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151 lines
4.8 KiB
Solidity

//SPDX-License-Identifier: Unlicense
pragma solidity ^0.8.0;
// import "hardhat/console.sol";
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import "./Git3HubStorage.sol";
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contract Git3Hub_SLI is Git3HubStorage_SLI {
event RepoCreated(bytes repoName, address owner);
event RepoOwnerTransfer(bytes repoName, address oldOwner, address newOwner);
event PushRef(bytes repoName, bytes ref);
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constructor() Git3HubStorage_SLI() {}
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modifier onlyOwner(bytes memory repoName) {
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require(repoNameToOwner[repoName] == msg.sender, "only owner");
_;
}
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function createRepo(bytes memory repoName) external {
require(
repoName.length > 0 && repoName.length <= 100,
"RepoName length must be 1-100"
);
for (uint i; i < repoName.length; i++) {
bytes1 char = repoName[i];
require(
(char >= 0x61 && char <= 0x7A) || //a-z
(char >= 0x41 && char <= 0x5A) || //A-Z
(char >= 0x30 && char <= 0x39) || //0-9
(char == 0x2D || char == 0x2E || char == 0x5F), //-._
"RepoName must be alphanumeric or -._"
);
}
require(
repoNameToOwner[repoName] == address(0),
"RepoName already exist"
);
repoNameToOwner[repoName] = msg.sender;
emit RepoCreated(repoName, msg.sender);
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}
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function transferOwnership(
bytes memory repoName,
address newOwner
) external onlyOwner(repoName) {
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require(newOwner != address(0), "newOwner must not be zero address");
repoNameToOwner[repoName] = newOwner;
emit RepoOwnerTransfer(repoName, msg.sender, newOwner);
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}
function download(
bytes memory repoName,
bytes memory path
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) external view returns (bytes memory) {
return pathToHash[keccak256(bytes.concat(repoName, "/", path))];
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}
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function upload(
bytes memory repoName,
bytes memory path,
bytes calldata data
) external payable onlyOwner(repoName) {
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pathToHash[keccak256(bytes.concat(repoName, "/", path))] = data;
}
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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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pathToHash[keccak256(bytes.concat(repoName, "/", path))] = "";
}
function listRefs(
bytes memory repoName
) external view returns (refData[] memory list) {
list = new refData[](repoNameToRefs[repoName].length);
for (uint index = 0; index < repoNameToRefs[repoName].length; index++) {
list[index] = _convertRefInfo(
repoName,
nameToRefInfo[repoNameToRefs[repoName][index]]
);
}
}
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function setRef(
bytes memory repoName,
bytes memory ref,
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bytes20 refHash
) external onlyOwner(repoName) {
bytes memory fullName = bytes.concat(repoName, "/", ref);
// only execute `sload` once to reduce gas consumption
refInfo memory srs;
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srs = nameToRefInfo[fullName];
uint256 refsLen = repoNameToRefs[repoName].length;
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if (srs.hash == bytes20(0)) {
// store refHash for the first time
require(
refsLen <= uint256(uint96(int96(-1))),
"Refs exceed valid length"
);
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nameToRefInfo[fullName].hash = refHash;
nameToRefInfo[fullName].index = uint96(refsLen);
repoNameToRefs[repoName].push(fullName);
} else {
// only update refHash
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nameToRefInfo[fullName].hash = refHash;
}
emit PushRef(repoName, ref);
}
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function delRef(
bytes memory repoName,
bytes memory ref
) external onlyOwner(repoName) {
bytes memory fullName = bytes.concat(repoName, "/", ref);
// only execute `sload` once to reduce gas consumption
refInfo memory srs;
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srs = nameToRefInfo[fullName];
uint256 refsLen = repoNameToRefs[repoName].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) {
repoNameToRefs[repoName][srs.index] = repoNameToRefs[repoName][
refsLen - 1
];
nameToRefInfo[repoNameToRefs[repoName][refsLen - 1]].index = srs
.index;
}
repoNameToRefs[repoName].pop();
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delete nameToRefInfo[fullName];
}
function _convertRefInfo(
bytes memory repoName,
refInfo memory info
) internal view returns (refData memory res) {
res.hash = info.hash;
res.name = repoNameToRefs[repoName][info.index];
}
}