update seatMap

frontend-client/src/components/SeatMap.tsx

@@ -0,0 +1,251 @@
+"use client";
+
+import { useCallback, useMemo, useState } from "react";
+import type { AxiosError } from "axios";
+import { useCartStore } from "@/store/cartStore";
+import { useAuthStore } from "@/store/authStore";
+import { lockSeatApi, type Seat } from "@/api/client";
+
+// ─── Grouping ─────────────────────────────────────────────────────────────────
+
+/**
+ * Groups seats into sector → row → sorted seats[].
+ * Sectors are sorted VIP-first, then alphabetically.
+ */
+function groupSeats(seats: Seat[]): Map<string, Map<number, Seat[]>> {
+  const result = new Map<string, Map<number, Seat[]>>();
+
+  for (const seat of seats) {
+    if (!result.has(seat.sector)) result.set(seat.sector, new Map());
+    const rowMap = result.get(seat.sector)!;
+    if (!rowMap.has(seat.row)) rowMap.set(seat.row, []);
+    rowMap.get(seat.row)!.push(seat);
+  }
+
+  return new Map(
+    Array.from(result.entries()).sort(([a], [b]) => {
+      if (a === "VIP") return -1;
+      if (b === "VIP") return 1;
+      return a.localeCompare(b, "ru");
+    })
+  );
+}
+
+// ─── Component ────────────────────────────────────────────────────────────────
+
+interface SeatMapProps {
+  seats: Seat[];
+}
+
+export default function SeatMap({ seats }: SeatMapProps) {
+  const { seats: cartSeats, addSeat, removeSeat } = useCartStore();
+
+  const selectedIds = useMemo(
+    () => new Set(cartSeats.map((s) => s.seatId)),
+    [cartSeats]
+  );
+
+  // Seats marked unavailable locally after a 409 race-condition response
+  const [localLocked, setLocalLocked] = useState<Set<number>>(new Set());
+
+  // Prevents concurrent lock requests — only one seat at a time
+  const [pendingId, setPendingId] = useState<number | null>(null);
+
+  // Toast
+  const [toastMsg, setToastMsg] = useState<string | null>(null);
+
+  function showToast(msg: string) {
+    setToastMsg(msg);
+    setTimeout(() => setToastMsg(null), 3200);
+  }
+
+  const handleSeatClick = useCallback(
+    async (seat: Seat) => {
+      const isUnavailable = seat.status !== "AVAILABLE" || localLocked.has(seat.id);
+      if (isUnavailable || pendingId !== null) return;
+
+      // Deselect: remove from cart without an API call
+      if (selectedIds.has(seat.id)) {
+        removeSeat(seat.id);
+        return;
+      }
+
+      const userId = useAuthStore.getState().user?.id ?? 1;
+      setPendingId(seat.id);
+
+      try {
+        const { ticketId } = await lockSeatApi(seat.id, userId);
+        addSeat({
+          seatId: seat.id,
+          ticketId,
+          sector: seat.sector,
+          row: seat.row,
+          number: seat.number,
+          price: seat.price,
+        });
+      } catch (err) {
+        const axiosErr = err as AxiosError;
+        setLocalLocked((prev) => {
+          const next = new Set(prev);
+          next.add(seat.id);
+          return next;
+        });
+        showToast(
+          axiosErr.response?.status === 409
+            ? "Место только что заняли, выберите другое"
+            : "Ошибка сети. Попробуйте ещё раз"
+        );
+      } finally {
+        setPendingId(null);
+      }
+    },
+    [localLocked, pendingId, selectedIds, addSeat, removeSeat]
+  );
+
+  const grouped = useMemo(() => groupSeats(seats), [seats]);
+
+  // ── Empty state ──
+  if (seats.length === 0) {
+    return (
+      <div className="flex flex-col items-center justify-center py-16 px-6 text-center gap-3">
+        <div className="w-14 h-14 rounded-2xl bg-[#1C1C1E] flex items-center justify-center">
+          <svg viewBox="0 0 24 24" fill="none" className="w-7 h-7 text-[#8E8E93]">
+            <rect x="3" y="3" width="18" height="18" rx="2" stroke="currentColor" strokeWidth="1.5" />
+            <path d="M9 9h6M9 12h6M9 15h4" stroke="currentColor" strokeWidth="1.5" strokeLinecap="round" />
+          </svg>
+        </div>
+        <p className="text-[15px] font-semibold text-white">Схема зала пока не сформирована</p>
+        <p className="text-[12px] text-[#8E8E93]">Администратор ещё не добавил места для этого события</p>
+      </div>
+    );
+  }
+
+  return (
+    <div className="relative space-y-3 px-4 pb-2">
+
+      {/* ── Toast notification ── */}
+      <div
+        aria-live="polite"
+        aria-atomic="true"
+        className={`fixed top-14 left-1/2 -translate-x-1/2 z-50 transition-all duration-300 pointer-events-none ${
+          toastMsg ? "opacity-100 translate-y-0" : "opacity-0 -translate-y-2"
+        }`}
+      >
+        <div className="flex items-center gap-2 bg-[#1C1C1E] border border-[#E32636]/50 text-white text-[12px] font-medium px-4 py-2 rounded-full shadow-xl whitespace-nowrap">
+          <span className="w-2 h-2 rounded-full bg-[#E32636] flex-shrink-0" />
+          {toastMsg}
+        </div>
+      </div>
+
+      {/* ── Sector blocks ── */}
+      {Array.from(grouped.entries()).map(([sector, rowMap]) => {
+        const sectorSeats = seats.filter((s) => s.sector === sector);
+        const availableCount = sectorSeats.filter(
+          (s) => s.status === "AVAILABLE" && !localLocked.has(s.id)
+        ).length;
+        const pricePerSeat = sectorSeats[0]?.price ?? 0;
+
+        return (
+          <div key={sector} className="bg-[#1C1C1E] rounded-2xl p-4">
+
+            {/* Sector header */}
+            <div className="flex items-center justify-between mb-3">
+              <div className="flex items-center gap-2">
+                <span className="text-[13px] font-bold text-white uppercase tracking-wider">
+                  {sector}
+                </span>
+                <span className="text-[11px] font-semibold text-[#E32636]">
+                  {pricePerSeat.toLocaleString("ru-RU")} ₽
+                </span>
+              </div>
+              <span className="text-[11px] text-[#8E8E93]">
+                {availableCount} свободно
+              </span>
+            </div>
+
+            {/* Rows */}
+            <div className="space-y-1.5">
+              {Array.from(rowMap.entries())
+                .sort(([a], [b]) => a - b)
+                .map(([row, rowSeats]) => (
+                  <div key={row} className="flex items-center gap-2">
+
+                    {/* Row number label */}
+                    <span className="text-[10px] text-[#4B5563] w-5 flex-shrink-0 text-right font-mono select-none">
+                      {row}
+                    </span>
+
+                    {/* Seat buttons */}
+                    <div className="flex gap-1 flex-wrap">
+                      {rowSeats
+                        .sort((a, b) => a.number - b.number)
+                        .map((seat) => {
+                          const isSelected  = selectedIds.has(seat.id);
+                          const isPending   = pendingId === seat.id;
+                          const isUnavailable =
+                            seat.status !== "AVAILABLE" || localLocked.has(seat.id);
+
+                          // Build class list
+                          let cls =
+                            "w-7 h-7 rounded-lg text-[10px] font-bold transition-all select-none ";
+
+                          if (isPending) {
+                            cls += "bg-[#4B5563] text-[#94A3B8] animate-pulse cursor-wait";
+                          } else if (isSelected) {
+                            cls += "bg-[#E32636] text-white scale-110 shadow-md shadow-red-900/40";
+                          } else if (isUnavailable) {
+                            cls += "bg-[#2C2C2E] text-[#4B5563] opacity-50 cursor-not-allowed";
+                          } else {
+                            cls +=
+                              "bg-[#0891B2] hover:bg-[#0E7490] hover:scale-105 active:scale-95 text-white cursor-pointer";
+                          }
+
+                          return (
+                            <button
+                              key={seat.id}
+                              onClick={() => { void handleSeatClick(seat); }}
+                              disabled={isUnavailable || (pendingId !== null && !isPending)}
+                              aria-label={
+                                isUnavailable
+                                  ? `Место ${seat.number} — недоступно`
+                                  : `${seat.sector} Р${seat.row} М${seat.number} — ${seat.price.toLocaleString("ru-RU")} ₽`
+                              }
+                              aria-pressed={isSelected}
+                              title={`${seat.sector} · Ряд ${seat.row} · Место ${seat.number}${
+                                isUnavailable ? " (занято)" : ` — ${seat.price.toLocaleString("ru-RU")} ₽`
+                              }`}
+                              className={cls}
+                            >
+                              {seat.number}
+                            </button>
+                          );
+                        })}
+                    </div>
+                  </div>
+                ))}
+            </div>
+          </div>
+        );
+      })}
+
+      {/* ── Legend ── */}
+      <div className="flex gap-5 flex-wrap px-1 pt-1">
+        {[
+          { cls: "bg-[#0891B2]",  label: "Свободно" },
+          { cls: "bg-[#E32636]",  label: "Выбрано"  },
+          { cls: "bg-[#2C2C2E] opacity-50", label: "Занято" },
+        ].map(({ cls, label }) => (
+          <div key={label} className="flex items-center gap-1.5">
+            <span className={`w-3 h-3 rounded ${cls}`} />
+            <span className="text-[11px] text-[#8E8E93]">{label}</span>
+          </div>
+        ))}
+      </div>
+
+      {/* Transparent overlay blocking all clicks while a request is in flight */}
+      {pendingId !== null && (
+        <div className="absolute inset-0 z-10" style={{ cursor: "wait", pointerEvents: "all" }} />
+      )}
+    </div>
+  );
+}