# AutoDeleveraging

## AutoDeleveraging encode

| Name            | Rule                                                                                                                                                                                                                    |
| --------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| type            | 1byte with the value `0x0b`                                                                                                                                                                                             |
| accountId       | 4 bytes                                                                                                                                                                                                                 |
| subAccountId    | 1 byte                                                                                                                                                                                                                  |
| subAccountNonce | 4 bytes                                                                                                                                                                                                                 |
| oraclePrices    | 31 bytes, encode the `ContractPrice` and `MarginPrice` in order, pass the bytes to Rust SDK `rescue_hash` method                                                                                                        |
| adlAccountId    | 4 bytes                                                                                                                                                                                                                 |
| pairId          | 1 byte                                                                                                                                                                                                                  |
| adlSize         | 5 bytes, refer to `amount` pack method in [BigUint pack algorithm](https://github.com/zkLinkProtocol/zklink-docs-gitbook/blob/main/developer/api-and-sdk/private-key-and-signature/algorithm.md#biguint-pack-algorithm) |
| adlPrice        | 15 bytes, encode to big endian bytes, then pass to the`pad_front` function in Rust SDK                                                                                                                                  |
| fee             | 2 bytes, refer to `fee` pack method in [BigUint pack algorithm](https://github.com/zkLinkProtocol/zklink-docs-gitbook/blob/main/developer/api-and-sdk/private-key-and-signature/algorithm.md#biguint-pack-algorithm)    |
| feeToken        | 2 bytes                                                                                                                                                                                                                 |

## ContractPrice encode

| Name        | Rule                                                                              |
| ----------- | --------------------------------------------------------------------------------- |
| pariId      | 1 byte                                                                            |
| marketPrice | 15 bytes, encode in big endian, then pass to the `pad_front` function in Rsut SDK |

## MarginPrice encode

| Name        | Rule                                                                             |
| ----------- | -------------------------------------------------------------------------------- |
| tokenId     | 2 byte, change to `u16`, then encode in big endian                               |
| marketPrice | 15 bytes, encode in big endian, then pass to the`pad_front` function in Rust SDK |

### Example

For the auto deleveraging as below:

```json
{
  "type": "AutoDeleveraging",
  "accountId": 1,
  "subAccountId": 1,
  "subAccountNonce": 2,
  "oraclePrices": {
    "contractPrices": [
      {
        "pairId": 1,
        "marketPrice": "100"
      }
    ],
    "marginPrices": [
      {
        "tokenId": 2,
        "price": "200"
      }
    ]
  },
  "adlAccountId": 2,
  "pairId": 4,
  "adlSize": "10",
  "adlPrice": "200",
  "fee": "120",
  "feeToken": 4,
  "signature": {
    "pubKey": "0x43cbec0bf142a942df9db99d27bd4ceeb8f4e75f9444b4cee4e3170965854404",
    "signature": "366e759d61a5052073e13147ed3e8e1642dfea10cd423bbb9a795932a15a4c122fa5e71c35a7d59198fa2d7ed28bb1f44e5c5392049607347855243ddc027d00"
  }
}
encode_bytes = [11, 0, 0, 0, 1, 1, 0, 0, 0, 2, 2, 43, 79, 252, 219, 58, 192, 163, 157, 224, 84, 133, 108, 165, 194, 196, 21, 224, 35, 204, 189, 183, 18, 177, 165, 127, 136, 194, 46, 70, 172, 0, 0, 0, 2, 4, 0, 0, 0, 1, 64, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 200, 0, 4, 15, 0]
```


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