feat(export): support database setup and batch SQL scripts

apps/desktop/src/lib/sql/httpSqlFileProgress.ts

@@ -1,17 +1,31 @@
 import type { SqlFileProgress } from "@/lib/backend/tauri";
 import { apiUrl } from "@/lib/common/webPath";
 
-export function listenSqlFileProgressById(executionId: string, handler: (progress: SqlFileProgress) => void): () => void {
-  const es = new EventSource(apiUrl(`/api/sql-file/progress/${executionId}`));
-  es.onmessage = (e) => {
-    const progress: SqlFileProgress = JSON.parse(e.data);
-    handler(progress);
-    if (progress.status === "done" || progress.status === "error" || progress.status === "cancelled") {
-      es.close();
-    }
-  };
-  es.onerror = () => {
-    es.close();
-  };
-  return () => es.close();
+export function listenSqlFileProgressById(executionId: string, handler: (progress: SqlFileProgress) => void, onError?: (error: Error) => void): Promise<() => void> {
+  return new Promise((resolve, reject) => {
+    const es = new EventSource(apiUrl(`/api/sql-file/progress/${executionId}`));
+    let opened = false;
+    const close = () => es.close();
+
+    es.onopen = () => {
+      opened = true;
+      resolve(close);
+    };
+    es.onmessage = (e) => {
+      const progress: SqlFileProgress = JSON.parse(e.data);
+      handler(progress);
+      if (progress.status === "done" || progress.status === "error" || progress.status === "cancelled") {
+        close();
+      }
+    };
+    es.onerror = () => {
+      close();
+      const error = new Error("SQL file progress connection failed");
+      if (opened) {
+        onError?.(error);
+      } else {
+        reject(error);
+      }
+    };
+  });
 }