'use client';

import * as React from 'react';
import { useState, useRef } from 'react';

interface SearchBarProps {
  value?: string;
  onChange?: (value: string) => void;
  size?: 'small' | 'large';
}

export const SearchBar: React.FC<SearchBarProps> = ({ value: propValue, onChange, size = 'small' }) => {
  const [internalValue, setInternalValue] = useState('');
  const inputRef = useRef<HTMLInputElement>(null);
  const [isFocused, setIsFocused] = useState(false);

  const value = propValue !== undefined ? propValue : internalValue;

  const handleInput = (e: React.ChangeEvent<HTMLInputElement>) => {
    const newValue = e.target.value;
    if (onChange) {
      onChange(newValue);
    } else {
      setInternalValue(newValue);
    }
  };

  const clearSearch = () => {
    if (onChange) {
      onChange('');
    } else {
      setInternalValue('');
    }
    if (inputRef.current) {
      inputRef.current.focus();
    }
  };

  const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
    if (e.key === 'Escape') {
      clearSearch();
    }
  };

  return (
    <div className="relative w-full">
      <div className="relative flex items-center">
        <input
          ref={inputRef}
          type="text"
          placeholder="Suchen..."
          value={value}
          className={`w-full px-8 py-4 font-bold text-slate-900 bg-white rounded-2xl border transition-all focus:outline-none placeholder:text-slate-300 ${
            size === 'large' ? 'text-2xl md:text-4xl py-6 rounded-3xl' : 'text-lg'
          } ${
            isFocused ? 'border-slate-400' : 'border-slate-200'
          }`}
          onChange={handleInput}
          onKeyDown={handleKeyDown}
          onFocus={() => setIsFocused(true)}
          onBlur={() => setIsFocused(false)}
          aria-label="Search blog posts"
        />

        {value && (
          <button
            onClick={clearSearch}
            className="absolute right-4 top-1/2 -translate-y-1/2 px-3 py-1 border border-slate-200 rounded-full text-[10px] font-bold uppercase tracking-widest text-slate-400 hover:text-slate-900 hover:border-slate-400 hover:bg-slate-50 transition-all duration-500 ease-[cubic-bezier(0.23,1,0.32,1)] hover:-translate-y-[calc(50%+2px)] hover:shadow-lg hover:shadow-slate-100"
            aria-label="Clear search"
            type="button"
          >
            Löschen
          </button>
        )}
      </div>
    </div>
  );
};