# Mint

### Transaction Group

0\. Pay - pay fees in Algo from Pooler to Pool

* fees to cover Tx 1,4
* Signed by Pooler

```
{
  "txn": {
  "type": "pay",
  "rcv": "{POOL_ADDRESS}",
  "snd": "{POOLER_ADDRESS",
  "amt": 2000,
  "fee": 1000,
  ...
  },
  "sig": "{POOLER_SIG}",
}
```

1. App Call - NoOp call to Validator App with args \['mint'], with Pooler account
   * Signed by Pool LogicSig

```
{
  "txn": {
    "type": "appl",
    "snd": "{POOL_ADDRESS}",
    "apid": {VALIDATOR_APP_ID},
    "apan": 0, // OnComplete: NoOp
    "apaa": ['bWludA=='], // ['mint']
    "apas": [{ASSET1_ID}, {ASSET2_ID}, {LIQUIDITY_ASSET_ID}], // or just [{ASSET1_ID}, {LIQUIDITY_ASSET_ID}] if asset 2 is Algo
    "apat": [{POOLER_ADDRESS}],
    "fee": 1000,
    ...
  },
  "lsig": "{POOL_LOGICSIG}",
}
```

2\. AssetTransfer - Transfer of asset 1 from Pooler to Pool

* Signed by Pooler

```
{
  "txn": {
    "type": "axfer",
    "arcv": "{POOL_ADDRESS}",
    "snd": "{POOLER_ADDRESS}",
    "xaid": {ASSET_1_ID},
    "aamt": {ASSET_1_AMOUNT},
    "fee": 1000,
    ...
  },
  "sig": "{POOLER_SIG}",
}
```

3\. (a) AssetTransfer - Transfer of asset 2 from Pooler to Pool

* If asset 2 is an ASA
* Signed by Pooler

```
{
  "txn": {
    "type": "axfer",
    "arcv": "{POOL_ADDRESS}",
    "snd": "{POOLER_ADDRESS}",
    "xaid": {ASSET_2_ID},
    "aamt": {ASSET_2_AMOUNT},
    "fee": 1000,
    ...
  },
  "sig": "{POOLER_SIG}",
}
```

3\. (b) Pay - Transfer of Algo from Pooler to Pool

* If asset 2 is Algo
* Signed by Pooler

```
{
  "txn": {
    "type": "pay",
    "rcv": "{POOL_ADDRESS}",
    "snd": "{POOLER_ADDRESS}",
    "amt": {ASSET_2_AMOUNT},
    "fee": 1000,
    ...
  },
  "sig": "{POOLER_SIG}",
}
```

4\. AssetTransfer - Transfer of liquidity token asset from Pool to Pooler

* Signed by Pool LogicSig
* Amount is minimum expected amount of liquidity token allowing for slippage

```
{
  "txn": {
    "type": "axfer",
    "arcv": "{POOLER_ADDRESS}",
    "snd": "{POOL_ADDRESS}",
    "xaid": {LIQUIDITY_ASSET_ID},
    "aamt": {LIQUIDITY_ASSET_AMOUNT},
    "fee": 1000,
    ...
  },
  "lsig": "{POOL_LOGICSIG}",
}
```

### Validator App State Changes

**Global State**

None

**Pool Account Local State**

* `o{LIQUIDITY_ASSET_ID}: {int}` // total outstanding unredeemed liquidity asset amount

**Pooler Account Local State**

* `{POOL_ADDRESS}e{LIQUIDITY_ASSET_ID}: {int}` // excess liquidity asset amount available for redemption


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