import React, { useEffect, useState } from "react";

import { Icon } from "../../ui/Icon";
import { highlightCode, loadLanguage } from "../../../utils/language";

interface SyntaxHighlighterProps {
  code: string;
  language: string;
  showLineNumbers?: boolean;
}

export const SyntaxHighlighter: React.FC<SyntaxHighlighterProps> = ({
  code,
  language,
  showLineNumbers = true,
}) => {
  const [highlighted, setHighlighted] = useState(">");
  const [copied, setCopied] = useState(false);

  useEffect(() => {
    const highlight = async () => {
      await loadLanguage(language);
      setHighlighted(highlightCode(code, language));
    };
    void highlight();
  }, [code, language]);

  const handleCopy = async () => {
    await navigator.clipboard.writeText(code);
    setCopied(true);
    setTimeout(() => setCopied(false), 2000);
  };

  const lines = code.split("\n");

  return (
    <div className="syntax-highlighter">
      <div className="highlighter-toolbar">
        <span className="language-badge">{language}</span>
        <button
          className="copy-button"
          onClick={handleCopy}
          type="button"
        >
          {copied ? (
            <>
              <Icon name="success" size="sm" />
              Copied!
            </>
          ) : (
            <>
              <Icon name="copy" size="sm" />
              Copy
            </>
          )}
        </button>
      </div>
      <div className="code-container">
        {showLineNumbers && (
          <div className="line-numbers">
            {lines.map((_, i) => (
              <div key={i} className="line-number">
                {i + 1}
              </div>
            ))}
          </div>
        )}
        <pre className="code-block">
          <code
            className={`language-${language}`}
            dangerouslySetInnerHTML={{ __html: highlighted }}
          />
        </pre>
      </div>
    </div>
  );
};