import { useState } from 'react';
import { AtSign, Plus, X, Loader2, BadgeCheck, AlertTriangle } from 'lucide-react';

import { Button } from '@/components/ui/button';
import { Input } from '@/components/ui/input';
import { useCrewNip05 } from '@/hooks/useCrewNip05';
import { useTranslation } from '@/contexts/language';
import { cn } from '@/lib/utils';
import { MAX_PROFILE_HANDLES, normalizeHandle } from '@/lib/profileHandles';

/**
 * Editable list of NIP-05 handles (add / remove / live-verify) for a profile,
 * crew or shop. Each handle is verified against the owner `pubkey`.
 */
export function Nip05HandlesEditor({
  handles,
  onChange,
  pubkey,
  inputId,
  accent = 'teal',
  className,
}: {
  handles: string[];
  onChange: (next: string[]) => void;
  pubkey?: string;
  inputId?: string;
  accent?: 'teal' | 'lime';
  className?: string;
}) {
  const { t } = useTranslation();
  const [input, setInput] = useState('');
  const [error, setError] = useState<string | null>(null);

  const accentText = accent === 'lime' ? 'text-[#ccff00]' : 'text-teal-400';
  const addBtn = accent === 'lime' ? 'bg-[#ccff00] text-black hover:bg-[#ccff00]/90' : 'bg-teal-500 text-white hover:bg-teal-600';

  const add = () => {
    const value = normalizeHandle(input);
    setInput('');
    if (!value) return setError(t('socialUi.form.nip05Invalid'));
    if (handles.includes(value)) return setError(null);
    if (handles.length >= MAX_PROFILE_HANDLES) {
      return setError(t('socialUi.form.nip05TooMany', { count: MAX_PROFILE_HANDLES }));
    }
    setError(null);
    onChange([...handles, value]);
  };

  const remove = (handle: string) => onChange(handles.filter((h) => h !== handle));

  return (
    <div className={cn('space-y-2', className)}>
      <div className="flex gap-2">
        <Input
          id={inputId}
          placeholder={t('socialUi.form.nip05Placeholder')}
          value={input}
          onChange={(e) => { setInput(e.target.value); if (error) setError(null); }}
          onKeyDown={(e) => { if (e.key === 'Enter') { e.preventDefault(); add(); } }}
          spellCheck={false}
          autoCapitalize="none"
          className="bg-gray-800 border-gray-700 font-mono text-sm"
        />
        <Button
          type="button"
          onClick={add}
          className={cn('shrink-0 gap-1', addBtn)}
          disabled={handles.length >= MAX_PROFILE_HANDLES}
        >
          <Plus className="h-4 w-4" /> {t('socialUi.form.nip05Add')}
        </Button>
      </div>
      {error && <p className="text-[11px] text-amber-400">{error}</p>}
      {handles.length > 0 && (
        <div className="space-y-1.5 pt-1">
          {handles.map((handle) => (
            <HandleRow key={handle} handle={handle} pubkey={pubkey} onRemove={() => remove(handle)} accentText={accentText} />
          ))}
        </div>
      )}
    </div>
  );
}

function HandleRow({
  handle,
  pubkey,
  onRemove,
  accentText,
}: {
  handle: string;
  pubkey?: string;
  onRemove: () => void;
  accentText: string;
}) {
  const { t } = useTranslation();
  const { data, isLoading } = useCrewNip05(handle, pubkey);
  const status = data?.status ?? (isLoading ? 'loading' : 'unreachable');

  const icon =
    status === 'verified' ? (
      <BadgeCheck className="h-3.5 w-3.5 text-teal-300" />
    ) : status === 'mismatch' ? (
      <AlertTriangle className="h-3.5 w-3.5 text-red-400" />
    ) : status === 'loading' ? (
      <Loader2 className="h-3.5 w-3.5 animate-spin text-gray-400" />
    ) : (
      <AtSign className="h-3.5 w-3.5 text-gray-500" />
    );
  const label =
    status === 'verified'
      ? t('socialUi.nip05.verified')
      : status === 'mismatch'
        ? t('socialUi.nip05.mismatch')
        : t('socialUi.form.nip05Unverified');

  return (
    <div className="flex items-center gap-2 rounded-lg border border-gray-700 bg-gray-800/60 p-2">
      {icon}
      <span className="min-w-0 flex-1 truncate font-mono text-xs text-gray-200">{handle}</span>
      <span
        className={cn(
          'text-[10px] uppercase tracking-wide',
          status === 'verified' ? accentText : status === 'mismatch' ? 'text-red-400' : 'text-gray-500',
        )}
      >
        {label}
      </span>
      <button
        type="button"
        onClick={onRemove}
        aria-label={t('socialUi.form.nip05Remove', { handle })}
        className="rounded p-1 text-gray-500 transition-colors hover:bg-white/5 hover:text-red-400"
      >
        <X className="h-3.5 w-3.5" />
      </button>
    </div>
  );
}