# Deposit Liquidity

This guide demonstrates how to perform a deposit into a liquidity pool using the Torch Finance SDK.

## Example: Depositing Assets into a Pool

### 1. Initialize SDK

First, import the required modules and initialize the Torch Finance SDK:

```typescript
import { TorchSDK, generateQueryId, DepositParams, toUnit } from '@torch-finance/sdk';
import { Asset } from '@torch-finance/core';

const sdk = new TorchSDK();
```

### 2. Define Deposit Parameters

Configure the parameters for depositing assets into a pool. For this example, we will

1. Deposit `0.1 TON`, `0.1 tsTON`, and `0.1 stTON` into a pool. 
2. Additionally, a subsequent `0.1 hTON` deposit into a MetaPool will be prepared.

```typescript
const queryId = await generateQueryId()

// Define assets
const TON_ASSET = Asset.ton();
const TSTON_ASSET = Asset.jetton("EQC98_qAmNEptUtPc7W6xdHh_ZHrBUFpw5Ft_IzNU20QAJav");
const STTON_ASSET = Asset.jetton("EQDNhy-nxYFgUqzfUzImBEP67JqsyMIcyk2S5_RwNNEYku0k");
const HTON_ASSET = Asset.jetton("EQDPdq8xjAhytYqfGSX8KcFWIReCufsB9Wdg0pLlYSO_h76w");

const LSDPoolAddress = "EQD_pool_address_example";
const MetaPoolAddress = "EQD_meta_pool_address_example";

// Define deposit parameters
const depositParams: DepositParams = {
    queryId,
    pool: BasePoolAddress,
    depositAmounts: [
      {
        asset: TSTON_ASSET,
        value: toUnit('0.0000001', 9), // 0.0000001 TSTON in TriTON pool
      },
      {
        asset: STTON_ASSET,
        value: toUnit('0.0000001', 9), // 0.0000001 STTON in TriTON pool
      },
      {
        asset: TON_ASSET,
        value: toUnit('0.0000001', 9), // 0.0000001 TON in TriTON pool
      },
    ],
    nextDeposit: {
      pool: MetaPoolAddress,
      depositAmounts: { asset: HTON_ASSET, value: toUnit('0.0000001', 9) }, // 0.0000001 HTON in Meta USD pool
    },
    slippageTolerance: 0.01, // 1%
  };

```

### 3. Preview the Deposit

Simulate the deposit to preview important details such as the LP token master address and the estimated LP token amount.

```typescript
// Simulate the deposit payload
const { result, getDepositPayload } = await sdk.simulateDeposit(depositParams);

console.log(`LP Tokens Out: ${result.lpTokenOut.toString()}`);
console.log(`LP Total Supply After: ${result.lpTotalSupplyAfter.toString()}`);
console.log(`Min LP Tokens Out: ${result.minLpTokenOut?.toString() || '(You did not specify slippage tolerance)'}`); // prettier-ignore

console.log(`Get ${lpTokenAmount} LP from ${lpTokenMaster}`);
```

**Example Output**

```sql
LP Tokens Out: 12345678901234567890
LP Total Supply After: 98765432109876543210
Min LP Tokens Out: 12000000000000000000
```

### 4. Execute the Deposit

Send the deposit transaction and retrieve the `msgHash` to track its status.

#### 4.1 Execute Swap with Simulation Result

```typescript
// Get BoC and send transaction
const sender = wallet.address;
const senderArgs = await sdk.getDepositPayload(sender, depositParams);

const msgHash = await send(senderArgs);
console.log(`Transaction sent with msghash: ${msgHash}`);
```

#### 4.2 Execute Swap Directly with Swap Params

```typescript
const sender = wallet.address;
const senderArgs = await sdk.getDepositPayload(sender, {
    blockNumber: blockNumber, // Optional, but it will speed up a lot if you provided the latest blockNumber here
  });
const msgHash = await send(senderArgs); 
console.log(`Transaction sent with msghash: ${msgHash}`)
```


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