Struct PositionManager 

pub struct PositionManager;

Implementations

impl PositionManager

pub fn open_position( trader: Pubkey, market_id: Pubkey, side: PositionSide, size: u64, entry_price: u64, collateral: u64, leverage: u8, ) -> Result<Position>

Open a new position

pub fn calculate_pnl(position: &Position, current_price: u64) -> Result<i64>

Calculate unrealized P&L for a position

pub fn calculate_pnl_percent(pnl: i64, collateral: u64) -> Result<i32>

Calculate P&L percentage

pub fn calculate_unrealized_margin( position: &Position, current_price: u64, ) -> Result<u64>

Calculate unrealized margin

pub fn can_close_position(position: &Position) -> Result<bool>

Check if position can be closed

pub fn close_position( position: &mut Position, exit_price: u64, ) -> Result<(i64, u64)>

Close a position and calculate settlement

pub fn update_position_price( position: &mut Position, new_price: u64, ) -> Result<u16>

Update position price and calculate health factor

pub fn calculate_health_factor( position: &Position, current_price: u64, ) -> Result<u16>

Calculate health factor (0-10000 = 0-100%)

pub fn is_liquidatable(position: &Position, current_price: u64) -> Result<bool>

Check if position should be liquidated

pub fn calculate_position_value(position: &Position) -> Result<u64>

Calculate position value

pub fn calculate_exposure(position: &Position) -> Result<u64>

Calculate position exposure (size * leverage)

pub fn validate_position_sizing( size: u64, collateral: u64, leverage: u8, entry_price: u64, ) -> Result<()>

Validate position size relative to leverage