// Contract: Factory
// Target function: function flush(uint64[] memory _ids) public
/**
 *Submitted for verification at Etherscan.io on 2022-11-13
*/

// SPDX-License-Identifier: None
pragma solidity ^0.8.14;

// @openzepplin/contracts/utils/Strings
// License: MIT
library Strings {
    bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;
    
    function toString(uint256 value) internal pure returns (string memory) {
        if (value == 0) {
            return "0";
        }
        uint256 temp = value;
        uint256 digits;
        while (temp != 0) {
            digits++;
            temp /= 10;
        }
        bytes memory buffer = new bytes(digits);
        while (value != 0) {
            digits -= 1;
            buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
            value /= 10;
        }
        return string(buffer);
    }

    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _HEX_SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }
}

/**
* @title Kollab Share Contract Factory.
* @author DSDK Technologies.
* @notice You can use this factory to create and interface with kollab shares.
* @dev All function calls are currently implemented without side effects.
* @custom:developer Etienne Cellier-Clarke.
*/
contract Factory {

    address payable private owner;

    uint public creationFee;
    uint32 public transactionFee;
    uint64 private idCounter;

    address[] public managers;
    mapping(uint64 => Kollab_Share) private kollabs;
    mapping(address => uint64) private kollabIDs;
    mapping(address => uint64[]) private asocKollabs;
    mapping(address => uint64[]) private createdKollabs;
    address[] private automaticKollabs;

    /**
    * @notice Executed when contract is deployed. Defines the owner.
    * of the contract, as the message sender. It also sets the initial
    * fee values.
    */
    constructor() {
        owner = payable(msg.sender);
        managers = [msg.sender];
        creationFee = 10000000000000000; // Wei
        transactionFee = 10000; // Fraction of 10000000
        idCounter = 0;
    }

    modifier onlyOwner {
        require(msg.sender == owner, "Error: 1000");
        _;
    }

    receive() external payable {}

    /**
    * @notice Use this contract to create a new kollab share.
    * @param _name Name of the contract.
    */
    function create(
        string memory _name,
        string memory _description,
        address[] memory _payees,
        uint64[] memory _shares,
        bool _automatic
    ) external payable {

        uint64 id = ++idCounter;

        require(!exists(id), 'Error: 1001');
        require(msg.value >= creationFee, 'Error: 1002');
        require(bytes(_name).length <= 20, 'Error: 1003');
        require(bytes(_description).length <= 50, '1003');
        require(_payees.length == _shares.length, 'Error: 1004');

        if(_automatic) { require(_payees.length <= 8, "Error: 1013"); }

        uint64 total_shares;
        for(uint16 i = 0; i < _shares.length; i++) {
            total_shares += _shares[i];
        }

        require(total_shares <= 1000000000000, 'Error: 1005');

        kollabs[id] = new Kollab_Share(
            _name,
            _description,
            _payees,
            _shares,
            total_shares,
            transactionFee,
            msg.sender,
            address(this),
            _automatic
        );

        for(uint16 i = 0; i < _payees.length; i++) {
            asocKollabs[_payees[i]].push(id);
        }

        createdKollabs[msg.sender].push(id);

    }

    /**
    * @notice Retrieve all data (except shareholders) about a specific kollab share.
    * @param _id UUID used to identify which kollab share to access.
    * @return result An array of strings which contains the collated data.
    */
    function getShareData(uint64 _id, address _account) public view returns (string[] memory) {
        string[] memory result;
        if(!exists(_id)) { return result; }
        return kollabs[_id].getData(_account);
    }

    /**
    * @notice Allows the retrieval of all UUIDs associated with an address
    * where the address is a payee of a kollab share.
    * @param _account Address of account to retrieve UUIDs for.
    * @return UUIDs An array of UUIDs.
    */
    function getIds(address _account) public view returns (uint64[] memory) {
        return asocKollabs[_account];
    }

    /**
    * @notice Allows the retrieval of all UUIDs associated with an address
    * where the address is a creator of a kollab share.
    * @param _account Address of account to retrieve UUIDs for.
    * @return UUIDs An array of UUIDs.
    */
    function getCreatedIds(address _account) public view returns (uint64[] memory) {
        return createdKollabs[_account];
    }

    /**
    * @notice Retrieves all shareholders and their number of assigned shares.
    * @param _id UUID of a kollab share.
    * @return sharholders An array containing each address and associated shares
    * founnd within a kollab share. 
    */
    function getShareholders(uint64 _id) public view returns (string[] memory) {
        return kollabs[_id].getShareholders();
    }

    /**
    * @notice The owner of the contract factory can set a new owner
    * transferring permissions.
    */
    function changeOwner(address _account) onlyOwner public {
        owner = payable(_account);
    }

    /**
    * @notice Add manager to list of managers which can flush contracts
    * @param _account Wallet address to add to list of managers
    */
    function addManager(address _account) onlyOwner public {
        managers.push(_account);
    }

    /**
    * @notice Remove manager from managers
    * @param _account Address of manager to remove
    */
    function removeManager(address _account) onlyOwner public {
        require(isManager(_account), "Error: 1014");
        uint index = 0;
        for(uint i = 0; i < managers.length; i++) {
            if(managers[i] == _account) { index = i; break; }
        }
        managers[index] = managers[managers.length - 1];
        managers.pop();
    }

    /**
    * @notice Check if address provided is a manager
    * @param _account Address of manager to check
    */
    function isManager(address _account) internal view returns (bool) {
        for(uint i = 0; i < managers.length; i++) {
            if(managers[i] == _account) { return true; }
        }
        return false;
    }

    /**
    * @notice Retrieve list of managers
    */
    function getManagers() public view returns (address[] memory) {
        return managers;
    }

    /**
    * @notice Allows only the contract owner to change the creation fee
    * as long as the new fee is not less than 0.
    * @param _fee The new fee value which will be used henceforth.
    */
    function changeCreationFee(uint _fee) onlyOwner public {
        require(_fee >= 0, 'Error: 1006');
        creationFee = _fee;
    }

    /**
    * @notice Allows only the contract owner to change the transaction fee
    * as long as the new fee is not less than 0. When a fee is changed it will
    * only apply to new kollab shares being created.
    * @param _fee The new fee value which will be used henceforth.
    */
    function changeTransactionFee(uint32 _fee) onlyOwner public {
        require(_fee >= 0, 'Error: 1006');
        transactionFee = _fee;
    }

    /**
    * @notice The owner of the contract can release accumulated fees to their wallet.
    */
    function releaseFunds() onlyOwner public {
        owner.transfer(address(this).balance);
    }