import { Link } from "react-router-dom";
import { AlarmClock, ChevronDown, Pencil, TriangleAlert, Building2, Package, CreditCard, Check } from "lucide-react";
import type { Quote, Store } from "../../lib/types";
import {
  isExpired,
  itemsSummary,
  materialById,
  materialLabel,
  projectCell,
  quoteTotal,
  supplierById,
  termsheetSummary,
  unitWarning,
} from "../../lib/quoteUtils";
import { STATUS_LABEL } from "../../lib/constants";
import { esc, fmtDate, fmtDateTime, fmtNum, priceCell } from "../../lib/formatters";
import { Badge } from "../../components/ui/badge";
import { cn } from "../../lib/utils";
import { QuoteDetail } from "./QuoteDetail";

export interface QuoteCardProps {
  store: Store;
  q: Quote;
  expanded: boolean;
  onToggleExpand: () => void;
  onAccept: () => void;
  onEdit: () => void;
}

function InfoCell({ label, children, className }: { label: string; children: React.ReactNode; className?: string }) {
  return (
    <div className={cn("min-w-0", className)}>
      <div className="mb-0.5 text-[10px] font-semibold text-muted sm:text-[10.5px]">{label}</div>
      <div className="min-w-0 text-xs leading-5 text-ink sm:text-[13px] sm:leading-6">{children}</div>
    </div>
  );
}

// کارت پیشنهاد خرید — بهینه‌شده برای کاربری سرپا با موبایل
export function QuoteCard({ store, q, expanded, onToggleExpand, onAccept, onEdit }: QuoteCardProps) {
  const sup = supplierById(store.suppliers, q.supplier_id);
  const expired = isExpired(q);
  const total = quoteTotal(q);
  const pc = priceCell(total);
  const ts = termsheetSummary(store, q);
  const unitWarns = unitWarning(store, q);
  const summary = itemsSummary(store, q);

  // ستون / دکمه پذیرش
  let acceptedCell: React.ReactNode;
  if (q.status === "offered") {
    acceptedCell = (
      <button
        onClick={onAccept}
        className="inline-flex h-7 items-center justify-center gap-1 rounded-md bg-emerald-600 px-2.5 text-xs font-bold text-white shadow-xs active:scale-95 transition-transform"
      >
        <Check className="h-3.5 w-3.5" />
        <span>پذیرش</span>
      </button>
    );
  } else if (q.accepted_date) {
    acceptedCell = <span className="tabular-nums font-medium">{fmtDateTime(q.accepted_date)}</span>;
  } else {
    acceptedCell = <span className="text-muted">—</span>;
  }

  // وضعیت رسید کالا
  const activeItems = (q.line_items || []).filter((li) => !li.rejected);
  const receivedSum = activeItems.reduce((s, li) => s + (li.received_qty || 0), 0);
  const orderedSum = activeItems.reduce((s, li) => s + (li.quantity || 0), 0);
  const fulfilledItems = activeItems.filter(
    (li) => li.quantity != null && li.quantity > 0 && (li.received_qty || 0) >= li.quantity,
  ).length;
  const anyReceived = receivedSum > 0;
  const fullyDelivered = activeItems.length > 0 && fulfilledItems === activeItems.length && anyReceived;

  // نشان پیشرفت تکمیل
  let fulfillmentBadge: React.ReactNode = null;
  if (q.status === "accepted" || q.status === "arrived") {
    if (fullyDelivered || q.status === "arrived") {
      fulfillmentBadge = (
        <span className="inline-flex items-center gap-1 rounded-full border border-emerald-200 bg-emerald-50 px-2 py-0.5 text-[10.5px] font-bold text-emerald-700 sm:text-[11px]">
          ✓ تکمیل
        </span>
      );
    } else if (anyReceived) {
      fulfillmentBadge = (
        <span className="inline-flex items-center gap-1 rounded-full border border-amber-200 bg-amber-50 px-2 py-0.5 text-[10.5px] font-bold text-amber-700 sm:text-[11px]">
          رسید: {fmtNum(fulfilledItems)}/{fmtNum(activeItems.length)}
        </span>
      );
    } else {
      fulfillmentBadge = (
        <span className="inline-flex items-center gap-1 rounded-full border border-blue-200 bg-blue-50 px-2 py-0.5 text-[10.5px] font-bold text-blue-700 sm:text-[11px]">
          ⏳ در راه
        </span>
      );
    }
  }

  let arrivedCell: React.ReactNode;
  const lastReceiptAt = activeItems.reduce<Date | null>((acc, li) => {
    if (!li.arrived_date) return acc;
    const t = new Date(li.arrived_date).getTime();
    if (Number.isNaN(t)) return acc;
    return !acc || t > acc.getTime() ? new Date(li.arrived_date) : acc;
  }, null);

  if (q.status === "accepted") {
    if (q.arrived_date) {
      arrivedCell = <span className="tabular-nums">{fmtDateTime(q.arrived_date)}</span>;
    } else if (receivedSum > 0) {
      arrivedCell = (
        <span className="tabular-nums">
          {fmtNum(receivedSum)} از {fmtNum(orderedSum)}
        </span>
      );
    } else {
      arrivedCell = <span className="text-muted">در انتظار انبار</span>;
    }
  } else if (q.status === "arrived") {
    arrivedCell = (
      <span className="tabular-nums">
        {fmtDateTime(q.arrived_date || (lastReceiptAt ? lastReceiptAt.toISOString() : ""))}
      </span>
    );
  } else {
    arrivedCell = <span className="text-muted">—</span>;
  }

  return (
    <div
      className={cn(
        "overflow-hidden rounded-xl border bg-panel transition-colors shadow-2xs sm:rounded-lg",
        expired ? "border-amber/40" : "border-line hover:border-accent/40",
        expanded && "border-accent/60 ring-1 ring-accent/20",
      )}
    >
      {/* سربرگ کارت */}
      <div className="flex items-center gap-2.5 border-b border-line bg-bg/40 px-3 py-2 sm:gap-3 sm:px-4 sm:py-2.5">
        <span className="flex h-8 w-8 shrink-0 items-center justify-center rounded-lg bg-accent-bg text-xs font-bold text-accent-dark sm:h-9 sm:w-9 sm:text-sm">
          {sup.name.slice(0, 1)}
        </span>
        <div className="min-w-0 flex-1">
          <Link
            to={`/suppliers/${q.supplier_id}`}
            className="block truncate text-xs font-bold text-ink no-underline hover:text-accent sm:text-[13.5px]"
          >
            {sup.name}
          </Link>
          {sup.location && <div className="truncate text-[10px] text-muted sm:text-[11px]">{sup.location}</div>}
        </div>
        <div className="ms-auto flex shrink-0 items-center gap-1 sm:gap-1.5">
          {fulfillmentBadge ?? (
            <Badge variant={q.status as "offered" | "accepted" | "arrived"} className="text-[10px] sm:text-xs">
              {STATUS_LABEL[q.status]}
            </Badge>
          )}
          <button
            className="chip h-7 px-2 sm:h-auto sm:px-2.5"
            onClick={onEdit}
            title="ویرایش پیشنهاد"
            aria-label="ویرایش"
          >
            <Pencil className="h-3 w-3" />
            <span className="hidden sm:inline">ویرایش</span>
          </button>
          <button
            className="chip chip-expand h-7 w-7 p-0 sm:h-auto sm:w-auto sm:p-1.5"
            onClick={onToggleExpand}
            title={expanded ? "جمع کردن" : "نمایش جزئیات"}
            aria-expanded={expanded}
          >
            <ChevronDown className={cn("h-4 w-4 transition-transform duration-200", expanded && "rotate-180")} />
          </button>
        </div>
      </div>

      {/* اطلاعات کلیدی — چیدمان بهینه‌شده موبایل */}
      <div className="grid grid-cols-2 gap-x-3 gap-y-3 p-3 sm:gap-x-5 sm:gap-y-3.5 sm:p-4 md:grid-cols-4">
        {/* ۱. پروژه — تمام‌عرض در موبایل */}
        <InfoCell label="پروژه" className="col-span-2 md:col-span-1">
          <div className="flex items-center gap-1.5 text-xs font-semibold text-ink sm:text-[13px]">
            <Building2 className="h-3.5 w-3.5 shrink-0 text-muted" />
            <span className="truncate">
              {q.projects && q.projects.length > 0 ? q.projects.join("، ") : projectCell(q)}
            </span>
          </div>
        </InfoCell>

        {/* ۲. اقلام — تمام‌عرض زیر پروژه با شکستن متن بدون سه‌نقطه */}
        <InfoCell label="اقلام" className="col-span-2 md:col-span-1">
          {summary.count > 1 ? (
            <div className="flex flex-col gap-1.5">
              <span className="font-bold text-xs text-ink sm:text-sm">
                {fmtNum(summary.count)} قلم کالا
              </span>
              <div className="flex flex-col gap-1.5 rounded-lg border border-line/60 bg-bg/50 p-2.5 text-[11px] leading-5 text-muted sm:text-[11.5px]">
                {store.quotes
                  .find((x) => x.id === q.id)
                  ?.line_items?.filter((li) => !li.rejected)
                  .slice(0, 3)
                  .map((li) => {
                    const m = materialById(store.materials, li.material_id);
                    return (
                      <div
                        key={li.id}
                        className="flex items-start justify-between gap-2 border-b border-line/30 pb-1.5 last:border-0 last:pb-0"
                      >
                        <span className="min-w-0 flex-1 font-medium text-ink leading-snug break-words">
                          • {materialLabel(m)}
                        </span>
                        <span className="shrink-0 font-semibold tabular-nums text-ink text-[10.5px] pt-0.5">
                          {fmtNum(li.quantity)}{" "}
                          <span className="font-normal text-muted text-[9.5px]">{li.unit}</span>
                        </span>
                      </div>
                    );
                  })}
                {(q.line_items?.length || 0) > 3 && (
                  <span className="pt-0.5 text-[10px] text-muted">
                    و {(q.line_items?.length || 0) - 3} قلم دیگر...
                  </span>
                )}
              </div>
            </div>
          ) : (
            <div className="flex items-start gap-1.5 text-xs font-medium leading-5 text-ink sm:text-[13px]">
              <span className="break-words">{summary.text}</span>
            </div>
          )}

          {unitWarns.map((w) => (
            <Link
              key={w.unit}
              to={`/units?cat=${encodeURIComponent(w.cat)}&unit=${encodeURIComponent(w.unit)}`}
              className="unit-warn mt-1 inline-flex items-center gap-1 text-[10px]"
              title={`ضریب تبدیل «${esc(w.unit)}» را در داشبورد واحدها ثبت کنید`}
            >
              <TriangleAlert className="h-2.5 w-2.5 shrink-0" />
              واحد جدید: {w.unit}
            </Link>
          ))}
        </InfoCell>

        <InfoCell label="پروژه">
          <span className="inline-flex items-center gap-1 text-xs sm:text-[13px]">
            <Building2 className="h-3.5 w-3.5 shrink-0 text-muted" />
            <span className="truncate">
              {(() => {
                const activeItems = (q.line_items || []).filter((li) => !li.rejected);
                if (q.status === "accepted" || q.status === "arrived") {
                  // فقط پروژه‌ی هدف پذیرفته‌شده — همان منطق itemProjects در وضعیت accepted
                  const targetProj = activeItems.find((li) => li.target_project)?.target_project;
                  return targetProj?.name ?? projectCell(q);
                }
                // وضعیت offered: همه‌ی پروژه‌های کاندیدا از line_items (همان منطق itemProjects)
                const names = new Set<string>();
                activeItems.forEach((li) =>
                  (li.projects || []).forEach((p) => {
                    const name = typeof p === "string" ? p : p.name;
                    if (name) names.add(name);
                  })
                );
                if (names.size > 0) return [...names].join("، ");
                return projectCell(q);
              })()}
            </span>
          </span>
        </InfoCell>

        <InfoCell label="مجموع مبلغ" className="col-span-1">
          {pc ? (
            <div>
              <div className="text-sm font-extrabold tabular-nums text-ink sm:text-base">
                {pc.num} <span className="text-[10px] font-normal text-muted sm:text-xs">تومان</span>
              </div>
              <div className="hidden text-[11px] text-muted sm:block">({pc.words})</div>
            </div>
          ) : (
            "—"
          )}
        </InfoCell>

        {/* ۴. شرایط معامله */}
        <InfoCell label="شرایط معامله" className="col-span-1">
          {ts.title !== "—" ? (
            <div>
              <div className="text-xs font-semibold sm:text-[13px]" style={ts.color ? { color: ts.color } : undefined}>
                {ts.title}
              </div>
              {ts.sub && <div className="truncate text-[10px] text-muted sm:text-[11px]">{ts.sub}</div>}
            </div>
          ) : (
            <span className="text-muted">—</span>
          )}
        </InfoCell>
      </div>

      {/* تاریخ‌ها و اکشن‌ها */}
      <div className="grid grid-cols-2 gap-2 border-t border-line bg-bg/40 p-2.5 text-[11px] text-muted sm:flex sm:flex-wrap sm:items-center sm:gap-x-5 sm:gap-y-2 sm:px-4 sm:py-2 sm:text-[11.5px]">
        <span className="inline-flex items-center gap-1.5 truncate">
          <Package className="h-3 w-3 shrink-0" />
          <span>تاریخ:</span>
          <b className="tabular-nums text-ink">{fmtDate(q.quote_date)}</b>
        </span>

        <span className="inline-flex items-center gap-1.5 truncate">
          <CreditCard className="h-3 w-3 shrink-0" />
          <span>اعتبار:</span>
          <b className={cn("tabular-nums", expired ? "text-amber" : "text-ink")}>
            {fmtDate(q.expiry_date)}
          </b>
          {expired && <AlarmClock className="h-3 w-3 shrink-0 text-amber" aria-label="منقضی" />}
        </span>

        <span className="inline-flex items-center gap-1.5">
          <span>پذیرش:</span>
          {acceptedCell}
        </span>

        <span className="inline-flex items-center gap-1.5 truncate">
          <span>رسید:</span>
          {arrivedCell}
        </span>
      </div>

      {/* جزئیات تکمیلی بازشونده */}
      {expanded && <QuoteDetail store={store} q={q} />}
    </div>
  );
}