# BiasCalculator

### Storage

#### GAUGE\_CONTROLLER

```solidity
address GAUGE_CONTROLLER
```

Address of the Curve Gauge Controller

#### questBoard

```solidity
address questBoard
```

Address of the QuestBoard contract

### Events

#### AddToVoterList

```solidity
event AddToVoterList(uint256 questID, address account)
```

Event emitted when an address is added to a Quest voter list

#### RemoveFromVoterList

```solidity
event RemoveFromVoterList(uint256 questID, address account)
```

Event emitted when an address is removed from a Quest voter list

### Modifiers

#### onlyBoard

```solidity
modifier onlyBoard()
```

Check the caller is the QuestBoard contract

### Constructor

```solidity
constructor(address _gaugeController, address _questBoard) public
```

### View Methods

#### getCurrentPeriod

```solidity
function getCurrentPeriod() public view returns (uint256)
```

Returns the current Period for the contract

#### getQuestVoterList

```solidity
function getQuestVoterList(uint256 questID) external view returns (address[])
```

Returns the voter list for a given Quest

**Parameters**

| Name    | Type    | Description     |
| ------- | ------- | --------------- |
| questID | uint256 | ID of the Quest |

**Return Values**

| Name | Type       | Description            |
| ---- | ---------- | ---------------------- |
| \[0] | address\[] | address\[] : vote list |

#### getCurrentReducedBias

```solidity
function getCurrentReducedBias(uint256 questID, address gauge, enum QuestDataTypes.QuestVoteType questType) external view returns (uint256)
```

Returns the current reduced bias for a given gauge (based on a Quest's voter list)

**Parameters**

| Name      | Type                              | Description            |
| --------- | --------------------------------- | ---------------------- |
| questID   | uint256                           | ID of the Quest        |
| gauge     | address                           | address of the gauge   |
| questType | enum QuestDataTypes.QuestVoteType | Vote type of the Quest |

**Return Values**

| Name | Type    | Description                    |
| ---- | ------- | ------------------------------ |
| \[0] | uint256 | uint256 : current reduced bias |

#### getReducedBias

```solidity
function getReducedBias(uint256 period, uint256 questID, address gauge, enum QuestDataTypes.QuestVoteType questType) public view returns (uint256)
```

Returns the reduced bias for a given gauge for a given period (based on a Quest's voter list)

**Parameters**

| Name      | Type                              | Description             |
| --------- | --------------------------------- | ----------------------- |
| period    | uint256                           | timestamp of the period |
| questID   | uint256                           | ID of the Quest         |
| gauge     | address                           | address of the gauge    |
| questType | enum QuestDataTypes.QuestVoteType | Vote type of the Quest  |

**Return Values**

| Name | Type    | Description                    |
| ---- | ------- | ------------------------------ |
| \[0] | uint256 | uint256 : current reduced bias |

#### \_getVoterBias

```solidity
function _getVoterBias(address gauge, address voter, uint256 period) internal view returns (uint256 userBias)
```

Returns the bias for a given voter for a given gauge, at a given period

**Parameters**

| Name   | Type    | Description             |
| ------ | ------- | ----------------------- |
| gauge  | address | address of the gauge    |
| voter  | address | address of the voter    |
| period | uint256 | timestamp of the period |

**Return Values**

| Name     | Type    | Description            |
| -------- | ------- | ---------------------- |
| userBias | uint256 | (uint256) : voter bias |

### State-changing Methods

#### \_addToVoterList

```solidity
function _addToVoterList(uint256 questID, address account) internal
```

Adds a given address to a Quest's voter list

*Adds a given address to a Quest's voter list*

**Parameters**

| Name    | Type    | Description          |
| ------- | ------- | -------------------- |
| questID | uint256 | ID of the Quest      |
| account | address | address of the voter |

#### setQuestVoterList

```solidity
function setQuestVoterList(uint256 questID, address[] accounts) external
```

Sets the initial voter list for a given Quest

**Parameters**

| Name     | Type       | Description     |
| -------- | ---------- | --------------- |
| questID  | uint256    | ID of the Quest |
| accounts | address\[] | list of voters  |

#### addToVoterList

```solidity
function addToVoterList(uint256 questID, address[] accounts) external
```

Adds a given list of addresses to a Quest's voter list

**Parameters**

| Name     | Type       | Description     |
| -------- | ---------- | --------------- |
| questID  | uint256    | ID of the Quest |
| accounts | address\[] | list of voters  |

#### removeFromVoterList

```solidity
function removeFromVoterList(uint256 questID, address account) external
```

Removes a given address from a Quest's voter list

**Parameters**

| Name    | Type    | Description          |
| ------- | ------- | -------------------- |
| questID | uint256 | ID of the Quest      |
| account | address | address of the voter |


---

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