/
pool-read-liquidation-v1-3.clar
529 lines (479 loc) · 16.3 KB
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pool-read-liquidation-v1-3.clar
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(use-trait ft .ft-trait.ft-trait)
(use-trait ft-mint-trait .ft-mint-trait.ft-mint-trait)
(use-trait oracle-trait .oracle-trait.oracle-trait)
;; before calculating, add up all:
;; liquidity-balanceUSD
;; current-ltv
;; current-liquidation-threshold
(define-read-only (calculate-user-limits
(total-collateral-balanceUSD uint)
(total-current-ltv uint)
(total-current-liquidation-threshold uint)
(total-borrow-balanceUSD uint)
(total-feesUSD uint)
)
(let (
(health-factor-liquidation-threshold (contract-call? .pool-reserve-data get-health-factor-liquidation-threshold-read))
(ltv (div total-current-ltv total-collateral-balanceUSD))
(liquidation-threshold (div total-current-liquidation-threshold total-collateral-balanceUSD))
(health-factor (calculate-health-factor-from-balances
total-collateral-balanceUSD
total-borrow-balanceUSD
total-feesUSD
liquidation-threshold
))
)
{
ltv: ltv,
liquidation-threshold: liquidation-threshold,
health-factor: health-factor,
health-factor-below-threshold: (< health-factor health-factor-liquidation-threshold)
}
)
)
(define-read-only (calculate-health-factor-from-balances
(total-collateral-balanceUSD uint)
(total-borrow-balanceUSD uint)
(total-feesUSD uint)
(current-liquidation-threshold uint))
(begin
(if (is-eq total-borrow-balanceUSD u0)
max-value
(div
(mul
total-collateral-balanceUSD
current-liquidation-threshold
)
(+ total-borrow-balanceUSD total-feesUSD)
)
)
)
)
(define-read-only (get-user-asset-debt-data-ststx (user principal))
(let ((unit-price (get-ststx-price)))
(calculate-user-asset-debt user 'SP4SZE494VC2YC5JYG7AYFQ44F5Q4PYV7DVMDPBG.ststx-token unit-price)
)
)
(define-read-only (get-user-asset-debt-data-stx (user principal))
(let ((unit-price (contract-call? 'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.stx-oracle-v1-3 get-price)))
(calculate-user-asset-debt user 'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.wstx unit-price)
)
)
(define-read-only (get-user-asset-debt-data-aeusdc (user principal))
(let ((unit-price (contract-call? 'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.aeusdc-oracle-v1-0 get-price)))
(calculate-user-asset-debt user 'SP3Y2ZSH8P7D50B0VBTSX11S7XSG24M1VB9YFQA4K.token-aeusdc unit-price)
)
)
;; check if can be used as collateral before calling this
(define-read-only (get-user-asset-collateral-data-ststx (user principal))
(let (
(reserve-data (get-reserve-data 'SP4SZE494VC2YC5JYG7AYFQ44F5Q4PYV7DVMDPBG.ststx-token))
(user-index (get-user-index user 'SP4SZE494VC2YC5JYG7AYFQ44F5Q4PYV7DVMDPBG.ststx-token))
(principal-balance (unwrap-panic (contract-call? 'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.zststx-v1-0 get-principal-balance user)))
(decimals (get decimals reserve-data))
(unit-price (get-ststx-price))
)
(calculate-user-asset-collateral
principal-balance
decimals
(get current-liquidity-rate reserve-data)
(get last-updated-block reserve-data)
(get last-liquidity-cumulative-index reserve-data)
user-index
unit-price
(get base-ltv-as-collateral reserve-data)
(get liquidation-threshold reserve-data)
)
)
)
;; check if can be used as collateral before calling this
(define-read-only (get-user-asset-collateral-data-stx (user principal))
(let (
(reserve-data (get-reserve-data 'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.wstx))
(user-index (get-user-index user 'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.wstx))
(principal-balance (unwrap-panic (contract-call? 'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.zwstx-v1 get-principal-balance user)))
(decimals (get decimals reserve-data))
(unit-price (contract-call? 'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.stx-oracle-v1-3 get-price))
)
(calculate-user-asset-collateral
principal-balance
decimals
(get current-liquidity-rate reserve-data)
(get last-updated-block reserve-data)
(get last-liquidity-cumulative-index reserve-data)
user-index
unit-price
(get base-ltv-as-collateral reserve-data)
(get liquidation-threshold reserve-data)
)
)
)
;; check if can be used as collateral before calling this
(define-read-only (get-user-asset-collateral-data-aeusdc (user principal))
(let (
(reserve-data (get-reserve-data 'SP3Y2ZSH8P7D50B0VBTSX11S7XSG24M1VB9YFQA4K.token-aeusdc))
(user-index (get-user-index user 'SP3Y2ZSH8P7D50B0VBTSX11S7XSG24M1VB9YFQA4K.token-aeusdc))
(principal-balance (unwrap-panic (contract-call? .zaeusdc-v1-0 get-principal-balance user)))
(decimals (get decimals reserve-data))
(unit-price (contract-call? 'SP2VCQJGH7PHP2DJK7Z0V48AGBHQAW3R3ZW1QF4N.aeusdc-oracle-v1-0 get-price))
)
(calculate-user-asset-collateral
principal-balance
decimals
(get current-liquidity-rate reserve-data)
(get last-updated-block reserve-data)
(get last-liquidity-cumulative-index reserve-data)
user-index
unit-price
(get base-ltv-as-collateral reserve-data)
(get liquidation-threshold reserve-data)
)
)
)
(define-read-only (get-ststx-price)
(let (
(stx-price (get last-price (contract-call? 'SP2C2YFP12AJZB4MABJBAJ55XECVS7E4PMMZ89YZR.arkadiko-oracle-v2-3 get-price "STX")))
(stx-amount-in-reserve (unwrap-panic (contract-call? 'SP4SZE494VC2YC5JYG7AYFQ44F5Q4PYV7DVMDPBG.reserve-v1 get-total-stx)))
(stx-ststx (contract-call? 'SP4SZE494VC2YC5JYG7AYFQ44F5Q4PYV7DVMDPBG.stacking-dao-core-v1 get-stx-per-ststx-helper stx-amount-in-reserve))
)
(/ (* stx-ststx stx-price) u10000)
)
)
(define-read-only (calculate-user-asset-debt (user principal) (asset principal) (unit-price uint))
(let (
(reserve-data (get-reserve-data asset))
(user-reserve-data (get-user-reserve-data user asset))
(compounded-borrow-balance
(get-compounded-borrow-balance
(get principal-borrow-balance user-reserve-data)
(get decimals reserve-data)
(get stable-borrow-rate user-reserve-data)
(get last-updated-block user-reserve-data)
(get last-variable-borrow-cumulative-index user-reserve-data)
(get current-variable-borrow-rate reserve-data)
(get last-variable-borrow-cumulative-index reserve-data)
(get last-updated-block reserve-data)
)
)
)
{
borrow-balanceUSD: (mul-to-fixed-precision compounded-borrow-balance (get decimals reserve-data) unit-price),
user-feesUSD: (mul-to-fixed-precision (get origination-fee user-reserve-data) (get decimals reserve-data) unit-price),
}
)
)
(define-read-only (calculate-user-asset-collateral
(principal-balance uint)
(decimals uint)
(current-liquidity-rate uint)
(last-updated-block uint)
(last-liquidity-cumulative-index uint)
(user-index uint)
(unit-price uint)
(base-ltv-as-collateral uint)
(liquidation-threshold uint)
)
(let (
(underlying-balance
(from-fixed-to-precision
(mul-to-fixed-precision
principal-balance
decimals
(div (get-normalized-income
current-liquidity-rate
last-updated-block
last-liquidity-cumulative-index)
user-index)
)
decimals
)
)
(collateral-balanceUSD (mul-to-fixed-precision underlying-balance decimals unit-price))
)
{
collateral-balanceUSD: collateral-balanceUSD,
current-ltv: (mul collateral-balanceUSD base-ltv-as-collateral),
current-liquidation-threshold: (mul collateral-balanceUSD liquidation-threshold),
}
)
)
(define-read-only (get-reserve-data (asset principal))
(unwrap-panic (contract-call? .pool-reserve-data get-reserve-state-read asset))
)
(define-read-only (get-user-reserve-data (who principal) (asset principal))
(unwrap-panic (contract-call? .pool-reserve-data get-user-reserve-data-read who asset))
)
(define-read-only (get-user-index (who principal) (asset principal))
(unwrap-panic (contract-call? .pool-reserve-data get-user-index-read who asset))
)
(define-read-only (calculate-cumulated-balance
(who principal)
(lp-decimals uint)
(asset principal)
(asset-balance uint)
(asset-decimals uint))
(let (
(reserve-data (get-reserve-data asset))
(user-index (get-user-index who asset))
(underlying-balance
(from-fixed-to-precision
(mul-to-fixed-precision
asset-balance
asset-decimals
(div (get-normalized-income
(get current-liquidity-rate reserve-data)
(get last-updated-block reserve-data)
(get last-liquidity-cumulative-index reserve-data))
user-index)
)
asset-decimals
)
))
underlying-balance
)
)
(define-read-only (get-normalized-income
(current-liquidity-rate uint)
(last-updated-block uint)
(last-liquidity-cumulative-index uint))
(let (
(cumulated
(calculate-linear-interest
current-liquidity-rate
(- burn-block-height last-updated-block))))
(mul cumulated last-liquidity-cumulative-index)
)
)
(define-read-only (calculate-linear-interest
(current-liquidity-rate uint)
(delta uint))
(let (
(rate (get-rt-by-block current-liquidity-rate delta))
)
(+ one-8 rate)
)
)
(define-read-only (get-user-borrow-balance (who principal) (reserve principal))
(let (
(reserve-data (get-reserve-data reserve))
(user-data (get-user-reserve-data who reserve))
(principal (get principal-borrow-balance user-data))
(cumulated-balance
(get-compounded-borrow-balance
(get principal-borrow-balance user-data)
(get decimals reserve-data)
(get stable-borrow-rate user-data)
(get last-updated-block user-data)
(get last-variable-borrow-cumulative-index user-data)
(get current-variable-borrow-rate reserve-data)
(get last-variable-borrow-cumulative-index reserve-data)
(get last-updated-block reserve-data)
)))
{
principal-balance: principal,
compounded-balance: cumulated-balance,
balance-increase: (- cumulated-balance principal),
}
)
)
(define-read-only (get-compounded-borrow-balance
;; user-data
(principal-borrow-balance uint)
(decimals uint)
(stable-borrow-rate uint)
(last-updated-block uint)
(last-variable-borrow-cumulative-index uint)
;; reserve-data
(current-variable-borrow-rate uint)
(last-variable-borrow-cumulative-index-reserve uint)
(last-updated-block-reserve uint)
)
(let (
(user-cumulative-index
(if (is-eq last-variable-borrow-cumulative-index u0)
last-variable-borrow-cumulative-index-reserve
last-variable-borrow-cumulative-index
)
)
(cumulated-interest
(div
(mul
(calculate-compounded-interest
current-variable-borrow-rate
(- burn-block-height last-updated-block))
last-variable-borrow-cumulative-index-reserve)
user-cumulative-index))
(compounded-balance (mul-precision-with-factor principal-borrow-balance decimals cumulated-interest)))
(if (is-eq compounded-balance principal-borrow-balance)
(if (not (is-eq last-updated-block burn-block-height))
(+ principal-borrow-balance u1)
compounded-balance
)
compounded-balance
)
)
)
;; MATH
(define-constant sb-by-sy u1903)
(define-constant one-8 u100000000)
(define-constant one-12 u1000000000000)
(define-constant fixed-precision u8)
(define-constant max-value u340282366920938463463374607431768211455)
(define-read-only (get-max-value) max-value)
(define-read-only (calculate-compounded-interest
(current-liquidity-rate uint)
(delta uint))
(begin
(taylor-6 (get-rt-by-block current-liquidity-rate delta))
)
)
(define-read-only (mul (x uint) (y uint))
(/ (+ (* x y) (/ one-8 u2)) one-8))
(define-read-only (div (x uint) (y uint))
(/ (+ (* x one-8) (/ y u2)) y))
(define-read-only (mul-to-fixed-precision (a uint) (decimals-a uint) (b-fixed uint))
(if (> decimals-a fixed-precision)
(mul (/ a (pow u10 (- decimals-a fixed-precision))) b-fixed)
(mul (* a (pow u10 (- fixed-precision decimals-a))) b-fixed)
)
)
(define-read-only (div-to-fixed-precision (a uint) (decimals-a uint) (b-fixed uint))
(if (> decimals-a fixed-precision)
(div (/ a (pow u10 (- decimals-a fixed-precision))) b-fixed)
(div (* a (pow u10 (- fixed-precision decimals-a))) b-fixed)
)
)
;; assumes assets used do not have more than 12 decimals
(define-read-only (div-precision-to-fixed (a uint) (b uint) (decimals uint))
(let (
(adjustment-difference (- one-12 decimals))
(result (/ (* a (pow u10 decimals)) b)))
(to-fixed result decimals)
)
)
(define-read-only (mul-precision-with-factor (a uint) (decimals-a uint) (b-fixed uint))
(from-fixed-to-precision (mul-to-fixed-precision a decimals-a b-fixed) decimals-a)
)
(define-read-only (add-precision-to-fixed (a uint) (decimals-a uint) (b-fixed uint))
(if (> decimals-a fixed-precision)
(+ (/ a (pow u10 (- decimals-a fixed-precision))) b-fixed)
(+ (* a (pow u10 (- fixed-precision decimals-a))) b-fixed)
)
)
(define-read-only (sub-precision-to-fixed (a uint) (decimals-a uint) (b-fixed uint))
(if (> decimals-a fixed-precision)
(- (/ a (pow u10 (- decimals-a fixed-precision))) b-fixed)
(- (* a (pow u10 (- fixed-precision decimals-a))) b-fixed)
)
)
(define-read-only (to-fixed (a uint) (decimals-a uint))
(if (> decimals-a fixed-precision)
(/ a (pow u10 (- decimals-a fixed-precision)))
(* a (pow u10 (- fixed-precision decimals-a)))
)
)
(define-read-only (mul-perc (a uint) (decimals-a uint) (b-fixed uint))
(if (> decimals-a fixed-precision)
(begin
(*
(mul (/ a (pow u10 (- decimals-a fixed-precision))) b-fixed)
(pow u10 (- decimals-a fixed-precision))
)
)
(begin
(/
(mul (* a (pow u10 (- fixed-precision decimals-a))) b-fixed)
(pow u10 (- fixed-precision decimals-a))
)
)
)
)
(define-read-only (fix-precision (a uint) (decimals-a uint) (b uint) (decimals-b uint))
(let (
(a-standard
(if (> decimals-a fixed-precision)
(/ a (pow u10 (- decimals-a fixed-precision)))
(* a (pow u10 (- fixed-precision decimals-a)))
))
(b-standard
(if (> decimals-b fixed-precision)
(/ b (pow u10 (- decimals-b fixed-precision)))
(* b (pow u10 (- fixed-precision decimals-b)))
))
)
{
a: a-standard,
decimals-a: decimals-a,
b: b-standard,
decimals-b: decimals-b,
}
)
)
(define-read-only (from-fixed-to-precision (a uint) (decimals-a uint))
(if (> decimals-a fixed-precision)
(* a (pow u10 (- decimals-a fixed-precision)))
(/ a (pow u10 (- fixed-precision decimals-a)))
)
)
(define-read-only (get-y-from-x
(x uint)
(x-decimals uint)
(y-decimals uint)
(x-price uint)
(y-price uint)
)
(from-fixed-to-precision
(mul-to-fixed-precision x x-decimals (div x-price y-price))
y-decimals
)
)
(define-read-only (is-odd (x uint))
(not (is-even x))
)
(define-read-only (is-even (x uint))
(is-eq (mod x u2) u0)
)
;; rate in 8-fixed
;; n-blocks
(define-read-only (get-rt-by-block (rate uint) (blocks uint))
(/ (* rate (* blocks sb-by-sy)) one-8)
)
;; block-seconds/year-seconds in fixed precision
(define-read-only (get-sb-by-sy)
sb-by-sy
)
(define-read-only (get-e) e)
(define-read-only (get-one) one-8)
(define-constant e 271828182)
(define-constant seconds-in-year u31536000
;; (* u144 u365 u10 u60)
)
(define-constant seconds-in-block u600
;; (* 10 60)
)
(define-read-only (get-seconds-in-year)
seconds-in-year
)
(define-read-only (get-seconds-in-block)
seconds-in-block
)
(define-constant fact_2 u200000000)
(define-constant fact_3 (mul u300000000 u200000000))
(define-constant fact_4 (mul u400000000 (mul u300000000 u200000000)))
(define-constant fact_5 (mul u500000000 (mul u400000000 (mul u300000000 u200000000))))
(define-constant fact_6 (mul u600000000 (mul u500000000 (mul u400000000 (mul u300000000 u200000000)))))
(define-read-only (x_2 (x uint)) (mul x x))
(define-read-only (x_3 (x uint)) (mul x (mul x x)))
(define-read-only (x_4 (x uint)) (mul x (mul x (mul x x))))
(define-read-only (x_5 (x uint)) (mul x (mul x (mul x (mul x x)))))
(define-read-only (x_6 (x uint)) (mul x (mul x (mul x (mul x (mul x x))))))
(define-read-only (taylor-6 (x uint))
(+
one-8 x
(div (x_2 x) fact_2)
(div (x_3 x) fact_3)
(div (x_4 x) fact_4)
(div (x_5 x) fact_5)
(div (x_6 x) fact_6)
)
)