;; title: risk-assessment
;; version: 1.0.0
;; summary: Risk scoring and assessment
;; description: Calculate risk scores for positions - Clarity 4
;; Constants
(define-constant CONTRACT-OWNER tx-sender)
(define-constant ERR-UNAUTHORIZED (err u5300))
;; Risk levels
(define-constant RISK-LOW u1)
(define-constant RISK-MEDIUM u2)
(define-constant RISK-HIGH u3)
(define-constant RISK-CRITICAL u4)
;; Data Maps - Using stacks-block-time for Clarity 4
(define-map position-risks principal {
risk-score: uint,
risk-level: uint,
assessed-at: uint ;; Clarity 4: Unix timestamp
})
;; Public Functions
(define-public (assess-risk (position principal) (collateral uint) (debt uint))
(let (
(ltv-ratio (/ (* debt u10000) collateral))
(risk-score (calculate-risk-score ltv-ratio))
(risk-level (determine-risk-level risk-score))
)
(asserts! (is-eq tx-sender CONTRACT-OWNER) ERR-UNAUTHORIZED)
(map-set position-risks position {
risk-score: risk-score,
risk-level: risk-level,
assessed-at: stacks-block-time
})
(print {
event: "risk-assessed",
position: position,
risk-score: risk-score,
risk-level: risk-level,
timestamp: stacks-block-time
})
(ok risk-score)
)
)
;; Private Functions
(define-private (calculate-risk-score (ltv uint))
ltv
)
(define-private (determine-risk-level (score uint))
(if (< score u5000)
RISK-LOW
(if (< score u7000)
RISK-MEDIUM
(if (< score u9000)
RISK-HIGH
RISK-CRITICAL
)
)
)
)
;; Read-Only Functions
(define-read-only (get-risk-assessment (position principal))
(map-get? position-risks position)
)
;; Clarity 4 Enhanced Functions
(define-read-only (validate-position-address (position principal))
(principal-destruct? position)
)
(define-read-only (format-risk-score (score uint))
(ok (int-to-ascii score)))
(define-read-only (parse-risk-level (level-str (string-ascii 10)))
(match (string-to-uint? level-str) level (ok level) (err u998)))
(define-read-only (get-risk-timestamps)
(ok {stacks-time: stacks-block-time, burn-time: burn-block-height}))