"use client";

import { useState, useEffect } from "react";
import { createPortal } from "react-dom";
import { Loader2, Trash2, Phone, Instagram, Send, X } from "lucide-react";
import { type BookingStatus, type BookingFilter, BOOKING_STATUSES } from "./types";

export function LoadingSpinner() {
  return (
    <div className="flex items-center gap-2 py-8 text-neutral-500 justify-center">
      <Loader2 size={16} className="animate-spin" />
      Загрузка...
    </div>
  );
}

export function EmptyState({ total }: { total: number }) {
  return (
    <p className="text-sm text-neutral-500 py-8 text-center">
      {total === 0 ? "Пока нет записей" : "Нет записей по фильтру"}
    </p>
  );
}

// --- #1: Delete with confirmation ---

export function DeleteBtn({ onClick, name }: { onClick: () => void; name?: string }) {
  const [confirming, setConfirming] = useState(false);

  useEffect(() => {
    if (!confirming) return;
    function onKey(e: KeyboardEvent) { if (e.key === "Escape") setConfirming(false); }
    document.addEventListener("keydown", onKey);
    return () => document.removeEventListener("keydown", onKey);
  }, [confirming]);

  return (
    <>
      <button
        type="button"
        onClick={() => setConfirming(true)}
        className="rounded p-1 text-neutral-500 hover:text-red-400 transition-colors"
        title="Удалить"
      >
        <Trash2 size={14} />
      </button>
      {confirming && createPortal(
        <div className="fixed inset-0 z-50 flex items-center justify-center p-4" onClick={() => setConfirming(false)}>
          <div className="absolute inset-0 bg-black/70 backdrop-blur-sm" />
          <div className="relative w-full max-w-xs rounded-2xl border border-white/[0.08] bg-[#0a0a0a] p-5 shadow-2xl" onClick={(e) => e.stopPropagation()}>
            <button onClick={() => setConfirming(false)} className="absolute right-3 top-3 flex h-7 w-7 items-center justify-center rounded-full text-neutral-500 hover:bg-white/[0.06] hover:text-white">
              <X size={16} />
            </button>
            <h3 className="text-sm font-bold text-white">Удалить запись?</h3>
            {name && <p className="mt-1 text-xs text-neutral-400">{name}</p>}
            <p className="mt-2 text-xs text-neutral-500">Это действие нельзя отменить.</p>
            <div className="mt-4 flex gap-2">
              <button
                onClick={() => setConfirming(false)}
                className="flex-1 rounded-lg border border-white/10 bg-neutral-800 py-2 text-xs font-medium text-neutral-300 hover:bg-neutral-700 transition-colors"
              >
                Отмена
              </button>
              <button
                onClick={() => { setConfirming(false); onClick(); }}
                className="flex-1 rounded-lg bg-red-600 py-2 text-xs font-medium text-white hover:bg-red-500 transition-colors"
              >
                Удалить
              </button>
            </div>
          </div>
        </div>,
        document.body
      )}
    </>
  );
}

export function ContactLinks({ phone, instagram, telegram }: { phone?: string; instagram?: string; telegram?: string }) {
  return (
    <>
      {phone && (
        <a href={`tel:${phone.replace(/\D/g, "")}`} className="inline-flex items-center gap-1 text-emerald-400 hover:text-emerald-300 text-xs">
          <Phone size={10} />{phone}
        </a>
      )}
      {instagram && (
        <a href={`https://ig.me/m/${instagram.replace(/^@/, "")}`} target="_blank" rel="noopener noreferrer" className="inline-flex items-center gap-1 text-pink-400 hover:text-pink-300 text-xs">
          <Instagram size={10} />{instagram}
        </a>
      )}
      {telegram && (
        <a href={`https://t.me/${telegram.replace(/^@/, "")}`} target="_blank" rel="noopener noreferrer" className="inline-flex items-center gap-1 text-blue-400 hover:text-blue-300 text-xs">
          <Send size={10} />{telegram}
        </a>
      )}
    </>
  );
}

export function FilterTabs({ filter, counts, total, onFilter }: {
  filter: BookingFilter;
  counts: Record<string, number>;
  total: number;
  onFilter: (f: BookingFilter) => void;
}) {
  return (
    <div className="flex items-center gap-2 flex-wrap">
      <button
        onClick={() => onFilter("all")}
        className={`rounded-full px-3 py-1.5 text-xs font-medium transition-all ${
          filter === "all" ? "bg-gold/20 text-gold border border-gold/40" : "bg-neutral-800 text-neutral-400 border border-white/10 hover:text-white"
        }`}
      >
        Все <span className="text-neutral-500 ml-1">{total}</span>
      </button>
      {BOOKING_STATUSES.map((s) => (
        <button
          key={s.key}
          onClick={() => onFilter(s.key)}
          className={`rounded-full px-3 py-1.5 text-xs font-medium transition-all ${
            filter === s.key ? `${s.bg} ${s.color} border ${s.border}` : "bg-neutral-800 text-neutral-400 border border-white/10 hover:text-white"
          }`}
        >
          {s.label}
          {counts[s.key] > 0 && <span className="ml-1.5">{counts[s.key]}</span>}
        </button>
      ))}
    </div>
  );
}

export function StatusBadge({ status }: { status: BookingStatus }) {
  const conf = BOOKING_STATUSES.find((s) => s.key === status) || BOOKING_STATUSES[0];
  return (
    <span className={`text-[10px] font-medium ${conf.bg} ${conf.color} border ${conf.border} rounded-full px-2.5 py-0.5`}>
      {conf.label}
    </span>
  );
}

export function StatusActions({ status, onStatus }: { status: BookingStatus; onStatus: (s: BookingStatus) => void }) {
  const actionBtn = (label: string, onClick: () => void, cls: string) => (
    <button onClick={onClick} className={`inline-flex items-center gap-1 rounded-full px-2.5 py-1 text-[10px] font-medium transition-all ${cls}`}>
      {label}
    </button>
  );
  return (
    <div className="flex gap-1 ml-auto">
      {status === "new" && actionBtn("Связались →", () => onStatus("contacted"), "bg-blue-500/10 text-blue-400 border border-blue-500/30 hover:bg-blue-500/20")}
      {status === "contacted" && (
        <>
          {actionBtn("Подтвердить", () => onStatus("confirmed"), "bg-emerald-500/10 text-emerald-400 border border-emerald-500/30 hover:bg-emerald-500/20")}
          {actionBtn("Отказ", () => onStatus("declined"), "bg-red-500/10 text-red-400 border border-red-500/30 hover:bg-red-500/20")}
        </>
      )}
      {(status === "confirmed" || status === "declined") && actionBtn("Вернуть", () => onStatus("contacted"), "bg-neutral-800/50 text-neutral-500 border border-transparent hover:border-white/10 hover:text-neutral-300")}
    </div>
  );
}

export function BookingCard({ status, children }: { status: BookingStatus; children: React.ReactNode }) {
  return (
    <div
      className={`rounded-lg border p-3 transition-colors ${
        status === "declined" ? "border-red-500/15 bg-red-500/[0.02] opacity-50"
        : status === "confirmed" ? "border-emerald-500/15 bg-emerald-500/[0.02]"
        : status === "new" ? "border-gold/20 bg-gold/[0.03]"
        : "border-white/10 bg-neutral-800/30"
      }`}
    >
      {children}
    </div>
  );
}