;; Simple Liquidator Contract
;; ==========================
;; Implements the liquidator trait and works with the lending pool
;; This contract is verified by the lending pool using contract-hash?
(impl-trait .liquidator-trait.liquidator-trait)
;; Constants
(define-constant LIQUIDATION-BONUS-BPS u1000) ;; 10% bonus
(define-constant err-liquidation-failed (err u500))
(define-constant err-insufficient-funds (err u501))
;; Implement liquidate function from trait
(define-public (liquidate (borrower principal) (debt-amount uint))
(let (
;; Calculate total amount needed (debt + bonus)
(total-needed (+ debt-amount (/ (* debt-amount LIQUIDATION-BONUS-BPS) u10000)))
)
;; Note: The actual liquidation logic is handled by the lending pool contract
;; This contract is called by the lending pool with restrict-assets? protection
;; The lending pool will:
;; 1. Verify this contract using contract-hash?
;; 2. Set asset restrictions using restrict-assets?
;; 3. Transfer collateral to this contract
;; 4. This contract can then process the liquidation (swap, etc.)
;; Validate inputs
(asserts! (> debt-amount u0) err-liquidation-failed)
(asserts! (> total-needed u0) err-liquidation-failed)
;; Return the amount that will be received (debt + bonus)
(ok total-needed)
)
)
;; Get liquidation bonus
(define-public (get-liquidation-bonus)
(ok LIQUIDATION-BONUS-BPS)
)
;; Check if a position can be liquidated
;; Note: This is a simplified check - in production, this would:
;; 1. Query the lending pool for the borrower's health factor
;; 2. Check with price oracle for asset prices
;; 3. Verify liquidation is profitable
(define-public (can-liquidate (borrower principal))
;; For now, return true - actual check should be done by calling lending pool
;; This function exists to satisfy the trait interface
(ok true)
)
;; Read-only version of liquidation bonus
(define-read-only (get-bonus-amount (debt uint))
(ok (/ (* debt LIQUIDATION-BONUS-BPS) u10000))
)