feat(export): move csv and xlsx generation to Rust backend

src-tauri/src/commands/csv_export.rs

@@ -0,0 +1,17 @@
+use dbx_core::csv_export::format_csv;
+use serde::Deserialize;
+use serde_json::Value;
+
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct QueryResultCsvExportRequest {
+    pub file_path: String,
+    pub columns: Vec<String>,
+    pub rows: Vec<Vec<Value>>,
+}
+
+#[tauri::command]
+pub fn export_query_result_csv(request: QueryResultCsvExportRequest) -> Result<(), String> {
+    let csv = format_csv(&request.columns, &request.rows);
+    std::fs::write(&request.file_path, format!("\u{FEFF}{csv}")).map_err(|err| err.to_string())
+}

src-tauri/src/commands/mod.rs

@@ -4,6 +4,7 @@ pub mod app_settings;
 pub mod connection;
 #[allow(dead_code, unused_imports)]
 mod connection_secrets;
+pub mod csv_export;
 pub mod database_export;
 pub mod deep_link;
 pub mod external_sql;

src-tauri/src/commands/xlsx_export.rs

@@ -0,0 +1,22 @@
+use dbx_core::xlsx_export::{build_xlsx_workbook, XlsxWorksheetData};
+use serde::Deserialize;
+use serde_json::Value;
+
+#[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct QueryResultXlsxExportRequest {
+    pub file_path: String,
+    pub sheet_name: Option<String>,
+    pub columns: Vec<String>,
+    pub rows: Vec<Vec<Value>>,
+}
+
+#[tauri::command]
+pub fn export_query_result_xlsx(request: QueryResultXlsxExportRequest) -> Result<(), String> {
+    let workbook = build_xlsx_workbook(&XlsxWorksheetData {
+        sheet_name: request.sheet_name,
+        columns: request.columns,
+        rows: request.rows,
+    })?;
+    std::fs::write(&request.file_path, workbook).map_err(|err| err.to_string())
+}

src-tauri/src/lib.rs

@@ -337,6 +337,7 @@ pub fn run() {
             commands::transfer::cancel_transfer,
             commands::database_export::export_database_sql,
             commands::database_export::cancel_database_export,
+            commands::csv_export::export_query_result_csv,
             commands::xlsx_export::export_query_result_xlsx,
             commands::agents::list_installed_agents,
             commands::agents::list_installed_agents_local,