import "@thirdweb-dev/contracts/extension/DropSinglePhase.sol";

The DropSinglePhase smart contract is an extension meant for distributing ERC20 or ERC721 tokens.

This extension implements the 'Drop' distribution mechanism: set restrictions, known as a claim phase, such as a price to charge, an allowlist etc. for the public / allowlisted mint of your tokens.

DropSinglePhase allows you to set one claim phase unlike the Drop extension.

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The DropSinglePhase extension is an abstract contract, and expects you to implement the following functions by yourself:

This is an example smart contract demonstrating how to inherit from this extension and override the functions to add (optional) custom functionality.

// SPDX-License-Identifier: Apache-2.0
pragma solidity ^0.8.0;
import "@thirdweb-dev/contracts/extension/DropSinglePhase.sol";
import "@thirdweb-dev/contracts/base/ERC20Base.sol";
import "@thirdweb-dev/contracts/lib/CurrencyTransferLib.sol";
/// This is an EXAMPLE of the usage of `DropSinglePhase` for distributing ERC20 tokens.
contract MyContract is ERC20Base, DropSinglePhase {
    /*//////////////////////////////////////////////////////////////
                            Constructor
    //////////////////////////////////////////////////////////////*/
    constructor(address _defaultAdmin, string memory _name, string memory _symbol)
        ERC20Base(_defaultAdmin, _name, _symbol)
    {}
    /*//////////////////////////////////////////////////////////////
                        Internal (overrideable) functions
    //////////////////////////////////////////////////////////////*/
    /// @dev Runs before every `claim` function call.
    function _beforeClaim(
        uint256 _tokenId,
        address _receiver,
        uint256 _quantity,
        address _currency,
        uint256 _pricePerToken,
        AllowlistProof calldata _allowlistProof,
        bytes memory _data
    ) internal virtual override {
      // Your custom implementation logic here
    }
    /// @dev Runs after every `claim` function call.
    function _afterClaim(
        uint256 _tokenId,
        address _receiver,
        uint256 _quantity,
        address _currency,
        uint256 _pricePerToken,
        AllowlistProof calldata _allowlistProof,
        bytes memory _data
    ) internal virtual override {
      // Your custom implementation logic here
    }
    /// @dev Collects and distributes the primary sale value of tokens being claimed.
    function _collectPriceOnClaim(
        address _primarySaleRecipient,
        uint256 _quantityToClaim,
        address _currency,
        uint256 _pricePerToken
    ) internal virtual override {
        if (_pricePerToken == 0) {
            return;
        }
        uint256 totalPrice = (_quantityToClaim * _pricePerToken) / 1 ether;
        require(totalPrice > 0, "quantity too low");
        if (_currency == CurrencyTransferLib.NATIVE_TOKEN) {
            require(msg.value == totalPrice, "Must send total price.");
        }
        address saleRecipient = _primarySaleRecipient;
        CurrencyTransferLib.transferCurrency(
            _currency,
            msg.sender,
            saleRecipient,
            totalPrice
        );
    }
    /// @dev Transfers the tokens being claimed.
    function _transferTokensOnClaim(address _to, uint256 _quantityBeingClaimed)
        internal
        virtual
        override
        returns (uint256)
    {
        _mint(_to, _quantityBeingClaimed);
        return 0;
    }
    /// @dev Checks whether platform fee info can be set in the given execution context.
    function _canSetClaimConditions()
        internal
        view
        virtual
        override
        returns (bool)
    {
        return msg.sender == owner();
    }
}

• ERC721Drop
• ERC20Drop