fundings.sol

//SPDX-License-Identifier: MIT

pragma solidity ^0.8.9;

contract CrowdFunding {
    struct Campaign {
        address owner;
        string title;
        string description;
        uint256 targetAmount;
        uint256 deadline;
        uint256 amountCollected;
        string image;
        address[] donaters;
        uint256[] donations;
    }

    mapping(uint256 => Campaign) public campaigns;
    uint256 public numberOfCampaigns = 0;

    function createCampaigns(
        address _owner,
        string memory _title,
        string memory _description,
        uint256 _targetAmount,
        uint256 _deadline,
        string memory _image
    ) public returns (uint256) {
        Campaign storage campaign = campaigns[numberOfCampaigns];

        // is everythings is okay
        require(campaign.deadline < block.timestamp, "deadline reached :(");
        campaign.owner = _owner;
        campaign.title = _title;
        campaign.description = _description;
        campaign.targetAmount = _targetAmount;
        campaign.deadline = _deadline;
        campaign.amountCollected = 0;
        campaign.image = _image;

        numberOfCampaigns++;

        return numberOfCampaigns;
    }

    function donateToCampaign(uint256 _id) public payable {
        uint256 amount = msg.value;

        Campaign storage campaign = campaigns[_id];

        campaign.donaters.push(msg.sender);
        campaign.donations.push(amount);

        (bool sent, ) = payable(campaign.owner).call{value: amount}("");

        if (sent) {
            campaign.amountCollected = campaign.amountCollected + amount;
        }
    }

    function getDonators(uint256 _id)
        public
        view
        returns (address[] memory, uint256[] memory)
    {
        return (campaigns[_id].donaters, campaigns[_id].donations);
    }

    function getCampaigns() public view returns (Campaign[] memory) {
        // making an array of struct with lenght of number of campaign
        Campaign[] memory allCampaigns = new Campaign[](numberOfCampaigns);

        for (uint256 i = 0; i < numberOfCampaigns; i++) {
            Campaign storage item = campaigns[i];

            allCampaigns[i] = item;
        }

        return allCampaigns;
    }
}