/**
 * Centralized severity policy for Chain Inspector findings.
 * Applies profile-aware severity rules.
 */

export type Severity = "info" | "warn" | "error";
export type ProfileName = "discovery" | "decisioning";

/**
 * Apply severity policy based on profile and finding code.
 * 
 * Policy rules:
 * - missing_link_constraints:
 *   - discovery => INFO
 *   - decisioning => WARN
 * - missing_slot_*:
 *   - discovery => INFO
 *   - decisioning => WARN
 * - weak_chain_roles:
 *   - discovery => INFO
 *   - decisioning => INFO
 * - All other findings: keep base severity (no change)
 */
export function applySeverityPolicy(
  profileName: ProfileName | undefined,
  findingCode: string,
  baseSeverity: Severity
): Severity {
  // If no profile specified, use base severity
  if (!profileName) {
    return baseSeverity;
  }

  // missing_link_constraints
  if (findingCode === "missing_link_constraints") {
    return profileName === "decisioning" ? "warn" : "info";
  }

  // missing_slot_*
  if (findingCode.startsWith("missing_slot_")) {
    return profileName === "decisioning" ? "warn" : "info";
  }

  // weak_chain_roles
  if (findingCode === "weak_chain_roles") {
    return "info"; // Always INFO for both profiles
  }

  // All other findings: keep base severity
  return baseSeverity;
}