> ## Documentation Index
> Fetch the complete documentation index at: https://thrackle.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# ProtocolERC721Pricing

[Git Source](https://github.com/forte-service-company-ltd/forte-rules-engine/blob/6b9ac124d2cb0fe47a8b5c261a1dd458067f45ea/src/client/pricing/ProtocolERC721Pricing.sol)

**Inherits:**
Ownable, [IApplicationEvents](/v1/reference/common/IEvents.sol/interface.IApplicationEvents), [IProtocolERC721Pricing](/v1/reference/common/IProtocolERC721Pricing.sol/interface.IProtocolERC721Pricing)

**Author:**
@ShaneDuncan602, @oscarsernarosero, @TJ-Everett

This contract is a simple pricing mechanism only. Its main purpose is to store prices.

*This contract allows for setting prices on entire collections or by tokenId*

## State Variables

### VERSION

```solidity
string private constant VERSION = "1";
```

### nftPrice

```solidity
mapping(address => mapping(uint256 => uint256)) public nftPrice;
```

### collectionPrice

```solidity
mapping(address => uint256) public collectionPrice;
```

## Functions

### setSingleNFTPrice

*set the price for a single NFT from a collection*

```solidity
function setSingleNFTPrice(address nftContract, uint256 id, uint256 price) external onlyOwner;
```

**Parameters**

| Name          | Type      | Description                                                                                                                                                     |
| ------------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `nftContract` | `address` | is the address of the NFT contract                                                                                                                              |
| `id`          | `uint256` | of the NFT                                                                                                                                                      |
| `price`       | `uint256` | price of the Token in weis of dollars. 10^18 => \$ 1.00 USD 999\_999\_999\_999\_999\_999 = 0xDE0B6B3A763FFFF, 1\_000\_000\_000\_000\_000\_000 = DE0B6B3A7640000 |

### setNFTCollectionPrice

*set the price for whole collection. If an NFT has a price
specific for it, the collection price would have the second priority.*

```solidity
function setNFTCollectionPrice(address nftContract, uint256 price) external onlyOwner;
```

**Parameters**

| Name          | Type      | Description                                                                                                                                                     |
| ------------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `nftContract` | `address` | is the address of the NFT contract                                                                                                                              |
| `price`       | `uint256` | price of the Token in weis of dollars. 10^18 => \$ 1.00 USD 999\_999\_999\_999\_999\_999 = 0xDE0B6B3A763FFFF, 1\_000\_000\_000\_000\_000\_000 = DE0B6B3A7640000 |

### getNFTPrice

*gets the price of an NFT. It will return the NFT's specific price, or the
price of the collection if no specific price has been given*

```solidity
function getNFTPrice(address nftContract, uint256 id) external view returns (uint256 price);
```

**Parameters**

| Name          | Type      | Description                        |
| ------------- | --------- | ---------------------------------- |
| `nftContract` | `address` | is the address of the NFT contract |
| `id`          | `uint256` | of the NFT                         |

**Returns**

| Name    | Type      | Description                                                                                                                                               |
| ------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `price` | `uint256` | of the Token in weis of dollars. 10^18 => \$ 1.00 USD 999\_999\_999\_999\_999\_999 = 0xDE0B6B3A763FFFF, 1\_000\_000\_000\_000\_000\_000 = DE0B6B3A7640000 |

### getNFTCollectionPrice

*gets the price of an NFT Collection. It will return the NFT Collection price to be used for each token Id (i.e. Floor Price).*

```solidity
function getNFTCollectionPrice(address nftContract) external view returns (uint256 price);
```

**Parameters**

| Name          | Type      | Description                        |
| ------------- | --------- | ---------------------------------- |
| `nftContract` | `address` | is the address of the NFT contract |

**Returns**

| Name    | Type      | Description                                                                                                                                                     |
| ------- | --------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `price` | `uint256` | for the collection in weis of dollars. 10^18 => \$ 1.00 USD 999\_999\_999\_999\_999\_999 = 0xDE0B6B3A763FFFF, 1\_000\_000\_000\_000\_000\_000 = DE0B6B3A7640000 |

### version

*gets the version of the contract*

```solidity
function version() external pure returns (string memory);
```

**Returns**

| Name     | Type     | Description |
| -------- | -------- | ----------- |
| `<none>` | `string` | VERSION     |