import type { OrganizerTrust } from "@/server/services/trust.service";

interface OrganizerStatsPanelProps {
  trust: OrganizerTrust;
}

/**
 * Panel reputasi organizer untuk halaman profil publik /u/[id].
 * Tidak render kalau user belum punya history sebagai organizer.
 */
export function OrganizerStatsPanel({ trust }: OrganizerStatsPanelProps) {
  const {
    isVerified,
    isTripLeader,
    tripsCreated,
    tripsCompleted,
    totalParticipantsServed,
    completionRate,
    avgRating,
    reviewCount,
    ratingBreakdown,
  } = trust;

  if (tripsCreated === 0 && reviewCount === 0 && !isVerified) {
    return null;
  }

  const maxBreakdown = Math.max(
    ratingBreakdown[1],
    ratingBreakdown[2],
    ratingBreakdown[3],
    ratingBreakdown[4],
    ratingBreakdown[5],
    1
  );

  return (
    <section className="mt-5 rounded-2xl border border-neutral-200 bg-white p-5 shadow-sm sm:p-6">
      <h2 className="mb-3 text-sm font-bold text-neutral-700 sm:text-base">
        Reputasi sebagai organizer
      </h2>

      {(isVerified || isTripLeader) && (
        <div className="mb-4 flex flex-wrap gap-2">
          {isVerified && (
            <span
              className="inline-flex items-center gap-1 rounded-full bg-primary-100 px-2.5 py-0.5 text-[11px] font-bold uppercase tracking-wide text-primary-800"
              title="Identitas organizer telah diverifikasi (KTP & rekening)"
            >
              ✅ Verified Organizer
            </span>
          )}
          {isTripLeader && (
            <span className="inline-flex items-center rounded-full bg-secondary-100 px-2.5 py-0.5 text-[11px] font-bold uppercase tracking-wide text-secondary-900">
              Trip leader
            </span>
          )}
        </div>
      )}

      <div className="grid grid-cols-2 gap-2.5 sm:grid-cols-4">
        <Stat
          label="Trip selesai"
          value={tripsCompleted.toString()}
          tone="primary"
        />
        <Stat
          label="Peserta dilayani"
          value={totalParticipantsServed.toString()}
          tone="secondary"
        />
        <Stat
          label="Completion rate"
          value={
            completionRate != null
              ? `${Math.round(completionRate * 100)}%`
              : "—"
          }
          subtitle={
            completionRate == null ? "Belum cukup data" : undefined
          }
          tone="neutral"
        />
        <Stat
          label="Rating"
          value={avgRating != null ? `${avgRating} ★` : "—"}
          subtitle={
            reviewCount > 0
              ? `${reviewCount} ulasan`
              : "Belum ada ulasan"
          }
          tone="amber"
        />
      </div>

      {reviewCount > 0 && (
        <div className="mt-4 border-t border-neutral-100 pt-4">
          <h3 className="mb-2 text-xs font-semibold text-neutral-600">
            Distribusi rating
          </h3>
          <div className="space-y-1.5">
            {([5, 4, 3, 2, 1] as const).map((star) => {
              const count = ratingBreakdown[star];
              const percent = (count / maxBreakdown) * 100;
              return (
                <div
                  key={star}
                  className="flex items-center gap-2 text-xs"
                >
                  <span className="w-8 shrink-0 font-medium text-neutral-600">
                    {star} ★
                  </span>
                  <div className="h-2 flex-1 overflow-hidden rounded-full bg-neutral-100">
                    <div
                      className="h-full rounded-full bg-amber-400 transition-all"
                      style={{ width: `${percent}%` }}
                    />
                  </div>
                  <span className="w-8 shrink-0 text-right text-neutral-500">
                    {count}
                  </span>
                </div>
              );
            })}
          </div>
        </div>
      )}
    </section>
  );
}

const TONE_CLASSES = {
  primary: { bg: "bg-primary-50", value: "text-primary-700" },
  secondary: { bg: "bg-secondary-50", value: "text-secondary-700" },
  neutral: { bg: "bg-neutral-50", value: "text-neutral-800" },
  amber: { bg: "bg-amber-50", value: "text-amber-700" },
} as const;

interface StatProps {
  label: string;
  value: string;
  subtitle?: string;
  tone: keyof typeof TONE_CLASSES;
}

function Stat({ label, value, subtitle, tone }: StatProps) {
  const cls = TONE_CLASSES[tone];
  return (
    <div className={`rounded-xl px-3 py-2.5 ${cls.bg}`}>
      <p className="text-[10px] font-medium uppercase tracking-wide text-neutral-500 sm:text-[11px]">
        {label}
      </p>
      <p className={`mt-0.5 text-lg font-bold sm:text-xl ${cls.value}`}>
        {value}
      </p>
      {subtitle && (
        <p className="text-[10px] text-neutral-400">{subtitle}</p>
      )}
    </div>
  );
}