87 lines
12 KiB
Solidity
87 lines
12 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity >=0.4.22 <0.9.0;
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import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
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import "@openzeppelin/contracts/utils/Counters.sol";
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import "@openzeppelin/contracts/utils/Base64.sol";
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import "@openzeppelin/contracts/utils/Strings.sol";
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import "@openzeppelin/contracts/access/Ownable.sol";
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contract SoulboundToken is ERC721, Ownable {
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using Counters for Counters.Counter;
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Counters.Counter private _tokenIds;
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mapping(address => bool) isReliableBank;
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event Borrow(address client, address bank, uint id, uint amount);
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event Repay(address client, address bank, uint id, uint amount, bool finish);
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event Warning(address client, address bank);
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constructor() ERC721("Credit System Soulbound Token", "CS_SBT") {}
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function mint(address player) public onlyOwner returns (uint256) {
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_tokenIds.increment();
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uint256 newItemId = _tokenIds.current();
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_mint(player, newItemId);
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return newItemId;
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}
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function _beforeTokenTransfer(address from, address to, uint256 firstTokenId, uint256 batchSize) internal virtual override {
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require(from == address(0) || to == address(0), "SOULBOUND: Non-Transferable.");
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require(balanceOf(to)==0, "SOULBOUND: Everyone should only have 1 SBT.");
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super._beforeTokenTransfer(from, to, firstTokenId, batchSize);
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}
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function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
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_requireMinted(tokenId);
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string memory json = Base64.encode(
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bytes(
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string(
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abi.encodePacked(
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'{"name": "Credit System Soulbound Token (CS_SBT) #',
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Strings.toString(tokenId),
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'",',
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'"image_data": "',
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getSvgImage(tokenId),
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'"',
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"}"
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)
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)
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)
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);
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return string(abi.encodePacked("data:application/json;base64,", json));
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}
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function getSvgImage(uint uid) private pure returns (string memory){
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string memory uid_str = Strings.toString(uid);
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string memory a = "<svg id='eY2GjP7k5St1' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' viewBox='0 0 511.999 511.999' shape-rendering='geometricPrecision' text-rendering='geometricPrecision' width='511.999' height='511.999'><path d='M460.803,446.739h-409.606C22.967,446.739,0,423.772,0,395.542v-279.085C0,88.227,22.967,65.26,51.197,65.26h409.605c28.23,0,51.197,22.967,51.197,51.197v279.084c.001,28.231-22.966,51.198-51.196,51.198Z' fill='#39a3db'/><path d='M460.803,65.26h-204.804v381.479h204.802c28.23,0,51.197-22.967,51.197-51.197v-279.085C512,88.227,489.033,65.26,460.803,65.26Z' fill='#3797d3'/><path d='M237.413,381.144h-156.122c-10.264,0-18.586-8.322-18.586-18.586v-213.119c0-10.264,8.322-18.586,18.586-18.586h156.122c10.264,0,18.586,8.322,18.586,18.586v213.119c0,10.266-8.32,18.586-18.586,18.586Z' fill='#80d0e1'/><g><circle r='27.204' transform='translate(159.356 237.355)' fill='#e8f2fb'/><path d='M160.414,285.559c-40.261,0-73.306,30.9-76.71,70.279-.312,3.614,2.556,6.721,6.184,6.721h141.053c3.628,0,6.496-3.106,6.184-6.721-3.405-39.378-36.449-70.279-76.711-70.279Z' fill='#e8f2fb'/></g><path d='M439.004,234.586h-147.18c-10.264,0-18.586-8.322-18.586-18.586v-66.561c0-10.264,8.322-18.586,18.586-18.586h147.18c10.264,0,18.586,8.322,18.586,18.586v66.561c0,10.265-8.321,18.586-18.586,18.586Z' transform='matrix(1.06575 0 0 1.15416-23.142833-14.750278)' fill='#51b3da'/><path d='M439.004,284.497h-147.18c-10.264,0-18.586-8.322-18.586-18.586s8.322-18.586,18.586-18.586h147.18c10.264,0,18.586,8.322,18.586,18.586c0,10.266-8.321,18.586-18.586,18.586Z' transform='matrix(1.075331 0 0 1.526395-25.760726-81.826221)' fill='#51b3da'/><text dx='0' dy='0' font-family='"eY2GjP7k5St1:::Source Sans Pro"' font-size='25.59995' font-weight='700' transform='translate(270.606978 180.04155)' fill='#fff' stroke-width='0'><tspan y='0' font-weight='700' stroke-width='0'><![CDATA[Credit System]]></tspan><tspan x='0' y='25.59995' font-weight='700' stroke-width='0'><![CDATA[ Soulbound Token]]></tspan><tspan x='0' y='51.1999' font-weight='700' stroke-width='0'><![CDATA[ (CSSBT)]]></tspan></text><text dx='0' dy='0' font-family='"eY2GjP7k5St1:::Source Sans Pro"' font-size='25.59995' font-weight='700' transform='translate(295.693679 332.445094)' fill='#fff' stroke-width='0'><tspan y='0' font-weight='700' stroke-width='0'><![CDATA[#";
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string memory b = "]]></tspan></text><style><![CDATA[@font-face {font-family: 'eY2GjP7k5St1:::Source Sans Pro';font-style: normal;font-weight: 700;src: 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) format('truetype');}]]></style></svg>";
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return string(abi.encodePacked(a, uid_str, b));
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}
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modifier onlyBank {
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require(isReliableBank[msg.sender] == true, "Only bank can access this function");
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_;
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}
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function addReliableBank(address bank) public onlyOwner {
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isReliableBank[bank] = true;
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}
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function removeReliableBank(address bank) public onlyOwner {
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isReliableBank[bank] = false;
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}
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function logBorrowing(address client, uint id, uint amount) public onlyBank {
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emit Borrow(client, msg.sender, id, amount);
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}
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function logRepaying(address client, uint id, uint amount, bool finish) public onlyBank {
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emit Repay(client, msg.sender, id, amount, finish);
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}
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function logWarning(address client) public onlyBank {
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emit Warning(client, msg.sender);
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}
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} |