import type { ProfileView } from '../types';
import React from 'react';
import { Link } from 'react-router-dom';
import { ArrowRight } from 'lucide-react';
import { getTalentScore, getMarketValue, getFactors } from '@/lib/talentHome';
import CareerScoreGauge from '@/components/krow/talent/CareerScoreGauge';

function greeting() {
  const h = new Date().getHours();
  if (h < 12) return 'Good morning';
  if (h < 18) return 'Good afternoon';
  return 'Good evening';
}

const TIERS = ['Beginner', 'Cross-Trained', 'Skilled'];
function currentTierIndex(profile: Partial<ProfileView> = {}) {
  const badges = (profile.earned_badges || []).length;
  const shifts = profile.shifts_completed || 0;
  if (badges >= 5 || shifts >= 50) return 2;
  if (badges >= 1 || shifts >= 10) return 1;
  return 0;
}
function nextPromotion(profile = {}) {
  const idx = currentTierIndex(profile);
  return TIERS[Math.min(idx + 1, TIERS.length - 1)];
}
function marketRange(profile = {}) {
  const uplift = getMarketValue(profile);
  const low = 20 + uplift;
  return `$${low}-$${low + 4}/hr`;
}

/** Props for the local `Field` helper in this file. Optional throughout:
    the JavaScript validated none of them and callers omit freely. */
interface FieldProps {
  label?: any;
  value?: any;
  sub?: any;
  accent?: any;
}

function Field({ label, value, sub = '', accent = false }: FieldProps) {
  return (
    <div>
      <p className="text-[11px] uppercase tracking-wide text-[#6B7280]">{label}</p>
      <div className="flex items-baseline gap-2">
        <p className={`text-[18px] font-semibold ${accent || 'text-[#0F172A]'}`}>{value}</p>
        {sub && <span className="text-[12px] font-medium text-[#0838E0]">{sub}</span>}
      </div>
    </div>
  );
}

function statusFor(v) {
  if (v >= 80) return { txt: 'Excellent', color: 'text-[#16A34A]', dot: 'bg-[#16A34A]' };
  if (v >= 60) return { txt: 'Good', color: 'text-[#0838E0]', dot: 'bg-[#0838E0]' };
  if (v >= 40) return { txt: 'Fair', color: 'text-[#D97706]', dot: 'bg-[#D97706]' };
  if (v > 0) return { txt: 'Poor', color: 'text-[#DC2626]', dot: 'bg-[#DC2626]' };
  return { txt: 'No data', color: 'text-[#9CA3AF]', dot: 'bg-[#D1D5DB]' };
}

/** Props for the local `Factor` helper in this file. Optional throughout:
    the JavaScript validated none of them and callers omit freely. */
interface FactorProps {
  label?: any;
  value?: any;
  weight?: any;
}

function Factor({ label, value, weight }: FactorProps) {
  const s = statusFor(value);
  return (
    <div className="flex items-center gap-3 py-2">
      <span className={`w-2 h-2 rounded-full shrink-0 ${s.dot}`} />
      <div className="flex-1 min-w-0">
        <div className="flex items-center justify-between">
          <span className="text-[13px] font-medium text-[#0F172A] truncate">{label}</span>
          <span className="text-[11px] text-[#9CA3AF]">{weight}% weight</span>
        </div>
        <div className="h-1.5 bg-[#F3F4F6] rounded-full mt-1.5 overflow-hidden">
          <div className="h-full bg-[#93C5FD] rounded-full" style={{ width: `${value}%` }} />
        </div>
      </div>
      <span className={`text-[12px] font-semibold w-20 text-right ${s.color}`}>{s.txt}</span>
    </div>
  );
}

interface TalentHeroProps {
  profile: ProfileView;
  /**
   * Passed by `EmployeeDashboard`, ignored by this component.
   *
   * The signature destructures `_jobRecs` — the underscore marking it
   * deliberately unused — so the prop the caller sends never binds to anything.
   * Declared here because the caller does send it, and an excess-property error
   * would be TypeScript objecting to a prop JavaScript simply dropped.
   */
  jobRecs?: any;
  _jobRecs?: any;
  nextCourse?: any;
  openOwliver?: any;
}

export default function TalentHero({ profile, _jobRecs = [], nextCourse = null, openOwliver = null }: TalentHeroProps) {
  const score = getTalentScore(profile);
  const factors = getFactors(profile);
  const first = (profile.full_name || 'there').split(' ')[0];
  const incomplete = score === 0 && !(profile.skills || []).length;

  const missionGain = nextCourse ? Math.max(1, Math.round((nextCourse.xp || 100) / 20)) : 0;
  const mission = nextCourse
    ? { label: nextCourse.title, sub: `+${missionGain} Score`, to: `/university/${nextCourse.id}` }
    : incomplete
      ? { label: 'Build your profile with Owliver', sub: 'Start your KROW Identity', action: openOwliver }
      : { label: 'Browse missions', sub: 'Keep leveling up', to: '/university' };

  const StartButton = mission.to ? (
    <Link to={mission.to} className="inline-flex items-center gap-2 bg-[#0838E0] text-white text-[13px] font-bold px-5 py-2.5 rounded-full hover:bg-[#062BAF] transition-colors">
      START NOW <ArrowRight className="w-4 h-4" />
    </Link>
  ) : (
    <button onClick={mission.action} className="inline-flex items-center gap-2 bg-[#0838E0] text-white text-[13px] font-bold px-5 py-2.5 rounded-full hover:bg-[#062BAF] transition-colors">
      START NOW <ArrowRight className="w-4 h-4" />
    </button>
  );

  return (
    <div className="relative rounded-2xl bg-white border border-[#E5E7EB] p-6 sm:p-8 space-y-6">
      <h1 className="text-[24px] font-bold text-[#0F172A] tracking-tight">{greeting()}, {first}</h1>

      <div className="grid grid-cols-1 sm:grid-cols-3 gap-5 items-center">
        <CareerScoreGauge profile={profile} />
        <div className="space-y-4 sm:col-span-2">
          <Field label="Potential Market Value" value={marketRange(profile)} />
          <Field label="Next Promotion" value={nextPromotion(profile)} />
        </div>
      </div>

      <div className="pt-4 border-t border-[#E5E7EB]">
        <div className="flex items-center justify-between mb-2">
          <h2 className="text-[15px] font-bold text-[#0F172A]">What's Driving Your Score</h2>
          <span className="text-[11px] text-[#9CA3AF]">Updated this month</span>
        </div>
        <div className="grid grid-cols-1 sm:grid-cols-2 gap-x-8">
          {factors.map((f) => <Factor key={f.key} label={f.label} value={f.value} weight={f.weight} />)}
        </div>
      </div>

      <div className="pt-4 border-t border-[#E5E7EB] space-y-3">
        <Field label="Today" value={mission.label} sub={mission.sub} />
        <div>{StartButton}</div>
      </div>
    </div>
  );
}