2/myfiles/:username/folders/:folder_name", delete(crate::myfiles::delete_folder))
+        .route("/api/v2/myfiles/:username/files", get(crate::myfiles::list_files))
+        .route("/api/v2/myfiles/:username/tags", post(crate::myfiles::add_tag).delete(crate::myfiles::remove_tag))
+        .route("/api/v2/myfiles/:username/files/:filename/tags", get(crate::myfiles::file_tags))
         .layer(Extension(webdav_parent))
         .layer(Extension(upload_hook))
         .layer(Extension(webdav_versioning))
@@ -2624,3 +2635,86 @@ fn unauthorized_response() -> axum::response::Response {
         axum::body::Body::from("Unauthorized"),
     ).into_response()
 }
+
+static ADMIN_WEBDAV_HANDLER: LazyLock<Option<dav_server::DavHandler>> = LazyLock::new(|| {
+    let parent = std::env::var("MB_WEBDAV_PARENT")
+        .unwrap_or_else(|_| "/Users/accusys/momentry/var/sftpgo/data".to_string());
+    let parent_path = std::path::PathBuf::from(&parent);
+    if !parent_path.exists() {
+        return None;
+    }
+    let vfs: Box<dyn crate::vfs::VfsBackend> = Box::new(crate::vfs::local_fs::LocalFs::new());
+    let locks_dir = parent_path.join(".webdav_locks");
+    let _ = std::fs::create_dir_all(&locks_dir);
+    let locks_file = locks_dir.join("admin.json");
+    Some(crate::webdav::create_webdav_handler_persisted(
+        vfs,
+        parent_path,
+        None,
+        "admin".to_string(),
+        None,
+        locks_file,
+    ))
+});
+
+async fn handle_webdav_admin(
+    Extension(upload_hook): Extension<Arc<crate::ssh_server::upload_hook::UploadHook>>,
+    req: axum::extract::Request,
+) -> axum::response::Response {
+    let admin_users = std::env::var("MB_WEBDAV_ADMIN_USERS")
+        .unwrap_or_else(|_| "admin:admin123".to_string());
+
+    let auth = req
+        .headers()
+        .get("Authorization")
+        .and_then(|v| v.to_str().ok())
+        .filter(|v| v.starts_with("Basic "))
+        .and_then(|v| {
+            let encoded = &v[6..];
+            let decoded = base64::engine::general_purpose::STANDARD.decode(encoded).ok()?;
+            let creds = String::from_utf8(decoded).ok()?;
+            let colon = creds.find(':')?;
+            Some((creds[..colon].to_string(), creds[colon + 1..].to_string()))
+        });
+
+    let valid = match auth {
+        Some(ref creds) => {
+            admin_users.split(',')
+                .filter_map(|entry| {
+                    let mut parts = entry.splitn(2, ':');
+                    let u = parts.next()?.to_string();
+                    let p = parts.next().unwrap_or("").to_string();
+                    Some((u, p))
+                })
+                .any(|(u, p)| u == creds.0 && p == creds.1)
+        }
+        None => false,
+    };
+
+    if !valid {
+        return unauthorized_response();
+    }
+
+    let handler = match ADMIN_WEBDAV_HANDLER.as_ref() {
+        Some(h) => h.clone(),
+        None => return unauthorized_response(),
+    };
+
+    let (mut parts, body) = req.into_parts();
+    let new_path = parts.uri.path().strip_prefix("/admin-webdav").unwrap_or("/");
+    let new_path = if new_path.is_empty() || !new_path.starts_with('/') {
+        format!("/{}", new_path)
+    } else {
+        new_path.to_string()
+    };
+    let builder = axum::http::Uri::builder().path_and_query(new_path.as_str());
+    if let Ok(uri) = builder.build() {
+        parts.uri = uri;
+    }
+    let req = axum::http::Request::from_parts(parts, body);
+
+    let dav_resp = handler.handle(req).await;
+    let (parts, body) = dav_resp.into_parts();
+    let axum_body = axum::body::Body::from_stream(body);
+    axum::response::Response::from_parts(parts, axum_body)
+}

markbase-core/src/vfs/mod.rs

@@ -9,6 +9,7 @@ pub mod smb_fs;
 #[cfg(feature = "smb-server")]
 pub mod smb_server_backend;
 pub mod util;
+pub mod virtual_fs;
 #[cfg(feature = "async-vfs")]
 pub mod async_fs;
 #[cfg(feature = "async-vfs")]

markbase-core/src/vfs/virtual_fs.rs

@@ -0,0 +1,737 @@
+use super::local_fs::LocalFs;
+use super::open_flags::OpenFlags;
+use super::{VfsBackend, VfsDirEntry, VfsError, VfsFile, VfsStat};
+use rusqlite::{params, Connection};
+use std::path::{Path, PathBuf};
+use std::sync::{Arc, Mutex};
+
+const SCHEMA: &str = "
+CREATE TABLE IF NOT EXISTS virtual_folders (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    folder TEXT NOT NULL UNIQUE,
+    description TEXT DEFAULT '',
+    created_at TEXT DEFAULT (datetime('now'))
+);
+
+CREATE TABLE IF NOT EXISTS file_tags (
+    id INTEGER PRIMARY KEY AUTOINCREMENT,
+    filename TEXT NOT NULL,
+    tag TEXT NOT NULL,
+    UNIQUE(filename, tag)
+);
+
+CREATE INDEX IF NOT EXISTS idx_file_tags_tag ON file_tags(tag);
+CREATE INDEX IF NOT EXISTS idx_file_tags_filename ON file_tags(filename);
+
+CREATE TABLE IF NOT EXISTS webdav_config (
+    key TEXT PRIMARY KEY,
+    value TEXT NOT NULL
+);
+";
+
+
+
+pub struct VirtualFs {
+    db: Arc<Mutex<Connection>>,
+    backend: Box<dyn VfsBackend>,
+    root: PathBuf,
+}
+
+fn normalize_folder(folder: &str) -> String {
+    let f = folder.trim_start_matches('/');
+    format!("/{}", f.trim_end_matches('/'))
+}
+
+fn folder_to_tag(folder: &str) -> String {
+    folder.trim_matches('/').to_string()
+}
+
+
+
+impl VirtualFs {
+    pub fn new(db_path: &str, root: PathBuf) -> Result<Self, VfsError> {
+        let conn = Connection::open(db_path).map_err(|e| VfsError::Io(e.to_string()))?;
+        conn.execute_batch(SCHEMA)
+            .map_err(|e| VfsError::Io(e.to_string()))?;
+        let backend = Box::new(LocalFs::new());
+        Ok(Self {
+            db: Arc::new(Mutex::new(conn)),
+            backend,
+            root,
+        })
+    }
+
+    fn load_folders(&self) -> Vec<String> {
+        let db = self.db.lock().unwrap();
+        let mut stmt = match db.prepare("SELECT folder FROM virtual_folders ORDER BY folder") {
+            Ok(s) => s,
+            Err(_) => return vec![],
+        };
+        let rows = stmt
+            .query_map([], |row| row.get::<_, String>(0))
+            .ok();
+        rows.map(|r| r.filter_map(|e| e.ok()).collect())
+            .unwrap_or_default()
+    }
+
+    fn files_with_tag(&self, tag: &str) -> Vec<String> {
+        let db = self.db.lock().unwrap();
+        let mut stmt = match db.prepare("SELECT filename FROM file_tags WHERE tag = ?1 ORDER BY filename") {
+            Ok(s) => s,
+            Err(_) => return vec![],
+        };
+        let rows = stmt
+            .query_map(params![tag], |row| row.get::<_, String>(0))
+            .ok();
+        rows.map(|r| r.filter_map(|e| e.ok()).collect())
+            .unwrap_or_default()
+    }
+
+    fn tags_for_file(&self, filename: &str) -> Vec<String> {
+        let db = self.db.lock().unwrap();
+        let mut stmt = match db.prepare("SELECT tag FROM file_tags WHERE filename = ?1 ORDER BY tag") {
+            Ok(s) => s,
+            Err(_) => return vec![],
+        };
+        let rows = stmt
+            .query_map(params![filename], |row| row.get::<_, String>(0))
+            .ok();
+        rows.map(|r| r.filter_map(|e| e.ok()).collect())
+            .unwrap_or_default()
+    }
+
+    fn is_virtual_folder(&self, path: &Path) -> Option<String> {
+        let path_str = path.to_string_lossy().to_string();
+        let normalized = normalize_folder(&path_str);
+        if normalized == "/" {
+            return None;
+        }
+        let folders = self.load_folders();
+        for folder in &folders {
+            if normalized == folder.as_str() || normalized.starts_with(&format!("{}/", folder)) {
+                return Some(folder.clone());
+            }
+        }
+        None
+    }
+
+    fn resolve(&self, virtual_path: &Path) -> (PathBuf, Option<String>, Option<String>) {
+        let path_str = virtual_path.to_string_lossy().to_string();
+        let normalized = if path_str.starts_with('/') {
+            path_str.clone()
+        } else {
+            format!("/{}", path_str)
+        };
+
+        if normalized == "/" || normalized.is_empty() {
+            return (self.root.clone(), None, None);
+        }
+
+        let folders = self.load_folders();
+        for folder in &folders {
+            let folder_tag = folder_to_tag(folder);
+            let folder_prefix = format!("{}/", folder);
+            if normalized == folder.as_str() {
+                return (self.root.clone(), Some(folder_tag), None);
+            }
+            if normalized.starts_with(&folder_prefix) {
+                let filename = normalized[folder_prefix.len()..].to_string();
+                return (self.root.join(&filename), Some(folder_tag), Some(filename));
+            }
+        }
+
+        let relative = normalized.trim_start_matches('/');
+        (self.root.join(relative), None, Some(relative.to_string()))
+    }
+
+    fn check_writable(&self) -> Result<(), VfsError> {
+        Ok(())
+    }
+
+    pub fn add_folder(&self, folder: &str, description: &str) -> Result<(), VfsError> {
+        let db = self.db.lock().unwrap();
+        let f = normalize_folder(folder);
+        db.execute(
+            "INSERT OR IGNORE INTO virtual_folders (folder, description) VALUES (?1, ?2)",
+            params![f, description],
+        )
+        .map_err(|e| VfsError::Io(e.to_string()))?;
+        Ok(())
+    }
+
+    pub fn remove_folder(&self, folder: &str) -> Result<(), VfsError> {
+        let db = self.db.lock().unwrap();
+        let f = normalize_folder(folder);
+        let tag = folder_to_tag(&f);
+        db.execute("DELETE FROM file_tags WHERE tag = ?1", params![tag])
+            .map_err(|e| VfsError::Io(e.to_string()))?;
+        db.execute("DELETE FROM virtual_folders WHERE folder = ?1", params![f])
+            .map_err(|e| VfsError::Io(e.to_string()))?;
+        Ok(())
+    }
+
+    pub fn tag_file(&self, filename: &str, tag: &str) -> Result<(), VfsError> {
+        let db = self.db.lock().unwrap();
+        db.execute(
+            "INSERT OR IGNORE INTO file_tags (filename, tag) VALUES (?1, ?2)",
+            params![filename, tag],
+        )
+        .map_err(|e| VfsError::Io(e.to_string()))?;
+        Ok(())
+    }
+
+    pub fn untag_file(&self, filename: &str, tag: &str) -> Result<(), VfsError> {
+        let db = self.db.lock().unwrap();
+        db.execute(
+            "DELETE FROM file_tags WHERE filename = ?1 AND tag = ?2",
+            params![filename, tag],
+        )
+        .map_err(|e| VfsError::Io(e.to_string()))?;
+        Ok(())
+    }
+
+    pub fn list_folders(&self) -> Result<Vec<(String, String)>, VfsError> {
+        let db = self.db.lock().unwrap();
+        let mut stmt = db
+            .prepare("SELECT folder, description FROM virtual_folders ORDER BY folder")
+            .map_err(|e| VfsError::Io(e.to_string()))?;
+        let rows = stmt
+            .query_map([], |row| Ok((row.get(0)?, row.get(1)?)))
+            .map_err(|e| VfsError::Io(e.to_string()))?;
+        Ok(rows.filter_map(|r| r.ok()).collect())
+    }
+
+    pub fn list_files_in_folder(&self, folder: &str) -> Result<Vec<String>, VfsError> {
+        let tag = folder_to_tag(folder);
+        Ok(self.files_with_tag(&tag))
+    }
+
+    pub fn list_tags_for_file(&self, filename: &str) -> Result<Vec<String>, VfsError> {
+        Ok(self.tags_for_file(filename))
+    }
+
+    pub fn set_config(&self, key: &str, value: &str) -> Result<(), VfsError> {
+        let db = self.db.lock().unwrap();
+        db.execute(
+            "INSERT OR REPLACE INTO webdav_config (key, value) VALUES (?1, ?2)",
+            params![key, value],
+        )
+        .map_err(|e| VfsError::Io(e.to_string()))?;
+        Ok(())
+    }
+
+    pub fn get_config(&self, key: &str) -> Option<String> {
+        let db = self.db.lock().unwrap();
+        db.query_row(
+            "SELECT value FROM webdav_config WHERE key = ?1",
+            params![key],
+            |row| row.get(0),
+        )
+        .ok()
+    }
+
+    pub fn root(&self) -> &Path {
+        &self.root
+    }
+
+    fn remove_all_tags(&self, filename: &str) -> Result<(), VfsError> {
+        let db = self.db.lock().unwrap();
+        db.execute("DELETE FROM file_tags WHERE filename = ?1", params![filename])
+            .map_err(|e| VfsError::Io(e.to_string()))?;
+        Ok(())
+    }
+
+    fn move_tags(&self, old_filename: &str, new_filename: &str) -> Result<(), VfsError> {
+        let db = self.db.lock().unwrap();
+        db.execute(
+            "UPDATE OR IGNORE file_tags SET filename = ?1 WHERE filename = ?2",
+            params![new_filename, old_filename],
+        )
+        .map_err(|e| VfsError::Io(e.to_string()))?;
+        Ok(())
+    }
+
+    fn make_dir_entry(name: &str) -> VfsDirEntry {
+        let mut stat = VfsStat::new();
+        stat.is_dir = true;
+        stat.mode = 0o755;
+        VfsDirEntry {
+            name: name.to_string(),
+            long_name: name.to_string(),
+            stat,
+        }
+    }
+
+    fn make_file_entry(name: &str, stat: VfsStat) -> VfsDirEntry {
+        VfsDirEntry {
+            name: name.to_string(),
+            long_name: name.to_string(),
+            stat,
+        }
+    }
+}
+
+impl VfsBackend for VirtualFs {
+    fn clone_boxed(&self) -> Box<dyn VfsBackend> {
+        Box::new(VirtualFs {
+            db: self.db.clone(),
+            backend: self.backend.clone_boxed(),
+            root: self.root.clone(),
+        })
+    }
+
+    fn read_dir(&self, path: &Path) -> Result<Vec<VfsDirEntry>, VfsError> {
+        let (real, folder_tag, _) = self.resolve(path);
+
+        if let Some(tag) = folder_tag {
+            let files = self.files_with_tag(&tag);
+            let mut entries = Vec::new();
+            for filename in &files {
+                let file_path = self.root.join(filename);
+                if let Ok(stat) = self.backend.stat(&file_path) {
+                    let name = Path::new(filename)
+                        .file_name()
+                        .map(|n| n.to_string_lossy().to_string())
+                        .unwrap_or_else(|| filename.clone());
+                    entries.push(Self::make_file_entry(&name, stat));
+                } else {
+                    let stat = VfsStat::new();
+                    entries.push(Self::make_file_entry(filename, stat));
+                }
+            }
+            return Ok(entries);
+        }
+
+        let mut entries = self.backend.read_dir(&real)?;
+
+        let folders = self.load_folders();
+        for folder in &folders {
+            let name = folder.trim_start_matches('/').to_string();
+            if !entries.iter().any(|e| e.name == name) {
+                entries.push(Self::make_dir_entry(&name));
+            }
+        }
+        Ok(entries)
+    }
+
+    fn open_file(
+        &self,
+        path: &Path,
+        flags: &OpenFlags,
+    ) -> Result<Box<dyn VfsFile>, VfsError> {
+        self.check_writable()?;
+
+        if flags.create {
+            let (real, folder_tag, filename) = self.resolve(path);
+            let file = self.backend.open_file(&real, flags)?;
+
+            if let (Some(tag), Some(fname)) = (folder_tag, filename.as_ref()) {
+                let _ = self.tag_file(fname, &tag);
+            }
+            return Ok(file);
+        }
+
+        let (real, _, _) = self.resolve(path);
+        self.backend.open_file(&real, flags)
+    }
+
+    fn stat(&self, path: &Path) -> Result<VfsStat, VfsError> {
+        let (real, folder_tag, _) = self.resolve(path);
+
+        if folder_tag.is_some() && !real.exists() {
+            let file_count = match &folder_tag {
+                Some(tag) => self.files_with_tag(tag).len(),
+                None => 0,
+            };
+            if file_count > 0 || path == Path::new("/") {
+                let mut stat = VfsStat::new();
+                stat.is_dir = true;
+                stat.mode = 0o755;
+                return Ok(stat);
+            }
+        }
+
+        if folder_tag.is_some() && real == self.root {
+            let mut stat = VfsStat::new();
+            stat.is_dir = true;
+            stat.mode = 0o755;
+            return Ok(stat);
+        }
+
+        self.backend.stat(&real)
+    }
+
+    fn lstat(&self, path: &Path) -> Result<VfsStat, VfsError> {
+        self.stat(path)
+    }
+
+    fn create_dir(&self, path: &Path, _mode: u32) -> Result<(), VfsError> {
+        let path_str = path.to_string_lossy().to_string();
+        let normalized = normalize_folder(&path_str);
+
+        if normalized == "/" {
+            return Err(VfsError::AlreadyExists("/".to_string()));
+        }
+
+        if self.is_virtual_folder(path).is_some() {
+            return Err(VfsError::AlreadyExists(normalized));
+        }
+
+        self.add_folder(&normalized, "")?;
+        Ok(())
+    }
+
+    fn create_dir_all(&self, path: &Path, mode: u32) -> Result<(), VfsError> {
+        self.create_dir(path, mode)
+    }
+
+    fn remove_dir(&self, path: &Path) -> Result<(), VfsError> {
+        let path_str = path.to_string_lossy().to_string();
+        let normalized = normalize_folder(&path_str);
+
+        if self.is_virtual_folder(path).is_some() {
+            self.remove_folder(&normalized)?;
+            return Ok(());
+ }
+
+        let (real, _, _) = self.resolve(path);
+        self.backend.remove_dir(&real)
+    }
+
+    fn remove_file(&self, path: &Path) -> Result<(), VfsError> {
+        self.check_writable()?;
+
+        if self.is_virtual_folder(path).is_some() {
+            let (_, folder_tag, filename) = self.resolve(path);
+            if let (Some(tag), Some(fname)) = (folder_tag, filename) {
+                self.untag_file(&fname, &tag)?;
+                return Ok(());
+            }
+        }
+
+        let (real, _, filename) = self.resolve(path);
+        self.backend.remove_file(&real)?;
+
+        if let Some(fname) = filename {
+            let _ = self.remove_all_tags(&fname);
+        }
+        Ok(())
+    }
+
+    fn rename(&self, from: &Path, to: &Path) -> Result<(), VfsError> {
+        self.check_writable()?;
+
+        let (_, from_tag, from_filename) = self.resolve(from);
+        let (_, to_tag, _to_filename) = self.resolve(to);
+
+        let from_is_folder = from_tag.is_some() && from_filename.is_none();
+
+        if from_is_folder {
+            return Err(VfsError::Unsupported("Cannot rename virtual folder".to_string()));
+        }
+
+        match (from_tag, to_tag, from_filename.as_ref()) {
+            (Some(ft), Some(tt), Some(fname)) => {
+                if ft != tt {
+                    self.untag_file(fname, &ft)?;
+                    self.tag_file(fname, &tt)?;
+                }
+                return Ok(());
+            }
+            (None, Some(tt), Some(fname)) => {
+                self.tag_file(fname, &tt)?;
+                return Ok(());
+            }
+            (Some(ft), None, Some(fname)) => {
+                self.untag_file(fname, &ft)?;
+                return Ok(());
+            }
+            _ => {}
+        }
+
+        if self.is_virtual_folder(to).is_some() {
+            let (_, from_tag, from_filename) = self.resolve(from);
+            let (_, to_tag, _) = self.resolve(to);
+
+            match (from_tag, to_tag, from_filename) {
+                (Some(ft), Some(tt), Some(fname)) => {
+                    if ft != tt {
+                        self.untag_file(&fname, &ft)?;
+                        self.tag_file(&fname, &tt)?;
+                    }
+                    return Ok(());
+                }
+                (None, Some(tt), Some(fname)) => {
+                    self.tag_file(&fname, &tt)?;
+                    return Ok(());
+                }
+                (Some(ft), None, Some(fname)) => {
+                    self.untag_file(&fname, &ft)?;
+                    return Ok(());
+                }
+                _ => {}
+            }
+        }
+
+        let (real_from, _, from_filename) = self.resolve(from);
+        let (real_to, _, to_filename) = self.resolve(to);
+
+        self.backend.rename(&real_from, &real_to)?;
+
+        if let (Some(old_name), Some(new_name)) = (from_filename, to_filename) {
+            self.move_tags(&old_name, &new_name)?;
+        }
+        Ok(())
+    }
+
+    fn set_stat(&self, path: &Path, stat: &VfsStat) -> Result<(), VfsError> {
+        self.check_writable()?;
+        let (real, _, _) = self.resolve(path);
+        self.backend.set_stat(&real, stat)
+    }
+
+    fn read_link(&self, path: &Path) -> Result<PathBuf, VfsError> {
+        let (real, _, _) = self.resolve(path);
+        self.backend.read_link(&real)
+    }
+
+    fn create_symlink(&self, target: &Path, link: &Path) -> Result<(), VfsError> {
+        self.check_writable()?;
+        let (real_target, _, _) = self.resolve(target);
+        let (real_link, _, _) = self.resolve(link);
+        self.backend.create_symlink(&real_target, &real_link)
+    }
+
+    fn real_path(&self, path: &Path) -> Result<PathBuf, VfsError> {
+        let (real, _, _) = self.resolve(path);
+        self.backend.real_path(&real)
+    }
+
+    fn exists(&self, path: &Path) -> bool {
+        if self.is_virtual_folder(path).is_some() {
+            return true;
+        }
+
+        let (real, folder_tag, filename) = self.resolve(path);
+
+        if let Some(tag) = folder_tag {
+            if let Some(fname) = filename {
+                return self.backend.exists(&real)
+                    || self.tags_for_file(&fname).contains(&tag);
+            }
+            return true;
+        }
+
+        self.backend.exists(&real)
+    }
+
+    fn hard_link(&self, original: &Path, link: &Path) -> Result<(), VfsError> {
+        self.check_writable()?;
+        let (real_orig, _, _) = self.resolve(original);
+        let (real_link, _, _) = self.resolve(link);
+        self.backend.hard_link(&real_orig, &real_link)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use tempfile::TempDir;
+
+    fn setup() -> (TempDir, VirtualFs, TempDir) {
+        let db_dir = TempDir::new().unwrap();
+        let db_path = db_dir.path().join("test_vfs.sqlite");
+        let root_dir = TempDir::new().unwrap();
+        std::fs::write(root_dir.path().join("flower.jpg"), "image").unwrap();
+        std::fs::write(root_dir.path().join("report.pdf"), "pdf content").unwrap();
+        std::fs::write(root_dir.path().join("sunset.jpg"), "sunset").unwrap();
+
+        let vfs = VirtualFs::new(db_path.to_str().unwrap(), root_dir.path().to_path_buf())
+            .unwrap();
+        (db_dir, vfs, root_dir)
+    }
+
+    #[test]
+    fn test_add_folder() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "Photo collection").unwrap();
+        let folders = vfs.list_folders().unwrap();
+        assert_eq!(folders.len(), 1);
+        assert_eq!(folders[0].0, "/photos");
+    }
+
+    #[test]
+    fn test_remove_folder() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+        vfs.tag_file("flower.jpg", "photos").unwrap();
+        assert_eq!(vfs.files_with_tag("photos").len(), 1);
+
+        vfs.remove_folder("/photos").unwrap();
+        assert_eq!(vfs.list_folders().unwrap().len(), 0);
+        assert_eq!(vfs.files_with_tag("photos").len(), 0);
+    }
+
+    #[test]
+    fn test_tag_file() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+        vfs.add_folder("/nature", "").unwrap();
+
+        vfs.tag_file("flower.jpg", "photos").unwrap();
+        vfs.tag_file("flower.jpg", "nature").unwrap();
+
+        let tags = vfs.tags_for_file("flower.jpg");
+        assert!(tags.contains(&"photos".to_string()));
+        assert!(tags.contains(&"nature".to_string()));
+    }
+
+    #[test]
+    fn test_read_dir_root_shows_folders() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+
+        let entries = vfs.read_dir(Path::new("/")).unwrap();
+        assert!(entries.iter().any(|e| e.name == "photos" && e.stat.is_dir));
+        assert!(entries.iter().any(|e| e.name == "flower.jpg"));
+    }
+
+    #[test]
+    fn test_read_dir_virtual_folder() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+        vfs.tag_file("flower.jpg", "photos").unwrap();
+        vfs.tag_file("sunset.jpg", "photos").unwrap();
+
+        let entries = vfs.read_dir(Path::new("/photos")).unwrap();
+        let names: Vec<_> = entries.iter().map(|e| e.name.clone()).collect();
+        assert!(names.contains(&"flower.jpg".to_string()));
+        assert!(names.contains(&"sunset.jpg".to_string()));
+        assert!(!names.contains(&"report.pdf".to_string()));
+    }
+
+    #[test]
+    fn test_open_file_in_virtual_folder() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+
+        let flags = OpenFlags::new().read();
+        let file = vfs.open_file(Path::new("/photos/flower.jpg"), &flags).unwrap();
+        drop(file);
+    }
+
+    #[test]
+    fn test_create_file_auto_tags() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/docs", "").unwrap();
+
+        let flags = OpenFlags::new().write().create().truncate();
+        let file = vfs.open_file(Path::new("/docs/newfile.txt"), &flags).unwrap();
+        drop(file);
+
+        let tags = vfs.tags_for_file("newfile.txt");
+        assert!(tags.contains(&"docs".to_string()));
+    }
+
+    #[test]
+    fn test_remove_file_from_virtual_folder_untags() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+        vfs.tag_file("flower.jpg", "photos").unwrap();
+
+        vfs.remove_file(Path::new("/photos/flower.jpg")).unwrap();
+
+        assert!(std::path::Path::new(&vfs.root().join("flower.jpg")).exists());
+        let tags = vfs.tags_for_file("flower.jpg");
+        assert!(!tags.contains(&"photos".to_string()));
+    }
+
+    #[test]
+    fn test_remove_file_from_root_deletes() {
+        let (_db, vfs, root) = setup();
+        vfs.tag_file("flower.jpg", "photos").unwrap();
+
+        vfs.remove_file(Path::new("/flower.jpg")).unwrap();
+        assert!(!root.path().join("flower.jpg").exists());
+        assert_eq!(vfs.tags_for_file("flower.jpg").len(), 0);
+    }
+
+    #[test]
+    fn test_stat_virtual_folder() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+        vfs.tag_file("flower.jpg", "photos").unwrap();
+
+        let stat = vfs.stat(Path::new("/photos")).unwrap();
+        assert!(stat.is_dir);
+    }
+
+    #[test]
+    fn test_stat_file_in_virtual_folder() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+        vfs.tag_file("flower.jpg", "photos").unwrap();
+
+        let stat = vfs.stat(Path::new("/photos/flower.jpg")).unwrap();
+        assert_eq!(stat.size, 5);
+        assert!(!stat.is_dir);
+    }
+
+    #[test]
+    fn test_same_file_multiple_tags() {
+        let (_db, vfs, root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+        vfs.add_folder("/nature", "").unwrap();
+
+        vfs.tag_file("flower.jpg", "photos").unwrap();
+        vfs.tag_file("flower.jpg", "nature").unwrap();
+
+        let photos_entries = vfs.read_dir(Path::new("/photos")).unwrap();
+        let nature_entries = vfs.read_dir(Path::new("/nature")).unwrap();
+
+        assert!(photos_entries.iter().any(|e| e.name == "flower.jpg"));
+        assert!(nature_entries.iter().any(|e| e.name == "flower.jpg"));
+
+        assert!(root.path().join("flower.jpg").exists());
+    }
+
+    #[test]
+    fn test_rename_adds_tag() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+
+        vfs.rename(Path::new("/flower.jpg"), Path::new("/photos/flower.jpg"))
+            .unwrap();
+
+        let tags = vfs.tags_for_file("flower.jpg");
+        assert!(tags.contains(&"photos".to_string()));
+    }
+
+    #[test]
+    fn test_rename_removes_tag() {
+        let (_db, vfs, _root) = setup();
+        vfs.add_folder("/photos", "").unwrap();
+        vfs.tag_file("flower.jpg", "photos").unwrap();
+
+        vfs.rename(Path::new("/photos/flower.jpg"), Path::new("/flower.jpg"))
+            .unwrap();
+
+        let tags = vfs.tags_for_file("flower.jpg");
+        assert!(!tags.contains(&"photos".to_string()));
+    }
+
+    #[test]
+    fn test_create_virtual_dir() {
+        let (_db, vfs, _root) = setup();
+        vfs.create_dir(Path::new("/newfolder"), 0o755).unwrap();
+        let folders = vfs.list_folders().unwrap();
+        assert!(folders.iter().any(|(f, _)| f == "/newfolder"));
+    }
+
+    #[test]
+    fn test_config() {
+        let (_db, vfs, _root) = setup();
+        vfs.set_config("default_root", "/data/demo").unwrap();
+        assert_eq!(vfs.get_config("default_root"), Some("/data/demo".to_string()));
+    }
+}

markbase-core/src/webdav.rs

@@ -36,7 +36,7 @@ fn map_vfs_error(e: VfsError) -> FsError {
 }
 
 /// Expected credentials for WebDAV Basic Auth validation
-#[derive(Clone)]
+#[derive(Clone, Debug)]
 pub struct WebdavCredentials {
     pub username: String,
     pub password: Option<String>,
@@ -82,6 +82,7 @@ pub struct VfsDavFs {
     props_data: Arc<RwLock<HashMap<String, Vec<DavProp>>>>,
     props_path: PathBuf,
     enable_acl: bool,
+    virtual_mode: bool,
 }
 
 impl Clone for VfsDavFs {
@@ -95,6 +96,7 @@ impl Clone for VfsDavFs {
             props_data: self.props_data.clone(),
             props_path: self.props_path.clone(),
             enable_acl: self.enable_acl,
+            virtual_mode: self.virtual_mode,
         }
     }
 }
@@ -170,18 +172,16 @@ impl VfsDavFs {
         upload_hook: Option<Arc<UploadHook>>,
         user_uuid: String,
     ) -> Box<Self> {
-        let props_path = Self::dead_props_path(&root);
-        let props_data = Arc::new(RwLock::new(Self::load_props(vfs.as_ref(), &root)));
-        Box::new(Self {
-            vfs,
-            root,
-            upload_hook,
-            user_uuid,
-            versioning: None,
-            props_data,
-            props_path,
-            enable_acl: true,
-        })
+        Self::new_inner(vfs, root, upload_hook, user_uuid, None, false)
+    }
+
+    pub fn new_virtual(
+        vfs: Box<dyn VfsBackend>,
+        root: PathBuf,
+        upload_hook: Option<Arc<UploadHook>>,
+        user_uuid: String,
+    ) -> Box<Self> {
+        Self::new_inner(vfs, root, upload_hook, user_uuid, None, true)
     }
 
     pub fn with_versioning(
@@ -190,6 +190,17 @@ impl VfsDavFs {
         upload_hook: Option<Arc<UploadHook>>,
         user_uuid: String,
         versioning: Arc<WebDavVersioning>,
+    ) -> Box<Self> {
+        Self::new_inner(vfs, root, upload_hook, user_uuid, Some(versioning), false)
+    }
+
+    fn new_inner(
+        vfs: Box<dyn VfsBackend>,
+        root: PathBuf,
+        upload_hook: Option<Arc<UploadHook>>,
+        user_uuid: String,
+        versioning: Option<Arc<WebDavVersioning>>,
+        virtual_mode: bool,
     ) -> Box<Self> {
         let props_path = Self::dead_props_path(&root);
         let props_data = Arc::new(RwLock::new(Self::load_props(vfs.as_ref(), &root)));
@@ -198,10 +209,11 @@ impl VfsDavFs {
             root,
             upload_hook,
             user_uuid,
-            versioning: Some(versioning),
+            versioning,
             props_data,
             props_path,
             enable_acl: true,
+            virtual_mode,
         })
     }
 
@@ -218,10 +230,15 @@ impl VfsDavFs {
         let relative = path.as_rel_ospath();
         let full = self.root.join(relative);
 
-        // Path traversal protection: canonicalize root once
+        if self.virtual_mode {
+            if relative.components().any(|c| c == std::path::Component::ParentDir) {
+                return Err(FsError::NotFound);
+            }
+            return Ok(full);
+        }
+
         let root_canonical = self.root.canonicalize().map_err(|_| FsError::NotFound)?;
 
-        // If path exists, use canonicalized version
         if let Ok(canonical) = full.canonicalize() {
             if !canonical.starts_with(&root_canonical) {
                 return Err(FsError::NotFound);
@@ -229,15 +246,12 @@ impl VfsDavFs {
             return Ok(canonical);
         }
 
-        // Path doesn't exist yet (e.g., new file/dir being created).
-        // Validate parent directory is within root and no .. traversal.
         let parent = full.parent().ok_or(FsError::NotFound)?;
         let parent_canonical = parent.canonicalize().map_err(|_| FsError::NotFound)?;
         if !parent_canonical.starts_with(&root_canonical) {
             return Err(FsError::NotFound);
         }
 
-        // Sanity check: ensure relative path doesn't contain ".."
         if relative.components().any(|c| c == std::path::Component::ParentDir) {
             return Err(FsError::NotFound);
         }
@@ -1087,7 +1101,16 @@ pub fn create_webdav_handler(
     upload_hook: Option<Arc<UploadHook>>,
     user_uuid: String,
 ) -> dav_server::DavHandler {
-    create_webdav_handler_inner(vfs, root, upload_hook, user_uuid, None, None)
+    create_webdav_handler_inner(vfs, root, upload_hook, user_uuid, None, None, false)
+}
+
+pub fn create_webdav_handler_virtual(
+    vfs: Box<dyn VfsBackend>,
+    root: PathBuf,
+    upload_hook: Option<Arc<UploadHook>>,
+    user_uuid: String,
+) -> dav_server::DavHandler {
+    create_webdav_handler_inner(vfs, root, upload_hook, user_uuid, None, None, true)
 }
 
 pub fn create_webdav_handler_with_versioning(
@@ -1097,7 +1120,7 @@ pub fn create_webdav_handler_with_versioning(
     user_uuid: String,
     versioning: Arc<WebDavVersioning>,
 ) -> dav_server::DavHandler {
-    create_webdav_handler_inner(vfs, root, upload_hook, user_uuid, Some(versioning), None)
+    create_webdav_handler_inner(vfs, root, upload_hook, user_uuid, Some(versioning), None, false)
 }
 
 pub fn create_webdav_handler_persisted(
@@ -1108,7 +1131,7 @@ pub fn create_webdav_handler_persisted(
     versioning: Option<Arc<WebDavVersioning>>,
     locks_file: PathBuf,
 ) -> dav_server::DavHandler {
-    create_webdav_handler_inner(vfs, root, upload_hook, user_uuid, versioning, Some(locks_file))
+    create_webdav_handler_inner(vfs, root, upload_hook, user_uuid, versioning, Some(locks_file), false)
 }
 
 fn create_webdav_handler_inner(
@@ -1118,10 +1141,12 @@ fn create_webdav_handler_inner(
     user_uuid: String,
     versioning: Option<Arc<WebDavVersioning>>,
     locks_file: Option<PathBuf>,
+    virtual_mode: bool,
 ) -> dav_server::DavHandler {
-    let dav_fs = match versioning {
-        Some(v) => VfsDavFs::with_versioning(vfs, root, upload_hook, user_uuid, v),
-        None => VfsDavFs::new(vfs, root, upload_hook, user_uuid),
+    let dav_fs = match (versioning, virtual_mode) {
+        (Some(v), _) => VfsDavFs::with_versioning(vfs, root, upload_hook, user_uuid, v),
+        (None, true) => VfsDavFs::new_virtual(vfs, root, upload_hook, user_uuid),
+        (None, false) => VfsDavFs::new(vfs, root, upload_hook, user_uuid),
     };
     let locksystem: Box<dyn DavLockSystem> = match locks_file {
         Some(path) => PersistedLs::new(path),
@@ -1131,6 +1156,7 @@ fn create_webdav_handler_inner(
         .filesystem(dav_fs)
         .locksystem(locksystem)
         .strip_prefix("")
+        .autoindex(true)
         .build_handler()
 }