fix invalid values in RPC response about database instance details

src/rpc.rs

@@ -338,6 +338,92 @@ impl RpcServerImpl {
 
         Ok(())
     }
+
+    /// Build database file path for given server/db_id
+    fn db_file_path(&self, server: &Server, db_id: u64) -> std::path::PathBuf {
+        std::path::PathBuf::from(&server.option.dir).join(format!("{}.db", db_id))
+    }
+
+    /// Recursively compute size on disk for the database path
+    fn compute_size_on_disk(&self, path: &std::path::Path) -> Option<u64> {
+        fn dir_size(p: &std::path::Path) -> u64 {
+            if p.is_file() {
+                std::fs::metadata(p).map(|m| m.len()).unwrap_or(0)
+            } else if p.is_dir() {
+                let mut total = 0u64;
+                if let Ok(read) = std::fs::read_dir(p) {
+                    for entry in read.flatten() {
+                        total += dir_size(&entry.path());
+                    }
+                }
+                total
+            } else {
+                0
+            }
+        }
+        Some(dir_size(path))
+    }
+
+    /// Extract created and last access times (secs) from a path, with fallbacks
+    fn get_file_times_secs(path: &std::path::Path) -> (u64, Option<u64>) {
+        let now = std::time::SystemTime::now();
+        let created = std::fs::metadata(path)
+            .and_then(|m| m.created().or_else(|_| m.modified()))
+            .unwrap_or(now)
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap_or_default()
+            .as_secs();
+
+        let last_access = std::fs::metadata(path)
+            .and_then(|m| m.accessed())
+            .ok()
+            .and_then(|t| t.duration_since(std::time::UNIX_EPOCH).ok().map(|d| d.as_secs()));
+
+        (created, last_access)
+    }
+
+    /// Compose a DatabaseInfo by probing storage, metadata and filesystem
+    async fn build_database_info(&self, db_id: u64, server: &Server) -> DatabaseInfo {
+        // Probe storage to determine encryption state
+        let storage = server.current_storage().ok();
+        let encrypted = storage.as_ref().map(|s| s.is_encrypted()).unwrap_or(server.option.encrypt);
+
+        // Load meta to get access key count
+        let meta = Self::load_meta_static(&self.base_dir, db_id).await.unwrap_or(DatabaseMeta {
+            public: true,
+            keys: HashMap::new(),
+        });
+        let key_count = Some(meta.keys.len() as u64);
+
+        // Compute size on disk and timestamps
+        let db_path = self.db_file_path(server, db_id);
+        let size_on_disk = self.compute_size_on_disk(&db_path);
+
+        let meta_path = std::path::PathBuf::from(&self.base_dir).join(format!("{}_meta.json", db_id));
+        let (created_at, last_access) = if meta_path.exists() {
+            Self::get_file_times_secs(&meta_path)
+        } else {
+            Self::get_file_times_secs(&db_path)
+        };
+
+        let backend = match server.option.backend {
+            crate::options::BackendType::Redb => BackendType::Redb,
+            crate::options::BackendType::Sled => BackendType::Sled,
+        };
+
+        DatabaseInfo {
+            id: db_id,
+            name: None,
+            backend,
+            encrypted,
+            redis_version: Some("7.0".to_string()),
+            storage_path: Some(server.option.dir.clone()),
+            size_on_disk,
+            key_count,
+            created_at,
+            last_access,
+        }
+    }
 }
 
 #[jsonrpsee::core::async_trait]
@@ -426,28 +512,9 @@ impl RpcServer for RpcServerImpl {
         let mut result = Vec::new();
 
         for db_id in db_ids {
-            // Try to get or create server for this database
             if let Ok(server) = self.get_or_create_server(db_id).await {
-                let backend = match server.option.backend {
-                    crate::options::BackendType::Redb => BackendType::Redb,
-                    crate::options::BackendType::Sled => BackendType::Sled,
-                };
-
-                let info = DatabaseInfo {
-                    id: db_id,
-                    name: None, // TODO: Store name in server metadata
-                    backend,
-                    encrypted: server.option.encrypt,
-                    redis_version: Some("7.0".to_string()), // Default Redis compatibility
-                    storage_path: Some(server.option.dir.clone()),
-                    size_on_disk: None, // TODO: Calculate actual size
-                    key_count: None, // TODO: Get key count from storage
-                    created_at: std::time::SystemTime::now()
-                        .duration_since(std::time::UNIX_EPOCH)
-                        .unwrap()
-                        .as_secs(),
-                    last_access: None,
-                };
+                // Build accurate info from storage/meta/fs
+                let info = self.build_database_info(db_id, &server).await;
                 result.push(info);
             }
         }
@@ -457,27 +524,9 @@ impl RpcServer for RpcServerImpl {
 
     async fn get_database_info(&self, db_id: u64) -> RpcResult<DatabaseInfo> {
         let server = self.get_or_create_server(db_id).await?;
-
-        let backend = match server.option.backend {
-            crate::options::BackendType::Redb => BackendType::Redb,
-            crate::options::BackendType::Sled => BackendType::Sled,
-        };
-
-        Ok(DatabaseInfo {
-            id: db_id,
-            name: None,
-            backend,
-            encrypted: server.option.encrypt,
-            redis_version: Some("7.0".to_string()),
-            storage_path: Some(server.option.dir.clone()),
-            size_on_disk: None,
-            key_count: None,
-            created_at: std::time::SystemTime::now()
-                .duration_since(std::time::UNIX_EPOCH)
-                .unwrap()
-                .as_secs(),
-            last_access: None,
-        })
+        // Build accurate info from storage/meta/fs
+        let info = self.build_database_info(db_id, &server).await;
+        Ok(info)
     }
 
     async fn delete_database(&self, db_id: u64) -> RpcResult<bool> {