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RoyaltyStream.sol
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RoyaltyStream.sol
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// SPDX-License-Identifier: MIT
// @notice Simple stream for royalty payments made in ETH, which need to be split among multiple stakeholders.
pragma solidity ^0.8.10;
contract RoyaltyStream {
uint16 public totalAccounts;
uint256 public totalRoyalties;
mapping(uint16 => Account) public accounts;
struct Account {
address wallet;
uint8 percentage;
uint256 royalties;
uint256 withdrawn;
}
constructor(address[] memory wallets, uint8[] memory percentages) {
require(wallets.length == percentages.length, "NO_ARRAY_PARITY");
uint8 sum = 0;
for(uint i=0; i < percentages.length; i++) {
sum += percentages[i];
}
require(sum == 100, "INVALID_ROYALTY_DISTRIBUTION");
for(uint16 i=0; i < percentages.length; i++) {
Account memory account = Account({
wallet: wallets[i],
percentage: percentages[i],
royalties: 0,
withdrawn: 0
});
accounts[i] = account;
}
totalAccounts = uint16(wallets.length);
}
fallback () external payable {
this.deposit();
}
receive() external payable {
this.deposit();
}
function deposit() external payable {
totalRoyalties += msg.value;
for(uint16 i=0; i < totalAccounts; i++) {
uint256 royalty = (accounts[i].percentage * msg.value) / 100;
accounts[i].royalties += royalty;
}
}
function withdraw(uint16 account, uint256 amount) external {
require(accounts[account].wallet == msg.sender, "NOT_AUTHORIZED");
require(accounts[account].royalties - accounts[account].withdrawn >= amount, "INSUFFICENT_BALANCE");
accounts[account].withdrawn += amount;
payable(msg.sender).transfer(amount);
}
// *** VIEW FUNCTIONS FOR STRUCT *** //
function viewAccountAddress(uint16 account) external view returns(address) {
return(accounts[account].wallet);
}
function viewTotalRoyalties(uint16 account) external view returns(uint256) {
return(accounts[account].royalties);
}
function viewWithdrawnRoyalties(uint16 account) external view returns(uint256) {
return(accounts[account].withdrawn);
}
function viewBalance(uint16 account) external view returns(uint256) {
return(accounts[account].royalties - accounts[account].withdrawn);
}
}