"use client";

import { P1_RESULT_UI } from "@/lib/priority1/ui-labels";
import type { Priority1DisplayLine } from "@/modules/priority1/quote-storage";

type Props = {
  lines: Priority1DisplayLine[];
};

function carrierInitials(carrier: string): string {
  const parts = carrier.trim().split(/\s+/).filter(Boolean);
  if (parts.length >= 2) {
    return (parts[0]![0]! + parts[1]![0]!).toUpperCase();
  }
  return carrier.slice(0, 2).toUpperCase();
}

function formatUsd(n: number): string {
  return new Intl.NumberFormat("en-US", {
    style: "currency",
    currency: "USD",
    minimumFractionDigits: 2,
  }).format(n);
}

function formatDisplayDate(raw?: string | null): string {
  if (!raw) return P1_RESULT_UI.dateUnknown;
  const trimmed = raw.trim();
  const dash = trimmed.match(/^(\d{2})-(\d{2})-(\d{4})$/);
  if (dash) return `${dash[1]}-${dash[2]}-${dash[3]}`;
  const slash = trimmed.match(/^(\d{2})\/(\d{2})\/(\d{4})$/);
  if (slash) return `${slash[1]}-${slash[2]}-${slash[3]}`;
  const iso = trimmed.match(/^(\d{4})-(\d{2})-(\d{2})/);
  if (iso) return `${iso[2]}-${iso[3]}-${iso[1]}`;
  return trimmed;
}

function transitLabel(days?: number): string {
  if (days == null || days <= 0) return P1_RESULT_UI.transitUnknown;
  return P1_RESULT_UI.transit(days);
}

function serviceLabel(level?: string): string {
  if (!level?.trim()) return P1_RESULT_UI.standardLtl;
  if (/standard\s*ltl/i.test(level)) return P1_RESULT_UI.standardLtl;
  return level;
}

function QuoteCard({ line }: { line: Priority1DisplayLine }) {
  const displayUsd = line.totalUsd > 0 ? line.totalUsd : line.final_total_usd;

  return (
    <article className="flex overflow-hidden rounded border border-neutral-700 bg-neutral-900">
      <div className="flex w-[34%] min-w-[140px] flex-col items-center justify-center gap-3 bg-neutral-800 px-4 py-6">
        <div className="flex h-16 w-16 items-center justify-center rounded bg-white text-lg font-bold text-neutral-900">
          {carrierInitials(line.carrier)}
        </div>
        <p className="text-3xl font-bold tracking-tight text-[#f5d000]">
          {formatUsd(displayUsd)}
        </p>
      </div>
      <div className="flex flex-1 flex-col gap-3 p-5">
        <div className="flex items-start justify-between gap-3">
          <div className="flex items-center gap-2">
            <h3 className="text-sm font-bold tracking-wide text-white">
              {serviceLabel(line.serviceLevel)}
            </h3>
            <span
              className="inline-flex h-4 w-4 items-center justify-center rounded-full border border-neutral-500 text-[10px] text-neutral-300"
              title="服务说明"
              aria-hidden
            >
              i
            </span>
          </div>
          <span className="rounded bg-neutral-800 px-2 py-0.5 text-[10px] font-semibold tracking-wider text-neutral-300">
            {P1_RESULT_UI.quoteBadge(line.rank)}
          </span>
        </div>
        <div className="flex flex-wrap items-baseline justify-between gap-2">
          <p className="text-base text-white">{line.carrier}</p>
          <p className="text-sm text-neutral-300">{transitLabel(line.transitDays)}</p>
        </div>
        <div className="space-y-1 text-sm text-neutral-300">
          <p>
            {P1_RESULT_UI.expiration}：{formatDisplayDate(line.expirationDate)}
          </p>
          <p>
            {P1_RESULT_UI.delivery}：{formatDisplayDate(line.deliveryDate)}
          </p>
        </div>
      </div>
    </article>
  );
}

export function Priority1LtlQuoteOptions({ lines }: Props) {
  const sorted = [...lines].sort((a, b) => a.rank - b.rank);

  return (
    <div className="space-y-5 bg-black p-6 text-white">
      <h2 className="text-2xl font-bold tracking-wide">{P1_RESULT_UI.title}</h2>
      <div className="rounded border border-neutral-800 bg-neutral-900/80 p-4 text-sm leading-relaxed text-neutral-300">
        {P1_RESULT_UI.intro}
      </div>
      <div className="space-y-4">
        {sorted.map((line) => (
          <QuoteCard key={`${line.rank}-${line.carrier}-${line.totalUsd}`} line={line} />
        ))}
      </div>
    </div>
  );
}