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Module Development Task: Automated Blacklisting
polymathnetwork
JavaScript, Solidity, Shell
# Module Development Task
# Automated Blacklisting
Module Type | Bounty | Completion deadline
-- | -- | --
Transfer Manager | Approx. 5, 000 POLY | 21 days to complete once task is confirmed by external developer(s).
# Short Summary
This module will allow approved staff to create and establish an automated blacklist to prevent Insiders from selling thus de-risking price swings during time sensitive cases like earning calls.
# Bounty Requirements
1. Module specs are fulfilled
2. Module is implemented using appropriate module interface
3. Module is tested with >95% branch coverage
4. Module is delivered before deadline
5. Module does not present any bugs.
6. 21 days to complete once task work has begun.
**IMPORTANT:** Please work from the development-1.5.0 branch instead of master.
# Suggested Implementation
```
Struct BlacklistDetails {
uint256 startDate;
uint256 endDate;
uint256 repeatPeriodInDays;
}
/// use to hold the different blacklist corresponds to name of blacklist type
mapping(bytes32 => BlacklistDetails) blacklists;
/// use to hold the blackListed address corresponds to the blacklist type
mapping(address => bytes32) inverstorToBlacklist;
/// use to get list of the addresses for a particular blacklist
mapping(bytes32 => address[]) blacklistToAddress;
// If Address is blackListed and its blacklist details lie within the current time then the transfer doesn’t happen should return INVALID
function verifyTransfer(address _from, address _to, uint256 /* _amount*/, bool /* _isTransfer */) public returns(Result) {
if (investorToBlackList[_from] != bytes32(0)) {
/// Add the logic for repeat periods
if (blacklists[investorToBlackList[_from]].endDate >= now && blacklists[investorToBlackList[_from]].startDate <= now) {
return Result.INVALID;
}
}
return Result.NA;
}
function addBlackListType(uint256 _startDate, uint256 _endDate, bytes32 _name, uint256 _repeatPeriodInDays);
function addInvestorToBlackList(address _investor, bytes32 _blackListName);
```
# Module Details Spec (Wireframe)
**Wireframe Link:** https://www.lucidchart.com/invitations/accept/c544a325-e74d-4e54-a360-71805a9f10ce
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