/**
 * AgentGuard(TM) Spend: Advisor governance posture profiles.
 *
 * Patent notice: Protected by U.S. patent-pending technology
 * (App. Nos. 63/983,615; 63/983,621; 63/983,843; 63/984,626;
 * 64/071,781; 64/071,789).
 */

import type { CapabilityTier, EnforcementMode } from '../types';

export type GovernancePosture = 'velocity' | 'standard' | 'compliance';

export interface GovernancePostureProfile {
  posture: GovernancePosture;
  label: string;
  defaultMode: EnforcementMode;
  capabilityStyle: 'permissive' | 'balanced' | 'strict';
  downgradeStyle: 'aggressive' | 'moderate' | 'conservative';
  auditRetentionDays: number;
  approvalGates: boolean;
  canaryPercent?: number;
}

export const GOVERNANCE_POSTURES: Record<GovernancePosture, GovernancePostureProfile> = {
  velocity: {
    posture: 'velocity',
    label: 'Velocity',
    defaultMode: 'shadow',
    capabilityStyle: 'permissive',
    downgradeStyle: 'aggressive',
    auditRetentionDays: 30,
    approvalGates: false,
  },
  standard: {
    posture: 'standard',
    label: 'Standard',
    defaultMode: 'enforce',
    capabilityStyle: 'balanced',
    downgradeStyle: 'moderate',
    auditRetentionDays: 90,
    approvalGates: false,
  },
  compliance: {
    posture: 'compliance',
    label: 'Compliance',
    defaultMode: 'canary',
    capabilityStyle: 'strict',
    downgradeStyle: 'conservative',
    auditRetentionDays: 2555,
    approvalGates: true,
    canaryPercent: 5,
  },
};

const VERTICAL_POSTURES: Record<string, GovernancePosture> = {
  'law-firm': 'compliance',
  healthcare: 'compliance',
  accounting: 'compliance',
  fintech: 'compliance',
  insurance: 'compliance',
  'real-estate': 'standard',
  marketing: 'standard',
  ecommerce: 'standard',
  'local-services': 'standard',
  dental: 'compliance',
  software: 'velocity',
  startup: 'standard',
  'ai-lab': 'velocity',
  'ai-team': 'velocity',
};

export function normalizePosture(value?: string | null): GovernancePosture | null {
  const normalized = (value ?? '').trim().toLowerCase();
  if (normalized === 'velocity' || normalized === 'standard' || normalized === 'compliance') return normalized;
  return null;
}

export function postureProfile(posture: GovernancePosture): GovernancePostureProfile {
  return GOVERNANCE_POSTURES[posture];
}

export function suggestPostureForVertical(vertical: string): GovernancePosture {
  return VERTICAL_POSTURES[vertical] ?? 'standard';
}

export function applyPostureCapability(
  posture: GovernancePosture,
  text: string,
  fallback: CapabilityTier,
): CapabilityTier {
  const lowered = text.toLowerCase();
  if (posture === 'velocity') {
    if (/execute|wire|ach|payout|capture funds/.test(lowered)) return 'payment_execute';
    if (/refund|payment|charge|dispute|money|invoice/.test(lowered)) return 'payment_initiate';
    return 'read_only';
  }

  if (posture === 'compliance') {
    if (/refund|payment|charge|dispute|money|invoice|ledger|sox|fintech|bank/.test(lowered)) return 'payment_execute';
    if (/write|update|chart|patient|health|phi|pii|legal|contract|tax|student|employment/.test(lowered)) return 'data_write';
    return fallback === 'read_only' ? 'data_write' : fallback;
  }

  if (/refund|payment|charge|dispute|money|invoice/.test(lowered)) return 'payment_initiate';
  if (/write|update|ledger|chart|patient|health|phi|pii|sox|legal|contract|tax|student|employment/.test(lowered)) return 'data_write';
  return fallback;
}

export function postureDescription(posture: GovernancePosture): string {
  const profile = postureProfile(posture);
  return `${profile.label}: mode ${profile.defaultMode}, ${profile.capabilityStyle} capabilities, ${profile.downgradeStyle} downgrade chains, ${profile.auditRetentionDays} day audit retention`;
}