---
import { GITHUB_URL } from '../data/site';

interface Props {
  targetId: string;
  label?: string;
  variant?: 'icon' | 'text';
  class?: string;
  withAttribution?: boolean;
  nudge?: boolean;
  copyData?: Record<string, unknown> | null;
}

const { targetId, label = 'Copy', variant = 'icon', class: extraClass = '', withAttribution = false, nudge = false, copyData = null } = Astro.props;
const btnId = `copy-btn-${targetId}`;
const nudgeId = `star-nudge-${btnId}`;
---

{variant === 'icon' ? (
  <span class={`inline-flex items-center gap-1 ${extraClass}`}>
    <button
      id={btnId}
      data-copy-target={targetId}
      aria-label="Copy to clipboard"
      class="copy-btn inline-flex items-center gap-1.5 px-2 py-1 text-xs rounded text-slate-400 dark:text-slate-500 hover:text-slate-700 dark:hover:text-slate-300 hover:bg-slate-100 dark:hover:bg-slate-700 transition-colors"
    >
      <svg class="copy-icon w-3.5 h-3.5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z" />
      </svg>
      <svg class="check-icon w-3.5 h-3.5 hidden text-green-500" fill="none" viewBox="0 0 24 24" stroke="currentColor">
        <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7" />
      </svg>
      <span class="copy-label sr-only">Copy</span>
      <span class="copied-label hidden text-green-500 not-sr-only text-xs">Copied!</span>
    </button>
    {nudge && (
      <a
        id={nudgeId}
        href={GITHUB_URL}
        target="_blank"
        rel="noopener noreferrer"
        class="hidden items-center gap-0.5 text-xs text-yellow-500 hover:text-yellow-600 dark:text-yellow-400 dark:hover:text-yellow-300 transition-colors whitespace-nowrap"
        aria-label="Star on GitHub"
      >
        <svg class="w-3 h-3" fill="currentColor" viewBox="0 0 24 24" aria-hidden="true">
          <path d="M12 2l3.09 6.26L22 9.27l-5 4.87 1.18 6.88L12 17.77l-6.18 3.25L7 14.14 2 9.27l6.91-1.01L12 2z"/>
        </svg>
        Star
      </a>
    )}
  </span>
) : (
  <button
    id={btnId}
    data-copy-target={targetId}
    class={`copy-btn inline-flex items-center gap-1.5 px-3 py-1.5 text-xs font-medium rounded-md border border-slate-200 dark:border-slate-700 bg-white dark:bg-slate-800 text-slate-600 dark:text-slate-300 hover:border-brand dark:hover:border-brand-dark hover:text-brand dark:hover:text-brand-dark transition-colors ${extraClass}`}
  >
    <svg class="copy-icon w-3.5 h-3.5" fill="none" viewBox="0 0 24 24" stroke="currentColor">
      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M8 16H6a2 2 0 01-2-2V6a2 2 0 012-2h8a2 2 0 012 2v2m-6 12h8a2 2 0 002-2v-8a2 2 0 00-2-2h-8a2 2 0 00-2 2v8a2 2 0 002 2z" />
    </svg>
    <svg class="check-icon w-3.5 h-3.5 hidden text-green-500" fill="none" viewBox="0 0 24 24" stroke="currentColor">
      <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M5 13l4 4L19 7" />
    </svg>
    <span class="copy-label">{label}</span>
    <span class="copied-label hidden text-green-600 dark:text-green-400">Copied!</span>
  </button>
)}

<script define:vars={{ btnId, nudgeId, withAttribution, nudge, GITHUB_URL, copyData }}>
  const btn = document.getElementById(btnId);
  if (!(btn instanceof HTMLButtonElement)) return;
  if (btn.dataset.copyBound === 'true') return;

  btn.dataset.copyBound = 'true';
  btn.addEventListener('click', async () => {
    const targetId = btn.dataset.copyTarget;
    if (!targetId) return;
    const target = document.getElementById(targetId);
    if (!target) return;

    let text = target.textContent ?? '';
    text = withAttribution
      ? `# Source: ${GITHUB_URL}\n${text.trim()}`
      : text.trim();

    try {
      await navigator.clipboard.writeText(text);
    } catch {
      // Fallback for older browsers
      const ta = document.createElement('textarea');
      ta.value = text;
      ta.style.cssText = 'position:fixed;top:0;left:0;opacity:0;';
      document.body.appendChild(ta);
      ta.select();
      document.execCommand('copy');
      document.body.removeChild(ta);
    }

    // Visual feedback
    const copyIcon = btn.querySelector('.copy-icon');
    const checkIcon = btn.querySelector('.check-icon');
    const copyLabel = btn.querySelector('.copy-label');
    const copiedLabel = btn.querySelector('.copied-label');

    copyIcon?.classList.add('hidden');
    checkIcon?.classList.remove('hidden');
    copyLabel?.classList.add('hidden');
    copiedLabel?.classList.remove('hidden');

    setTimeout(() => {
      copyIcon?.classList.remove('hidden');
      checkIcon?.classList.add('hidden');
      copyLabel?.classList.remove('hidden');
      copiedLabel?.classList.add('hidden');
    }, 2000);

    // Inline star nudge
    if (nudge) {
      const nudgeEl = document.getElementById(nudgeId);
      if (nudgeEl) {
        nudgeEl.classList.remove('hidden');
        nudgeEl.classList.add('inline-flex');
        setTimeout(() => {
          nudgeEl.classList.add('hidden');
          nudgeEl.classList.remove('inline-flex');
        }, 3000);
      }
    }

    if (copyData) {
      window.dispatchEvent(new CustomEvent('apa-copy', { detail: copyData }));
    }
    window.dispatchEvent(new CustomEvent('copy-success'));
  });
</script>