Migrate LiveSync flows to provider-owned resources

src/common/replicatorResources/synchronisationInformation.ts

@@ -0,0 +1,35 @@
+import type { SynchronisationInformationResourceFactory } from "@vrtmrz/livesync-commonlib/replication";
+import {
+    LiveSyncCouchDBReplicator,
+    type LiveSyncCouchDBReplicatorEnv,
+} from "@vrtmrz/livesync-commonlib/compat/replication/couchdb/LiveSyncReplicator";
+import { checkSyncInfo } from "@vrtmrz/livesync-commonlib/compat/pouchdb/negotiation";
+import { createReplicatorDisposer, snapshotRemoteSettings } from "./shared";
+
+/** Build an owned CouchDB synchronisation-information verifier for one host. */
+export function createCouchDBSynchronisationInformationResourceFactory(
+    host: LiveSyncCouchDBReplicatorEnv
+): SynchronisationInformationResourceFactory {
+    return (setting) => {
+        const snapshot = snapshotRemoteSettings(setting);
+        const replicator = new LiveSyncCouchDBReplicator(host);
+        return Promise.resolve({
+            check: async () => {
+                const connection = await replicator.connectRemoteCouchDBWithSetting(
+                    snapshot,
+                    replicator.isMobile(),
+                    true
+                );
+                if (typeof connection === "string") {
+                    return false;
+                }
+                try {
+                    return await checkSyncInfo(connection.db);
+                } finally {
+                    await connection.close();
+                }
+            },
+            dispose: createReplicatorDisposer(replicator),
+        });
+    };
+}