refactor(electron): use sqlite to store server clock & sync meta (#6957)

After this PR, IDB should not be used in desktop any longer.

packages/frontend/native/index.d.ts

@@ -13,6 +13,16 @@ export class SqliteConnection {
   getAllUpdates(): Promise<Array<UpdateRow>>
   insertUpdates(updates: Array<InsertRow>): Promise<void>
   replaceUpdates(docId: string | undefined | null, updates: Array<InsertRow>): Promise<void>
+  getServerClock(key: string): Promise<BlobRow | null>
+  setServerClock(key: string, data: Uint8Array): Promise<void>
+  getServerClockKeys(): Promise<Array<string>>
+  clearServerClock(): Promise<void>
+  delServerClock(key: string): Promise<void>
+  getSyncMetadata(key: string): Promise<BlobRow | null>
+  setSyncMetadata(key: string, data: Uint8Array): Promise<void>
+  getSyncMetadataKeys(): Promise<Array<string>>
+  clearSyncMetadata(): Promise<void>
+  delSyncMetadata(key: string): Promise<void>
   initVersion(): Promise<void>
   setVersion(version: number): Promise<void>
   getMaxVersion(): Promise<number>

packages/frontend/native/schema/src/lib.rs

@@ -15,5 +15,15 @@ CREATE TABLE IF NOT EXISTS "blobs" (
 CREATE TABLE IF NOT EXISTS "version_info" (
   version NUMBER NOT NULL,
   timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+CREATE TABLE IF NOT EXISTS "server_clock" (
+  key TEXT PRIMARY KEY NOT NULL,
+  data BLOB NOT NULL,
+  timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL
+);
+CREATE TABLE IF NOT EXISTS "sync_metadata" (
+  key TEXT PRIMARY KEY NOT NULL,
+  data BLOB NOT NULL,
+  timestamp TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL
 )
 "#;

packages/frontend/native/src/sqlite/mod.rs

@@ -252,6 +252,114 @@ impl SqliteConnection {
     Ok(())
   }
 
+  #[napi]
+  pub async fn get_server_clock(&self, key: String) -> Option<BlobRow> {
+    sqlx::query_as!(
+      BlobRow,
+      "SELECT key, data, timestamp FROM server_clock WHERE key = ?",
+      key
+    )
+    .fetch_one(&self.pool)
+    .await
+    .ok()
+  }
+
+  #[napi]
+  pub async fn set_server_clock(&self, key: String, data: Uint8Array) -> napi::Result<()> {
+    let data = data.as_ref();
+    sqlx::query!(
+      "INSERT INTO server_clock (key, data) VALUES ($1, $2) ON CONFLICT(key) DO UPDATE SET data = excluded.data",
+      key,
+      data,
+    )
+    .execute(&self.pool)
+    .await
+    .map_err(anyhow::Error::from)?;
+    Ok(())
+  }
+
+  #[napi]
+  pub async fn get_server_clock_keys(&self) -> napi::Result<Vec<String>> {
+    let keys = sqlx::query!("SELECT key FROM server_clock")
+      .fetch_all(&self.pool)
+      .await
+      .map(|rows| rows.into_iter().map(|row| row.key).collect())
+      .map_err(anyhow::Error::from)?;
+    Ok(keys)
+  }
+
+  #[napi]
+  pub async fn clear_server_clock(&self) -> napi::Result<()> {
+    sqlx::query!("DELETE FROM server_clock")
+      .execute(&self.pool)
+      .await
+      .map_err(anyhow::Error::from)?;
+    Ok(())
+  }
+
+  #[napi]
+  pub async fn del_server_clock(&self, key: String) -> napi::Result<()> {
+    sqlx::query!("DELETE FROM server_clock WHERE key = ?", key)
+      .execute(&self.pool)
+      .await
+      .map_err(anyhow::Error::from)?;
+    Ok(())
+  }
+
+  #[napi]
+  pub async fn get_sync_metadata(&self, key: String) -> Option<BlobRow> {
+    sqlx::query_as!(
+      BlobRow,
+      "SELECT key, data, timestamp FROM sync_metadata WHERE key = ?",
+      key
+    )
+    .fetch_one(&self.pool)
+    .await
+    .ok()
+  }
+
+  #[napi]
+  pub async fn set_sync_metadata(&self, key: String, data: Uint8Array) -> napi::Result<()> {
+    let data = data.as_ref();
+    sqlx::query!(
+      "INSERT INTO sync_metadata (key, data) VALUES ($1, $2) ON CONFLICT(key) DO UPDATE SET data = excluded.data",
+      key,
+      data,
+    )
+    .execute(&self.pool)
+    .await
+    .map_err(anyhow::Error::from)?;
+    Ok(())
+  }
+
+  #[napi]
+  pub async fn get_sync_metadata_keys(&self) -> napi::Result<Vec<String>> {
+    let keys = sqlx::query!("SELECT key FROM sync_metadata")
+      .fetch_all(&self.pool)
+      .await
+      .map(|rows| rows.into_iter().map(|row| row.key).collect())
+      .map_err(anyhow::Error::from)?;
+    Ok(keys)
+  }
+
+  #[napi]
+  pub async fn clear_sync_metadata(&self) -> napi::Result<()> {
+    sqlx::query!("DELETE FROM sync_metadata")
+      .execute(&self.pool)
+      .await
+      .map_err(anyhow::Error::from)?;
+    Ok(())
+  }
+
+  #[napi]
+  pub async fn del_sync_metadata(&self, key: String) -> napi::Result<()> {
+    sqlx::query!("DELETE FROM sync_metadata WHERE key = ?", key)
+      .execute(&self.pool)
+      .await
+      .map_err(anyhow::Error::from)?;
+    Ok(())
+  }
+
   #[napi]
   pub async fn init_version(&self) -> napi::Result<()> {
     // create version_info table