CrowdFundingApp/FundMe.sol at main · CodeQueenTosin/CrowdFundingApp · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
// SPDX-License-Identifier: MIT

pragma solidity   0.8.18;

import "@chainlink/contracts/src/v0.8/interfaces/AggregatorV3Interface.sol";

contract FundMe {

uint256 public  minimumUsd =   5E18;

function  Fund()  public payable {

require(getConversionRate(msg.value) >= minimumUsd, "didnt send enough ETH");

}

function getPrice() public view returns (uint256) {

AggregatorV3Interface priceFeed = AggregatorV3Interface(0x694AA1769357215DE4FAC081bf1f309aDC325306);
        (, int256 price, , , ) = priceFeed.latestRoundData();
        return uint256(price * 1e10);
}


function getConversionRate(uint256 ethAmount) public view returns(uint256) {

   uint256 ethPrice = getPrice();
   uint256 ethAmountInUsd = (ethPrice * ethAmount)/ 1e18;
   return ethAmountInUsd;

}

function  getVersion() public  view returns (uint256){

return  AggregatorV3Interface(0x694AA1769357215DE4FAC081bf1f309aDC325306).version();

}


}