---
id: group
title: 'Group'
---

import ApiTypes from '../../src/components/snippers/api-types.tsx';
import Tx from '../../src/components/snippers/tx.mdx';
import Tabs from '@theme/Tabs';
import TabItem from '@theme/TabItem';

## createGroup <ApiTypes type="Tx" />

Create a new group without group members on Greenfield blockchain, and group members can be added by
[updateGroupMember](#updategroupmember) transaction.

A `Group` is a collection of accounts that share the same permissions, allowing them to be handled
as a single entity.

Examples of permissions include:

- `Put`, `List`, `Get`, `Delete`, `Copy`, and `Execute` data objects;
- `Create`, `Delete`, and `List` buckets
- `Create`, `Delete`, `ListMembers`, `Leave groups`
- `Create`, `Associate payment accounts`
- `Grant`, `Revoke` the above permissions

For more details regarding `Group`, please refer to
https://docs.bnbchain.org/greenfield-docs/docs/guide/greenfield-blockchain/modules/permission.

| params    | description                                             |
| --------- | ------------------------------------------------------- |
| creator   | the account address of group owner who create the group |
| groupName | the name of the group. it's not globally unique         |
| extra     | extra info for the group                                |

```jsx title="example"
const tx = await client.group.createGroup({
  creator: '0x00..',
  groupName: 'group_name',
  extra: 'extra_info',
});
```

<Tx />

## deleteGroup <ApiTypes type="Tx" />

Delete a group on Greenfield blockchain. The sender **MUST** only be the group owner, group members
or others would fail to send this transaction.

:::warning

Deleting a group will result in granted permission revoked. Members within the group will no longer
have access to resources (bucket, object) which granted permission on.

:::

| params    | description                                                                                       |
| --------- | ------------------------------------------------------------------------------------------------- |
| operator  | the account address of the operator who has the DeleteGroup permission of the group to be deleted |
| groupName | the name of the group which to be deleted                                                         |

```jsx title="example"
const tx = await client.group.deleteGroup({
  groupName: 'group_name',
  operator: '0x00..',
});
```

<Tx />

## getBucketPolicyOfGroup <ApiTypes type="Query" />

Queries a bucket of policy that grants permission to a group.

| params     | description |
| ---------- | ----------- |
| bucketName | bucket name |
| groupId    | group id    |

```jsx title="example"
await client.group.getBucketPolicyOfGroup('bucket_name', 1);
```

## getObjectPolicyOfGroup <ApiTypes type="Query" />

Queries a object of policy that grants permission to a group.

| params     | description |
| ---------- | ----------- |
| bucketName | bucket name |
| objectName | object name |
| groupId    | group id    |

```jsx title="example"
await client.group.getObjectPolicyOfGroup('bucket_name', 'object_name', 1);
```

<!-- ## getPolicyOfGroup <ApiTypes type="Query" />

Queries a group of policy that grants permission to a group. -->

## headGroup <ApiTypes type="Query" />

Query the groupInfo on chain, return the group info if exists.

| params     | description    |
| ---------- | -------------- |
| groupName  | group name     |
| groupOwner | owner of group |

```jsx title="example"
await client.group.headGroup('group_name', '0x00..');
```

## headGroupMember <ApiTypes type="Query" />

Query the group member info on chain, return true if the member exists in group.

| params     | description     |
| ---------- | --------------- |
| groupName  | group name      |
| groupOwner | owner of group  |
| member     | member of group |

```jsx title="example"
await client.group.headGroupMember(
  'groupName',
  '0x00..',
  '0x903904936a4328fac5477c0d96acf2E2bCaCD33d',
);
```

<!-- ## headGroupNFT <ApiTypes type="Query" />

Queries a group with EIP712 standard metadata info.



```jsx title="example"
await client.group.headGroupNFT({
  tokenId: '11';
});
``` -->

## leaveGroup <ApiTypes type="Tx" />

Leave a group. A group member initially leaves a group.

| params     | description                                                   |
| ---------- | ------------------------------------------------------------- |
| address    | operator address                                              |
| member     | the account address of the member who want to leave the group |
| groupOwner | the owner of the group you want to leave                      |
| groupName  | the name of the group you want to leave                       |

```jsx title="example"
await client.group.leaveGroup(
  '0x...', // address
  {
    member: '0x...',
    groupOwner: '0x...',
    groupName: 'group_name',
  },
);
```

<Tx />

## putGroupPolicy <ApiTypes type="Tx" />

Apply group policy to user specified by principalAddr, the sender needs to be the owner of the
group.

| params    | description    |
| --------- | -------------- |
| owner     | owner of group |
| groupName | name of group  |

<!-- staments -->

```tsx title="example"
import { PermissionTypes } from '@bnb-chain/greenfield-js-sdk';
const statement: PermissionTypes.Statement = {
  effect: PermissionTypes.Effect.EFFECT_ALLOW,
  actions: [PermissionTypes.ActionType.ACTION_UPDATE_GROUP_MEMBER],
  resources: [],
};

await client.group.putGroupPolicy(
  '0x...', // owner
  'group_name',
  {
    operator: '0x...', // address
    statements: [statement],
    principal: {
      type: PermissionTypes.PrincipalType.PRINCIPAL_TYPE_GNFD_ACCOUNT,
      value: '0x0000000000000000000000000000000000000001',
    },
  },
);
```

<Tx />

## updateGroupExtra <ApiTypes type="Tx" />

Update a group extra.

| params     | description                                                                               |
| ---------- | ----------------------------------------------------------------------------------------- |
| operator   | the account address of the operator who has the UpdateGroupMember permission of the group |
| groupOwner | the account address of the group owner                                                    |
| groupName  | the name of the group which to be updated                                                 |
| extra      | extra info for the group to update                                                        |

```jsx title="example"
await client.group.updateGroupExtra({
  operator: '0x...',
  groupOwner: '0x...',
  groupName: 'group_name',
  extra: 'extra info',
});
```

<Tx />

## updateGroupMember <ApiTypes type="Tx" />

Update a group by adding or removing members. The sender can be the group owner or any individual
account(Principle) that has been granted permission by the group owner.

| params          | description                                                                               |
| --------------- | ----------------------------------------------------------------------------------------- |
| operator        | the account address of the operator who has the UpdateGroupMember permission of the group |
| groupOwner      | the account address of the group owner                                                    |
| groupName       | the name of the group which to be updated                                                 |
| membersToAdd    | MsgGroupMember[]                                                                          |
| membersToDelete | string[]                                                                                  |

<Tabs>
<TabItem value="add" label="add members">

```jsx title="example"
await client.group.updateGroupMember({
  operator: '0x..',
  groupOwner: '0x..',
  groupName: 'group_name',
  membersToAdd: [
    {
      expirationTime: toTimestamp(date),
      member: '0x903904936a4328fac5477c0d96acf2E2bCaCD33d',
    },
  ],
  membersToDelete: [],
});
```

</TabItem>
<TabItem value="del" label="delete members">

```jsx title="example"
await client.group.updateGroupMember({
  operator: '0x..',
  groupOwner: '0x..',
  groupName: 'group_name',
  membersToAdd: [],
  membersToDelete: ['0x903904936a4328fac5477c0d96acf2E2bCaCD33d'],
});
```

</TabItem>
</Tabs>

<Tx />