Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- cityHealth
- Optimization enabled
- true
- Compiler version
- v0.8.0+commit.c7dfd78e
- Optimization runs
- 200
- EVM Version
- default
- Verified at
- 2024-09-12T09:32:23.486374Z
Contract source code
pragma solidity ^0.8.0;
contract cityHealth {
struct Project {
string name;
uint256 carbonCredits;
bool active;
address owner;
}
struct CreditTransaction {
uint256 amount;
address from;
address to;
uint256 timestamp;
}
address public cityAdmin;
mapping(uint256 => Project) public projects;
mapping(address => uint256) public carbonCreditsBalance;
mapping(uint256 => CreditTransaction[]) public projectTransactions;
uint256 public projectCount;
uint256 public totalCarbonCredits;
event ProjectRegistered(uint256 indexed projectId, string name, address owner);
event CarbonCreditsIssued(uint256 indexed projectId, uint256 amount);
event CarbonCreditsTransferred(address indexed from, address indexed to, uint256 amount);
event ProjectStatusChanged(uint256 indexed projectId, bool active);
modifier onlyCityAdmin() {
require(msg.sender == cityAdmin, "Only city admin can call this function");
_;
}
modifier onlyProjectOwner(uint256 _projectId) {
require(msg.sender == projects[_projectId].owner, "Only project owner can call this function");
_;
}
constructor() {
cityAdmin = msg.sender;
}
function registerProject(string memory _name, address _owner) public onlyCityAdmin {
projectCount++;
projects[projectCount] = Project(_name, 0, true, _owner);
emit ProjectRegistered(projectCount, _name, _owner);
}
function issueCarbonCredits(uint256 _projectId, uint256 _amount) public onlyCityAdmin {
require(projects[_projectId].active, "Project is not active");
projects[_projectId].carbonCredits += _amount;
carbonCreditsBalance[projects[_projectId].owner] += _amount;
totalCarbonCredits += _amount;
projectTransactions[_projectId].push(CreditTransaction(_amount, address(0), projects[_projectId].owner, block.timestamp));
emit CarbonCreditsIssued(_projectId, _amount);
}
function transferCarbonCredits(address _to, uint256 _amount) public {
require(carbonCreditsBalance[msg.sender] >= _amount, "Insufficient carbon credits");
carbonCreditsBalance[msg.sender] -= _amount;
carbonCreditsBalance[_to] += _amount;
emit CarbonCreditsTransferred(msg.sender, _to, _amount);
}
function changeProjectStatus(uint256 _projectId, bool _active) public onlyCityAdmin {
projects[_projectId].active = _active;
emit ProjectStatusChanged(_projectId, _active);
}
function getProjectDetails(uint256 _projectId) public view returns (string memory, uint256, bool, address) {
Project memory project = projects[_projectId];
return (project.name, project.carbonCredits, project.active, project.owner);
}
function getProjectTransactions(uint256 _projectId) public view returns (CreditTransaction[] memory) {
return projectTransactions[_projectId];
}
function getCarbonCreditsBalance(address _address) public view returns (uint256) {
return carbonCreditsBalance[_address];
}
function getTotalCarbonCredits() public view returns (uint256) {
return totalCarbonCredits;
}
function calculateCarbonOffset(uint256 _projectId) public view returns (uint256) {
// This is a placeholder function. In a real-world scenario, this would involve
// complex calculations based on project type, duration, and other factors.
return projects[_projectId].carbonCredits;
}
}
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","inputs":[]},{"type":"event","name":"CarbonCreditsIssued","inputs":[{"type":"uint256","name":"projectId","internalType":"uint256","indexed":true},{"type":"uint256","name":"amount","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"CarbonCreditsTransferred","inputs":[{"type":"address","name":"from","internalType":"address","indexed":true},{"type":"address","name":"to","internalType":"address","indexed":true},{"type":"uint256","name":"amount","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"ProjectRegistered","inputs":[{"type":"uint256","name":"projectId","internalType":"uint256","indexed":true},{"type":"string","name":"name","internalType":"string","indexed":false},{"type":"address","name":"owner","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"ProjectStatusChanged","inputs":[{"type":"uint256","name":"projectId","internalType":"uint256","indexed":true},{"type":"bool","name":"active","internalType":"bool","indexed":false}],"anonymous":false},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"calculateCarbonOffset","inputs":[{"type":"uint256","name":"_projectId","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"carbonCreditsBalance","inputs":[{"type":"address","name":"","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"changeProjectStatus","inputs":[{"type":"uint256","name":"_projectId","internalType":"uint256"},{"type":"bool","name":"_active","internalType":"bool"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"cityAdmin","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"getCarbonCreditsBalance","inputs":[{"type":"address","name":"_address","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"string","name":"","internalType":"string"},{"type":"uint256","name":"","internalType":"uint256"},{"type":"bool","name":"","internalType":"bool"},{"type":"address","name":"","internalType":"address"}],"name":"getProjectDetails","inputs":[{"type":"uint256","name":"_projectId","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"tuple[]","name":"","internalType":"struct cityHealth.CreditTransaction[]","components":[{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"address","name":"from","internalType":"address"},{"type":"address","name":"to","internalType":"address"},{"type":"uint256","name":"timestamp","internalType":"uint256"}]}],"name":"getProjectTransactions","inputs":[{"type":"uint256","name":"_projectId","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"getTotalCarbonCredits","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"issueCarbonCredits","inputs":[{"type":"uint256","name":"_projectId","internalType":"uint256"},{"type":"uint256","name":"_amount","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"projectCount","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"amount","internalType":"uint256"},{"type":"address","name":"from","internalType":"address"},{"type":"address","name":"to","internalType":"address"},{"type":"uint256","name":"timestamp","internalType":"uint256"}],"name":"projectTransactions","inputs":[{"type":"uint256","name":"","internalType":"uint256"},{"type":"uint256","name":"","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"string","name":"name","internalType":"string"},{"type":"uint256","name":"carbonCredits","internalType":"uint256"},{"type":"bool","name":"active","internalType":"bool"},{"type":"address","name":"owner","internalType":"address"}],"name":"projects","inputs":[{"type":"uint256","name":"","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"registerProject","inputs":[{"type":"string","name":"_name","internalType":"string"},{"type":"address","name":"_owner","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"","internalType":"uint256"}],"name":"totalCarbonCredits","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferCarbonCredits","inputs":[{"type":"address","name":"_to","internalType":"address"},{"type":"uint256","name":"_amount","internalType":"uint256"}]}]
Contract Creation Code
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