TruPreSale

The TruPreSale Smart Contract acts a child class to the TruSale and is used for the main CrowdSale of the TruReputationToken.

Title:	TruPreSale
Description:	Smart Contract for the Pre-Sale of the TruReputationToken.
Author:	Ian Bray, Tru Ltd
Solidity Version:	0.4.18
Relative Path:	./contracts/TruPreSale.sol
License:	Apache 2 License
Current Version:	0.1.12

1. Imports & Dependencies

The following imports and dependencies exist for the TruPreSale Smart Contract:

Name	Description
TruSale	Parent Smart Contract for all TruReputationToken Token Sales
TruReputationToken	Smart Contract for the Tru Reputation Token
SafeMath	Zeppelin Solidity Library to perform mathematics safely inside Solidity

2. Variables

The following variables exist for the TruPreSale Smart Contract:

Variable	Type	Vis	Details
PRESALE_CAP	uint256	public	Variable for the Pre-Sale cap Default: 8000 * 10^18

3. Enums

There are no enums for the TruPreSale Smart Contract.

4. Events

There are no events for the TruPreSale Smart Contract.

5. Mappings

There are no mappings for the TruPreSale Smart Contract.

6. Modifiers

There are no modifiers for the TruPreSale Smart Contract.

7. Functions

The following functions exist for the TruPreSale Smart Contract:

Name	Description
TruPreSale Constructor	Constructor for the TruPreSale Smart Contract
finalise	Function to finalise Pre-Sale.
completion	Internal function to complete Pre-Sale.

TruPreSale Constructor

Function Name:	TruPreSale
Description:	Constructor for the TruPreSale Smart Contract
Function Type:	Constructor
Function Visibility:	Public
Function Modifiers:	N/A
Return Type:	None
Return Details:	N/A

Code

The code for the TruPreSale Constructor function is as follows:

TruPreSale Constructor Code

unction TruPreSale(
    uint256 _startTime,
    uint256 _endTime,
    address _token,
    address _saleWallet) public TruSale(_startTime, _endTime, _token, _saleWallet)
{
        isPreSale = true;
        isCrowdSale = false;
        cap = PRESALE_CAP;
}

The TruPreSale Constructor function performs the following:

• Executes the super TruSale Constructor function.
• Sets the isPreSale variable to true.
• Sets the isCrowdSale variable to false.
• Set the cap variable to equal the PRESALE_CAP variable value.

Usage

The TruPreSale Constructor function has the following usage syntax and arguments:

	Argument	Type	Details
1	_startTime	uint256	Sale start timestamp
2	_endTime	uint256	Sale end timestamp
3	_token	address	Address of TruReputationToken Contract
4	_saleWallet	address	Address of TruPreSale wallet

TruPreSale Constructor Usage Example

 TruPreSale(1511930475,
              1512016874,
              0x123456789abcdefghijklmnopqrstuvwxyz98765,
              0x987654321abcdefghijklmnopqrstuvwxyz12345);

finalise

Function Name:	finalise
Description:	Function to finalise Pre-Sale.
Function Type:	N/A
Function Visibility:	Public
Function Modifiers:	ref:ownable-only-owner
Return Type:	None
Return Details:	N/A

Code

The code for the finalise function is as follows:

finalise Code

function finalise() public onlyOwner {
    require(!isCompleted);
    require(hasEnded());

    completion();
    Completed();

    isCompleted = true;
}

The finalise function performs the following:

• Checks that the isCompleted variable is set to false. If not, it will throw.
• Checks the hasEnded function returns true. If not, it will throw.
• Executes the completion function.
• Fires the Completed event.
• Sets isCompleted variable to true.

Usage

The finalise function has the following usage syntax:

finalise Usage Example

finalise();

completion

Function Name:	completion
Description:	Internal function to complete Pre-Sale.
Function Type:	N/A
Function Visibility:	Internal
Function Modifiers:	N/A
Return Type:	None
Return Details:	N/A

Code

The code for the completion function is as follows:

completion Code

function completion() internal {

    // Double sold pool to allocate to Tru Resource Pools
    uint256 poolTokens = truToken.totalSupply();

    // Issue poolTokens to multisig wallet
    truToken.mint(multiSigWallet, poolTokens);
    truToken.finishMinting(true, false);
    truToken.transferOwnership(msg.sender);
}

The completion function performs the following:

• Calculates the number of tokens sold in this Pre-Sale and mints the same amount again into the multiSigWallet Sale wallet for use by Tru Ltd as per the Tru Reputation Protocol Whitepaper.
• Executes the finishMinting function to end Pre-Sale minting and await CrowdSale minting
• Transfers ownership of the TruReputationToken back to the executing account now the Pre-Sale is complete.

Usage

The completion function has the following usage syntax:

completion Usage Example

completion();