Bandada trial

app/lib/bandadaSemaphore/methods.ts

@@ -0,0 +1,59 @@
+import { Identity } from '@semaphore-protocol/identity';
+import { Group as SemaphoreGroup } from '@semaphore-protocol/group';
+import { ApiSdk, Group } from '@bandada/api-sdk';
+
+const bandadaApi = new ApiSdk();
+
+const apiKey = process.env.NEXT_PUBLIC_BANDADA_API_KEY!;
+const attestationGroupID = process.env.NEXT_PUBLIC_BANDADA_GROUP_ID!;
+
+export const createSemaphoreIdentity = (signature: string): string => {
+  /* determinsitic Identity from Signature */
+  const identity = new Identity(signature);
+  console.log('identity.commitment: ', identity.commitment);
+  localStorage.setItem('SemaphoreIdentity', identity.commitment.toString());
+  return identity.commitment.toString();
+};
+
+export const getUsersInBandadaGroup = async (): Promise<string[] | null> => {
+  try {
+    const { members } = await bandadaApi.getGroup(attestationGroupID);
+    return members;
+  }
+  catch (error: any) {
+    console.error(error);
+    return null;
+  }
+};
+
+export const getUserBandadaGroup = async (signature: string): Promise<Group | null> => {
+  const users = await getUsersInBandadaGroup();
+  let identityString = localStorage.getItem('SemaphoreIdentity');
+  if (!identityString) {
+    identityString = createSemaphoreIdentity(signature);
+  }
+  if (!users || !users.includes(identityString)) {
+    /* create bandada group */
+    try {
+      await bandadaApi.addMemberByApiKey(attestationGroupID, identityString, apiKey);
+      /* create group using semaphore */
+      const groupArray = await getUsersInBandadaGroup();
+      /* store the root in DB */
+      if (!groupArray) {
+        return null;
+      }
+      const group = new SemaphoreGroup(groupArray);
+      const groupRoot = group.root;
+      /* save group root in database */
+      return (await bandadaApi.getGroup(attestationGroupID));
+    }
+    catch (error: any) {
+      console.error(error);
+      if (error.response) {
+        console.error(error.response.statusText);
+      }
+      return null;
+    }
+  }
+  return (await bandadaApi.getGroup(attestationGroupID));
+};

package.json

@@ -10,11 +10,14 @@
     "lint:fix": "eslint . --ext .js,.jsx,.ts,.tsx --fix"
   },
   "dependencies": {
+    "@bandada/api-sdk": "^2.4.2",
     "@emotion/react": "^11.13.3",
     "@emotion/styled": "^11.13.0",
     "@ethereum-attestation-service/eas-sdk": "^2.7.0",
     "@farcaster/auth-kit": "^0.6.0",
     "@mui/material": "^6.1.3",
+    "@semaphore-protocol/group": "^4.5.0",
+    "@semaphore-protocol/identity": "^4.5.0",
     "@smastrom/react-rating": "^1.5.0",
     "@stylistic/eslint-plugin": "^2.7.2",
     "@tanstack/react-query": "^5.54.1",