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137 lines
4.1 KiB
Solidity

//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;
import "hardhat/console.sol";
import "./IFileOperator.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "git3-evm-large-storage/contracts/LargeStorageManager.sol";
// import "evm-large-storage/contracts/W3RC3.sol";
contract Git3 is LargeStorageManager {
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struct refInfo {
bytes20 hash;
uint96 index;
}
struct refData {
bytes20 hash;
string name;
}
mapping(bytes => address) public repoNameToOwner;
mapping(string => refInfo) public nameToRefInfo; // dev => {hash: 0x1234..., index: 1 }
string[] public refs; // [main, dev, test, staging]
function _convertRefInfo(
refInfo memory info
) internal view returns (refData memory res) {
res.hash = info.hash;
res.name = refs[info.index];
}
constructor() LargeStorageManager(0) {}
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modifier onlyOwner(bytes memory repoName) {
require(repoNameToOwner[repoName] == msg.sender);
_;
}
function download(
bytes memory repoName,
bytes memory path
) external view returns (bytes memory, bool) {
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// call flat directory(FD)
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return _get(keccak256(bytes.concat(repoName, '/', path)));
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}
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function createRepo(bytes memory repoName)
external payable
{
require(repoNameToOwner[repoName] == address(0));
repoNameToOwner[repoName] = msg.sender;
}
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function upload(bytes memory repoName, bytes memory path, bytes calldata data)
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external payable onlyOwner(repoName)
{
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_putChunkFromCalldata(keccak256(bytes.concat(repoName, '/', path)), 0, data,msg.value);
}
function uploadChunk(
bytes memory repoName,
bytes memory path,
uint256 chunkId,
bytes calldata data
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) external payable onlyOwner(repoName) {
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_putChunkFromCalldata(keccak256(bytes.concat(repoName, '/', path)), chunkId, data,msg.value);
}
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function remove(bytes memory repoName, bytes memory path) external onlyOwner(repoName) {
// The actually process of remove will remove all the chunks
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_remove(keccak256(bytes.concat(repoName, '/', path)),0);
}
function size(bytes memory name) external view returns (uint256, uint256) {
return _size(keccak256(name));
}
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function countChunks(bytes memory name) external view returns (uint256) {
return _countChunks(keccak256(name));
}
function listRefs() public view returns (refData[] memory list) {
list = new refData[](refs.length);
for (uint index = 0; index < refs.length; index++) {
list[index] = _convertRefInfo(nameToRefInfo[refs[index]]);
}
}
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function setRef(bytes memory repoName, string memory name, bytes20 refHash) public onlyOwner(repoName) {
// only execute `sload` once to reduce gas consumption
refInfo memory srs;
srs = nameToRefInfo[name];
uint256 refsLen = refs.length;
if (srs.hash == bytes20(0)) {
// store refHash for the first time
require(
refsLen <= uint256(uint96(int96(-1))),
"Refs exceed valid length"
);
nameToRefInfo[name].hash = refHash;
nameToRefInfo[name].index = uint96(refsLen);
refs.push(name);
} else {
// only update refHash
nameToRefInfo[name].hash = refHash;
}
}
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function delRef(bytes memory repoName, string memory name) public onlyOwner(repoName) {
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// only execute `sload` once to reduce gas consumption
refInfo memory srs;
srs = nameToRefInfo[name];
uint256 refsLen = refs.length;
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require(
srs.hash != bytes20(0),
"Reference of this name does not exist"
);
require(srs.index < refsLen, "System Error: Invalid index");
if (srs.index < refsLen - 1) {
refs[srs.index] = refs[refsLen - 1];
nameToRefInfo[refs[refsLen - 1]].index = srs.index;
}
refs.pop();
delete nameToRefInfo[name];
}
}
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