import type { AgentProfile } from '../types'
import { getTierForScore } from '../types'
import { getConfig } from '../config'

export function riskPenalty(agent: AgentProfile): number {
  const cfg = getConfig().scoring
  const now = Date.now()
  const last60s = agent.requestTimestamps.filter(t => now - t < 60_000).length
  const maxFreqPenalty = cfg?.maxFrequencyPenalty ?? 10
  const freqSpike = last60s > 15 ? maxFreqPenalty : last60s > 10 ? Math.min(7, maxFreqPenalty) : last60s > 5 ? Math.min(3, maxFreqPenalty) : 0

  const failedTx = Math.min(5, agent.failedRequests * 2)

  const hoursInactive = (now - agent.lastActive) / (60 * 60 * 1000)
  const decayRate = cfg?.inactivityDecayRate ?? 0.5
  const inactivity = Math.min(5, hoursInactive * decayRate)

  const dailyLimit = getTierForScore(agent.trustScore).dailyLimit
  const spendRatio = dailyLimit > 0 ? agent.dailySpent / dailyLimit : 0
  const spendPressure = spendRatio > 0.85 && agent.consecutiveApprovals > 0 ? 5 : 0

  const denialStreak = Math.min(5, agent.consecutiveDenials * 2.5)

  return Math.min(30, freqSpike + failedTx + inactivity + spendPressure + denialStreak)
}