Add a store_path method on the FFI client.

bindings/matrix-sdk-ffi/src/api.udl

@@ -40,6 +40,8 @@ interface Client {
     [Throws=ClientError]
     void restore_login(string restore_token);
 
+    string? store_path();
+
     string homeserver();
 
     void start_sync();

bindings/matrix-sdk-ffi/src/client.rs

@@ -68,6 +68,10 @@ impl Client {
         })
     }
 
+    pub fn store_path(&self) -> Option<String> {
+        self.client.store().path().and_then(|path| path.into_os_string().into_string().ok())
+    }
+
     pub fn set_delegate(&self, delegate: Option<Box<dyn ClientDelegate>>) {
         *self.delegate.write() = delegate;
     }

crates/matrix-sdk-base/src/store/memory_store.rs

@@ -16,6 +16,7 @@
 use std::collections::{BTreeMap, HashMap};
 use std::{
     collections::BTreeSet,
+    path::PathBuf,
     sync::{Arc, RwLock},
 };
 
@@ -692,6 +693,10 @@ impl MemoryStore {
 #[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
 #[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 impl StateStore for MemoryStore {
+    fn path(&self) -> Option<PathBuf> {
+        None
+    }
+
     async fn save_filter(&self, filter_name: &str, filter_id: &str) -> Result<()> {
         self.save_filter(filter_name, filter_id).await
     }

crates/matrix-sdk-base/src/store/mod.rs

@@ -23,6 +23,7 @@
 use std::{
     collections::{BTreeMap, BTreeSet},
     ops::Deref,
+    path::PathBuf,
     pin::Pin,
     result::Result as StdResult,
     sync::Arc,
@@ -130,6 +131,9 @@ pub type Result<T, E = StoreError> = std::result::Result<T, E>;
 #[cfg_attr(target_arch = "wasm32", async_trait(?Send))]
 #[cfg_attr(not(target_arch = "wasm32"), async_trait)]
 pub trait StateStore: AsyncTraitDeps {
+    /// The path used by the store, or `None` if the store is in memory.
+    fn path(&self) -> Option<PathBuf>;
+
     /// Save the given filter id under the given name.
     ///
     /// # Arguments
@@ -464,6 +468,11 @@ impl Store {
         self.session.get()
     }
 
+    /// The path used by the store, or `None` if the store is in memory.
+    pub fn path(&self) -> Option<PathBuf> {
+        self.inner.path()
+    }
+
     /// Get all the rooms this store knows about.
     pub fn get_rooms(&self) -> Vec<Room> {
         self.rooms.iter().filter_map(|r| self.get_room(r.key())).collect()

crates/matrix-sdk-sled/src/state_store.rs

@@ -1381,6 +1381,9 @@ impl SledStore {
 
 #[async_trait]
 impl StateStore for SledStore {
+    fn path(&self) -> Option<PathBuf> {
+        self.path.clone()
+    }
     async fn save_filter(&self, filter_name: &str, filter_id: &str) -> StoreResult<()> {
         self.save_filter(filter_name, filter_id).await.map_err(Into::into)
     }