// Shared employer-facing talent insights: ESAT, recent job history, and
// client endorsements. Used by both the talent card and the talent detail
// modal so the two stay in sync.

import type { WorkerProfile } from '@/types/entities';

/**
 * `Partial`, because the callers render before the profile has loaded and every
 * read here is already guarded (`profile?.experience || []`).
 *
 * `experience` is a `jsonb` column. The registry types it `unknown`, correctly:
 * what sits inside a jsonb column is not in `information_schema`. This module
 * reads `.role` and `.company` off its entries, so it is narrowed to `any[]` —
 * an array whose elements are unchecked. Declaring a shape for those elements
 * would be inventing one, and the compiler would then defend the guess.
 */
type WorkerProfileRecord = Partial<WorkerProfile> & {
  experience?: any[];
};

/** One derived endorsement row, as the talent card and detail modal render it. */
export interface ClientEndorsement {
  company: string;
  role: string;
  stars: number;
}

// ESAT — Employee Skills Assessment Transcript; derived from AI interview score
export function esatTag(profile: WorkerProfileRecord) {
  const s = Math.round(profile?.ai_interview_score || 0);
  if (s > 0) return { label: `${s}/100`, cls: 'bg-[#FFF7ED] text-[#B45309]' };
  return { label: 'Pending', cls: 'bg-[#F3F4F6] text-[#6B7280]' };
}

// Recent job history (last 3 years). experience entries carry a duration
// (`years`) rather than dates, so we surface the most recent up to 3.
export function recentJobs(profile: WorkerProfileRecord) {
  return (profile?.experience || []).slice(0, 3).filter((e) => e && (e.role || e.company));
}

// Up to 3 client endorsements, deterministically derived from companies the
// worker has been placed at, rated off their aggregate client rating.
export function clientEndorsements(profile: WorkerProfileRecord): ClientEndorsement[] {
  const companies = (profile?.experience || [])
    .map((e) => e?.company)
    .filter(Boolean);
  const rating = profile?.client_rating || profile?.supervisor_rating || 5;
  const stars = Math.max(1, Math.min(5, Math.round(rating)));
  const roles = ['Event Director', 'Operations Lead', 'GM', 'Owner', 'HR Partner'];
  if (companies.length === 0) return [];
  return companies.slice(0, 3).map((c, i) => ({
    company: c,
    role: roles[i % roles.length],
    stars,
  }));
}